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Combine the system's PRNG with Fortuna, in case either one is flawed.

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akwizgran
2014-04-11 13:02:03 +01:00
parent bb38911dc8
commit 3dab4543e6
1 changed files with 8 additions and 1 deletions
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9
briar-core/src/org/briarproject/crypto/CryptoComponentImpl.java
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@@ -95,7 +95,14 @@ class CryptoComponentImpl implements CryptoComponent {
@Inject @Inject
CryptoComponentImpl(SeedProvider r) { CryptoComponentImpl(SeedProvider r) {
if(!FortunaSecureRandom.selfTest()) throw new RuntimeException(); if(!FortunaSecureRandom.selfTest()) throw new RuntimeException();
secureRandom = new FortunaSecureRandom(r.getSeed()); SecureRandom secureRandom1 = new SecureRandom();
if(LOG.isLoggable(INFO)) {
String provider = secureRandom1.getProvider().getName();
String algorithm = secureRandom1.getAlgorithm();
LOG.info("Default SecureRandom: " + provider + " " + algorithm);
}
SecureRandom secureRandom2 = new FortunaSecureRandom(r.getSeed());
secureRandom = new CombinedSecureRandom(secureRandom1, secureRandom2);
ECKeyGenerationParameters params = new ECKeyGenerationParameters( ECKeyGenerationParameters params = new ECKeyGenerationParameters(
PARAMETERS, secureRandom); PARAMETERS, secureRandom);
agreementKeyPairGenerator = new ECKeyPairGenerator(); agreementKeyPairGenerator = new ECKeyPairGenerator();