Package java.security

Examples of java.security.Signature.update()

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            }

            try {
                Signature s = Signature.getInstance(algorithm);
                s.initVerify(chain[0]);
                s.update(message);
                return s.verify(signature);
            } catch (Exception ex) {
                LogRecord lr = new LogRecord(Level.WARNING, "Error while verifing message of user {0}");
                lr.setParameters(new Object[]{username});
                lr.setThrown(ex);
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        byte[] sampleMessage = new byte[1000 + random.nextInt(100)];
        random.nextBytes(sampleMessage);

        Signature normalSig = Signature.getInstance(sigName, "BC");
        normalSig.initSign(privKey);
        normalSig.update(sampleMessage);
        byte[] normalResult = normalSig.sign();

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

        Signature rawSig = Signature.getInstance("RSA", "BC");
        rawSig.initSign(privKey);
        rawSig.update(digInfo);
        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(digInfo);

        if (!rawSig.verify(rawResult))
        {
            fail("raw mode signature verification failed");
        }
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        PublicKey   pubKey = fact.generatePublic(pubKeySpec);

        Signature s = Signature.getInstance("SHA1withRSA/PSS", "BC");

        s.initSign(privKey, new FixedRandom(slt1a));
        s.update(msg1a);
        byte[] sig = s.sign();

        if (!arrayEquals(sig1a, sig))
        {
           fail("PSS Sign test expected " + new String(Hex.encode(sig1a)) + " got " + new String(Hex.encode(sig)));
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        }

        s = Signature.getInstance("SHA1withRSAandMGF1", "BC");
       
        s.initVerify(pubKey);
        s.update(msg1a);
        if (!s.verify(sig1a))
        {
            fail("SHA1 signature verification failed");
        }
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        s = Signature.getInstance("SHA1withRSAandMGF1", "BC");
       
        s.setParameter(PSSParameterSpec.DEFAULT);
       
        s.initVerify(pubKey);
        s.update(msg1a);
        if (!s.verify(sig1a))
        {
            fail("SHA1 signature verification with default parameters failed");
        }
       
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        }
       
        s = Signature.getInstance("SHA256withRSA/PSS", "BC");

        s.initSign(privKey, new FixedRandom(slt1a));
        s.update(msg1a);
        sig = s.sign();

        pss = s.getParameters();
       
        if (!arrayEquals(sig1b, sig))
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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("ECGOST3410 verification failed");
        }
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