Package org.bouncycastle.math.ec

Examples of org.bouncycastle.math.ec.ECPoint$F2m

36
37
38
39
40
41
42
43
44
45
46
  public BigInteger calculateAgreement(
        CipherParameters pubKey)
  {
        ECPublicKeyParameters pub = (ECPublicKeyParameters)pubKey;
    ECPoint P = pub.getQ().multiply(key.getD());

    // if ( p.isInfinity() ) throw new RuntimeException("d*Q == infinity");

    return P.getX().toBigInteger();
  }
View Full Code Here
155
156
157
158
159
160
161
162
163
164
165
     rawdataToPubkey(
       byte[] input )
    
       throws CryptoManagerException
     {
       ECPoint W = ECCparam.getCurve().decodePoint(input);
      
       KeySpec keyspec = new ECPublicKeySpec(W,(ECParameterSpec)ECCparam);

       try{
        
View Full Code Here
76
77
78
79
80
81
82
83
84
85
86
87
88
89
        {
          k = new BigInteger(nBitLength, random);
        }
        while (k.equals(ZERO));

        ECPoint p = key.getParameters().getG().multiply(k);

        // 5.3.3
        BigInteger x = p.getX().toBigInteger();

        r = x.mod(n);
      }
      while ( r.equals(ZERO) );
View Full Code Here
130
131
132
133
134
135
136
137
138
139
140
141
142
143
    BigInteger c = s.modInverse(n);

    BigInteger u1 = e.multiply(c).mod(n);
    BigInteger u2 = r.multiply(c).mod(n);

    ECPoint G = key.getParameters().getG();
    ECPoint Q = ((ECPublicKeyParameters)key).getQ();

    ECPoint point = G.multiply(u1).add(Q.multiply(u2));

    BigInteger v = point.getX().toBigInteger().mod(n);

    return v.equals(r);
  }
View Full Code Here
42
43
44
45
46
47
48
49
50
51
52
    {
      d = new BigInteger(nBitLength, random);
    }
    while (d.equals(ZERO)  || (d.compareTo(n) >= 0));

    ECPoint Q = params.getG().multiply(d);

    return new AsymmetricCipherKeyPair(
            new ECPublicKeyParameters(Q, params),
      new ECPrivateKeyParameters(d, params));
  }
View Full Code Here
372
373
374
375
376
377
378
379
380
381
382
        throws IOException
    {

        try
        {
            ECPoint Y = deserializeECPoint(ecPointFormats, curve_params.getCurve(), encoding);
            return new ECPublicKeyParameters(Y, curve_params);
        }
        catch (RuntimeException e)
        {
            throw new TlsFatalAlert(AlertDescription.illegal_parameter);
View Full Code Here
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
            {
                BigInteger prime_p = readECParameter(input);
                BigInteger a = readECFieldElement(prime_p.bitLength(), input);
                BigInteger b = readECFieldElement(prime_p.bitLength(), input);
                ECCurve curve = new ECCurve.Fp(prime_p, a, b);
                ECPoint base = deserializeECPoint(ecPointFormats, curve, TlsUtils.readOpaque8(input));
                BigInteger order = readECParameter(input);
                BigInteger cofactor = readECParameter(input);
                return new ECDomainParameters(curve, base, order, cofactor);
            }
            case ECCurveType.explicit_char2:
            {
                int m = TlsUtils.readUint16(input);
                short basis = TlsUtils.readUint8(input);
                ECCurve curve;
                switch (basis)
                {
                case ECBasisType.ec_basis_trinomial:
                {
                    int k = readECExponent(m, input);
                    BigInteger a = readECFieldElement(m, input);
                    BigInteger b = readECFieldElement(m, input);
                    curve = new ECCurve.F2m(m, k, a, b);
                    break;
                }
                case ECBasisType.ec_basis_pentanomial:
                {
                    int k1 = readECExponent(m, input);
                    int k2 = readECExponent(m, input);
                    int k3 = readECExponent(m, input);
                    BigInteger a = readECFieldElement(m, input);
                    BigInteger b = readECFieldElement(m, input);
                    curve = new ECCurve.F2m(m, k1, k2, k3, a, b);
                    break;
                }
                default:
                    throw new TlsFatalAlert(AlertDescription.illegal_parameter);
                }
                ECPoint base = deserializeECPoint(ecPointFormats, curve, TlsUtils.readOpaque8(input));
                BigInteger order = readECParameter(input);
                BigInteger cofactor = readECParameter(input);
                return new ECDomainParameters(curve, base, order, cofactor);
            }
            case ECCurveType.named_curve:
View Full Code Here
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
        {
            java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)params;
            this.ecParams = params;

            ECCurve curve = EC5Util.convertCurve(p.getCurve());
            ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false);

            param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);

            engine.init(param);
            initialised = true;
        }
        else if (params instanceof ECGenParameterSpec || params instanceof ECNamedCurveGenParameterSpec)
        {
            String curveName;

            if (params instanceof ECGenParameterSpec)
            {
                curveName = ((ECGenParameterSpec)params).getName();
            }
            else
            {
                curveName = ((ECNamedCurveGenParameterSpec)params).getName();
            }

            ECDomainParameters ecP = ECGOST3410NamedCurves.getByName(curveName);
            if (ecP == null)
            {
                throw new InvalidAlgorithmParameterException("unknown curve name: " + curveName);
            }

            this.ecParams = new ECNamedCurveSpec(
                curveName,
                ecP.getCurve(),
                ecP.getG(),
                ecP.getN(),
                ecP.getH(),
                ecP.getSeed());

            java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)ecParams;

            ECCurve curve = EC5Util.convertCurve(p.getCurve());
            ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false);

            param = new ECKeyGenerationParameters(new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random);

            engine.init(param);
            initialised = true;
View Full Code Here
47
48
49
50
51
52
53
54
55
56
57
    public BigInteger calculateAgreement(
        CipherParameters pubKey)
    {
        ECPublicKeyParameters   pub = (ECPublicKeyParameters)pubKey;
        ECDomainParameters      params = pub.getParameters();
        ECPoint P = pub.getQ().multiply(params.getH().multiply(key.getD()));

        // if (p.isInfinity()) throw new RuntimeException("Invalid public key");

        return P.getX().toBigInteger();
    }
View Full Code Here
40
41
42
43
44
45
46
47
48
49
50
    public BigInteger calculateAgreement(
        CipherParameters pubKey)
    {
        ECPublicKeyParameters pub = (ECPublicKeyParameters)pubKey;
        ECPoint P = pub.getQ().multiply(key.getD());

        // if (p.isInfinity()) throw new RuntimeException("d*Q == infinity");

        return P.getX().toBigInteger();
    }
View Full Code Here
TOP

Related Classes of org.bouncycastle.math.ec.ECPoint$F2m

  • com.aelitis.azureus.core.security.CryptoECCUtils
  • com.bitsofproof.supernode.common.ExtendedKey
  • com.nimbusds.jose.crypto.ECDSAVerifier
  • org.bouncycastle.crypto.agreement.ECDHBasicAgreement
  • org.bouncycastle.crypto.agreement.ECDHCBasicAgreement
  • org.bouncycastle.crypto.agreement.ECMQVBasicAgreement
  • org.bouncycastle.crypto.ec.ECElGamalDecryptor
  • org.bouncycastle.crypto.ec.ECElGamalEncryptor
  • org.bouncycastle.crypto.ec.ECNewPublicKeyTransform
  • org.bouncycastle.crypto.ec.ECNewRandomnessTransform
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.