List of usage examples for org.bouncycastle.crypto.params ECKeyGenerationParameters ECKeyGenerationParameters
public ECKeyGenerationParameters(ECDomainParameters domainParams, SecureRandom random)
From source file:ECIESTest.java
public TestResult perform() { SecureRandom random = new SecureRandom(); ECCurve.Fp curve = new ECCurve.Fp( new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b ECDomainParameters params = new ECDomainParameters(curve, curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n ECKeyPairGenerator pGen = new ECKeyPairGenerator(); ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(params, random); pGen.init(genParam);/*from w ww .j ava 2s . c om*/ AsymmetricCipherKeyPair p1 = pGen.generateKeyPair(); AsymmetricCipherKeyPair p2 = pGen.generateKeyPair(); // // stream test // IESEngine i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()), new HMac(new SHA1Digest())); IESEngine i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()), new HMac(new SHA1Digest())); byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }; byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 }; IESParameters p = new IESParameters(d, e, 64); i1.init(true, p1.getPrivate(), p2.getPublic(), p); i2.init(false, p2.getPrivate(), p1.getPublic(), p); byte[] message = Hex.decode("1234567890abcdef"); try { byte[] out1 = i1.processBlock(message, 0, message.length); byte[] out2 = i2.processBlock(out1, 0, out1.length); if (!sameAs(out2, message)) { return new SimpleTestResult(false, this.getName() + ": stream cipher test failed"); } } catch (Exception ex) { return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString()); } // // twofish with IV0 test // BufferedBlockCipher c1 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine())); BufferedBlockCipher c2 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine())); i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()), new HMac(new SHA1Digest()), c1); i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()), new HMac(new SHA1Digest()), c2); d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }; e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 }; p = new IESWithCipherParameters(d, e, 64, 128); i1.init(true, p1.getPrivate(), p2.getPublic(), p); i2.init(false, p2.getPrivate(), p1.getPublic(), p); message = Hex.decode("1234567890abcdef"); try { byte[] out1 = i1.processBlock(message, 0, message.length); byte[] out2 = i2.processBlock(out1, 0, out1.length); if (!sameAs(out2, message)) { return new SimpleTestResult(false, this.getName() + ": twofish cipher test failed"); } } catch (Exception ex) { return new SimpleTestResult(false, this.getName() + ": twofish cipher test exception " + ex.toString()); } return new SimpleTestResult(true, this.getName() + ": Okay"); }
From source file:com.bitsofproof.supernode.api.ECKeyPair.java
License:Apache License
public static ECKeyPair createNew(boolean compressed) { ECKeyPairGenerator generator = new ECKeyPairGenerator(); ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(domain, secureRandom); generator.init(keygenParams);//from w ww. j a v a 2 s . com AsymmetricCipherKeyPair keypair = generator.generateKeyPair(); ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate(); ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic(); ECKeyPair k = new ECKeyPair(); k.priv = privParams.getD(); k.compressed = compressed; if (compressed) { ECPoint q = pubParams.getQ(); k.pub = new ECPoint.Fp(domain.getCurve(), q.getX(), q.getY(), true).getEncoded(); } else { k.pub = pubParams.getQ().getEncoded(); } return k; }
From source file:com.DSC.crypto.ECKey.java
License:Open Source License
/** * ECKey object constructor/* www . ja v a2 s . co m*/ * @param param ECDomainParameters for creating the elliptic curve keypair */ public ECKey(ECDomainParameters param) { /* Instantiate the elliptic curve key parameters */ this.ECKeyPairGen = new ECKeyPairGenerator(); this.keyGenParam = new ECKeyGenerationParameters(param, new SecureRandom()); }
From source file:com.DSC.crypto.ECKey.java
License:Open Source License
/** * ECKey object constructor, uses the default key domain parameters */// w w w.j a v a2s. c o m public ECKey() { ECKeyParam param = new ECKeyParam(); /* Instantiate the elliptic curve key parameters */ this.ECKeyPairGen = new ECKeyPairGenerator(); this.keyGenParam = new ECKeyGenerationParameters(param.getECDomainParam(), new SecureRandom()); }
From source file:com.google.bitcoin.core.ECKey.java
License:Apache License
/** * Generates an entirely new keypair. Point compression is used so the resulting public key will be 33 bytes * (32 for the co-ordinate and 1 byte to represent the y bit). *///from w ww . j a v a 2s . c o m public ECKey() { ECKeyPairGenerator generator = new ECKeyPairGenerator(); ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, secureRandom); generator.init(keygenParams); AsymmetricCipherKeyPair keypair = generator.generateKeyPair(); ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate(); ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic(); priv = privParams.getD(); // Unfortunately Bouncy Castle does not let us explicitly change a point to be compressed, even though it // could easily do so. We must re-build it here so the ECPoints withCompression flag can be set to true. ECPoint uncompressed = pubParams.getQ(); ECPoint compressed = compressPoint(uncompressed); pub = compressed.getEncoded(); creationTimeSeconds = Utils.currentTimeMillis() / 1000; }
From source file:com.licel.jcardsim.crypto.ECKeyImpl.java
License:Apache License
/** * Get/*from w w w . j a v a 2 s.c o m*/ * <code>ECKeyGenerationParameters</code> * * @param rnd Secure Random Generator * @return parameters for use with BouncyCastle API */ public KeyGenerationParameters getKeyGenerationParameters(SecureRandom rnd) { if (isDomainParametersInitialized()) { return new ECKeyGenerationParameters(getDomainParameters(), rnd); } return new ECKeyGenerationParameters(getDefaultsDomainParameters(type, size), rnd); }
From source file:com.licel.jcardsim.crypto.ECKeyImpl.java
License:Apache License
/** * Get default/* w w w. j av a2 s . c o m*/ * <code>ECKeyGenerationParameters</code> * * @param algorithm * @param keySize key size in bits * @param rnd Secure Random Generator * @return parameters for use with BouncyCastle API */ static KeyGenerationParameters getDefaultKeyGenerationParameters(byte algorithm, short keySize, SecureRandom rnd) { byte keyType = algorithm == KeyPair.ALG_EC_FP ? KeyBuilder.TYPE_EC_FP_PUBLIC : KeyBuilder.TYPE_EC_F2M_PUBLIC; return new ECKeyGenerationParameters(getDefaultsDomainParameters(keyType, keySize), rnd); }
From source file:common.crypto.bouncycastle.CEccKeyGeneratorBC.java
License:Open Source License
@Override public void initialize(IX9ECParameters curveSpec) throws Exception { ECDomainParameters domainParams = new ECDomainParameters( (ECCurve.Fp) ((IAdapter) curveSpec.getCurveFP()).getObject(), (ECPoint.Fp) ((IAdapter) curveSpec.getG()).getObject(), curveSpec.getN()); m_keyGen = null;//from w w w . ja va 2 s. c o m m_keyGen = new ECKeyPairGenerator(); m_keyGen.init(new ECKeyGenerationParameters(domainParams, new SecureRandom())); }
From source file:COSE.OneKey.java
static private OneKey generateECDSAKey(String curveName, CBORObject curve) { X9ECParameters p = NISTNamedCurves.getByName(curveName); ECDomainParameters parameters = new ECDomainParameters(p.getCurve(), p.getG(), p.getN(), p.getH()); ECKeyPairGenerator pGen = new ECKeyPairGenerator(); ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(parameters, null); pGen.init(genParam);//from w ww. j a v a 2 s.com AsymmetricCipherKeyPair p1 = pGen.generateKeyPair(); ECPublicKeyParameters keyPublic = (ECPublicKeyParameters) p1.getPublic(); ECPrivateKeyParameters keyPrivate = (ECPrivateKeyParameters) p1.getPrivate(); byte[] rgbX = keyPublic.getQ().normalize().getXCoord().getEncoded(); byte[] rgbY = keyPublic.getQ().normalize().getYCoord().getEncoded(); boolean signY = true; byte[] rgbD = keyPrivate.getD().toByteArray(); OneKey key = new OneKey(); key.add(KeyKeys.KeyType, KeyKeys.KeyType_EC2); key.add(KeyKeys.EC2_Curve, curve); key.add(KeyKeys.EC2_X, CBORObject.FromObject(rgbX)); key.add(KeyKeys.EC2_Y, CBORObject.FromObject(rgbY)); key.add(KeyKeys.EC2_D, CBORObject.FromObject(rgbD)); return key; }
From source file:COSE.Recipient.java
private void ECDH_GenerateEphemeral() throws CoseException { X9ECParameters p = privateKey.GetCurve(); ECDomainParameters parameters = new ECDomainParameters(p.getCurve(), p.getG(), p.getN(), p.getH()); ECKeyPairGenerator pGen = new ECKeyPairGenerator(); ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(parameters, null); pGen.init(genParam);//w ww. j a v a 2 s.c om AsymmetricCipherKeyPair p1 = pGen.generateKeyPair(); CBORObject epk = CBORObject.NewMap(); epk.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2); epk.Add(KeyKeys.EC2_Curve.AsCBOR(), privateKey.get(KeyKeys.EC2_Curve.AsCBOR())); ECPublicKeyParameters priv = (ECPublicKeyParameters) p1.getPublic(); byte[] rgbEncoded = priv.getQ().normalize().getEncoded(true); byte[] X = new byte[rgbEncoded.length - 1]; System.arraycopy(rgbEncoded, 1, X, 0, X.length); epk.Add(KeyKeys.EC2_X.AsCBOR(), CBORObject.FromObject(X)); epk.Add(KeyKeys.EC2_Y.AsCBOR(), CBORObject.FromObject((rgbEncoded[0] & 1) == 1)); addAttribute(HeaderKeys.ECDH_EPK, epk, Attribute.UNPROTECTED); OneKey secretKey = new OneKey(); secretKey.add(KeyKeys.KeyType, KeyKeys.KeyType_EC2); secretKey.add(KeyKeys.EC2_Curve, privateKey.get(KeyKeys.EC2_Curve.AsCBOR())); secretKey.add(KeyKeys.EC2_X, CBORObject.FromObject(X)); secretKey.add(KeyKeys.EC2_Y, CBORObject.FromObject((rgbEncoded[0] & 1) == 1)); ECPrivateKeyParameters priv1 = (ECPrivateKeyParameters) p1.getPrivate(); secretKey.add(KeyKeys.EC2_D, CBORObject.FromObject(BigIntegers.asUnsignedByteArray(priv1.getD()))); senderKey = secretKey; }