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

Example 71 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project churchkey by tomitribe.

the class BeginPrivateKey method decodeDsaKey.

private static Key decodeDsaKey(final byte[] bytes) throws IOException {
    final Dsa.Private.Builder dsa = Dsa.Private.builder();
    final DerParser d1 = new DerParser(bytes);
    final Asn1Object d1o1 = d1.readObject().assertType(Asn1Type.SEQUENCE);
    {
        final DerParser d2 = new DerParser(d1o1.getValue());
        final Asn1Object d2o1 = d2.readObject().assertType(Asn1Type.INTEGER);
        final Asn1Object d2o2 = d2.readObject().assertType(Asn1Type.SEQUENCE);
        {
            final DerParser d3 = new DerParser(d2o2.getValue());
            final Asn1Object d3o1 = d3.readObject().assertType(Asn1Type.OBJECT_IDENTIFIER);
            final Asn1Object d3o2 = d3.readObject().assertType(Asn1Type.SEQUENCE);
            {
                final DerParser d4 = new DerParser(d3o2.getValue());
                dsa.p(d4.readBigInteger());
                dsa.q(d4.readBigInteger());
                dsa.g(d4.readBigInteger());
            }
        }
        final Asn1Object d2o3 = d2.readObject().assertType(Asn1Type.OCTET_STRING);
        {
            final DerParser d3 = new DerParser(d2o3.getValue());
            dsa.x(d3.readBigInteger());
            final Dsa.Private build = dsa.build();
            final DSAPrivateKey privateKey = build.toKey();
            final DSAPublicKey publicKey = build.toPublic().toKey();
            return new Key(privateKey, publicKey, Key.Type.PRIVATE, DSA, Key.Format.PEM);
        }
    }
}

Example 72 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project churchkey by tomitribe.

the class OpenSSHPrivateKey method writePrivateDssKey.

private static byte[] writePrivateDssKey(final Key key, final KeyOutput out) throws IOException {
    final DSAPublicKey publicKey = (DSAPublicKey) key.getPublicKey().getKey();
    final DSAPrivateKey privateKey = (DSAPrivateKey) key.getKey();
    out.writeBigInteger(privateKey.getParams().getP());
    out.writeBigInteger(privateKey.getParams().getQ());
    out.writeBigInteger(privateKey.getParams().getG());
    out.writeBigInteger(publicKey.getY());
    out.writeBigInteger(privateKey.getX());
    out.writeString(getComment(key));
    return out.toByteArray();
}

Example 73 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project churchkey by tomitribe.

the class Keys method of.

/**
 * Creates a {@link Key} instance that encompasses both the public and private keys.  If this Key
 * instance is exported via {@link Key#encode(Key.Format)}} the resulting file will be a private key
 * file that includes both the public and private key data.
 *
 * The key Algorithm (RSA, DSA, EC) will be discovered automatically.  The Format will default
 * to PEM.  The key Type will be set as PRIVATE.  The corresponding public key can be obtained
 * via {@link Key#getPublicKey()}
 *
 * This method is largely a convenience method for formatting {@link java.security.KeyPair} instances.
 * For example:
 * <code>
 * final KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
 * final KeyPair pair = generator.generateKeyPair();
 *
 * final byte[] openssh = Keys.of(pair).format(OPENSSH);
 * </code>
 */
public static Key of(final KeyPair pair) {
    Objects.requireNonNull(pair);
    final PrivateKey key = pair.getPrivate();
    if (key instanceof DSAPrivateKey) {
        return new Key(pair.getPrivate(), pair.getPublic(), Key.Type.PRIVATE, Key.Algorithm.DSA, Key.Format.PEM);
    }
    if (key instanceof ECPrivateKey) {
        return new Key(pair.getPrivate(), pair.getPublic(), Key.Type.PRIVATE, Key.Algorithm.EC, Key.Format.PEM);
    }
    if (key instanceof RSAPrivateCrtKey) {
        return new Key(pair.getPrivate(), pair.getPublic(), Key.Type.PRIVATE, Key.Algorithm.RSA, Key.Format.PEM);
    }
    if (key instanceof RSAPrivateKey) {
        return new Key(pair.getPrivate(), pair.getPublic(), Key.Type.PRIVATE, Key.Algorithm.RSA, Key.Format.PEM);
    }
    throw new UnsupportedOperationException("Unsupported key type: " + key.getClass().getName());
}

Example 74 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project remote-desktop-clients by iiordanov.

the class PubkeyUtils method recoverKeyPair.

public static KeyPair recoverKeyPair(byte[] encoded) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException {
    KeySpec privKeySpec = new PKCS8EncodedKeySpec(encoded);
    KeySpec pubKeySpec;
    PrivateKey priv;
    PublicKey pub;
    KeyFactory kf;
    try {
        kf = KeyFactory.getInstance(PubkeyDatabase.KEY_TYPE_RSA, new org.bouncycastle.jce.provider.BouncyCastleProvider());
        priv = kf.generatePrivate(privKeySpec);
        pubKeySpec = new RSAPublicKeySpec(((RSAPrivateCrtKey) priv).getModulus(), ((RSAPrivateCrtKey) priv).getPublicExponent());
        pub = kf.generatePublic(pubKeySpec);
    } catch (ClassCastException e) {
        kf = KeyFactory.getInstance(PubkeyDatabase.KEY_TYPE_DSA, new org.bouncycastle.jce.provider.BouncyCastleProvider());
        priv = kf.generatePrivate(privKeySpec);
        DSAParams params = ((DSAPrivateKey) priv).getParams();
        // Calculate public key Y
        BigInteger y = params.getG().modPow(((DSAPrivateKey) priv).getX(), params.getP());
        pubKeySpec = new DSAPublicKeySpec(y, params.getP(), params.getQ(), params.getG());
        pub = kf.generatePublic(pubKeySpec);
    }
    return new KeyPair(pub, priv);
}

Example 75 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project YAPION by yoyosource.

the class DSAKeySpecSerializer method deserializePrivateKey.

@Override
public DSAPrivateKey deserializePrivateKey(DeserializeData<YAPIONObject> deserializeData, String algorithm) throws GeneralSecurityException {
    BigInteger x = deserializeData.object.getValue("x", BigInteger.class).get();
    BigInteger p = deserializeData.object.getValue("p", BigInteger.class).get();
    BigInteger q = deserializeData.object.getValue("q", BigInteger.class).get();
    BigInteger g = deserializeData.object.getValue("g", BigInteger.class).get();
    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    return (DSAPrivateKey) keyFactory.generatePrivate(new DSAPrivateKeySpec(x, p, q, g));
}