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

Example 21 with DSAPublicKey

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

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 22 with DSAPublicKey

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

the class EncodedKeySpec2Test method isEqual.

private boolean isEqual(Key key1, Key key2) {
    if (key1 instanceof DSAPublicKey && key2 instanceof DSAPublicKey) {
        DSAPublicKey dsa1 = ((DSAPublicKey) key1);
        DSAPublicKey dsa2 = ((DSAPublicKey) key2);
        return dsa1.getY().equals(dsa2.getY()) && dsa1.getParams().getG().equals(dsa2.getParams().getG()) && dsa1.getParams().getP().equals(dsa2.getParams().getP()) && dsa1.getParams().getQ().equals(dsa2.getParams().getQ());
    } else if (key1 instanceof DSAPrivateKey && key2 instanceof DSAPrivateKey) {
        DSAPrivateKey dsa1 = ((DSAPrivateKey) key1);
        DSAPrivateKey dsa2 = ((DSAPrivateKey) key2);
        return dsa1.getX().equals(dsa2.getX()) && dsa1.getParams().getG().equals(dsa2.getParams().getG()) && dsa1.getParams().getP().equals(dsa2.getParams().getP()) && dsa1.getParams().getQ().equals(dsa2.getParams().getQ());
    } else {
        return false;
    }
}

Example 23 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project Conversations by siacs.

the class Account method getOtrFingerprint.

public String getOtrFingerprint() {
    if (this.otrFingerprint == null) {
        try {
            if (this.mOtrService == null) {
                return null;
            }
            final PublicKey publicKey = this.mOtrService.getPublicKey();
            if (publicKey == null || !(publicKey instanceof DSAPublicKey)) {
                return null;
            }
            this.otrFingerprint = new OtrCryptoEngineImpl().getFingerprint(publicKey).toLowerCase(Locale.US);
            return this.otrFingerprint;
        } catch (final OtrCryptoException ignored) {
            return null;
        }
    } else {
        return this.otrFingerprint;
    }
}

Example 24 with DSAPublicKey

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

the class SHA1withDSA_SignatureImpl method engineInitVerify.

/**
     * Initializes this signature object with PublicKey object
     * passed as argument to the method.
     *
     * @params
     *    publicKey DSAPublicKey object
     * @throws
     *    InvalidKeyException if publicKey is not DSAPublicKey object
     */
protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
    // parameters and public key
    BigInteger p, q, y;
    int n1;
    if (publicKey == null || !(publicKey instanceof DSAPublicKey)) {
        throw new InvalidKeyException("publicKey is not an instance of DSAPublicKey");
    }
    DSAParams params = ((DSAPublicKey) publicKey).getParams();
    p = params.getP();
    q = params.getQ();
    y = ((DSAPublicKey) publicKey).getY();
    // checks described in DSA standard
    n1 = p.bitLength();
    if (p.compareTo(BigInteger.valueOf(1)) != 1 || n1 < 512 || n1 > 1024 || (n1 & 077) != 0) {
        throw new InvalidKeyException("bad p");
    }
    if (q.signum() != 1 || q.bitLength() != 160) {
        throw new InvalidKeyException("bad q");
    }
    if (y.signum() != 1) {
        throw new InvalidKeyException("y <= 0");
    }
    dsaKey = (DSAKey) publicKey;
    msgDigest.reset();
}

Example 25 with DSAPublicKey

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

the class OpenSSLSignature method engineInitVerify.

@Override
protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
    if (publicKey instanceof DSAPublicKey) {
        try {
            DSAPublicKey dsaPublicKey = (DSAPublicKey) publicKey;
            DSAParams dsaParams = dsaPublicKey.getParams();
            dsa = NativeCrypto.EVP_PKEY_new_DSA(dsaParams.getP().toByteArray(), dsaParams.getQ().toByteArray(), dsaParams.getG().toByteArray(), dsaPublicKey.getY().toByteArray(), null);
        } catch (Exception e) {
            throw new InvalidKeyException(e);
        }
    } else if (publicKey instanceof RSAPublicKey) {
        try {
            RSAPublicKey rsaPublicKey = (RSAPublicKey) publicKey;
            rsa = NativeCrypto.EVP_PKEY_new_RSA(rsaPublicKey.getModulus().toByteArray(), rsaPublicKey.getPublicExponent().toByteArray(), null, null, null);
        } catch (Exception e) {
            throw new InvalidKeyException(e);
        }
    } else {
        throw new InvalidKeyException("Need DSA or RSA public key");
    }
    try {
        ctx = NativeCrypto.EVP_VerifyInit(evpAlgorithm);
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}