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Support numeric9x4 passphrase-format during decryption

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This commit is contained in:
Vincent Breitmoser
2018-04-13 19:07:59 +02:00
parent cb56a44f77
commit ded58588ad
9 changed files with 288 additions and 12 deletions
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38
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java
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@@ -93,6 +93,7 @@ import static java.lang.String.format;
public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInputParcel> {
public static final int PROGRESS_STRIDE_MILLISECONDS = 200;
public static final String PASSPHRASE_FORMAT_NUMERIC9X4 = "numeric9x4";
public PgpDecryptVerifyOperation(Context context, KeyRepository keyRepository, Progressable progressable) {
super(context, keyRepository, progressable);
@@ -230,6 +231,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
private static class ArmorHeaders {
String charset = null;
Integer backupVersion = null;
String passphraseFormat;
String passphraseBegin;
}
private ArmorHeaders parseArmorHeaders(InputStream in, OperationLog log, int indent) {
@@ -261,6 +264,14 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
}
break;
}
case "passphrase-format": {
armorHeaders.passphraseFormat = pieces[1].trim();
break;
}
case "passphrase-begin": {
armorHeaders.passphraseBegin = pieces[1].trim();
break;
}
default: {
// continue;
}
@@ -272,6 +283,12 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
if (armorHeaders.backupVersion != null) {
log.add(LogType.MSG_DC_BACKUP_VERSION, indent, Integer.toString(armorHeaders.backupVersion));
}
if (armorHeaders.passphraseFormat != null) {
log.add(LogType.MSG_DC_PASSPHRASE_FORMAT, indent, armorHeaders.passphraseFormat);
}
if (armorHeaders.passphraseBegin != null) {
log.add(LogType.MSG_DC_PASSPHRASE_BEGIN, indent, armorHeaders.passphraseBegin);
}
}
}
@@ -294,9 +311,11 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
// parse ASCII Armor headers
ArmorHeaders armorHeaders = parseArmorHeaders(in, log, indent);
String charset = armorHeaders.charset;
boolean useBackupCode = false;
RequiredInputParcel customRequiredInputParcel = null;
if (armorHeaders.backupVersion != null && armorHeaders.backupVersion == 2) {
useBackupCode = true;
customRequiredInputParcel = RequiredInputParcel.createRequiredBackupCode();
} else if (PASSPHRASE_FORMAT_NUMERIC9X4.equalsIgnoreCase(armorHeaders.passphraseFormat)) {
customRequiredInputParcel = RequiredInputParcel.createRequiredNumeric9x4(armorHeaders.passphraseBegin);
}
OpenPgpDecryptionResultBuilder decryptionResultBuilder = new OpenPgpDecryptionResultBuilder();
@@ -311,7 +330,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
if (obj instanceof PGPEncryptedDataList) {
esResult = handleEncryptedPacket(
input, cryptoInput, (PGPEncryptedDataList) obj, log, indent, useBackupCode);
input, cryptoInput, (PGPEncryptedDataList) obj, log, indent, customRequiredInputParcel);
// if there is an error, nothing left to do here
if (esResult.errorResult != null) {
@@ -565,7 +584,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
}
private EncryptStreamResult handleEncryptedPacket(PgpDecryptVerifyInputParcel input, CryptoInputParcel cryptoInput,
PGPEncryptedDataList enc, OperationLog log, int indent, boolean useBackupCode) throws PGPException {
PGPEncryptedDataList enc, OperationLog log, int indent, RequiredInputParcel customRequiredInputParcel)
throws PGPException {
EncryptStreamResult result = new EncryptStreamResult();
@@ -723,9 +743,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
if (passphrase == null) {
log.add(LogType.MSG_DC_PENDING_PASSPHRASE, indent + 1);
RequiredInputParcel requiredInputParcel = useBackupCode ?
RequiredInputParcel.createRequiredBackupCode() :
RequiredInputParcel.createRequiredSymmetricPassphrase();
RequiredInputParcel requiredInputParcel = customRequiredInputParcel != null ?
customRequiredInputParcel : RequiredInputParcel.createRequiredSymmetricPassphrase();
return result.with(new DecryptVerifyResult(log,
requiredInputParcel,
cryptoInput));
@@ -771,9 +790,8 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
result.cleartextStream = encryptedDataSymmetric.getDataStream(decryptorFactory);
} catch (PGPDataValidationException e) {
log.add(LogType.MSG_DC_ERROR_SYM_PASSPHRASE, indent + 1);
RequiredInputParcel requiredInputParcel = useBackupCode ?
RequiredInputParcel.createRequiredBackupCode() :
RequiredInputParcel.createRequiredSymmetricPassphrase();
RequiredInputParcel requiredInputParcel = customRequiredInputParcel != null ?
customRequiredInputParcel : RequiredInputParcel.createRequiredSymmetricPassphrase();
return result.with(new DecryptVerifyResult(log, requiredInputParcel, cryptoInput));
}