Best code snippets using com.trilead.ssh2.signature.DSAPrivateKey(Showing top 12 results out of 315)

public static KeyPair loadKey(String pemString, String passwd) throws IOException, GeneralSecurityException {
  Object key = PEMDecoder.decode(pemString.toCharArray(), passwd);
  if (key instanceof com.trilead.ssh2.signature.RSAPrivateKey) {
    com.trilead.ssh2.signature.RSAPrivateKey x = (com.trilead.ssh2.signature.RSAPrivateKey)key;
    return x.toJCEKeyPair();
  }
  if (key instanceof com.trilead.ssh2.signature.DSAPrivateKey) {
    com.trilead.ssh2.signature.DSAPrivateKey x = (com.trilead.ssh2.signature.DSAPrivateKey)key;
    KeyFactory kf = KeyFactory.getInstance("DSA");
    return new KeyPair(
        kf.generatePublic(new DSAPublicKeySpec(x.getY(), x.getP(), x.getQ(), x.getG())),
        kf.generatePrivate(new DSAPrivateKeySpec(x.getX(), x.getP(), x.getQ(), x.getG())));
  }
  throw new UnsupportedOperationException("Unrecognizable key format: " + key);
}

  /**
   * Extracts a SSH public key from a PEM-encoded SSH private key.
   * @param pem The PEM-encoded string (either RSA or DSA).
   * @param passPhrase The passphrase to decrypt the private key (may be null, if the key is not encrypted).
   * @return A public key string in the form "<pubkey-type> <pubkey-base64>"
   * @throws IOException if pem could not be decoded properly.
   */
  public static String extract(final String pem, final String passPhrase) throws IOException {
    final Object priv = PEMDecoder.decode(pem.toCharArray(), passPhrase);
    if (priv instanceof RSAPrivateKey) {
      return "ssh-rsa " + DatatypeConverter.printBase64Binary(RSASHA1Verify.encodeSSHRSAPublicKey(((RSAPrivateKey)priv).getPublicKey()));
    }
    if (priv instanceof DSAPrivateKey) {
      return "ssh-dss " + DatatypeConverter.printBase64Binary(DSASHA1Verify.encodeSSHDSAPublicKey(((DSAPrivateKey)priv).getPublicKey()));
    }
    throw new IOException("should never happen");
  }
}

  public static DSASignature generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd)
  {
    SHA1 md = new SHA1();
    md.update(message);
    byte[] sha_message = new byte[md.getDigestLength()];
    md.digest(sha_message);

    BigInteger m = new BigInteger(1, sha_message);
    BigInteger k;
    int qBitLength = pk.getQ().bitLength();

    do
    {
      k = new BigInteger(qBitLength, rnd);
    }
    while (k.compareTo(pk.getQ()) >= 0);

    BigInteger r = pk.getG().modPow(k, pk.getP()).mod(pk.getQ());

    k = k.modInverse(pk.getQ()).multiply(m.add((pk).getX().multiply(r)));

    BigInteger s = k.mod(pk.getQ());

    return new DSASignature(r, s);
  }
}

  throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
return new DSAPrivateKey(p, q, g, y, x);

byte[] pk_enc = DSASHA1Verify.encodeSSHDSAPublicKey(pk.getPublicKey());

byte[] pk_enc = DSASHA1Verify.encodeSSHDSAPublicKey(pk.getPublicKey());

  throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
return new DSAPrivateKey(p, q, g, y, x);

  @Deprecated
  public static DSASignature generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd)
  {
    SHA1 md = new SHA1();
    md.update(message);
    byte[] sha_message = new byte[md.getDigestLength()];
    md.digest(sha_message);

    BigInteger m = new BigInteger(1, sha_message);
    BigInteger k;
    int qBitLength = pk.getQ().bitLength();

    do
    {
      k = new BigInteger(qBitLength, rnd);
    }
    while (k.compareTo(pk.getQ()) >= 0);

    BigInteger r = pk.getG().modPow(k, pk.getP()).mod(pk.getQ());

    k = k.modInverse(pk.getQ()).multiply(m.add((pk).getX().multiply(r)));

    BigInteger s = k.mod(pk.getQ());

    return new DSASignature(r, s);
  }
}

  throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
return new DSAPrivateKey(p, q, g, y, x);

  public static DSASignature generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd)
  {
    SHA1 md = new SHA1();
    md.update(message);
    byte[] sha_message = new byte[md.getDigestLength()];
    md.digest(sha_message);

    BigInteger m = new BigInteger(1, sha_message);
    BigInteger k;
    int qBitLength = pk.getQ().bitLength();

    do
    {
      k = new BigInteger(qBitLength, rnd);
    }
    while (k.compareTo(pk.getQ()) >= 0);

    BigInteger r = pk.getG().modPow(k, pk.getP()).mod(pk.getQ());

    k = k.modInverse(pk.getQ()).multiply(m.add((pk).getX().multiply(r)));

    BigInteger s = k.mod(pk.getQ());

    return new DSASignature(r, s);
  }
}

  @Deprecated
  public static DSASignature generateSignature(byte[] message, DSAPrivateKey pk, SecureRandom rnd)
  {
    SHA1 md = new SHA1();
    md.update(message);
    byte[] sha_message = new byte[md.getDigestLength()];
    md.digest(sha_message);

    BigInteger m = new BigInteger(1, sha_message);
    BigInteger k;
    int qBitLength = pk.getQ().bitLength();

    do
    {
      k = new BigInteger(qBitLength, rnd);
    }
    while (k.compareTo(pk.getQ()) >= 0);

    BigInteger r = pk.getG().modPow(k, pk.getP()).mod(pk.getQ());

    k = k.modInverse(pk.getQ()).multiply(m.add((pk).getX().multiply(r)));

    BigInteger s = k.mod(pk.getQ());

    return new DSASignature(r, s);
  }
}

  throw new IOException("Padding in DSA PRIVATE KEY DER stream.");
return new DSAPrivateKey(p, q, g, y, x);