public void initialize( AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException { if (!(params instanceof DHParameterSpec)) { throw new InvalidAlgorithmParameterException("parameter object not a DHParameterSpec"); } DHParameterSpec dhParams = (DHParameterSpec)params; param = new DHKeyGenerationParameters(random, new DHParameters(dhParams.getP(), dhParams.getG(), null, dhParams.getL())); engine.init(param); initialised = true; }
private void testBounds() { BigInteger p1 = new BigInteger("00C8028E9151C6B51BCDB35C1F6B2527986A72D8546AE7A4BF41DC4289FF9837EE01592D36C324A0F066149B8B940C86C87D194206A39038AE3396F8E12435BB74449B70222D117B8A2BB77CB0D67A5D664DDE7B75E0FEC13CE0CAF258DAF3ADA0773F6FF0F2051D1859929AAA53B07809E496B582A89C3D7DA8B6E38305626621", 16); BigInteger g1 = new BigInteger("1F869713181464577FE4026B47102FA0D7675503A4FCDA810881FAEC3524E6DBAEA9B96561EF7F8BEA76466DF11C2F3EB1A90CC5851735BF860606481257EECE6418C0204E61004E85D7131CE54BCBC7AD67E53C79DCB715E7C8D083DCD85D728283EC8F96839B4C9FA7C0727C472BEB94E4613CAFA8D580119C0AF4BF8AF252", 16); int l1 = 1023; BigInteger p2 = new BigInteger("00B333C98720220CC3946F494E25231B3E19F9AD5F6B19F4E7ABF80D8826C491C3224D4F7415A14A7C11D1BE584405FED12C3554F103E56A72D986CA5E325BB9DE07AC37D1EAE5E5AC724D32EF638F0E4462D4C1FC7A45B9FD3A5DF5EC36A1FA4DAA3FBB66AA42B1B71DF416AB547E987513426C7BB8634F5F4D37705514FDC1E1", 16); BigInteger g2 = new BigInteger("2592F5A99FE46313650CCE66C94C15DBED9F4A45BD05C329986CF5D3E12139F0405A47C6385FEA27BFFEDC4CBABC5BB151F3BEE7CC3D51567F1E2B12A975AA9F48A70BDAAE7F5B87E70ADCF902490A3CBEFEDA41EBA8E12E02B56120B5FDEFBED07F5EAD3AE020DF3C8233216F8F0D35E13A7AE4DA5CBCC0D91EADBF20C281C6", 16); int l2 = 1024; DHKeyGenerationParameters params1 = new DHKeyGenerationParameters(new SecureRandom(), new DHParameters(p1, g1, null, l1)); DHKeyGenerationParameters params2 = new DHKeyGenerationParameters(new SecureRandom(), new DHParameters(p2, g2, null, l2)); DHBasicKeyPairGenerator kpGen = new DHBasicKeyPairGenerator(); kpGen.init(params1); kpGen.init(params2); }
public byte[] generateClientKeyExchange() throws IOException { // TODO RFC 2246 7.4.72 /* * If the client certificate already contains a suitable Diffie-Hellman key, then * Yc is implicit and does not need to be sent again. In this case, the Client Key * Exchange message will be sent, but will be empty. */ // return new byte[0]; /* * Generate a keypair (using parameters from server key) and send the public value * to the server. */ DHBasicKeyPairGenerator dhGen = new DHBasicKeyPairGenerator(); dhGen.init(new DHKeyGenerationParameters(handler.getRandom(), dhAgreeServerPublicKey.getParameters())); this.dhAgreeClientKeyPair = dhGen.generateKeyPair(); BigInteger Yc = ((DHPublicKeyParameters)dhAgreeClientKeyPair.getPublic()).getY(); return BigIntegers.asUnsignedByteArray(Yc); }
public byte[] generateServerKeyExchange() throws IOException { if (this.dhParameters == null) { throw new TlsFatalAlert(AlertDescription.internal_error); } ByteArrayOutputStream buf = new ByteArrayOutputStream(); DHKeyPairGenerator kpg = new DHKeyPairGenerator(); kpg.init(new DHKeyGenerationParameters(context.getSecureRandom(), this.dhParameters)); AsymmetricCipherKeyPair kp = kpg.generateKeyPair(); BigInteger Ys = ((DHPublicKeyParameters)kp.getPublic()).getY(); TlsDHUtils.writeDHParameter(dhParameters.getP(), buf); TlsDHUtils.writeDHParameter(dhParameters.getG(), buf); TlsDHUtils.writeDHParameter(Ys, buf); byte[] digestInput = buf.toByteArray(); Digest d = new CombinedHash(); SecurityParameters securityParameters = context.getSecurityParameters(); d.update(securityParameters.clientRandom, 0, securityParameters.clientRandom.length); d.update(securityParameters.serverRandom, 0, securityParameters.serverRandom.length); d.update(digestInput, 0, digestInput.length); byte[] hash = new byte[d.getDigestSize()]; d.doFinal(hash, 0); byte[] sigBytes = serverCredentials.generateCertificateSignature(hash); /* * TODO RFC 5246 4.7. digitally-signed element needs SignatureAndHashAlgorithm prepended from TLS 1.2 */ TlsUtils.writeOpaque16(sigBytes, buf); return buf.toByteArray(); }
public static AsymmetricCipherKeyPair generateDHKeyPair(SecureRandom random, DHParameters dhParams) { DHBasicKeyPairGenerator dhGen = new DHBasicKeyPairGenerator(); dhGen.init(new DHKeyGenerationParameters(random, dhParams)); return dhGen.generateKeyPair(); }
/** * calculate our initial message. */ public BigInteger calculateMessage() { DHKeyPairGenerator dhGen = new DHKeyPairGenerator(); dhGen.init(new DHKeyGenerationParameters(random, dhParams)); AsymmetricCipherKeyPair dhPair = dhGen.generateKeyPair(); this.privateValue = ((DHPrivateKeyParameters)dhPair.getPrivate()).getX(); return ((DHPublicKeyParameters)dhPair.getPublic()).getY(); }
private DHBasicKeyPairGenerator getDHBasicKeyPairGenerator( BigInteger g, BigInteger p, int privateValueSize) { DHParameters dhParams = new DHParameters(p, g, null, privateValueSize); DHKeyGenerationParameters params = new DHKeyGenerationParameters(new SecureRandom(), dhParams); DHBasicKeyPairGenerator kpGen = new DHBasicKeyPairGenerator(); kpGen.init(params); return kpGen; }
private DHKeyPairGenerator getDHKeyPairGenerator( BigInteger g, BigInteger p) { DHParameters dhParams = new DHParameters(p, g); DHKeyGenerationParameters params = new DHKeyGenerationParameters(new SecureRandom(), dhParams); DHKeyPairGenerator kpGen = new DHKeyPairGenerator(); kpGen.init(params); return kpGen; }
public void init( KeyGenerationParameters param) { this.param = (DHKeyGenerationParameters)param; }
