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choose the NEAREST prime for ElGamal, rather than the next lowest

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Thialfihar
2010-04-24 17:52:13 +00:00
parent 81cdd6b943
commit d8e89c8822
2 changed files with 8 additions and 7 deletions
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10
src/org/thialfihar/android/apg/Primes.java
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@@ -166,15 +166,15 @@ public final class Primes {
public static BigInteger getBestPrime(int keySize) {
String primeString;
if (keySize >= 8192) {
if (keySize >= (8192 + 6144) / 2) {
primeString = P8192;
} else if (keySize >= 6144) {
} else if (keySize >= (6144 + 4096) / 2) {
primeString = P6144;
} else if (keySize >= 4096) {
} else if (keySize >= (4096 + 3072) / 2) {
primeString = P4096;
} else if (keySize >= 3072) {
} else if (keySize >= (3072 + 2048) / 2) {
primeString = P3072;
} else if (keySize >= 2048) {
} else if (keySize >= (2048 + 1536) / 2) {
primeString = P2048;
} else {
primeString = P1536;