cthrace/open-keychain
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge pull request #1868 from nmikhailov/nitrokey

Browse Source 
WIP: Security token USB handling improvements
This commit is contained in:
Dominik Schürmann
2016-08-15 07:46:27 +02:00
committed by GitHub
parent 907e8aa6e6 c12d62f309
commit de0c02e044
27 changed files with 2499 additions and 407 deletions
Download Patch File Download Diff File Expand all files Collapse all files

605
OpenKeychain/src/main/java/javax/smartcardio/CommandAPDU.java Normal file
View File

@@ -0,0 +1,605 @@
/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.smartcardio;
import java.util.Arrays;
import java.nio.ByteBuffer;
/**
* A command APDU following the structure defined in ISO/IEC 7816-4.
* It consists of a four byte header and a conditional body of variable length.
* This class does not attempt to verify that the APDU encodes a semantically
* valid command.
*
* <p>Note that when the expected length of the response APDU is specified
* in the {@linkplain #CommandAPDU(int,int,int,int,int) constructors},
* the actual length (Ne) must be specified, not its
* encoded form (Le). Similarly, {@linkplain #getNe} returns the actual
* value Ne. In other words, a value of 0 means "no data in the response APDU"
* rather than "maximum length."
*
* <p>This class supports both the short and extended forms of length
* encoding for Ne and Nc. However, note that not all terminals and Smart Cards
* are capable of accepting APDUs that use the extended form.
*
* <p>For the header bytes CLA, INS, P1, and P2 the Java type <code>int</code>
* is used to represent the 8 bit unsigned values. In the constructors, only
* the 8 lowest bits of the <code>int</code> value specified by the application
* are significant. The accessor methods always return the byte as an unsigned
* value between 0 and 255.
*
* <p>Instances of this class are immutable. Where data is passed in or out
* via byte arrays, defensive cloning is performed.
*
* @see ResponseAPDU
*
* @since 1.6
* @author Andreas Sterbenz
* @author JSR 268 Expert Group
*/
public final class CommandAPDU implements java.io.Serializable {
private static final long serialVersionUID = 398698301286670877L;
private static final int MAX_APDU_SIZE = 65544;
/** @serial */
private byte[] apdu;
// value of nc
private transient int nc;
// value of ne
private transient int ne;
// index of start of data within the apdu array
private transient int dataOffset;
/**
* Constructs a CommandAPDU from a byte array containing the complete
* APDU contents (header and body).
*
* <p>Note that the apdu bytes are copied to protect against
* subsequent modification.
*
* @param apdu the complete command APDU
*
* @throws NullPointerException if apdu is null
* @throws IllegalArgumentException if apdu does not contain a valid
* command APDU
*/
public CommandAPDU(byte[] apdu) {
this.apdu = apdu.clone();
parse();
}
/**
* Constructs a CommandAPDU from a byte array containing the complete
* APDU contents (header and body). The APDU starts at the index
* <code>apduOffset</code> in the byte array and is <code>apduLength</code>
* bytes long.
*
* <p>Note that the apdu bytes are copied to protect against
* subsequent modification.
*
* @param apdu the complete command APDU
* @param apduOffset the offset in the byte array at which the apdu
* data begins
* @param apduLength the length of the APDU
*
* @throws NullPointerException if apdu is null
* @throws IllegalArgumentException if apduOffset or apduLength are
* negative or if apduOffset + apduLength are greater than apdu.length,
* or if the specified bytes are not a valid APDU
*/
public CommandAPDU(byte[] apdu, int apduOffset, int apduLength) {
checkArrayBounds(apdu, apduOffset, apduLength);
this.apdu = new byte[apduLength];
System.arraycopy(apdu, apduOffset, this.apdu, 0, apduLength);
parse();
}
private void checkArrayBounds(byte[] b, int ofs, int len) {
if ((ofs < 0) || (len < 0)) {
throw new IllegalArgumentException
("Offset and length must not be negative");
}
if (b == null) {
if ((ofs != 0) && (len != 0)) {
throw new IllegalArgumentException
("offset and length must be 0 if array is null");
}
} else {
if (ofs > b.length - len) {
throw new IllegalArgumentException
("Offset plus length exceed array size");
}
}
}
/**
* Creates a CommandAPDU from the ByteBuffer containing the complete APDU
* contents (header and body).
* The buffer's <code>position</code> must be set to the start of the APDU,
* its <code>limit</code> to the end of the APDU. Upon return, the buffer's
* <code>position</code> is equal to its limit; its limit remains unchanged.
*
* <p>Note that the data in the ByteBuffer is copied to protect against
* subsequent modification.
*
* @param apdu the ByteBuffer containing the complete APDU
*
* @throws NullPointerException if apdu is null
* @throws IllegalArgumentException if apdu does not contain a valid
* command APDU
*/
public CommandAPDU(ByteBuffer apdu) {
this.apdu = new byte[apdu.remaining()];
apdu.get(this.apdu);
parse();
}
/**
* Constructs a CommandAPDU from the four header bytes. This is case 1
* in ISO 7816, no command body.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
*/
public CommandAPDU(int cla, int ins, int p1, int p2) {
this(cla, ins, p1, p2, null, 0, 0, 0);
}
/**
* Constructs a CommandAPDU from the four header bytes and the expected
* response data length. This is case 2 in ISO 7816, empty command data
* field with Ne specified. If Ne is 0, the APDU is encoded as ISO 7816
* case 1.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
* @param ne the maximum number of expected data bytes in a response APDU
*
* @throws IllegalArgumentException if ne is negative or greater than
* 65536
*/
public CommandAPDU(int cla, int ins, int p1, int p2, int ne) {
this(cla, ins, p1, p2, null, 0, 0, ne);
}
/**
* Constructs a CommandAPDU from the four header bytes and command data.
* This is case 3 in ISO 7816, command data present and Ne absent. The
* value Nc is taken as data.length. If <code>data</code> is null or
* its length is 0, the APDU is encoded as ISO 7816 case 1.
*
* <p>Note that the data bytes are copied to protect against
* subsequent modification.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
* @param data the byte array containing the data bytes of the command body
*
* @throws IllegalArgumentException if data.length is greater than 65535
*/
public CommandAPDU(int cla, int ins, int p1, int p2, byte[] data) {
this(cla, ins, p1, p2, data, 0, arrayLength(data), 0);
}
/**
* Constructs a CommandAPDU from the four header bytes and command data.
* This is case 3 in ISO 7816, command data present and Ne absent. The
* value Nc is taken as dataLength. If <code>dataLength</code>
* is 0, the APDU is encoded as ISO 7816 case 1.
*
* <p>Note that the data bytes are copied to protect against
* subsequent modification.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
* @param data the byte array containing the data bytes of the command body
* @param dataOffset the offset in the byte array at which the data
* bytes of the command body begin
* @param dataLength the number of the data bytes in the command body
*
* @throws NullPointerException if data is null and dataLength is not 0
* @throws IllegalArgumentException if dataOffset or dataLength are
* negative or if dataOffset + dataLength are greater than data.length
* or if dataLength is greater than 65535
*/
public CommandAPDU(int cla, int ins, int p1, int p2, byte[] data,
int dataOffset, int dataLength) {
this(cla, ins, p1, p2, data, dataOffset, dataLength, 0);
}
/**
* Constructs a CommandAPDU from the four header bytes, command data,
* and expected response data length. This is case 4 in ISO 7816,
* command data and Ne present. The value Nc is taken as data.length
* if <code>data</code> is non-null and as 0 otherwise. If Ne or Nc
* are zero, the APDU is encoded as case 1, 2, or 3 per ISO 7816.
*
* <p>Note that the data bytes are copied to protect against
* subsequent modification.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
* @param data the byte array containing the data bytes of the command body
* @param ne the maximum number of expected data bytes in a response APDU
*
* @throws IllegalArgumentException if data.length is greater than 65535
* or if ne is negative or greater than 65536
*/
public CommandAPDU(int cla, int ins, int p1, int p2, byte[] data, int ne) {
this(cla, ins, p1, p2, data, 0, arrayLength(data), ne);
}
private static int arrayLength(byte[] b) {
return (b != null) ? b.length : 0;
}
/**
* Command APDU encoding options:
*
* case 1: |CLA|INS|P1 |P2 | len = 4
* case 2s: |CLA|INS|P1 |P2 |LE | len = 5
* case 3s: |CLA|INS|P1 |P2 |LC |...BODY...| len = 6..260
* case 4s: |CLA|INS|P1 |P2 |LC |...BODY...|LE | len = 7..261
* case 2e: |CLA|INS|P1 |P2 |00 |LE1|LE2| len = 7
* case 3e: |CLA|INS|P1 |P2 |00 |LC1|LC2|...BODY...| len = 8..65542
* case 4e: |CLA|INS|P1 |P2 |00 |LC1|LC2|...BODY...|LE1|LE2| len =10..65544
*
* LE, LE1, LE2 may be 0x00.
* LC must not be 0x00 and LC1|LC2 must not be 0x00|0x00
*/
private void parse() {
if (apdu.length < 4) {
throw new IllegalArgumentException("apdu must be at least 4 bytes long");
}
if (apdu.length == 4) {
// case 1
return;
}
int l1 = apdu[4] & 0xff;
if (apdu.length == 5) {
// case 2s
this.ne = (l1 == 0) ? 256 : l1;
return;
}
if (l1 != 0) {
if (apdu.length == 4 + 1 + l1) {
// case 3s
this.nc = l1;
this.dataOffset = 5;
return;
} else if (apdu.length == 4 + 2 + l1) {
// case 4s
this.nc = l1;
this.dataOffset = 5;
int l2 = apdu[apdu.length - 1] & 0xff;
this.ne = (l2 == 0) ? 256 : l2;
return;
} else {
throw new IllegalArgumentException
("Invalid APDU: length=" + apdu.length + ", b1=" + l1);
}
}
if (apdu.length < 7) {
throw new IllegalArgumentException
("Invalid APDU: length=" + apdu.length + ", b1=" + l1);
}
int l2 = ((apdu[5] & 0xff) << 8) | (apdu[6] & 0xff);
if (apdu.length == 7) {
// case 2e
this.ne = (l2 == 0) ? 65536 : l2;
return;
}
if (l2 == 0) {
throw new IllegalArgumentException("Invalid APDU: length="
+ apdu.length + ", b1=" + l1 + ", b2||b3=" + l2);
}
if (apdu.length == 4 + 3 + l2) {
// case 3e
this.nc = l2;
this.dataOffset = 7;
return;
} else if (apdu.length == 4 + 5 + l2) {
// case 4e
this.nc = l2;
this.dataOffset = 7;
int leOfs = apdu.length - 2;
int l3 = ((apdu[leOfs] & 0xff) << 8) | (apdu[leOfs + 1] & 0xff);
this.ne = (l3 == 0) ? 65536 : l3;
} else {
throw new IllegalArgumentException("Invalid APDU: length="
+ apdu.length + ", b1=" + l1 + ", b2||b3=" + l2);
}
}
/**
* Constructs a CommandAPDU from the four header bytes, command data,
* and expected response data length. This is case 4 in ISO 7816,
* command data and Le present. The value Nc is taken as
* <code>dataLength</code>.
* If Ne or Nc
* are zero, the APDU is encoded as case 1, 2, or 3 per ISO 7816.
*
* <p>Note that the data bytes are copied to protect against
* subsequent modification.
*
* @param cla the class byte CLA
* @param ins the instruction byte INS
* @param p1 the parameter byte P1
* @param p2 the parameter byte P2
* @param data the byte array containing the data bytes of the command body
* @param dataOffset the offset in the byte array at which the data
* bytes of the command body begin
* @param dataLength the number of the data bytes in the command body
* @param ne the maximum number of expected data bytes in a response APDU
*
* @throws NullPointerException if data is null and dataLength is not 0
* @throws IllegalArgumentException if dataOffset or dataLength are
* negative or if dataOffset + dataLength are greater than data.length,
* or if ne is negative or greater than 65536,
* or if dataLength is greater than 65535
*/
public CommandAPDU(int cla, int ins, int p1, int p2, byte[] data,
int dataOffset, int dataLength, int ne) {
checkArrayBounds(data, dataOffset, dataLength);
if (dataLength > 65535) {
throw new IllegalArgumentException("dataLength is too large");
}
if (ne < 0) {
throw new IllegalArgumentException("ne must not be negative");
}
if (ne > 65536) {
throw new IllegalArgumentException("ne is too large");
}
this.ne = ne;
this.nc = dataLength;
if (dataLength == 0) {
if (ne == 0) {
// case 1
this.apdu = new byte[4];
setHeader(cla, ins, p1, p2);
} else {
// case 2s or 2e
if (ne <= 256) {
// case 2s
// 256 is encoded as 0x00
byte len = (ne != 256) ? (byte)ne : 0;
this.apdu = new byte[5];
setHeader(cla, ins, p1, p2);
this.apdu[4] = len;
} else {
// case 2e
byte l1, l2;
// 65536 is encoded as 0x00 0x00
if (ne == 65536) {
l1 = 0;
l2 = 0;
} else {
l1 = (byte)(ne >> 8);
l2 = (byte)ne;
}
this.apdu = new byte[7];
setHeader(cla, ins, p1, p2);
this.apdu[5] = l1;
this.apdu[6] = l2;
}
}
} else {
if (ne == 0) {
// case 3s or 3e
if (dataLength <= 255) {
// case 3s
apdu = new byte[4 + 1 + dataLength];
setHeader(cla, ins, p1, p2);
apdu[4] = (byte)dataLength;
this.dataOffset = 5;
System.arraycopy(data, dataOffset, apdu, 5, dataLength);
} else {
// case 3e
apdu = new byte[4 + 3 + dataLength];
setHeader(cla, ins, p1, p2);
apdu[4] = 0;
apdu[5] = (byte)(dataLength >> 8);
apdu[6] = (byte)dataLength;
this.dataOffset = 7;
System.arraycopy(data, dataOffset, apdu, 7, dataLength);
}
} else {
// case 4s or 4e
if ((dataLength <= 255) && (ne <= 256)) {
// case 4s
apdu = new byte[4 + 2 + dataLength];
setHeader(cla, ins, p1, p2);
apdu[4] = (byte)dataLength;
this.dataOffset = 5;
System.arraycopy(data, dataOffset, apdu, 5, dataLength);
apdu[apdu.length - 1] = (ne != 256) ? (byte)ne : 0;
} else {
// case 4e
apdu = new byte[4 + 5 + dataLength];
setHeader(cla, ins, p1, p2);
apdu[4] = 0;
apdu[5] = (byte)(dataLength >> 8);
apdu[6] = (byte)dataLength;
this.dataOffset = 7;
System.arraycopy(data, dataOffset, apdu, 7, dataLength);
if (ne != 65536) {
int leOfs = apdu.length - 2;
apdu[leOfs] = (byte)(ne >> 8);
apdu[leOfs + 1] = (byte)ne;
} // else le == 65536: no need to fill in, encoded as 0
}
}
}
}
private void setHeader(int cla, int ins, int p1, int p2) {
apdu[0] = (byte)cla;
apdu[1] = (byte)ins;
apdu[2] = (byte)p1;
apdu[3] = (byte)p2;
}
/**
* Returns the value of the class byte CLA.
*
* @return the value of the class byte CLA.
*/
public int getCLA() {
return apdu[0] & 0xff;
}
/**
* Returns the value of the instruction byte INS.
*
* @return the value of the instruction byte INS.
*/
public int getINS() {
return apdu[1] & 0xff;
}
/**
* Returns the value of the parameter byte P1.
*
* @return the value of the parameter byte P1.
*/
public int getP1() {
return apdu[2] & 0xff;
}
/**
* Returns the value of the parameter byte P2.
*
* @return the value of the parameter byte P2.
*/
public int getP2() {
return apdu[3] & 0xff;
}
/**
* Returns the number of data bytes in the command body (Nc) or 0 if this
* APDU has no body. This call is equivalent to
* <code>getData().length</code>.
*
* @return the number of data bytes in the command body or 0 if this APDU
* has no body.
*/
public int getNc() {
return nc;
}
/**
* Returns a copy of the data bytes in the command body. If this APDU as
* no body, this method returns a byte array with length zero.
*
* @return a copy of the data bytes in the command body or the empty
* byte array if this APDU has no body.
*/
public byte[] getData() {
byte[] data = new byte[nc];
System.arraycopy(apdu, dataOffset, data, 0, nc);
return data;
}
/**
* Returns the maximum number of expected data bytes in a response
* APDU (Ne).
*
* @return the maximum number of expected data bytes in a response APDU.
*/
public int getNe() {
return ne;
}
/**
* Returns a copy of the bytes in this APDU.
*
* @return a copy of the bytes in this APDU.
*/
public byte[] getBytes() {
return apdu.clone();
}
/**
* Returns a string representation of this command APDU.
*
* @return a String representation of this command APDU.
*/
public String toString() {
return "CommmandAPDU: " + apdu.length + " bytes, nc=" + nc + ", ne=" + ne;
}
/**
* Compares the specified object with this command APDU for equality.
* Returns true if the given object is also a CommandAPDU and its bytes are
* identical to the bytes in this CommandAPDU.
*
* @param obj the object to be compared for equality with this command APDU
* @return true if the specified object is equal to this command APDU
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof CommandAPDU == false) {
return false;
}
CommandAPDU other = (CommandAPDU)obj;
return Arrays.equals(this.apdu, other.apdu);
}
/**
* Returns the hash code value for this command APDU.
*
* @return the hash code value for this command APDU.
*/
public int hashCode() {
return Arrays.hashCode(apdu);
}
private void readObject(java.io.ObjectInputStream in)
throws java.io.IOException, ClassNotFoundException {
apdu = (byte[])in.readUnshared();
// initialize transient fields
parse();
}
}

2
OpenKeychain/src/main/java/javax/smartcardio/README Normal file
View File

@@ -0,0 +1,2 @@
Copied 'as is' from OpenJDK:
http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/file/f51368baecd9/src/share/classes/javax/smartcardio

184
OpenKeychain/src/main/java/javax/smartcardio/ResponseAPDU.java Normal file
View File

@@ -0,0 +1,184 @@
/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.smartcardio;
import java.util.Arrays;
/**
* A response APDU as defined in ISO/IEC 7816-4. It consists of a conditional
* body and a two byte trailer.
* This class does not attempt to verify that the APDU encodes a semantically
* valid response.
*
* <p>Instances of this class are immutable. Where data is passed in or out
* via byte arrays, defensive cloning is performed.
*
* @see CommandAPDU
*
* @since 1.6
* @author Andreas Sterbenz
* @author JSR 268 Expert Group
*/
public final class ResponseAPDU implements java.io.Serializable {
private static final long serialVersionUID = 6962744978375594225L;
/** @serial */
private byte[] apdu;
/**
* Constructs a ResponseAPDU from a byte array containing the complete
* APDU contents (conditional body and trailed).
*
* <p>Note that the byte array is cloned to protect against subsequent
* modification.
*
* @param apdu the complete response APDU
*
* @throws NullPointerException if apdu is null
* @throws IllegalArgumentException if apdu.length is less than 2
*/
public ResponseAPDU(byte[] apdu) {
apdu = apdu.clone();
check(apdu);
this.apdu = apdu;
}
private static void check(byte[] apdu) {
if (apdu.length < 2) {
throw new IllegalArgumentException("apdu must be at least 2 bytes long");
}
}
/**
* Returns the number of data bytes in the response body (Nr) or 0 if this
* APDU has no body. This call is equivalent to
* <code>getData().length</code>.
*
* @return the number of data bytes in the response body or 0 if this APDU
* has no body.
*/
public int getNr() {
return apdu.length - 2;
}
/**
* Returns a copy of the data bytes in the response body. If this APDU as
* no body, this method returns a byte array with a length of zero.
*
* @return a copy of the data bytes in the response body or the empty
* byte array if this APDU has no body.
*/
public byte[] getData() {
byte[] data = new byte[apdu.length - 2];
System.arraycopy(apdu, 0, data, 0, data.length);
return data;
}
/**
* Returns the value of the status byte SW1 as a value between 0 and 255.
*
* @return the value of the status byte SW1 as a value between 0 and 255.
*/
public int getSW1() {
return apdu[apdu.length - 2] & 0xff;
}
/**
* Returns the value of the status byte SW2 as a value between 0 and 255.
*
* @return the value of the status byte SW2 as a value between 0 and 255.
*/
public int getSW2() {
return apdu[apdu.length - 1] & 0xff;
}
/**
* Returns the value of the status bytes SW1 and SW2 as a single
* status word SW.
* It is defined as
* <code>(getSW1() << 8) | getSW2()</code>.
*
* @return the value of the status word SW.
*/
public int getSW() {
return (getSW1() << 8) | getSW2();
}
/**
* Returns a copy of the bytes in this APDU.
*
* @return a copy of the bytes in this APDU.
*/
public byte[] getBytes() {
return apdu.clone();
}
/**
* Returns a string representation of this response APDU.
*
* @return a String representation of this response APDU.
*/
public String toString() {
return "ResponseAPDU: " + apdu.length + " bytes, SW="
+ Integer.toHexString(getSW());
}
/**
* Compares the specified object with this response APDU for equality.
* Returns true if the given object is also a ResponseAPDU and its bytes are
* identical to the bytes in this ResponseAPDU.
*
* @param obj the object to be compared for equality with this response APDU
* @return true if the specified object is equal to this response APDU
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof ResponseAPDU == false) {
return false;
}
ResponseAPDU other = (ResponseAPDU)obj;
return Arrays.equals(this.apdu, other.apdu);
}
/**
* Returns the hash code value for this response APDU.
*
* @return the hash code value for this response APDU.
*/
public int hashCode() {
return Arrays.hashCode(apdu);
}
private void readObject(java.io.ObjectInputStream in)
throws java.io.IOException, ClassNotFoundException {
apdu = (byte[])in.readUnshared();
check(apdu);
}
}

65
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/CardCapabilities.java Normal file
View File

@@ -0,0 +1,65 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
import java.nio.ByteBuffer;
public class CardCapabilities {
private static final int MASK_CHAINING = 1 << 7;
private static final int MASK_EXTENDED = 1 << 6;
private byte[] mCapabilityBytes;
public CardCapabilities(byte[] historicalBytes) throws UsbTransportException {
if (historicalBytes[0] != 0x00) {
throw new UsbTransportException("Invalid historical bytes category indicator byte");
}
mCapabilityBytes = getCapabilitiesBytes(historicalBytes);
}
public CardCapabilities() {
mCapabilityBytes = null;
}
private static byte[] getCapabilitiesBytes(byte[] historicalBytes) {
// Compact TLV
ByteBuffer byteBuffer = ByteBuffer.wrap(historicalBytes, 1, historicalBytes.length - 2);
while (byteBuffer.hasRemaining()) {
byte tl = byteBuffer.get();
if (tl == 0x73) { // Capabilities TL
byte[] val = new byte[3];
byteBuffer.get(val);
return val;
}
byteBuffer.position(byteBuffer.position() + (tl & 0xF));
}
return null;
}
public boolean hasChaining() {
return mCapabilityBytes != null && (mCapabilityBytes[2] & MASK_CHAINING) != 0;
}
public boolean hasExtended() {
return mCapabilityBytes != null && (mCapabilityBytes[2] & MASK_EXTENDED) != 0;
}
}

9
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/CardException.java
View File

@@ -27,6 +27,15 @@ public class CardException extends IOException {
mResponseCode = responseCode;
}
public CardException(String detailMessage, int responseCode) {
super(detailMessage);
mResponseCode = (short) responseCode;
}
public CardException(String s) {
this(s, -1);
}
public short getResponseCode() {
return mResponseCode;
}

87
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/KeyFormat.java Normal file
View File

@@ -0,0 +1,87 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
// 4.3.3.6 Algorithm Attributes
public class KeyFormat {
private int mAlgorithmId;
private int mModulusLength;
private int mExponentLength;
private AlgorithmFormat mAlgorithmFormat;
public KeyFormat(byte[] bytes) {
mAlgorithmId = bytes[0];
mModulusLength = bytes[1] << 8 | bytes[2];
mExponentLength = bytes[3] << 8 | bytes[4];
mAlgorithmFormat = AlgorithmFormat.from(bytes[5]);
if (mAlgorithmId != 1) { // RSA
throw new IllegalArgumentException("Unsupported Algorithm id " + mAlgorithmId);
}
}
public int getAlgorithmId() {
return mAlgorithmId;
}
public int getModulusLength() {
return mModulusLength;
}
public int getExponentLength() {
return mExponentLength;
}
public AlgorithmFormat getAlgorithmFormat() {
return mAlgorithmFormat;
}
public enum AlgorithmFormat {
STANDARD(0, false, false),
STANDARD_WITH_MODULUS(1, false, true),
CRT(2, true, false),
CRT_WITH_MODULUS(3, true, true);
private int mValue;
private boolean mIncludeModulus;
private boolean mIncludeCrt;
AlgorithmFormat(int value, boolean includeCrt, boolean includeModulus) {
mValue = value;
mIncludeModulus = includeModulus;
mIncludeCrt = includeCrt;
}
public static AlgorithmFormat from(byte b) {
for (AlgorithmFormat format : values()) {
if (format.mValue == b) {
return format;
}
}
return null;
}
public boolean isIncludeModulus() {
return mIncludeModulus;
}
public boolean isIncludeCrt() {
return mIncludeCrt;
}
}
}

4
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/KeyType.java
View File

@@ -51,7 +51,7 @@ public enum KeyType {
return mIdx;
}
public int getmSlot() {
public int getSlot() {
return mSlot;
}
@@ -59,7 +59,7 @@ public enum KeyType {
return mTimestampObjectId;
}
public int getmFingerprintObjectId() {
public int getFingerprintObjectId() {
return mFingerprintObjectId;
}
}

6
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/NfcTransport.java
View File

@@ -19,6 +19,8 @@ package org.sufficientlysecure.keychain.securitytoken;
import android.nfc.Tag;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;
import org.sufficientlysecure.keychain.ui.base.BaseSecurityTokenActivity;
import java.io.IOException;
@@ -43,8 +45,8 @@ public class NfcTransport implements Transport {
* @throws IOException
*/
@Override
public byte[] transceive(final byte[] data) throws IOException {
return mIsoCard.transceive(data);
public ResponseAPDU transceive(final CommandAPDU data) throws IOException {
return new ResponseAPDU(mIsoCard.transceive(data.getBytes()));
}
/**

154
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/OpenPgpCapabilities.java Normal file
View File

@@ -0,0 +1,154 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
import org.sufficientlysecure.keychain.util.Iso7816TLV;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class OpenPgpCapabilities {
private final static int MASK_SM = 1 << 7;
private final static int MASK_KEY_IMPORT = 1 << 5;
private final static int MASK_ATTRIBUTES_CHANGABLE = 1 << 2;
private boolean mPw1ValidForMultipleSignatures;
private byte[] mAid;
private byte[] mHistoricalBytes;
private boolean mHasSM;
private boolean mAttriburesChangable;
private boolean mHasKeyImport;
private byte mSMAlgo;
private int mMaxCmdLen;
private int mMaxRspLen;
private Map<KeyType, KeyFormat> mKeyFormats;
public OpenPgpCapabilities(byte[] data) throws IOException {
Iso7816TLV[] tlvs = Iso7816TLV.readList(data, true);
mKeyFormats = new HashMap<>();
if (tlvs.length == 1 && tlvs[0].mT == 0x6E) {
tlvs = ((Iso7816TLV.Iso7816CompositeTLV) tlvs[0]).mSubs;
}
for (Iso7816TLV tlv : tlvs) {
switch (tlv.mT) {
case 0x4F:
mAid = tlv.mV;
break;
case 0x5F52:
mHistoricalBytes = tlv.mV;
break;
case 0x73:
parseDdo((Iso7816TLV.Iso7816CompositeTLV) tlv);
break;
case 0xC0:
parseExtendedCaps(tlv.mV);
break;
case 0xC1:
mKeyFormats.put(KeyType.SIGN, new KeyFormat(tlv.mV));
break;
case 0xC2:
mKeyFormats.put(KeyType.ENCRYPT, new KeyFormat(tlv.mV));
break;
case 0xC3:
mKeyFormats.put(KeyType.AUTH, new KeyFormat(tlv.mV));
break;
case 0xC4:
mPw1ValidForMultipleSignatures = tlv.mV[0] == 1;
break;
}
}
}
private void parseDdo(Iso7816TLV.Iso7816CompositeTLV tlvs) {
for (Iso7816TLV tlv : tlvs.mSubs) {
switch (tlv.mT) {
case 0xC0:
parseExtendedCaps(tlv.mV);
break;
case 0xC1:
mKeyFormats.put(KeyType.SIGN, new KeyFormat(tlv.mV));
break;
case 0xC2:
mKeyFormats.put(KeyType.ENCRYPT, new KeyFormat(tlv.mV));
break;
case 0xC3:
mKeyFormats.put(KeyType.AUTH, new KeyFormat(tlv.mV));
break;
case 0xC4:
mPw1ValidForMultipleSignatures = tlv.mV[0] == 1;
break;
}
}
}
private void parseExtendedCaps(byte[] v) {
mHasSM = (v[0] & MASK_SM) != 0;
mHasKeyImport = (v[0] & MASK_KEY_IMPORT) != 0;
mAttriburesChangable =(v[0] & MASK_ATTRIBUTES_CHANGABLE) != 0;
mSMAlgo = v[1];
mMaxCmdLen = (v[6] << 8) + v[7];
mMaxRspLen = (v[8] << 8) + v[9];
}
public boolean isPw1ValidForMultipleSignatures() {
return mPw1ValidForMultipleSignatures;
}
public byte[] getAid() {
return mAid;
}
public byte[] getHistoricalBytes() {
return mHistoricalBytes;
}
public boolean isHasSM() {
return mHasSM;
}
public boolean isAttriburesChangable() {
return mAttriburesChangable;
}
public boolean isHasKeyImport() {
return mHasKeyImport;
}
public byte getSMAlgo() {
return mSMAlgo;
}
public int getMaxCmdLen() {
return mMaxCmdLen;
}
public int getMaxRspLen() {
return mMaxRspLen;
}
public KeyFormat getFormatForKeyType(KeyType keyType) {
return mKeyFormats.get(keyType);
}
}

472
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/SecurityTokenHelper.java
View File

@@ -19,7 +19,6 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
import android.support.annotation.NonNull;
@@ -30,33 +29,47 @@ import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
import org.sufficientlysecure.keychain.util.Iso7816TLV;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import org.sufficientlysecure.keychain.util.SecurityTokenUtils;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.security.interfaces.RSAPrivateCrtKey;
import nordpol.Apdu;
/**
* This class provides a communication interface to OpenPGP applications on ISO SmartCard compliant
* devices.
* For the full specs, see http://g10code.com/docs/openpgp-card-2.0.pdf
*/
public class SecurityTokenHelper {
private static final int MAX_APDU_DATAFIELD_SIZE = 254;
private static final int MAX_APDU_NC = 255;
private static final int MAX_APDU_NC_EXT = 65535;
private static final int MAX_APDU_NE = 256;
private static final int MAX_APDU_NE_EXT = 65536;
private static final int APDU_SW_SUCCESS = 0x9000;
private static final int APDU_SW1_RESPONSE_AVAILABLE = 0x61;
private static final int MASK_CLA_CHAINING = 1 << 4;
// Fidesmo constants
private static final String FIDESMO_APPS_AID_PREFIX = "A000000617";
private static final byte[] BLANK_FINGERPRINT = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
private Transport mTransport;
private CardCapabilities mCardCapabilities;
private OpenPgpCapabilities mOpenPgpCapabilities;
private Passphrase mPin;
private Passphrase mAdminPin;
private boolean mPw1ValidForMultipleSignatures;
private boolean mPw1ValidatedForSignature;
private boolean mPw1ValidatedForDecrypt; // Mode 82 does other things; consider renaming?
private boolean mPw3Validated;
@@ -68,20 +81,9 @@ public class SecurityTokenHelper {
return LazyHolder.SECURITY_TOKEN_HELPER;
}
private static String getHex(byte[] raw) {
return new String(Hex.encode(raw));
}
private String getHolderName(String name) {
private String getHolderName(byte[] name) {
try {
String slength;
int ilength;
name = name.substring(6);
slength = name.substring(0, 2);
ilength = Integer.parseInt(slength, 16) * 2;
name = name.substring(2, ilength + 2);
name = (new String(Hex.decode(name))).replace('<', ' ');
return name;
return (new String(name, 4, name[3])).replace('<', ' ');
} catch (IndexOutOfBoundsException e) {
// try-catch for https://github.com/FluffyKaon/OpenPGP-Card
// Note: This should not happen, but happens with
@@ -126,8 +128,8 @@ public class SecurityTokenHelper {
keyType.toString()));
}
putKey(keyType.getmSlot(), secretKey, passphrase);
putData(keyType.getmFingerprintObjectId(), secretKey.getFingerprint());
putKey(keyType, secretKey, passphrase);
putData(keyType.getFingerprintObjectId(), secretKey.getFingerprint());
putData(keyType.getTimestampObjectId(), timestampBytes);
}
@@ -150,53 +152,27 @@ public class SecurityTokenHelper {
*/
public void connectToDevice() throws IOException {
// Connect on transport layer
mCardCapabilities = new CardCapabilities();
mTransport.connect();
// Connect on smartcard layer
// SW1/2 0x9000 is the generic "ok" response, which we expect most of the time.
// See specification, page 51
String accepted = "9000";
// Command APDU (page 51) for SELECT FILE command (page 29)
String opening =
"00" // CLA
+ "A4" // INS
+ "04" // P1
+ "00" // P2
+ "06" // Lc (number of bytes)
+ "D27600012401" // Data (6 bytes)
+ "00"; // Le
String response = communicate(opening); // activate connection
if (!response.endsWith(accepted)) {
throw new CardException("Initialization failed!", parseCardStatus(response));
CommandAPDU select = new CommandAPDU(0x00, 0xA4, 0x04, 0x00, Hex.decode("D27600012401"));
ResponseAPDU response = communicate(select); // activate connection
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Initialization failed!", response.getSW());
}
byte[] pwStatusBytes = getPwStatusBytes();
mPw1ValidForMultipleSignatures = (pwStatusBytes[0] == 1);
mOpenPgpCapabilities = new OpenPgpCapabilities(getData(0x00, 0x6E));
mCardCapabilities = new CardCapabilities(mOpenPgpCapabilities.getHistoricalBytes());
mPw1ValidatedForSignature = false;
mPw1ValidatedForDecrypt = false;
mPw3Validated = false;
}
/**
* Parses out the status word from a JavaCard response string.
*
* @param response A hex string with the response from the card
* @return A short indicating the SW1/SW2, or 0 if a status could not be determined.
*/
private short parseCardStatus(String response) {
if (response.length() < 4) {
return 0; // invalid input
}
try {
return Short.parseShort(response.substring(response.length() - 4), 16);
} catch (NumberFormatException e) {
return 0;
}
}
/**
* Modifies the user's PW1 or PW3. Before sending, the new PIN will be validated for
* conformance to the token's requirements for key length.
@@ -230,16 +206,11 @@ public class SecurityTokenHelper {
}
// Command APDU for CHANGE REFERENCE DATA command (page 32)
String changeReferenceDataApdu = "00" // CLA
+ "24" // INS
+ "00" // P1
+ String.format("%02x", pw) // P2
+ String.format("%02x", pin.length + newPin.length) // Lc
+ getHex(pin)
+ getHex(newPin);
String response = communicate(changeReferenceDataApdu); // change PIN
if (!response.equals("9000")) {
throw new CardException("Failed to change PIN", parseCardStatus(response));
CommandAPDU changePin = new CommandAPDU(0x00, 0x24, 0x00, pw, Arrays.concatenate(pin, newPin));
ResponseAPDU response = communicate(changePin);
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Failed to change PIN", response.getSW());
}
}
@@ -254,38 +225,20 @@ public class SecurityTokenHelper {
verifyPin(0x82); // (Verify PW1 with mode 82 for decryption)
}
int offset = 1; // Skip first byte
String response = "", status = "";
// Transmit
while (offset < encryptedSessionKey.length) {
boolean isLastCommand = offset + MAX_APDU_DATAFIELD_SIZE < encryptedSessionKey.length;
String cla = isLastCommand ? "10" : "00";
int len = Math.min(MAX_APDU_DATAFIELD_SIZE, encryptedSessionKey.length - offset);
response = communicate(cla + "2a8086" + Hex.toHexString(new byte[]{(byte) len})
+ Hex.toHexString(encryptedSessionKey, offset, len));
status = response.substring(response.length() - 4);
if (!isLastCommand && !response.endsWith("9000")) {
throw new CardException("Deciphering with Security token failed on transmit", parseCardStatus(response));
}
offset += MAX_APDU_DATAFIELD_SIZE;
byte[] data = Arrays.copyOfRange(encryptedSessionKey, 2, encryptedSessionKey.length);
if (data[0] != 0) {
data = Arrays.prepend(data, (byte) 0x00);
}
// Receive
String result = getDataField(response);
while (response.endsWith("61")) {
response = communicate("00C00000" + status.substring(2));
status = response.substring(response.length() - 4);
result += getDataField(response);
}
if (!status.equals("9000")) {
throw new CardException("Deciphering with Security token failed on receive", parseCardStatus(response));
CommandAPDU command = new CommandAPDU(0x00, 0x2A, 0x80, 0x86, data, MAX_APDU_NE_EXT);
ResponseAPDU response = communicate(command);
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Deciphering with Security token failed on receive", response.getSW());
}
return Hex.decode(result);
return response.getData();
}
/**
@@ -304,12 +257,9 @@ public class SecurityTokenHelper {
pin = mPin.toStringUnsafe().getBytes();
}
// SW1/2 0x9000 is the generic "ok" response, which we expect most of the time.
// See specification, page 51
String accepted = "9000";
String response = tryPin(mode, pin); // login
if (!response.equals(accepted)) {
throw new CardException("Bad PIN!", parseCardStatus(response));
ResponseAPDU response = tryPin(mode, pin);// login
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Bad PIN!", response.getSW());
}
if (mode == 0x81) {
@@ -342,16 +292,11 @@ public class SecurityTokenHelper {
verifyPin(0x83); // (Verify PW3)
}
String putDataApdu = "00" // CLA
+ "DA" // INS
+ String.format("%02x", (dataObject & 0xFF00) >> 8) // P1
+ String.format("%02x", dataObject & 0xFF) // P2
+ String.format("%02x", data.length) // Lc
+ getHex(data);
CommandAPDU command = new CommandAPDU(0x00, 0xDA, (dataObject & 0xFF00) >> 8, dataObject & 0xFF, data);
ResponseAPDU response = communicate(command); // put data
String response = communicate(putDataApdu); // put data
if (!response.equals("9000")) {
throw new CardException("Failed to put data.", parseCardStatus(response));
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Failed to put data.", response.getSW());
}
}
@@ -363,12 +308,8 @@ public class SecurityTokenHelper {
* 0xB8: Decipherment Key
* 0xA4: Authentication Key
*/
private void putKey(int slot, CanonicalizedSecretKey secretKey, Passphrase passphrase)
private void putKey(KeyType slot, CanonicalizedSecretKey secretKey, Passphrase passphrase)
throws IOException {
if (slot != 0xB6 && slot != 0xB8 && slot != 0xA4) {
throw new IOException("Invalid key slot");
}
RSAPrivateCrtKey crtSecretKey;
try {
secretKey.unlock(passphrase);
@@ -391,80 +332,17 @@ public class SecurityTokenHelper {
verifyPin(0x83); // (Verify PW3 with mode 83)
}
byte[] header = Hex.decode(
"4D82" + "03A2" // Extended header list 4D82, length of 930 bytes. (page 23)
+ String.format("%02x", slot) + "00" // CRT to indicate targeted key, no length
+ "7F48" + "15" // Private key template 0x7F48, length 21 (decimal, 0x15 hex)
+ "9103" // Public modulus, length 3
+ "928180" // Prime P, length 128
+ "938180" // Prime Q, length 128
+ "948180" // Coefficient (1/q mod p), length 128
+ "958180" // Prime exponent P (d mod (p - 1)), length 128
+ "968180" // Prime exponent Q (d mod (1 - 1)), length 128
+ "97820100" // Modulus, length 256, last item in private key template
+ "5F48" + "820383");// DO 5F48; 899 bytes of concatenated key data will follow
byte[] dataToSend = new byte[934];
byte[] currentKeyObject;
int offset = 0;
System.arraycopy(header, 0, dataToSend, offset, header.length);
offset += header.length;
currentKeyObject = crtSecretKey.getPublicExponent().toByteArray();
System.arraycopy(currentKeyObject, 0, dataToSend, offset, 3);
offset += 3;
// NOTE: For a 2048-bit key, these lengths are fixed. However, bigint includes a leading 0
// in the array to represent sign, so we take care to set the offset to 1 if necessary.
currentKeyObject = crtSecretKey.getPrimeP().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte) 0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeQ().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte) 0);
offset += 128;
currentKeyObject = crtSecretKey.getCrtCoefficient().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte) 0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeExponentP().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte) 0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeExponentQ().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte) 0);
offset += 128;
currentKeyObject = crtSecretKey.getModulus().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 256, dataToSend, offset, 256);
String putKeyCommand = "10DB3FFF";
String lastPutKeyCommand = "00DB3FFF";
// Now we're ready to communicate with the token.
offset = 0;
String response;
while (offset < dataToSend.length) {
int dataRemaining = dataToSend.length - offset;
if (dataRemaining > 254) {
response = communicate(
putKeyCommand + "FE" + Hex.toHexString(dataToSend, offset, 254)
);
offset += 254;
} else {
int length = dataToSend.length - offset;
response = communicate(
lastPutKeyCommand + String.format("%02x", length)
+ Hex.toHexString(dataToSend, offset, length));
offset += length;
}
byte[] bytes = SecurityTokenUtils.createPrivKeyTemplate(crtSecretKey, slot,
mOpenPgpCapabilities.getFormatForKeyType(slot));
if (!response.endsWith("9000")) {
throw new CardException("Key export to Security Token failed", parseCardStatus(response));
}
CommandAPDU apdu = new CommandAPDU(0x00, 0xDB, 0x3F, 0xFF, bytes);
ResponseAPDU response = communicate(apdu);
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Key export to Security Token failed", response.getSW());
}
// Clear array with secret data before we return.
Arrays.fill(dataToSend, (byte) 0);
}
/**
@@ -474,17 +352,29 @@ public class SecurityTokenHelper {
* @return The fingerprints of all subkeys in a contiguous byte array.
*/
public byte[] getFingerprints() throws IOException {
String data = "00CA006E00";
byte[] buf = mTransport.transceive(Hex.decode(data));
CommandAPDU apdu = new CommandAPDU(0x00, 0xCA, 0x00, 0x6E, MAX_APDU_NE_EXT);
ResponseAPDU response = communicate(apdu);
Iso7816TLV tlv = Iso7816TLV.readSingle(buf, true);
Log.d(Constants.TAG, "nfcGetFingerprints() Iso7816TLV tlv data:\n" + tlv.prettyPrint());
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Failed to get fingerprints", response.getSW());
}
Iso7816TLV fptlv = Iso7816TLV.findRecursive(tlv, 0xc5);
if (fptlv == null) {
Iso7816TLV[] tlvList = Iso7816TLV.readList(response.getData(), true);
Iso7816TLV fingerPrintTlv = null;
for (Iso7816TLV tlv : tlvList) {
Log.d(Constants.TAG, "nfcGetFingerprints() Iso7816TLV tlv data:\n" + tlv.prettyPrint());
Iso7816TLV matchingTlv = Iso7816TLV.findRecursive(tlv, 0xc5);
if (matchingTlv != null) {
fingerPrintTlv = matchingTlv;
}
}
if (fingerPrintTlv == null) {
return null;
}
return fptlv.mV;
return fingerPrintTlv.mV;
}
/**
@@ -493,18 +383,23 @@ public class SecurityTokenHelper {
* @return Seven bytes in fixed format, plus 0x9000 status word at the end.
*/
private byte[] getPwStatusBytes() throws IOException {
String data = "00CA00C400";
return mTransport.transceive(Hex.decode(data));
return getData(0x00, 0xC4);
}
public byte[] getAid() throws IOException {
String info = "00CA004F00";
return mTransport.transceive(Hex.decode(info));
return getData(0x00, 0x4F);
}
public String getUserId() throws IOException {
String info = "00CA006500";
return getHolderName(communicate(info));
return getHolderName(getData(0x00, 0x65));
}
private byte[] getData(int p1, int p2) throws IOException {
ResponseAPDU response = communicate(new CommandAPDU(0x00, 0xCA, p1, p2, MAX_APDU_NE_EXT));
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Failed to get pw status bytes", response.getSW());
}
return response.getData();
}
/**
@@ -518,8 +413,7 @@ public class SecurityTokenHelper {
verifyPin(0x81); // (Verify PW1 with mode 81 for signing)
}
// dsi, including Lc
String dsi;
byte[] dsi;
Log.i(Constants.TAG, "Hash: " + hashAlgo);
switch (hashAlgo) {
@@ -527,95 +421,127 @@ public class SecurityTokenHelper {
if (hash.length != 20) {
throw new IOException("Bad hash length (" + hash.length + ", expected 10!");
}
dsi = "23" // Lc
+ "3021" // Tag/Length of Sequence, the 0x21 includes all following 33 bytes
dsi = Arrays.concatenate(Hex.decode(
"3021" // Tag/Length of Sequence, the 0x21 includes all following 33 bytes
+ "3009" // Tag/Length of Sequence, the 0x09 are the following header bytes
+ "0605" + "2B0E03021A" // OID of SHA1
+ "0500" // TLV coding of ZERO
+ "0414" + getHex(hash); // 0x14 are 20 hash bytes
+ "0414"), hash); // 0x14 are 20 hash bytes
break;
case HashAlgorithmTags.RIPEMD160:
if (hash.length != 20) {
throw new IOException("Bad hash length (" + hash.length + ", expected 20!");
}
dsi = "233021300906052B2403020105000414" + getHex(hash);
dsi = Arrays.concatenate(Hex.decode("3021300906052B2403020105000414"), hash);
break;
case HashAlgorithmTags.SHA224:
if (hash.length != 28) {
throw new IOException("Bad hash length (" + hash.length + ", expected 28!");
}
dsi = "2F302D300D06096086480165030402040500041C" + getHex(hash);
dsi = Arrays.concatenate(Hex.decode("302D300D06096086480165030402040500041C"), hash);
break;
case HashAlgorithmTags.SHA256:
if (hash.length != 32) {
throw new IOException("Bad hash length (" + hash.length + ", expected 32!");
}
dsi = "333031300D060960864801650304020105000420" + getHex(hash);
dsi = Arrays.concatenate(Hex.decode("3031300D060960864801650304020105000420"), hash);
break;
case HashAlgorithmTags.SHA384:
if (hash.length != 48) {
throw new IOException("Bad hash length (" + hash.length + ", expected 48!");
}
dsi = "433041300D060960864801650304020205000430" + getHex(hash);
dsi = Arrays.concatenate(Hex.decode("3041300D060960864801650304020205000430"), hash);
break;
case HashAlgorithmTags.SHA512:
if (hash.length != 64) {
throw new IOException("Bad hash length (" + hash.length + ", expected 64!");
}
dsi = "533051300D060960864801650304020305000440" + getHex(hash);
dsi = Arrays.concatenate(Hex.decode("3051300D060960864801650304020305000440"), hash);
break;
default:
throw new IOException("Not supported hash algo!");
}
// Command APDU for PERFORM SECURITY OPERATION: COMPUTE DIGITAL SIGNATURE (page 37)
String apdu =
"002A9E9A" // CLA, INS, P1, P2
+ dsi // digital signature input
+ "00"; // Le
CommandAPDU command = new CommandAPDU(0x00, 0x2A, 0x9E, 0x9A, dsi, MAX_APDU_NE_EXT);
ResponseAPDU response = communicate(command);
String response = communicate(apdu);
if (response.length() < 4) {
throw new CardException("Bad response", (short) 0);
}
// split up response into signature and status
String status = response.substring(response.length() - 4);
String signature = response.substring(0, response.length() - 4);
// while we are getting 0x61 status codes, retrieve more data
while (status.substring(0, 2).equals("61")) {
Log.d(Constants.TAG, "requesting more data, status " + status);
// Send GET RESPONSE command
response = communicate("00C00000" + status.substring(2));
status = response.substring(response.length() - 4);
signature += response.substring(0, response.length() - 4);
if (response.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Failed to sign", response.getSW());
}
Log.d(Constants.TAG, "final response:" + status);
if (!mPw1ValidForMultipleSignatures) {
if (!mOpenPgpCapabilities.isPw1ValidForMultipleSignatures()) {
mPw1ValidatedForSignature = false;
}
if (!"9000".equals(status)) {
throw new CardException("Bad NFC response code: " + status, parseCardStatus(response));
}
byte[] signature = response.getData();
// Make sure the signature we received is actually the expected number of bytes long!
if (signature.length() != 256 && signature.length() != 512
&& signature.length() != 768 && signature.length() != 1024) {
throw new IOException("Bad signature length! Expected 128/256/384/512 bytes, got " + signature.length() / 2);
if (signature.length != 128 && signature.length != 256
&& signature.length != 384 && signature.length != 512) {
throw new IOException("Bad signature length! Expected 128/256/384/512 bytes, got " + signature.length);
}
return Hex.decode(signature);
return signature;
}
/**
* Transceive data via NFC encoded as Hex
* Transceives APDU
* Splits extended APDU into short APDUs and chains them if necessary
* Performs GET RESPONSE command(ISO/IEC 7816-4 par.7.6.1) on retrieving if necessary
* @param apdu short or extended APDU to transceive
* @return response from the card
* @throws IOException
*/
private String communicate(String apdu) throws IOException {
return getHex(mTransport.transceive(Hex.decode(apdu)));
private ResponseAPDU communicate(CommandAPDU apdu) throws IOException {
ByteArrayOutputStream result = new ByteArrayOutputStream();
ResponseAPDU lastResponse = null;
// Transmit
if (mCardCapabilities.hasExtended()) {
lastResponse = mTransport.transceive(apdu);
} else if (apdu.getData().length <= MAX_APDU_NC) {
int ne = Math.min(apdu.getNe(), MAX_APDU_NE);
lastResponse = mTransport.transceive(new CommandAPDU(apdu.getCLA(), apdu.getINS(),
apdu.getP1(), apdu.getP2(), apdu.getData(), ne));
} else if (apdu.getData().length > MAX_APDU_NC && mCardCapabilities.hasChaining()) {
int offset = 0;
byte[] data = apdu.getData();
int ne = Math.min(apdu.getNe(), MAX_APDU_NE);
while (offset < data.length) {
int curLen = Math.min(MAX_APDU_NC, data.length - offset);
boolean last = offset + curLen >= data.length;
int cla = apdu.getCLA() + (last ? 0 : MASK_CLA_CHAINING);
lastResponse = mTransport.transceive(new CommandAPDU(cla, apdu.getINS(), apdu.getP1(),
apdu.getP2(), Arrays.copyOfRange(data, offset, offset + curLen), ne));
if (!last && lastResponse.getSW() != APDU_SW_SUCCESS) {
throw new UsbTransportException("Failed to chain apdu");
}
offset += curLen;
}
}
if (lastResponse == null) {
throw new UsbTransportException("Can't transmit command");
}
result.write(lastResponse.getData());
// Receive
while (lastResponse.getSW1() == APDU_SW1_RESPONSE_AVAILABLE) {
// GET RESPONSE ISO/IEC 7816-4 par.7.6.1
CommandAPDU getResponse = new CommandAPDU(0x00, 0xC0, 0x00, 0x00, lastResponse.getSW2());
lastResponse = mTransport.transceive(getResponse);
result.write(lastResponse.getData());
}
result.write(lastResponse.getSW1());
result.write(lastResponse.getSW2());
return new ResponseAPDU(result.toByteArray());
}
public Transport getTransport() {
@@ -631,9 +557,8 @@ public class SecurityTokenHelper {
try {
// By trying to select any apps that have the Fidesmo AID prefix we can
// see if it is a Fidesmo device or not
byte[] mSelectResponse = mTransport.transceive(Apdu.select(FIDESMO_APPS_AID_PREFIX));
// Compare the status returned by our select with the OK status code
return Apdu.hasStatus(mSelectResponse, Apdu.OK_APDU);
CommandAPDU apdu = new CommandAPDU(0x00, 0xA4, 0x04, 0x00, Hex.decode(FIDESMO_APPS_AID_PREFIX));
return communicate(apdu).getSW() == APDU_SW_SUCCESS;
} catch (IOException e) {
Log.e(Constants.TAG, "Card communication failed!", e);
}
@@ -664,38 +589,19 @@ public class SecurityTokenHelper {
verifyPin(0x83); // (Verify PW3 with mode 83)
}
String generateKeyApdu = "0047800002" + String.format("%02x", slot) + "0000";
String getResponseApdu = "00C00000";
CommandAPDU apdu = new CommandAPDU(0x00, 0x47, 0x80, 0x00, new byte[]{(byte) slot, 0x00}, MAX_APDU_NE_EXT);
ResponseAPDU response = communicate(apdu);
String first = communicate(generateKeyApdu);
String second = communicate(getResponseApdu);
if (!second.endsWith("9000")) {
if (response.getSW() != APDU_SW_SUCCESS) {
throw new IOException("On-card key generation failed");
}
String publicKeyData = getDataField(first) + getDataField(second);
Log.d(Constants.TAG, "Public Key Data Objects: " + publicKeyData);
return Hex.decode(publicKeyData);
return response.getData();
}
private String getDataField(String output) {
return output.substring(0, output.length() - 4);
}
private String tryPin(int mode, byte[] pin) throws IOException {
private ResponseAPDU tryPin(int mode, byte[] pin) throws IOException {
// Command APDU for VERIFY command (page 32)
String login =
"00" // CLA
+ "20" // INS
+ "00" // P1
+ String.format("%02x", mode) // P2
+ String.format("%02x", pin.length) // Lc
+ Hex.toHexString(pin);
return communicate(login);
return communicate(new CommandAPDU(0x00, 0x20, 0x00, mode, pin));
}
/**
@@ -704,35 +610,37 @@ public class SecurityTokenHelper {
* Afterwards, the token is reactivated.
*/
public void resetAndWipeToken() throws IOException {
String accepted = "9000";
// try wrong PIN 4 times until counter goes to C0
byte[] pin = "XXXXXX".getBytes();
for (int i = 0; i <= 4; i++) {
String response = tryPin(0x81, pin);
if (response.equals(accepted)) { // Should NOT accept!
throw new CardException("Should never happen, XXXXXX has been accepted!", parseCardStatus(response));
ResponseAPDU response = tryPin(0x81, pin);
if (response.getSW() == APDU_SW_SUCCESS) { // Should NOT accept!
throw new CardException("Should never happen, XXXXXX has been accepted!", response.getSW());
}
}
// try wrong Admin PIN 4 times until counter goes to C0
byte[] adminPin = "XXXXXXXX".getBytes();
for (int i = 0; i <= 4; i++) {
String response = tryPin(0x83, adminPin);
if (response.equals(accepted)) { // Should NOT accept!
throw new CardException("Should never happen, XXXXXXXX has been accepted", parseCardStatus(response));
ResponseAPDU response = tryPin(0x83, adminPin);
if (response.getSW() == APDU_SW_SUCCESS) { // Should NOT accept!
throw new CardException("Should never happen, XXXXXXXX has been accepted", response.getSW());
}
}
// reactivate token!
String reactivate1 = "00" + "e6" + "00" + "00";
String reactivate2 = "00" + "44" + "00" + "00";
String response1 = communicate(reactivate1);
String response2 = communicate(reactivate2);
if (!response1.equals(accepted) || !response2.equals(accepted)) {
throw new CardException("Reactivating failed!", parseCardStatus(response1));
// NOTE: keep the order here! First execute _both_ reactivate commands. Before checking _both_ responses
// If a token is in a bad state and reactivate1 fails, it could still be reactivated with reactivate2
CommandAPDU reactivate1 = new CommandAPDU(0x00, 0xE6, 0x00, 0x00);
CommandAPDU reactivate2 = new CommandAPDU(0x00, 0x44, 0x00, 0x00);
ResponseAPDU response1 = communicate(reactivate1);
ResponseAPDU response2 = communicate(reactivate2);
if (response1.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Reactivating failed!", response1.getSW());
}
if (response2.getSW() != APDU_SW_SUCCESS) {
throw new CardException("Reactivating failed!", response2.getSW());
}
}
/**

5
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/Transport.java
View File

@@ -17,6 +17,9 @@
package org.sufficientlysecure.keychain.securitytoken;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;
import java.io.IOException;
/**
@@ -29,7 +32,7 @@ public interface Transport {
* @return received data
* @throws IOException
*/
byte[] transceive(byte[] data) throws IOException;
ResponseAPDU transceive(CommandAPDU data) throws IOException;
/**
* Disconnect and release connection

169
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/CcidTransceiver.java Normal file
View File

@@ -0,0 +1,169 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbEndpoint;
import android.os.SystemClock;
import android.support.annotation.NonNull;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
public class CcidTransceiver {
private static final int TIMEOUT = 20 * 1000; // 20s
private byte mCounter;
private UsbDeviceConnection mConnection;
private UsbEndpoint mBulkIn;
private UsbEndpoint mBulkOut;
public CcidTransceiver(final UsbDeviceConnection connection, final UsbEndpoint bulkIn,
final UsbEndpoint bulkOut) {
mConnection = connection;
mBulkIn = bulkIn;
mBulkOut = bulkOut;
}
public byte[] receiveRaw() throws UsbTransportException {
byte[] bytes;
do {
bytes = receive();
} while (isDataBlockNotReady(bytes));
checkDataBlockResponse(bytes);
return Arrays.copyOfRange(bytes, 10, bytes.length);
}
/**
* Power of ICC
* Spec: 6.1.1 PC_to_RDR_IccPowerOn
*
* @throws UsbTransportException
*/
@NonNull
public byte[] iccPowerOn() throws UsbTransportException {
final byte[] iccPowerCommand = {
0x62,
0x00, 0x00, 0x00, 0x00,
0x00,
mCounter++,
0x00,
0x00, 0x00
};
sendRaw(iccPowerCommand);
long startTime = System.currentTimeMillis();
byte[] atr = null;
while (true) {
try {
atr = receiveRaw();
break;
} catch (Exception e) {
// Try more startTime
if (System.currentTimeMillis() - startTime > TIMEOUT) {
break;
}
}
SystemClock.sleep(100);
}
if (atr == null) {
throw new UsbTransportException("Couldn't power up Security Token");
}
return atr;
}
/**
* Transmits XfrBlock
* 6.1.4 PC_to_RDR_XfrBlock
* @param payload payload to transmit
* @throws UsbTransportException
*/
public void sendXfrBlock(byte[] payload) throws UsbTransportException {
int l = payload.length;
byte[] data = Arrays.concatenate(new byte[]{
0x6f,
(byte) l, (byte) (l >> 8), (byte) (l >> 16), (byte) (l >> 24),
0x00,
mCounter++,
0x00,
0x00, 0x00},
payload);
int send = 0;
while (send < data.length) {
final int len = Math.min(mBulkIn.getMaxPacketSize(), data.length - send);
sendRaw(Arrays.copyOfRange(data, send, send + len));
send += len;
}
}
public byte[] receive() throws UsbTransportException {
byte[] buffer = new byte[mBulkIn.getMaxPacketSize()];
byte[] result = null;
int readBytes = 0, totalBytes = 0;
do {
int res = mConnection.bulkTransfer(mBulkIn, buffer, buffer.length, TIMEOUT);
if (res < 0) {
throw new UsbTransportException("USB error - failed to receive response " + res);
}
if (result == null) {
if (res < 10) {
throw new UsbTransportException("USB-CCID error - failed to receive CCID header");
}
totalBytes = ByteBuffer.wrap(buffer, 1, 4).order(ByteOrder.LITTLE_ENDIAN).asIntBuffer().get() + 10;
result = new byte[totalBytes];
}
System.arraycopy(buffer, 0, result, readBytes, res);
readBytes += res;
} while (readBytes < totalBytes);
return result;
}
private void sendRaw(final byte[] data) throws UsbTransportException {
final int tr1 = mConnection.bulkTransfer(mBulkOut, data, data.length, TIMEOUT);
if (tr1 != data.length) {
throw new UsbTransportException("USB error - failed to transmit data " + tr1);
}
}
private static byte getStatus(byte[] bytes) {
return (byte) ((bytes[7] >> 6) & 0x03);
}
private void checkDataBlockResponse(byte[] bytes) throws UsbTransportException {
final byte status = getStatus(bytes);
if (status != 0) {
throw new UsbTransportException("USB-CCID error - status " + status + " error code: " + Hex.toHexString(bytes, 8, 1));
}
}
private static boolean isDataBlockNotReady(byte[] bytes) {
return getStatus(bytes) == 2;
}
}

24
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/CcidTransportProtocol.java Normal file
View File

@@ -0,0 +1,24 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb;
import android.support.annotation.NonNull;
public interface CcidTransportProtocol {
byte[] transceive(@NonNull byte[] apdu) throws UsbTransportException;
}

41
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/T1ShortApduProtocol.java Normal file
View File

@@ -0,0 +1,41 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb;
import android.support.annotation.NonNull;
import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.util.Log;
public class T1ShortApduProtocol implements CcidTransportProtocol {
private CcidTransceiver mTransceiver;
public T1ShortApduProtocol(CcidTransceiver transceiver) throws UsbTransportException {
mTransceiver = transceiver;
byte[] atr = mTransceiver.iccPowerOn();
Log.d(Constants.TAG, "Usb transport connected T1/Short APDU, ATR=" + Hex.toHexString(atr));
}
@Override
public byte[] transceive(@NonNull final byte[] apdu) throws UsbTransportException {
mTransceiver.sendXfrBlock(apdu);
return mTransceiver.receiveRaw();
}
}

186
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/UsbTransport.java → OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/UsbTransport.java
View File

@@ -15,7 +15,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
package org.sufficientlysecure.keychain.securitytoken.usb;
import android.hardware.usb.UsbConstants;
import android.hardware.usb.UsbDevice;
@@ -27,9 +27,11 @@ import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.Pair;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.securitytoken.Transport;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;
import org.sufficientlysecure.keychain.securitytoken.usb.tpdu.T1TpduProtocol;
import org.sufficientlysecure.keychain.util.Log;
import java.io.IOException;
@@ -42,8 +44,15 @@ import java.nio.ByteOrder;
* Implements small subset of these features
*/
public class UsbTransport implements Transport {
private static final int USB_CLASS_SMARTCARD = 11;
private static final int TIMEOUT = 20 * 1000; // 20s
private static final int PROTOCOLS_OFFSET = 6;
private static final int FEATURES_OFFSET = 40;
private static final short MASK_T1_PROTO = 2;
// dwFeatures Masks
private static final int MASK_TPDU = 0x10000;
private static final int MASK_SHORT_APDU = 0x20000;
private static final int MASK_EXTENDED_APDU = 0x40000;
private final UsbManager mUsbManager;
private final UsbDevice mUsbDevice;
@@ -51,39 +60,14 @@ public class UsbTransport implements Transport {
private UsbEndpoint mBulkIn;
private UsbEndpoint mBulkOut;
private UsbDeviceConnection mConnection;
private byte mCounter;
private CcidTransceiver mTransceiver;
private CcidTransportProtocol mProtocol;
public UsbTransport(UsbDevice usbDevice, UsbManager usbManager) {
mUsbDevice = usbDevice;
mUsbManager = usbManager;
}
/**
* Manage ICC power, Yubikey requires to power on ICC
* Spec: 6.1.1 PC_to_RDR_IccPowerOn; 6.1.2 PC_to_RDR_IccPowerOff
*
* @param on true to turn ICC on, false to turn it off
* @throws UsbTransportException
*/
private void setIccPower(boolean on) throws UsbTransportException {
final byte[] iccPowerCommand = {
(byte) (on ? 0x62 : 0x63),
0x00, 0x00, 0x00, 0x00,
0x00,
mCounter++,
0x00,
0x00, 0x00
};
sendRaw(iccPowerCommand);
byte[] bytes;
do {
bytes = receive();
} while (isDataBlockNotReady(bytes));
checkDataBlockResponse(bytes);
}
/**
* Get first class 11 (Chip/Smartcard) interface of the device
*
@@ -94,7 +78,7 @@ public class UsbTransport implements Transport {
private static UsbInterface getSmartCardInterface(UsbDevice device) {
for (int i = 0; i < device.getInterfaceCount(); i++) {
UsbInterface anInterface = device.getInterface(i);
if (anInterface.getInterfaceClass() == USB_CLASS_SMARTCARD) {
if (anInterface.getInterfaceClass() == UsbConstants.USB_CLASS_CSCID) {
return anInterface;
}
}
@@ -165,7 +149,6 @@ public class UsbTransport implements Transport {
*/
@Override
public void connect() throws IOException {
mCounter = 0;
mUsbInterface = getSmartCardInterface(mUsbDevice);
if (mUsbInterface == null) {
// Shouldn't happen as we whitelist only class 11 devices
@@ -189,8 +172,56 @@ public class UsbTransport implements Transport {
throw new UsbTransportException("USB error - failed to claim interface");
}
setIccPower(true);
Log.d(Constants.TAG, "Usb transport connected");
mTransceiver = new CcidTransceiver(mConnection, mBulkIn, mBulkOut);
configureProtocol();
}
private void configureProtocol() throws UsbTransportException {
byte[] desc = mConnection.getRawDescriptors();
int dwProtocols = 0, dwFeatures = 0;
boolean hasCcidDescriptor = false;
ByteBuffer byteBuffer = ByteBuffer.wrap(desc).order(ByteOrder.LITTLE_ENDIAN);
while (byteBuffer.hasRemaining()) {
byteBuffer.mark();
byte len = byteBuffer.get(), type = byteBuffer.get();
if (type == 0x21 && len == 0x36) {
byteBuffer.reset();
byteBuffer.position(byteBuffer.position() + PROTOCOLS_OFFSET);
dwProtocols = byteBuffer.getInt();
byteBuffer.reset();
byteBuffer.position(byteBuffer.position() + FEATURES_OFFSET);
dwFeatures = byteBuffer.getInt();
hasCcidDescriptor = true;
break;
} else {
byteBuffer.position(byteBuffer.position() + len - 2);
}
}
if (!hasCcidDescriptor) {
throw new UsbTransportException("CCID descriptor not found");
}
if ((dwProtocols & MASK_T1_PROTO) == 0) {
throw new UsbTransportException("T=0 protocol is not supported");
}
if ((dwFeatures & MASK_TPDU) != 0) {
mProtocol = new T1TpduProtocol(mTransceiver);
} else if (((dwFeatures & MASK_SHORT_APDU) != 0) || ((dwFeatures & MASK_EXTENDED_APDU) != 0)) {
mProtocol = new T1ShortApduProtocol(mTransceiver);
} else {
throw new UsbTransportException("Character level exchange is not supported");
}
}
/**
@@ -200,87 +231,8 @@ public class UsbTransport implements Transport {
* @throws UsbTransportException
*/
@Override
public byte[] transceive(byte[] data) throws UsbTransportException {
sendXfrBlock(data);
byte[] bytes;
do {
bytes = receive();
} while (isDataBlockNotReady(bytes));
checkDataBlockResponse(bytes);
// Discard header
return Arrays.copyOfRange(bytes, 10, bytes.length);
}
/**
* Transmits XfrBlock
* 6.1.4 PC_to_RDR_XfrBlock
* @param payload payload to transmit
* @throws UsbTransportException
*/
private void sendXfrBlock(byte[] payload) throws UsbTransportException {
int l = payload.length;
byte[] data = Arrays.concatenate(new byte[]{
0x6f,
(byte) l, (byte) (l >> 8), (byte) (l >> 16), (byte) (l >> 24),
0x00,
mCounter++,
0x00,
0x00, 0x00},
payload);
int send = 0;
while (send < data.length) {
final int len = Math.min(mBulkIn.getMaxPacketSize(), data.length - send);
sendRaw(Arrays.copyOfRange(data, send, send + len));
send += len;
}
}
private byte[] receive() throws UsbTransportException {
byte[] buffer = new byte[mBulkIn.getMaxPacketSize()];
byte[] result = null;
int readBytes = 0, totalBytes = 0;
do {
int res = mConnection.bulkTransfer(mBulkIn, buffer, buffer.length, TIMEOUT);
if (res < 0) {
throw new UsbTransportException("USB error - failed to receive response " + res);
}
if (result == null) {
if (res < 10) {
throw new UsbTransportException("USB-CCID error - failed to receive CCID header");
}
totalBytes = ByteBuffer.wrap(buffer, 1, 4).order(ByteOrder.LITTLE_ENDIAN).asIntBuffer().get() + 10;
result = new byte[totalBytes];
}
System.arraycopy(buffer, 0, result, readBytes, res);
readBytes += res;
} while (readBytes < totalBytes);
return result;
}
private void sendRaw(final byte[] data) throws UsbTransportException {
final int tr1 = mConnection.bulkTransfer(mBulkOut, data, data.length, TIMEOUT);
if (tr1 != data.length) {
throw new UsbTransportException("USB error - failed to transmit data " + tr1);
}
}
private byte getStatus(byte[] bytes) {
return (byte) ((bytes[7] >> 6) & 0x03);
}
private void checkDataBlockResponse(byte[] bytes) throws UsbTransportException {
final byte status = getStatus(bytes);
if (status != 0) {
throw new UsbTransportException("USB-CCID error - status " + status + " error code: " + Hex.toHexString(bytes, 8, 1));
}
}
private boolean isDataBlockNotReady(byte[] bytes) {
return getStatus(bytes) == 2;
public ResponseAPDU transceive(CommandAPDU data) throws UsbTransportException {
return new ResponseAPDU(mProtocol.transceive(data.getBytes()));
}
@Override

2
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/UsbTransportException.java → OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/UsbTransportException.java
View File

@@ -15,7 +15,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken;
package org.sufficientlysecure.keychain.securitytoken.usb;
import java.io.IOException;

99
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/Block.java Normal file
View File

@@ -0,0 +1,99 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
public class Block {
protected static final int MAX_PAYLOAD_LEN = 254;
protected static final int OFFSET_NAD = 0;
protected static final int OFFSET_PCB = 1;
protected static final int OFFSET_LEN = 2;
protected static final int OFFSET_DATA = 3;
protected byte[] mData;
protected BlockChecksumType mChecksumType;
public Block(BlockChecksumType checksumType, byte[] data) throws UsbTransportException {
this.mChecksumType = checksumType;
this.mData = data;
int checksumOffset = this.mData.length - mChecksumType.getLength();
byte[] checksum = mChecksumType.computeChecksum(data, 0, checksumOffset);
if (!Arrays.areEqual(checksum, getEdc())) {
throw new UsbTransportException("TPDU CRC doesn't match");
}
}
protected Block(BlockChecksumType checksumType, byte nad, byte pcb, byte[] apdu)
throws UsbTransportException {
this.mChecksumType = checksumType;
if (apdu.length > MAX_PAYLOAD_LEN) {
throw new UsbTransportException("APDU is too long; should be split");
}
this.mData = Arrays.concatenate(
new byte[]{nad, pcb, (byte) apdu.length},
apdu,
new byte[mChecksumType.getLength()]);
int checksumOffset = this.mData.length - mChecksumType.getLength();
byte[] checksum = mChecksumType.computeChecksum(this.mData, 0, checksumOffset);
System.arraycopy(checksum, 0, this.mData, checksumOffset, mChecksumType.getLength());
}
protected Block(Block baseBlock) {
this.mChecksumType = baseBlock.getChecksumType();
this.mData = baseBlock.getRawData();
}
public byte getNad() {
return mData[OFFSET_NAD];
}
public byte getPcb() {
return mData[OFFSET_PCB];
}
public byte getLen() {
return mData[OFFSET_LEN];
}
public byte[] getEdc() {
return Arrays.copyOfRange(mData, mData.length - mChecksumType.getLength(), mData.length);
}
public BlockChecksumType getChecksumType() {
return mChecksumType;
}
public byte[] getApdu() {
return Arrays.copyOfRange(mData, OFFSET_DATA, mData.length - mChecksumType.getLength());
}
public byte[] getRawData() {
return mData;
}
@Override
public String toString() {
return Hex.toHexString(mData);
}
}

46
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/BlockChecksumType.java Normal file
View File

@@ -0,0 +1,46 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
public enum BlockChecksumType {
LRC(1), CRC(2);
private int mLength;
BlockChecksumType(int length) {
mLength = length;
}
public byte[] computeChecksum(byte[] data, int offset, int len) throws UsbTransportException {
if (this == LRC) {
byte res = 0;
for (int i = offset; i < len; i++) {
res ^= data[i];
}
return new byte[]{res};
} else {
throw new UsbTransportException("CRC checksum is not implemented");
}
}
public int getLength() {
return mLength;
}
}

56
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/FrameType.java Normal file
View File

@@ -0,0 +1,56 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
public enum FrameType {
I_BLOCK(0b00000000, 0b10000000, 6, true), // Information
R_BLOCK(0b10000000, 0b11000000, 4, false), // Receipt ack
S_BLOCK(0b11000000, 0b11000000, -1, false); // System
private byte mValue;
private byte mMask;
private int mSequenceBit;
private boolean mChainingSupported;
FrameType(int value, int mask, int sequenceBit, boolean chaining) {
// Accept ints just to avoid cast in creation
this.mValue = (byte) value;
this.mMask = (byte) mask;
this.mSequenceBit = sequenceBit;
this.mChainingSupported = chaining;
}
public static FrameType fromPCB(byte pcb) throws UsbTransportException {
for (final FrameType frameType : values()) {
if ((frameType.mMask & pcb) == frameType.mValue) {
return frameType;
}
}
throw new UsbTransportException("Invalid PCB byte");
}
public int getSequenceBit() {
return mSequenceBit;
}
public boolean isChainingSupported() {
return mChainingSupported;
}
}

47
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/IBlock.java Normal file
View File

@@ -0,0 +1,47 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
public class IBlock extends Block {
public static final byte MASK_RBLOCK = (byte) 0b10000000;
public static final byte MASK_VALUE_RBLOCK = (byte) 0b00000000;
private static final byte BIT_SEQUENCE = 6;
private static final byte BIT_CHAINING = 5;
public IBlock(final Block baseBlock) {
super(baseBlock);
}
public IBlock(BlockChecksumType checksumType, byte nad, byte sequence, boolean chaining,
byte[] apdu) throws UsbTransportException {
super(checksumType, nad,
(byte) (((sequence & 1) << BIT_SEQUENCE) | (chaining ? 1 << BIT_CHAINING : 0)),
apdu);
}
public byte getSequence() {
return (byte) ((getPcb() >> BIT_SEQUENCE) & 1);
}
public boolean getChaining() {
return ((getPcb() >> BIT_CHAINING) & 1) != 0;
}
}

65
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/RBlock.java Normal file
View File

@@ -0,0 +1,65 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import android.support.annotation.NonNull;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
public class RBlock extends Block {
public static final byte MASK_RBLOCK = (byte) 0b11000000;
public static final byte MASK_VALUE_RBLOCK = (byte) 0b10000000;
private static final byte BIT_SEQUENCE = 4;
public RBlock(Block baseBlock) throws UsbTransportException {
super(baseBlock);
if (getApdu().length != 0) {
throw new UsbTransportException("Data in R-block");
}
}
public RBlock(BlockChecksumType checksumType, byte nad, byte sequence)
throws UsbTransportException {
super(checksumType, nad, (byte) (MASK_VALUE_RBLOCK | ((sequence & 1) << BIT_SEQUENCE)), new byte[0]);
}
public RError getError() throws UsbTransportException {
return RError.from(getPcb());
}
public enum RError {
NO_ERROR(0), EDC_ERROR(1), OTHER_ERROR(2);
private byte mLowBits;
RError(int lowBits) {
mLowBits = (byte) lowBits;
}
@NonNull
public static RError from(byte i) throws UsbTransportException {
for (final RError error : values()) {
if (error.mLowBits == (i & 0x3)) {
return error;
}
}
throw new UsbTransportException("Invalid R block error bits");
}
}
}

27
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/SBlock.java Normal file
View File

@@ -0,0 +1,27 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
public class SBlock extends Block {
public static final byte MASK_SBLOCK = (byte) 0b11000000;
public static final byte MASK_VALUE_SBLOCK = (byte) 0b11000000;
public SBlock(Block baseBlock) {
super(baseBlock);
}
}

144
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/tpdu/T1TpduProtocol.java Normal file
View File

@@ -0,0 +1,144 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.securitytoken.usb.tpdu;
import android.support.annotation.NonNull;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.securitytoken.usb.CcidTransceiver;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransportException;
import org.sufficientlysecure.keychain.securitytoken.usb.CcidTransportProtocol;
import org.sufficientlysecure.keychain.util.Log;
public class T1TpduProtocol implements CcidTransportProtocol {
private final static int MAX_FRAME_LEN = 254;
private byte mCounter = 0;
private CcidTransceiver mTransceiver;
private BlockChecksumType mChecksumType;
public T1TpduProtocol(final CcidTransceiver transceiver) throws UsbTransportException {
mTransceiver = transceiver;
// Connect
byte[] atr = mTransceiver.iccPowerOn();
Log.d(Constants.TAG, "Usb transport connected T1/TPDU, ATR=" + Hex.toHexString(atr));
// TODO: set checksum from atr
mChecksumType = BlockChecksumType.LRC;
// PPS all auto
pps();
}
protected void pps() throws UsbTransportException {
byte[] pps = new byte[]{(byte) 0xFF, 1, (byte) (0xFF ^ 1)};
mTransceiver.sendXfrBlock(pps);
byte[] ppsResponse = mTransceiver.receiveRaw();
Log.d(Constants.TAG, "PPS response " + Hex.toHexString(ppsResponse));
}
public byte[] transceive(@NonNull byte[] apdu) throws UsbTransportException {
int start = 0;
if (apdu.length == 0) {
throw new UsbTransportException("Cant transcive zero-length apdu(tpdu)");
}
Block responseBlock = null;
while (apdu.length - start > 0) {
boolean hasMore = start + MAX_FRAME_LEN < apdu.length;
int len = Math.min(MAX_FRAME_LEN, apdu.length - start);
// Send next frame
Block block = newIBlock(mCounter++, hasMore, Arrays.copyOfRange(apdu, start, start + len));
mTransceiver.sendXfrBlock(block.getRawData());
// Receive I or R block
responseBlock = getBlockFromResponse(mTransceiver.receiveRaw());
start += len;
if (responseBlock instanceof SBlock) {
Log.d(Constants.TAG, "S-Block received " + responseBlock.toString());
// just ignore
} else if (responseBlock instanceof RBlock) {
Log.d(Constants.TAG, "R-Block received " + responseBlock.toString());
if (((RBlock) responseBlock).getError() != RBlock.RError.NO_ERROR) {
throw new UsbTransportException("R-Block reports error "
+ ((RBlock) responseBlock).getError());
}
} else { // I block
if (start != apdu.length) {
throw new UsbTransportException("T1 frame response underflow");
}
break;
}
}
// Receive
if (responseBlock == null || !(responseBlock instanceof IBlock))
throw new UsbTransportException("Invalid tpdu sequence state");
byte[] responseApdu = responseBlock.getApdu();
while (((IBlock) responseBlock).getChaining()) {
Block ackBlock = newRBlock((byte) (((IBlock) responseBlock).getSequence() + 1));
mTransceiver.sendXfrBlock(ackBlock.getRawData());
responseBlock = getBlockFromResponse(mTransceiver.receiveRaw());
if (responseBlock instanceof IBlock) {
responseApdu = Arrays.concatenate(responseApdu, responseBlock.getApdu());
} else {
Log.d(Constants.TAG, "Response block received " + responseBlock.toString());
throw new UsbTransportException("Response: invalid state - invalid block received");
}
}
return responseApdu;
}
// Factory methods
public Block getBlockFromResponse(byte[] data) throws UsbTransportException {
final Block baseBlock = new Block(mChecksumType, data);
if ((baseBlock.getPcb() & IBlock.MASK_RBLOCK) == IBlock.MASK_VALUE_RBLOCK) {
return new IBlock(baseBlock);
} else if ((baseBlock.getPcb() & SBlock.MASK_SBLOCK) == SBlock.MASK_VALUE_SBLOCK) {
return new SBlock(baseBlock);
} else if ((baseBlock.getPcb() & RBlock.MASK_RBLOCK) == RBlock.MASK_VALUE_RBLOCK) {
return new RBlock(baseBlock);
}
throw new UsbTransportException("TPDU Unknown block type");
}
public IBlock newIBlock(byte sequence, boolean chaining, byte[] apdu) throws UsbTransportException {
return new IBlock(mChecksumType, (byte) 0, sequence, chaining, apdu);
}
public RBlock newRBlock(byte sequence) throws UsbTransportException {
return new RBlock(mChecksumType, (byte) 0, sequence);
}
}

2
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseSecurityTokenActivity.java
View File

@@ -47,7 +47,7 @@ import org.sufficientlysecure.keychain.securitytoken.NfcTransport;
import org.sufficientlysecure.keychain.securitytoken.SecurityTokenHelper;
import org.sufficientlysecure.keychain.securitytoken.Transport;
import org.sufficientlysecure.keychain.util.UsbConnectionDispatcher;
import org.sufficientlysecure.keychain.securitytoken.UsbTransport;
import org.sufficientlysecure.keychain.securitytoken.usb.UsbTransport;
import org.sufficientlysecure.keychain.ui.CreateKeyActivity;
import org.sufficientlysecure.keychain.ui.PassphraseDialogActivity;
import org.sufficientlysecure.keychain.ui.ViewKeyActivity;

154
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/SecurityTokenUtils.java Normal file
View File

@@ -0,0 +1,154 @@
/*
* Copyright (C) 2016 Nikita Mikhailov <nikita.s.mikhailov@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.util;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.securitytoken.KeyFormat;
import org.sufficientlysecure.keychain.securitytoken.KeyType;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.interfaces.RSAPrivateCrtKey;
public class SecurityTokenUtils {
public static byte[] createPrivKeyTemplate(RSAPrivateCrtKey secretKey, KeyType slot,
KeyFormat format) throws IOException {
ByteArrayOutputStream stream = new ByteArrayOutputStream(),
template = new ByteArrayOutputStream(),
data = new ByteArrayOutputStream(),
res = new ByteArrayOutputStream();
int expLengthBytes = (format.getExponentLength() + 7) / 8;
// Public exponent
template.write(new byte[]{(byte) 0x91, (byte) expLengthBytes});
writeBits(data, secretKey.getPublicExponent(), expLengthBytes);
// Prime P, length 128
template.write(Hex.decode("928180"));
writeBits(data, secretKey.getPrimeP(), 128);
// Prime Q, length 128
template.write(Hex.decode("938180"));
writeBits(data, secretKey.getPrimeQ(), 128);
if (format.getAlgorithmFormat().isIncludeCrt()) {
// Coefficient (1/q mod p), length 128
template.write(Hex.decode("948180"));
writeBits(data, secretKey.getCrtCoefficient(), 128);
// Prime exponent P (d mod (p - 1)), length 128
template.write(Hex.decode("958180"));
writeBits(data, secretKey.getPrimeExponentP(), 128);
// Prime exponent Q (d mod (1 - 1)), length 128
template.write(Hex.decode("968180"));
writeBits(data, secretKey.getPrimeExponentQ(), 128);
}
if (format.getAlgorithmFormat().isIncludeModulus()) {
// Modulus, length 256, last item in private key template
template.write(Hex.decode("97820100"));
writeBits(data, secretKey.getModulus(), 256);
}
// Bundle up
// Ext header list data
// Control Reference Template to indicate the private key
stream.write(slot.getSlot());
stream.write(0);
// Cardholder private key template
stream.write(Hex.decode("7F48"));
stream.write(encodeLength(template.size()));
stream.write(template.toByteArray());
// Concatenation of key data as defined in DO 7F48
stream.write(Hex.decode("5F48"));
stream.write(encodeLength(data.size()));
stream.write(data.toByteArray());
// Result tlv
res.write(Hex.decode("4D"));
res.write(encodeLength(stream.size()));
res.write(stream.toByteArray());
return res.toByteArray();
}
public static byte[] encodeLength(int len) {
if (len < 0) {
throw new IllegalArgumentException("length is negative");
} else if (len >= 16777216) {
throw new IllegalArgumentException("length is too big: " + len);
}
byte[] res;
if (len < 128) {
res = new byte[1];
res[0] = (byte) len;
} else if (len < 256) {
res = new byte[2];
res[0] = -127;
res[1] = (byte) len;
} else if (len < 65536) {
res = new byte[3];
res[0] = -126;
res[1] = (byte) (len / 256);
res[2] = (byte) (len % 256);
} else {
res = new byte[4];
res[0] = -125;
res[1] = (byte) (len / 65536);
res[2] = (byte) (len / 256);
res[3] = (byte) (len % 256);
}
return res;
}
public static void writeBits(ByteArrayOutputStream stream, BigInteger value, int width) {
if (value.signum() == -1) {
throw new IllegalArgumentException("value is negative");
} else if (width <= 0) {
throw new IllegalArgumentException("width <= 0");
}
byte[] prime = value.toByteArray();
int stripIdx = 0;
while (prime[stripIdx] == 0 && stripIdx + 1 < prime.length) {
stripIdx++;
}
if (prime.length - stripIdx > width) {
throw new IllegalArgumentException("not enough width to fit value: "
+ prime.length + "/" + width);
}
byte[] res = new byte[width];
int empty = width - (prime.length - stripIdx);
System.arraycopy(prime, stripIdx, res, Math.max(0, empty), Math.min(prime.length, width));
stream.write(res, 0, width);
Arrays.fill(res, (byte) 0);
Arrays.fill(prime, (byte) 0);
}
}

17
OpenKeychain/src/main/res/xml/usb_device_filter.xml
View File

@@ -1,7 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
Based on https://github.com/Yubico/yubikey-personalization/blob/master/ykcore/ykdef.h
Based on
https://github.com/Yubico/yubikey-personalization/blob/master/ykcore/ykdef.h
https://www.nitrokey.com/de/documentation/installation#p:nitrokey-pro&os:linux
Note that values are decimal.
-->
<resources xmlns:android="http://schemas.android.com/apk/res/android">
@@ -24,4 +27,16 @@
<!-- Yubikey 4 OTP + U2F + CCID-->
<usb-device class="11" vendor-id="4176" product-id="1031"/>
<!-- Nitrokey Pro-->
<usb-device class="11" vendor-id="8352" product-id="16648"/>
<!-- Nitrokey Storage-->
<usb-device class="11" vendor-id="8352" product-id="16649"/>
<!--GNUK based device are not supported right now-->
<!-- Nitrokey Start-->
<!--<usb-device class="11" vendor-id="8352" product-id="16913"/>-->
<!-- Default GNUK vid/pid-->
<!--<usb-device class="11" vendor-id="9035" product-id="0"/>-->
</resources>