Examples of org.bouncycastle.crypto.signers.ECDSASigner.generateSignature()

Class org.bouncycastle.crypto.signers.ECDSASigner

Examples of org.bouncycastle.crypto.signers.ECDSASigner.generateSignature()

org.bouncycastle.crypto.signers.ECDSASigner.generateSignature()
generate a signature for the given message using the key we were initialised with. For conventional DSA the message should be a SHA-1 hash of the message of interest. @param message the message that will be verified later.

            ECDSASigner ecdsa = new ECDSASigner();


            ecdsa.init(true, param);


            byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").toByteArray();
            BigInteger[] sig = ecdsa.generateSignature(message);


            if (!r.equals(sig[0]))
            {
                return new SimpleTestResult(false, getName()
                    + ": r component wrong." + System.getProperty("line.separator")

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            ParametersWithRandom param = new ParametersWithRandom(priKey, k);


            ecdsa.init(true, param);


            byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").toByteArray();
            BigInteger[] sig = ecdsa.generateSignature(message);


            if (!r.equals(sig[0]))
            {
                return new SimpleTestResult(false, getName()
                    + ": r component wrong." + System.getProperty("line.separator")

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            ECDSASigner ecdsa = new ECDSASigner();


            ecdsa.init(true, param);


            byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").toByteArray();
            BigInteger[] sig = ecdsa.generateSignature(message);


            ecdsa.init(false, pair.getPublic());


            if (ecdsa.verifySignature(message, sig[0], sig[1]))
            {

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      dos.write(Base64.decode(serverNonce));
      dos.write(clientNonce);
      dos.flush();
      dos.close();
      sha.doFinal(digest, 0);
      BigInteger[] signature = signer.generateSignature(digest);
      return Arrays.asList(bigIntegerToBase64(signature[0]), bigIntegerToBase64(signature[1]));
    } catch (IOException e) {
      throw new ExchangeException("Could not build signature for authentication");
    }
  }

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    {
      throw new ValidationException ("Need private key to sign");
    }
    ECDSASigner signer = new ECDSASigner (new HMacDSAKCalculator (new SHA256Digest ()));
    signer.init (true, new ECPrivateKeyParameters (priv, domain));
    BigInteger[] signature = signer.generateSignature (hash);
    ByteArrayOutputStream s = new ByteArrayOutputStream ();
    try
    {
      DERSequenceGenerator seq = new DERSequenceGenerator (s);
      seq.addObject (new ASN1Integer (signature[0]));

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