Examples with DSAPrivateKey java.security.interfaces.DSAPrivateKey used on opensource projects

Example 1 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project robovm by robovm.

the class DSAPublicKeyTest method test_getY.

/**
     * java.security.interfaces.DSAPublicKey
     * #getY()
     * test covers following use cases
     *   Case 1: check with predefined p, q, g, x
     *   Case 2: check with random p, q, g, x. It takes some time (up to
     *           minute)
     */
public void test_getY() throws Exception {
    KeyPairGenerator keyGen = null;
    KeyPair keys = null;
    DSAPrivateKey priv = null;
    DSAPublicKey publ = null;
    // Case 1: check with predefined p, q, g, x
    keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(new DSAParameterSpec(Util.P, Util.Q, Util.G), new SecureRandom(new MySecureRandomSpi(), null) {
    });
    keys = keyGen.generateKeyPair();
    priv = (DSAPrivateKey) keys.getPrivate();
    publ = (DSAPublicKey) keys.getPublic();
    assertNotNull("Invalid Y value", publ.getY());
    // Case 2: check with random p, q, g, x. It takes some time (up to
    // minute)
    keyGen = KeyPairGenerator.getInstance("DSA");
    keys = keyGen.generateKeyPair();
    priv = (DSAPrivateKey) keys.getPrivate();
    publ = (DSAPublicKey) keys.getPublic();
    assertNotNull("Invalid Y value", publ.getY());
}

Example 2 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project XobotOS by xamarin.

the class DSAKeyFactoryImpl method engineGetKeySpec.

/**
     * This method returns a specification for the supplied key.
     *
     * The specification will be returned in the form of an object of the type
     * specified by keySpec.
     *
     * @param key -
     *            either DSAPrivateKey or DSAPublicKey
     * @param keySpec -
     *            either DSAPrivateKeySpec.class or DSAPublicKeySpec.class
     *
     * @return either a DSAPrivateKeySpec or a DSAPublicKeySpec
     *
     * @throws InvalidKeySpecException
     *             if "keySpec" is not a specification for DSAPublicKey or
     *             DSAPrivateKey
     */
protected <T extends KeySpec> T engineGetKeySpec(Key key, Class<T> keySpec) throws InvalidKeySpecException {
    BigInteger p, q, g, x, y;
    if (key != null) {
        if (keySpec == null) {
            throw new NullPointerException("keySpec == null");
        }
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey privateKey = (DSAPrivateKey) key;
            if (keySpec.equals(DSAPrivateKeySpec.class)) {
                x = privateKey.getX();
                DSAParams params = privateKey.getParams();
                p = params.getP();
                q = params.getQ();
                g = params.getG();
                return (T) (new DSAPrivateKeySpec(x, p, q, g));
            }
            if (keySpec.equals(PKCS8EncodedKeySpec.class)) {
                return (T) (new PKCS8EncodedKeySpec(key.getEncoded()));
            }
            throw new InvalidKeySpecException("'keySpec' is neither DSAPrivateKeySpec nor PKCS8EncodedKeySpec");
        }
        if (key instanceof DSAPublicKey) {
            DSAPublicKey publicKey = (DSAPublicKey) key;
            if (keySpec.equals(DSAPublicKeySpec.class)) {
                y = publicKey.getY();
                DSAParams params = publicKey.getParams();
                p = params.getP();
                q = params.getQ();
                g = params.getG();
                return (T) (new DSAPublicKeySpec(y, p, q, g));
            }
            if (keySpec.equals(X509EncodedKeySpec.class)) {
                return (T) (new X509EncodedKeySpec(key.getEncoded()));
            }
            throw new InvalidKeySpecException("'keySpec' is neither DSAPublicKeySpec nor X509EncodedKeySpec");
        }
    }
    throw new InvalidKeySpecException("'key' is neither DSAPublicKey nor DSAPrivateKey");
}

Example 3 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project XobotOS by xamarin.

the class DSAKeyFactoryImpl method engineTranslateKey.

/**
     * The method generates a DSAPublicKey object from the provided key.
     *
     * @param
     *    key - a DSAPublicKey object or DSAPrivateKey object.
     *
     * @return
     *    object of the same type as the "key" argument
     *
     * @throws InvalidKeyException
     *     if "key" is neither DSAPublicKey nor DSAPrivateKey
     */
protected Key engineTranslateKey(Key key) throws InvalidKeyException {
    if (key != null) {
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey privateKey = (DSAPrivateKey) key;
            DSAParams params = privateKey.getParams();
            try {
                return engineGeneratePrivate(new DSAPrivateKeySpec(privateKey.getX(), params.getP(), params.getQ(), params.getG()));
            } catch (InvalidKeySpecException e) {
                // Actually this exception shouldn't be thrown
                throw new InvalidKeyException("ATTENTION: InvalidKeySpecException: " + e);
            }
        }
        if (key instanceof DSAPublicKey) {
            DSAPublicKey publicKey = (DSAPublicKey) key;
            DSAParams params = publicKey.getParams();
            try {
                return engineGeneratePublic(new DSAPublicKeySpec(publicKey.getY(), params.getP(), params.getQ(), params.getG()));
            } catch (InvalidKeySpecException e) {
                // Actually this exception shouldn't be thrown
                throw new InvalidKeyException("ATTENTION: InvalidKeySpecException: " + e);
            }
        }
    }
    throw new InvalidKeyException("'key' is neither DSAPublicKey nor DSAPrivateKey");
}

Example 4 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project XobotOS by xamarin.

the class MiscPEMGenerator method createPemObject.

private PemObject createPemObject(Object o) throws IOException {
    String type;
    byte[] encoding;
    if (o instanceof PemObject) {
        return (PemObject) o;
    }
    if (o instanceof PemObjectGenerator) {
        return ((PemObjectGenerator) o).generate();
    }
    if (o instanceof X509Certificate) {
        type = "CERTIFICATE";
        try {
            encoding = ((X509Certificate) o).getEncoded();
        } catch (CertificateEncodingException e) {
            throw new PemGenerationException("Cannot encode object: " + e.toString());
        }
    } else if (o instanceof X509CRL) {
        type = "X509 CRL";
        try {
            encoding = ((X509CRL) o).getEncoded();
        } catch (CRLException e) {
            throw new PemGenerationException("Cannot encode object: " + e.toString());
        }
    } else if (o instanceof KeyPair) {
        return createPemObject(((KeyPair) o).getPrivate());
    } else if (o instanceof PrivateKey) {
        PrivateKeyInfo info = new PrivateKeyInfo((ASN1Sequence) ASN1Object.fromByteArray(((Key) o).getEncoded()));
        if (o instanceof RSAPrivateKey) {
            type = "RSA PRIVATE KEY";
            encoding = info.getPrivateKey().getEncoded();
        } else if (o instanceof DSAPrivateKey) {
            type = "DSA PRIVATE KEY";
            DSAParameter p = DSAParameter.getInstance(info.getAlgorithmId().getParameters());
            ASN1EncodableVector v = new ASN1EncodableVector();
            v.add(new DERInteger(0));
            v.add(new DERInteger(p.getP()));
            v.add(new DERInteger(p.getQ()));
            v.add(new DERInteger(p.getG()));
            BigInteger x = ((DSAPrivateKey) o).getX();
            BigInteger y = p.getG().modPow(x, p.getP());
            v.add(new DERInteger(y));
            v.add(new DERInteger(x));
            encoding = new DERSequence(v).getEncoded();
        } else if (((PrivateKey) o).getAlgorithm().equals("ECDSA")) {
            type = "EC PRIVATE KEY";
            encoding = info.getPrivateKey().getEncoded();
        } else {
            throw new IOException("Cannot identify private key");
        }
    } else if (o instanceof PublicKey) {
        type = "PUBLIC KEY";
        encoding = ((PublicKey) o).getEncoded();
    } else if (o instanceof X509AttributeCertificate) {
        type = "ATTRIBUTE CERTIFICATE";
        encoding = ((X509V2AttributeCertificate) o).getEncoded();
    } else if (o instanceof PKCS10CertificationRequest) {
        type = "CERTIFICATE REQUEST";
        encoding = ((PKCS10CertificationRequest) o).getEncoded();
    } else if (o instanceof ContentInfo) {
        type = "PKCS7";
        encoding = ((ContentInfo) o).getEncoded();
    } else {
        throw new PemGenerationException("unknown object passed - can't encode.");
    }
    return new PemObject(type, encoding);
}

Example 5 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project XobotOS by xamarin.

the class MiscPEMGenerator method createPemObject.

private PemObject createPemObject(Object obj, String algorithm, char[] password, SecureRandom random) throws IOException {
    if (obj instanceof KeyPair) {
        return createPemObject(((KeyPair) obj).getPrivate(), algorithm, password, random);
    }
    String type = null;
    byte[] keyData = null;
    if (obj instanceof RSAPrivateCrtKey) {
        type = "RSA PRIVATE KEY";
        RSAPrivateCrtKey k = (RSAPrivateCrtKey) obj;
        RSAPrivateKeyStructure keyStruct = new RSAPrivateKeyStructure(k.getModulus(), k.getPublicExponent(), k.getPrivateExponent(), k.getPrimeP(), k.getPrimeQ(), k.getPrimeExponentP(), k.getPrimeExponentQ(), k.getCrtCoefficient());
        // convert to bytearray
        keyData = keyStruct.getEncoded();
    } else if (obj instanceof DSAPrivateKey) {
        type = "DSA PRIVATE KEY";
        DSAPrivateKey k = (DSAPrivateKey) obj;
        DSAParams p = k.getParams();
        ASN1EncodableVector v = new ASN1EncodableVector();
        v.add(new DERInteger(0));
        v.add(new DERInteger(p.getP()));
        v.add(new DERInteger(p.getQ()));
        v.add(new DERInteger(p.getG()));
        BigInteger x = k.getX();
        BigInteger y = p.getG().modPow(x, p.getP());
        v.add(new DERInteger(y));
        v.add(new DERInteger(x));
        keyData = new DERSequence(v).getEncoded();
    } else if (obj instanceof PrivateKey && "ECDSA".equals(((PrivateKey) obj).getAlgorithm())) {
        type = "EC PRIVATE KEY";
        PrivateKeyInfo privInfo = PrivateKeyInfo.getInstance(ASN1Object.fromByteArray(((PrivateKey) obj).getEncoded()));
        keyData = privInfo.getPrivateKey().getEncoded();
    }
    if (type == null || keyData == null) {
        // TODO Support other types?
        throw new IllegalArgumentException("Object type not supported: " + obj.getClass().getName());
    }
    String dekAlgName = Strings.toUpperCase(algorithm);
    // Note: For backward compatibility
    if (dekAlgName.equals("DESEDE")) {
        dekAlgName = "DES-EDE3-CBC";
    }
    int ivLength = dekAlgName.startsWith("AES-") ? 16 : 8;
    byte[] iv = new byte[ivLength];
    random.nextBytes(iv);
    byte[] encData = PEMUtilities.crypt(true, provider, keyData, password, dekAlgName, iv);
    List headers = new ArrayList(2);
    headers.add(new PemHeader("Proc-Type", "4,ENCRYPTED"));
    headers.add(new PemHeader("DEK-Info", dekAlgName + "," + getHexEncoded(iv)));
    return new PemObject(type, headers, encData);
}