Package org.bouncycastle.crypto.params

Examples of org.bouncycastle.crypto.params.ECPublicKeyParameters

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  }

  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();
  }
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    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));
  }
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        if (key instanceof ECPublicKey)
        {
            ECPublicKey    k = (ECPublicKey)key;
            ECParameterSpec s = k.getParams();

            return new ECPublicKeyParameters(
                            k.getQ(),
                            new ECDomainParameters(s.getCurve(), s.getG(), s.getN()));
        }

        throw new InvalidKeyException("can't identify EC public key.");
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        {
            throw new IllegalStateException("EC Key Pair Generator not initialised");
        }

        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
        ECPublicKeyParameters pub = (ECPublicKeyParameters)pair.getPublic();
        ECPrivateKeyParameters priv = (ECPrivateKeyParameters)pair.getPrivate();

        if (ecParams instanceof ECParameterSpec)
        {
            ECParameterSpec p = (ECParameterSpec)ecParams;
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                throw new InvalidKeyException(kaAlgorithm + " key agreement requires "
                    + getSimpleName(MQVPublicKey.class) + " for doPhase");
            }

            MQVPublicKey mqvPubKey = (MQVPublicKey)key;
            ECPublicKeyParameters staticKey = (ECPublicKeyParameters)
                ECUtil.generatePublicKeyParameter(mqvPubKey.getStaticKey());
            ECPublicKeyParameters ephemKey = (ECPublicKeyParameters)
                ECUtil.generatePublicKeyParameter(mqvPubKey.getEphemeralKey());

            pubKey = new MQVPublicParameters(staticKey, ephemKey);

            // TODO Validate that all the keys are using the same parameters?
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            ECPrivateKeyParameters staticPrivKey = (ECPrivateKeyParameters)
                ECUtil.generatePrivateKeyParameter(mqvPrivKey.getStaticPrivateKey());
            ECPrivateKeyParameters ephemPrivKey = (ECPrivateKeyParameters)
                ECUtil.generatePrivateKeyParameter(mqvPrivKey.getEphemeralPrivateKey());

            ECPublicKeyParameters ephemPubKey = null;
            if (mqvPrivKey.getEphemeralPublicKey() != null)
            {
                ephemPubKey = (ECPublicKeyParameters)
                    ECUtil.generatePublicKeyParameter(mqvPrivKey.getEphemeralPublicKey());
            }
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    {

        try
        {
            ECPoint Y = deserializeECPoint(ecPointFormats, curve_params.getCurve(), encoding);
            return new ECPublicKeyParameters(Y, curve_params);
        }
        catch (RuntimeException e)
        {
            throw new TlsFatalAlert(AlertDescription.illegal_parameter);
        }
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    }

    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();
    }
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    }

    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();
    }
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            // TODO We lose any named parameters here
           
            ECDomainParameters dParams = new ECDomainParameters(
                    x9.getCurve(), x9.getG(), x9.getN(), x9.getH(), x9.getSeed());

            return new ECPublicKeyParameters(derQ.getPoint(), dParams);
        }
        else
        {
            throw new RuntimeException("algorithm identifier in key not recognised");
        }
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Related Classes of org.bouncycastle.crypto.params.ECPublicKeyParameters

  • com.bitsofproof.supernode.common.ECKeyPair
  • com.nimbusds.jose.crypto.ECDSAVerifier
  • org.bouncycastle.crypto.agreement.ECDHBasicAgreement
  • org.bouncycastle.crypto.agreement.ECDHCBasicAgreement
  • org.bouncycastle.crypto.generators.DSTU4145KeyPairGenerator
  • org.bouncycastle.crypto.generators.ECKeyPairGenerator
  • org.bouncycastle.crypto.parsers.ECIESPublicKeyParser
  • org.bouncycastle.crypto.signers.ECNRSigner
  • org.bouncycastle.crypto.test.ECTest$ECDSA192bitPrime
  • org.bouncycastle.crypto.test.ECTest$ECDSA239bitPrime
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