Examples with DHDomainParameterSpec com.github.zhenwei.provider.jcajce.spec.DHDomainParameterSpec used on opensource projects

Example 1 with DHDomainParameterSpec

use of com.github.zhenwei.provider.jcajce.spec.DHDomainParameterSpec in project LinLong-Java by zhenwei1108.

the class BouncyCastleProviderConfiguration method getDHDefaultParameters.

public DHParameterSpec getDHDefaultParameters(int keySize) {
    Object params = dhThreadSpec.get();
    if (params == null) {
        params = dhDefaultParams;
    }
    if (params instanceof DHParameterSpec) {
        DHParameterSpec spec = (DHParameterSpec) params;
        if (spec.getP().bitLength() == keySize) {
            return spec;
        }
    } else if (params instanceof DHParameterSpec[]) {
        DHParameterSpec[] specs = (DHParameterSpec[]) params;
        for (int i = 0; i != specs.length; i++) {
            if (specs[i].getP().bitLength() == keySize) {
                return specs[i];
            }
        }
    }
    DHParameters dhParams = CryptoServicesRegistrar.getSizedProperty(CryptoServicesRegistrar.Property.DH_DEFAULT_PARAMS, keySize);
    if (dhParams != null) {
        return new DHDomainParameterSpec(dhParams);
    }
    return null;
}

Example 2 with DHDomainParameterSpec

use of com.github.zhenwei.provider.jcajce.spec.DHDomainParameterSpec in project LinLong-Java by zhenwei1108.

the class BCDHPrivateKey method getEncoded.

/**
 * Return a PKCS8 representation of the key. The sequence returned represents a full
 * PrivateKeyInfo object.
 *
 * @return a PKCS8 representation of the key.
 */
public byte[] getEncoded() {
    try {
        if (info != null) {
            return info.getEncoded(ASN1Encoding.DER);
        }
        PrivateKeyInfo info;
        if (dhSpec instanceof DHDomainParameterSpec && ((DHDomainParameterSpec) dhSpec).getQ() != null) {
            DHParameters params = ((DHDomainParameterSpec) dhSpec).getDomainParameters();
            DHValidationParameters validationParameters = params.getValidationParameters();
            ValidationParams vParams = null;
            if (validationParameters != null) {
                vParams = new ValidationParams(validationParameters.getSeed(), validationParameters.getCounter());
            }
            info = new PrivateKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.dhpublicnumber, new DomainParameters(params.getP(), params.getG(), params.getQ(), params.getJ(), vParams).toASN1Primitive()), new ASN1Integer(getX()));
        } else {
            info = new PrivateKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.dhKeyAgreement, new DHParameter(dhSpec.getP(), dhSpec.getG(), dhSpec.getL()).toASN1Primitive()), new ASN1Integer(getX()));
        }
        return info.getEncoded(ASN1Encoding.DER);
    } catch (Exception e) {
        return null;
    }
}

Example 3 with DHDomainParameterSpec

use of com.github.zhenwei.provider.jcajce.spec.DHDomainParameterSpec in project LinLong-Java by zhenwei1108.

the class BCDHPublicKey method getEncoded.

public byte[] getEncoded() {
    if (info != null) {
        return KeyUtil.getEncodedSubjectPublicKeyInfo(info);
    }
    if (dhSpec instanceof DHDomainParameterSpec && ((DHDomainParameterSpec) dhSpec).getQ() != null) {
        DHParameters params = ((DHDomainParameterSpec) dhSpec).getDomainParameters();
        DHValidationParameters validationParameters = params.getValidationParameters();
        ValidationParams vParams = null;
        if (validationParameters != null) {
            vParams = new ValidationParams(validationParameters.getSeed(), validationParameters.getCounter());
        }
        return KeyUtil.getEncodedSubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.dhpublicnumber, new DomainParameters(params.getP(), params.getG(), params.getQ(), params.getJ(), vParams).toASN1Primitive()), new ASN1Integer(y));
    }
    return KeyUtil.getEncodedSubjectPublicKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.dhKeyAgreement, new DHParameter(dhSpec.getP(), dhSpec.getG(), dhSpec.getL()).toASN1Primitive()), new ASN1Integer(y));
}

Example 4 with DHDomainParameterSpec

use of com.github.zhenwei.provider.jcajce.spec.DHDomainParameterSpec in project LinLong-Java by zhenwei1108.

the class KeyAgreementSpi method generatePublicKeyParameter.

private DHPublicKeyParameters generatePublicKeyParameter(PublicKey pubKey) throws InvalidKeyException {
    if (pubKey instanceof DHPublicKey) {
        if (pubKey instanceof BCDHPublicKey) {
            return ((BCDHPublicKey) pubKey).engineGetKeyParameters();
        } else {
            DHPublicKey pub = (DHPublicKey) pubKey;
            DHParameterSpec params = pub.getParams();
            if (params instanceof DHDomainParameterSpec) {
                return new DHPublicKeyParameters(pub.getY(), ((DHDomainParameterSpec) params).getDomainParameters());
            }
            return new DHPublicKeyParameters(pub.getY(), new DHParameters(params.getP(), params.getG(), null, params.getL()));
        }
    } else {
        throw new InvalidKeyException("public key not a DHPublicKey");
    }
}