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Example 1 with DSAPrivateKeyParameters

use of org.bouncycastle.crypto.params.DSAPrivateKeyParameters in project robovm by robovm.

the class PrivateKeyFactory method createKey.

/**
     * Create a private key parameter from the passed in PKCS8 PrivateKeyInfo object.
     * 
     * @param keyInfo the PrivateKeyInfo object containing the key material
     * @return a suitable private key parameter
     * @throws IOException on an error decoding the key
     */
public static AsymmetricKeyParameter createKey(PrivateKeyInfo keyInfo) throws IOException {
    AlgorithmIdentifier algId = keyInfo.getPrivateKeyAlgorithm();
    if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.rsaEncryption)) {
        RSAPrivateKey keyStructure = RSAPrivateKey.getInstance(keyInfo.parsePrivateKey());
        return new RSAPrivateCrtKeyParameters(keyStructure.getModulus(), keyStructure.getPublicExponent(), keyStructure.getPrivateExponent(), keyStructure.getPrime1(), keyStructure.getPrime2(), keyStructure.getExponent1(), keyStructure.getExponent2(), keyStructure.getCoefficient());
    } else //      else if (algId.getObjectId().equals(X9ObjectIdentifiers.dhpublicnumber))
    if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.dhKeyAgreement)) {
        DHParameter params = DHParameter.getInstance(algId.getParameters());
        ASN1Integer derX = (ASN1Integer) keyInfo.parsePrivateKey();
        BigInteger lVal = params.getL();
        int l = lVal == null ? 0 : lVal.intValue();
        DHParameters dhParams = new DHParameters(params.getP(), params.getG(), null, l);
        return new DHPrivateKeyParameters(derX.getValue(), dhParams);
    } else // END android-removed
    if (algId.getAlgorithm().equals(X9ObjectIdentifiers.id_dsa)) {
        ASN1Integer derX = (ASN1Integer) keyInfo.parsePrivateKey();
        ASN1Encodable de = algId.getParameters();
        DSAParameters parameters = null;
        if (de != null) {
            DSAParameter params = DSAParameter.getInstance(de.toASN1Primitive());
            parameters = new DSAParameters(params.getP(), params.getQ(), params.getG());
        }
        return new DSAPrivateKeyParameters(derX.getValue(), parameters);
    } else if (algId.getAlgorithm().equals(X9ObjectIdentifiers.id_ecPublicKey)) {
        X962Parameters params = new X962Parameters((ASN1Primitive) algId.getParameters());
        X9ECParameters x9;
        if (params.isNamedCurve()) {
            ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(params.getParameters());
            x9 = X962NamedCurves.getByOID(oid);
            if (x9 == null) {
                x9 = SECNamedCurves.getByOID(oid);
                if (x9 == null) {
                    x9 = NISTNamedCurves.getByOID(oid);
                // BEGIN android-removed
                // if (x9 == null)
                // {
                //     x9 = TeleTrusTNamedCurves.getByOID(oid);
                // }
                // END android-removed
                }
            }
        } else {
            x9 = X9ECParameters.getInstance(params.getParameters());
        }
        ECPrivateKey ec = ECPrivateKey.getInstance(keyInfo.parsePrivateKey());
        BigInteger d = ec.getKey();
        // TODO We lose any named parameters here
        ECDomainParameters dParams = new ECDomainParameters(x9.getCurve(), x9.getG(), x9.getN(), x9.getH(), x9.getSeed());
        return new ECPrivateKeyParameters(d, dParams);
    } else {
        throw new RuntimeException("algorithm identifier in key not recognised");
    }
}
Also used : ECPrivateKey(org.bouncycastle.asn1.sec.ECPrivateKey) ECDomainParameters(org.bouncycastle.crypto.params.ECDomainParameters) DHParameters(org.bouncycastle.crypto.params.DHParameters) DHPrivateKeyParameters(org.bouncycastle.crypto.params.DHPrivateKeyParameters) X9ECParameters(org.bouncycastle.asn1.x9.X9ECParameters) ASN1Integer(org.bouncycastle.asn1.ASN1Integer) AlgorithmIdentifier(org.bouncycastle.asn1.x509.AlgorithmIdentifier) X962Parameters(org.bouncycastle.asn1.x9.X962Parameters) ECPrivateKeyParameters(org.bouncycastle.crypto.params.ECPrivateKeyParameters) DSAPrivateKeyParameters(org.bouncycastle.crypto.params.DSAPrivateKeyParameters) BigInteger(java.math.BigInteger) ASN1Encodable(org.bouncycastle.asn1.ASN1Encodable) DSAParameter(org.bouncycastle.asn1.x509.DSAParameter) RSAPrivateKey(org.bouncycastle.asn1.pkcs.RSAPrivateKey) DHParameter(org.bouncycastle.asn1.pkcs.DHParameter) DSAParameters(org.bouncycastle.crypto.params.DSAParameters) ASN1Primitive(org.bouncycastle.asn1.ASN1Primitive) ASN1ObjectIdentifier(org.bouncycastle.asn1.ASN1ObjectIdentifier) RSAPrivateCrtKeyParameters(org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters)

Example 2 with DSAPrivateKeyParameters

use of org.bouncycastle.crypto.params.DSAPrivateKeyParameters in project XobotOS by xamarin.

the class PrivateKeyFactory method createKey.

/**
     * Create a private key parameter from the passed in PKCS8 PrivateKeyInfo object.
     * 
     * @param keyInfo the PrivateKeyInfo object containing the key material
     * @return a suitable private key parameter
     * @throws IOException on an error decoding the key
     */
public static AsymmetricKeyParameter createKey(PrivateKeyInfo keyInfo) throws IOException {
    AlgorithmIdentifier algId = keyInfo.getAlgorithmId();
    if (algId.getAlgorithm().equals(PKCSObjectIdentifiers.rsaEncryption)) {
        RSAPrivateKeyStructure keyStructure = new RSAPrivateKeyStructure((ASN1Sequence) keyInfo.getPrivateKey());
        return new RSAPrivateCrtKeyParameters(keyStructure.getModulus(), keyStructure.getPublicExponent(), keyStructure.getPrivateExponent(), keyStructure.getPrime1(), keyStructure.getPrime2(), keyStructure.getExponent1(), keyStructure.getExponent2(), keyStructure.getCoefficient());
    } else //      else if (algId.getObjectId().equals(X9ObjectIdentifiers.dhpublicnumber))
    if (algId.getObjectId().equals(PKCSObjectIdentifiers.dhKeyAgreement)) {
        DHParameter params = new DHParameter((ASN1Sequence) keyInfo.getAlgorithmId().getParameters());
        DERInteger derX = (DERInteger) keyInfo.getPrivateKey();
        BigInteger lVal = params.getL();
        int l = lVal == null ? 0 : lVal.intValue();
        DHParameters dhParams = new DHParameters(params.getP(), params.getG(), null, l);
        return new DHPrivateKeyParameters(derX.getValue(), dhParams);
    } else // END android-removed
    if (algId.getObjectId().equals(X9ObjectIdentifiers.id_dsa)) {
        DERInteger derX = (DERInteger) keyInfo.getPrivateKey();
        DEREncodable de = keyInfo.getAlgorithmId().getParameters();
        DSAParameters parameters = null;
        if (de != null) {
            DSAParameter params = DSAParameter.getInstance(de.getDERObject());
            parameters = new DSAParameters(params.getP(), params.getQ(), params.getG());
        }
        return new DSAPrivateKeyParameters(derX.getValue(), parameters);
    } else if (algId.getObjectId().equals(X9ObjectIdentifiers.id_ecPublicKey)) {
        X962Parameters params = new X962Parameters((DERObject) keyInfo.getAlgorithmId().getParameters());
        ECDomainParameters dParams = null;
        if (params.isNamedCurve()) {
            DERObjectIdentifier oid = (DERObjectIdentifier) params.getParameters();
            X9ECParameters ecP = X962NamedCurves.getByOID(oid);
            if (ecP == null) {
                ecP = SECNamedCurves.getByOID(oid);
                if (ecP == null) {
                    ecP = NISTNamedCurves.getByOID(oid);
                // BEGIN android-removed
                // if (ecP == null)
                // {
                //     ecP = TeleTrusTNamedCurves.getByOID(oid);
                // }
                // END android-removed
                }
            }
            dParams = new ECDomainParameters(ecP.getCurve(), ecP.getG(), ecP.getN(), ecP.getH(), ecP.getSeed());
        } else {
            X9ECParameters ecP = new X9ECParameters((ASN1Sequence) params.getParameters());
            dParams = new ECDomainParameters(ecP.getCurve(), ecP.getG(), ecP.getN(), ecP.getH(), ecP.getSeed());
        }
        ECPrivateKeyStructure ec = new ECPrivateKeyStructure((ASN1Sequence) keyInfo.getPrivateKey());
        return new ECPrivateKeyParameters(ec.getKey(), dParams);
    } else {
        throw new RuntimeException("algorithm identifier in key not recognised");
    }
}
Also used : ECDomainParameters(org.bouncycastle.crypto.params.ECDomainParameters) DHParameters(org.bouncycastle.crypto.params.DHParameters) DHPrivateKeyParameters(org.bouncycastle.crypto.params.DHPrivateKeyParameters) X9ECParameters(org.bouncycastle.asn1.x9.X9ECParameters) ECPrivateKeyStructure(org.bouncycastle.asn1.sec.ECPrivateKeyStructure) DERObjectIdentifier(org.bouncycastle.asn1.DERObjectIdentifier) AlgorithmIdentifier(org.bouncycastle.asn1.x509.AlgorithmIdentifier) DERInteger(org.bouncycastle.asn1.DERInteger) X962Parameters(org.bouncycastle.asn1.x9.X962Parameters) ECPrivateKeyParameters(org.bouncycastle.crypto.params.ECPrivateKeyParameters) ASN1Sequence(org.bouncycastle.asn1.ASN1Sequence) DERObject(org.bouncycastle.asn1.DERObject) RSAPrivateKeyStructure(org.bouncycastle.asn1.pkcs.RSAPrivateKeyStructure) DEREncodable(org.bouncycastle.asn1.DEREncodable) DSAPrivateKeyParameters(org.bouncycastle.crypto.params.DSAPrivateKeyParameters) BigInteger(java.math.BigInteger) DSAParameter(org.bouncycastle.asn1.x509.DSAParameter) DHParameter(org.bouncycastle.asn1.pkcs.DHParameter) DSAParameters(org.bouncycastle.crypto.params.DSAParameters) RSAPrivateCrtKeyParameters(org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters)

Example 3 with DSAPrivateKeyParameters

use of org.bouncycastle.crypto.params.DSAPrivateKeyParameters in project XobotOS by xamarin.

the class DSAKeyPairGenerator method generateKeyPair.

public AsymmetricCipherKeyPair generateKeyPair() {
    DSAParameters dsaParams = param.getParameters();
    BigInteger x = generatePrivateKey(dsaParams.getQ(), param.getRandom());
    BigInteger y = calculatePublicKey(dsaParams.getP(), dsaParams.getG(), x);
    return new AsymmetricCipherKeyPair(new DSAPublicKeyParameters(y, dsaParams), new DSAPrivateKeyParameters(x, dsaParams));
}
Also used : DSAPublicKeyParameters(org.bouncycastle.crypto.params.DSAPublicKeyParameters) DSAPrivateKeyParameters(org.bouncycastle.crypto.params.DSAPrivateKeyParameters) BigInteger(java.math.BigInteger) DSAParameters(org.bouncycastle.crypto.params.DSAParameters) AsymmetricCipherKeyPair(org.bouncycastle.crypto.AsymmetricCipherKeyPair)

Example 4 with DSAPrivateKeyParameters

use of org.bouncycastle.crypto.params.DSAPrivateKeyParameters in project robovm by robovm.

the class KeyPairGeneratorSpi method generateKeyPair.

public KeyPair generateKeyPair() {
    if (!initialised) {
        DSAParametersGenerator pGen = new DSAParametersGenerator();
        pGen.init(strength, certainty, random);
        param = new DSAKeyGenerationParameters(random, pGen.generateParameters());
        engine.init(param);
        initialised = true;
    }
    AsymmetricCipherKeyPair pair = engine.generateKeyPair();
    DSAPublicKeyParameters pub = (DSAPublicKeyParameters) pair.getPublic();
    DSAPrivateKeyParameters priv = (DSAPrivateKeyParameters) pair.getPrivate();
    return new KeyPair(new BCDSAPublicKey(pub), new BCDSAPrivateKey(priv));
}
Also used : DSAParametersGenerator(org.bouncycastle.crypto.generators.DSAParametersGenerator) DSAPublicKeyParameters(org.bouncycastle.crypto.params.DSAPublicKeyParameters) KeyPair(java.security.KeyPair) AsymmetricCipherKeyPair(org.bouncycastle.crypto.AsymmetricCipherKeyPair) DSAKeyGenerationParameters(org.bouncycastle.crypto.params.DSAKeyGenerationParameters) DSAPrivateKeyParameters(org.bouncycastle.crypto.params.DSAPrivateKeyParameters) AsymmetricCipherKeyPair(org.bouncycastle.crypto.AsymmetricCipherKeyPair)

Example 5 with DSAPrivateKeyParameters

use of org.bouncycastle.crypto.params.DSAPrivateKeyParameters in project robovm by robovm.

the class DSAKeyPairGenerator method generateKeyPair.

public AsymmetricCipherKeyPair generateKeyPair() {
    DSAParameters dsaParams = param.getParameters();
    BigInteger x = generatePrivateKey(dsaParams.getQ(), param.getRandom());
    BigInteger y = calculatePublicKey(dsaParams.getP(), dsaParams.getG(), x);
    return new AsymmetricCipherKeyPair(new DSAPublicKeyParameters(y, dsaParams), new DSAPrivateKeyParameters(x, dsaParams));
}
Also used : DSAPublicKeyParameters(org.bouncycastle.crypto.params.DSAPublicKeyParameters) DSAPrivateKeyParameters(org.bouncycastle.crypto.params.DSAPrivateKeyParameters) BigInteger(java.math.BigInteger) DSAParameters(org.bouncycastle.crypto.params.DSAParameters) AsymmetricCipherKeyPair(org.bouncycastle.crypto.AsymmetricCipherKeyPair)

Aggregations

DSAPrivateKeyParameters (org.bouncycastle.crypto.params.DSAPrivateKeyParameters)8 BigInteger (java.math.BigInteger)7 DSAParameters (org.bouncycastle.crypto.params.DSAParameters)7 AsymmetricCipherKeyPair (org.bouncycastle.crypto.AsymmetricCipherKeyPair)3 DSAPublicKeyParameters (org.bouncycastle.crypto.params.DSAPublicKeyParameters)3 DHParameter (org.bouncycastle.asn1.pkcs.DHParameter)2 AlgorithmIdentifier (org.bouncycastle.asn1.x509.AlgorithmIdentifier)2 DSAParameter (org.bouncycastle.asn1.x509.DSAParameter)2 X962Parameters (org.bouncycastle.asn1.x9.X962Parameters)2 X9ECParameters (org.bouncycastle.asn1.x9.X9ECParameters)2 DHParameters (org.bouncycastle.crypto.params.DHParameters)2 DHPrivateKeyParameters (org.bouncycastle.crypto.params.DHPrivateKeyParameters)2 ECDomainParameters (org.bouncycastle.crypto.params.ECDomainParameters)2 ECPrivateKeyParameters (org.bouncycastle.crypto.params.ECPrivateKeyParameters)2 RSAPrivateCrtKeyParameters (org.bouncycastle.crypto.params.RSAPrivateCrtKeyParameters)2 KeyPair (java.security.KeyPair)1 ASN1Encodable (org.bouncycastle.asn1.ASN1Encodable)1 ASN1Integer (org.bouncycastle.asn1.ASN1Integer)1 ASN1ObjectIdentifier (org.bouncycastle.asn1.ASN1ObjectIdentifier)1 ASN1Primitive (org.bouncycastle.asn1.ASN1Primitive)1