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

Class org.bouncycastle.crypto.signers.ECDSASigner

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

org.bouncycastle.crypto.signers.ECDSASigner.verifySignature()
return true if the value r and s represent a DSA signature for the passed in message (for standard DSA the message should be a SHA-1 hash of the real message to be verified).

            ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
                curve.decodePoint(Hex.decode("0262b12d60690cdcf330babab6e69763b471f994dd702d16a5")), // Q
                params);


            ecdsa.init(false, pubKey);
            if ( ecdsa.verifySignature(message, sig[0], sig[1]) )
            {
                return new SimpleTestResult(true, getName() + ": Okay");
            }
            else
            {

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            ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
                curve.decodePoint(Hex.decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
                params);


            ecdsa.init(false, pubKey);
            if ( ecdsa.verifySignature(message, sig[0], sig[1]) )
            {
                return new SimpleTestResult(true, getName() + ": Okay");
            }
            else
            {

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


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


            if (ecdsa.verifySignature(message, sig[0], sig[1]))
            {
                return new SimpleTestResult(true, getName() + ": Okay");
            }
            else
            {

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      signer.init (false, new ECPublicKeyParameters (curve.getCurve ().decodePoint (pub), domain));


      DLSequence seq = (DLSequence) asn1.readObject ();
      BigInteger r = ((ASN1Integer) seq.getObjectAt (0)).getPositiveValue ();
      BigInteger s = ((ASN1Integer) seq.getObjectAt (1)).getPositiveValue ();
      return signer.verifySignature (hash, r, s);
    }
    catch ( Exception e )
    {
      // threat format errors as invalid signatures
      return false;

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