public boolean equals( Object obj) { if (!(obj instanceof GOST3410Parameters)) { return false; } GOST3410Parameters pm = (GOST3410Parameters)obj; return (pm.getP().equals(p) && pm.getQ().equals(q) && pm.getA().equals(a)); } }
public boolean equals( Object obj) { if (!(obj instanceof GOST3410Parameters)) { return false; } GOST3410Parameters pm = (GOST3410Parameters)obj; return (pm.getP().equals(p) && pm.getQ().equals(q) && pm.getA().equals(a)); } }
BigInteger r = params.getA().modPow(k, params.getP()).mod(params.getQ());
BigInteger r = params.getA().modPow(k, params.getP()).mod(params.getQ());
BigInteger z2 = (params.getQ().subtract(r)).multiply(v).mod(params.getQ()); z1 = params.getA().modPow(z1, params.getP()); z2 = ((GOST3410PublicKeyParameters)key).getY().modPow(z2, params.getP());
BigInteger z2 = (params.getQ().subtract(r)).multiply(v).mod(params.getQ()); z1 = params.getA().modPow(z1, params.getP()); z2 = ((GOST3410PublicKeyParameters)key).getY().modPow(z2, params.getP());
public AsymmetricCipherKeyPair generateKeyPair() { BigInteger p, q, a, x, y; GOST3410Parameters GOST3410Params = param.getParameters(); SecureRandom random = param.getRandom(); q = GOST3410Params.getQ(); p = GOST3410Params.getP(); a = GOST3410Params.getA(); do { x = new BigInteger(256, random); } while (x.equals(ZERO) || x.compareTo(q) >= 0); // // calculate the public key. // y = a.modPow(x, p); return new AsymmetricCipherKeyPair( new GOST3410PublicKeyParameters(y, GOST3410Params), new GOST3410PrivateKeyParameters(x, GOST3410Params)); } }
protected AlgorithmParameters engineGenerateParameters() { GOST3410ParametersGenerator pGen = new GOST3410ParametersGenerator(); if (random != null) { pGen.init(strength, 2, random); } else { pGen.init(strength, 2, new SecureRandom()); } GOST3410Parameters p = pGen.generateParameters(); AlgorithmParameters params; try { params = createParametersInstance("GOST3410"); params.init(new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec(p.getP(), p.getQ(), p.getA()))); } catch (Exception e) { throw new RuntimeException(e.getMessage()); } return params; } }
protected AlgorithmParameters engineGenerateParameters() { GOST3410ParametersGenerator pGen = new GOST3410ParametersGenerator(); if (random != null) { pGen.init(strength, 2, random); } else { pGen.init(strength, 2, new SecureRandom()); } GOST3410Parameters p = pGen.generateParameters(); AlgorithmParameters params; try { params = AlgorithmParameters.getInstance("GOST3410", BouncyCastleProvider.PROVIDER_NAME); params.init(new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec(p.getP(), p.getQ(), p.getA()))); } catch (Exception e) { throw new RuntimeException(e.getMessage()); } return params; } }
a = GOST3410Params.getA();