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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) { public static BigInteger getBestPrime(int keySize) {
String primeString; String primeString;
if (keySize >= 8192) { if (keySize >= (8192 + 6144) / 2) {
primeString = P8192; primeString = P8192;
} else if (keySize >= 6144) { } else if (keySize >= (6144 + 4096) / 2) {
primeString = P6144; primeString = P6144;
} else if (keySize >= 4096) { } else if (keySize >= (4096 + 3072) / 2) {
primeString = P4096; primeString = P4096;
} else if (keySize >= 3072) { } else if (keySize >= (3072 + 2048) / 2) {
primeString = P3072; primeString = P3072;
} else if (keySize >= 2048) { } else if (keySize >= (2048 + 1536) / 2) {
primeString = P2048; primeString = P2048;
} else { } else {
primeString = P1536; primeString = P1536;

5
src/org/thialfihar/android/apg/ui/widget/SectionView.java
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@ -181,8 +181,9 @@ public class SectionView extends LinearLayout implements OnClickListener, Editor
View view = mInflater.inflate(R.layout.create_key, null); View view = mInflater.inflate(R.layout.create_key, null);
dialog.setView(view); dialog.setView(view);
dialog.setTitle("Create Key"); dialog.setTitle("Create Key");
dialog.setMessage("Note: only subkeys support ElGamal, and for ElGamal will use " + dialog.setMessage("Note: only subkeys support ElGamal, and for ElGamal " +
"the next smallest keysize of 1536, 2048, 3072, 4096, or 8192."); "the nearest keysize of 1536, 2048, 3072, 4096, or 8192 " +
"will be used");
boolean wouldBeMasterKey = (mEditors.getChildCount() == 0); boolean wouldBeMasterKey = (mEditors.getChildCount() == 0);