Examples of java.security.Signature.update()

java.security.Signature.update()
Updates the data to be signed or verified by a byte. @param b the byte to use for the update. @exception SignatureException if this signature object is not initialized properly.

        s = Signature.getInstance("SHA512withRSAandMGF1", "BC");
        
        s.setParameter(pss.getParameterSpec(PSSParameterSpec.class));
        
        s.initVerify(pubKey);
        s.update(msg1a);
        if (!s.verify(sig1c))
        {
            fail("SHA512 signature verification failed");
        }

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        int saltLen = spec.getSaltLength();
        byte[] fixedRandomBytes = new byte[saltLen];
        random.nextBytes(fixedRandomBytes);


        normalSig.initSign(privKey, new FixedSecureRandom(fixedRandomBytes));
        normalSig.update(sampleMessage);
        byte[] normalResult = normalSig.sign();


        MessageDigest digest = MessageDigest.getInstance(digestOID.getId(), "BC");
        byte[] hash = digest.digest(sampleMessage);

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        // Need to init the params explicitly to avoid having a 'raw' variety of every PSS algorithm
        rawSig.setParameter(spec);


        rawSig.initSign(privKey, new FixedSecureRandom(fixedRandomBytes));
        rawSig.update(hash);
        byte[] rawResult = rawSig.sign();


        if (!Arrays.areEqual(normalResult, rawResult))
        {
            fail("raw mode signature differs from normal one");

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        {
            fail("raw mode signature differs from normal one");
        }


        rawSig.initVerify(pubKey);
        rawSig.update(hash);


        if (!rawSig.verify(rawResult))
        {
            fail("raw mode signature verification failed");
        }

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        byte[] sigBytes = sgr.sign();


        sgr.initVerify(vKey);


        sgr.update(message);


        if (!sgr.verify(sigBytes))
        {
            fail("DSTU4145 verification failed");
        }

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        sgr.initSign(sKey, k);


        byte[] message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };


        sgr.update(message);


        byte[]  sigBytes = sgr.sign();


        sgr.initVerify(vKey);

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        byte[]  sigBytes = sgr.sign();


        sgr.initVerify(vKey);


        sgr.update(message);


        if (!sgr.verify(sigBytes))
        {
            fail("239 Bit EC verification failed");
        }

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        PublicKey   vKey = f.generatePublic(pubKeySpec);
        byte[]      message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };
       
        sgr.initSign(sKey, k);


        sgr.update(message);
        
        byte[]  sigBytes = sgr.sign();


        sgr.initVerify(vKey);

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        byte[]  sigBytes = sgr.sign();


        sgr.initVerify(vKey);


        sgr.update(message);


        if (!sgr.verify(sigBytes))
        {
            fail("239 Bit EC verification failed");
        }

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        PrivateKey sKey = p.getPrivate();
        PublicKey  vKey = p.getPublic();


        s.initSign(sKey);


        s.update(data);


        byte[] sigBytes = s.sign();


        s = Signature.getInstance("ECDSA", "BC");

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