Examples of java.security.Signature.sign()

java.security.Signature.sign()
Returns the signature bytes of all the data updated. The format of the signature depends on the underlying signature scheme.
A call to this method resets this signature object to the state it was in when previously initialized for signing via a call to initSign(PrivateKey). That is, the object is reset and available to generate another signature from the same signer, if desired, via new calls to update and sign. @return the signature bytes of the signing operation's result. @exception SignatureException if this signature object is notinitialized properly or if this signature algorithm is unable to process the input data provided.


        s.initSign(sKey);


        s.update(data);


        byte[] sigBytes = s.sign();


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


        s.initVerify(vKey);

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        sig.initSign(signingKey);


        sig.update(data);


        sigBytes = sig.sign();


        sig.initVerify(verifyKey);


        sig.update(data);

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        sig.initSign(signingKey);


        sig.update(data);


        sigBytes = sig.sign();


        sig.initVerify(verifyKey);


        sig.update(data);

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        sig.initSign(signingKey);


        sig.update(data);


        sigBytes = sig.sign();


        sig.initVerify(verifyKey);


        sig.update(data);

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        sig.initSign(signingKey);


        sig.update(data);


        sigBytes = sig.sign();


        sig.initVerify(verifyKey);


        sig.update(data);

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        sig.initSign(signingKey);


        sig.update(data);


        sigBytes = sig.sign();


        sig.initVerify(verifyKey);


        sig.update(data);

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        sig.initSign(privKey);


        sig.update(data);


        sigBytes = sig.sign();


        if (!Arrays.areEqual(testSig, sigBytes))
        {
            fail("SigTest: failed ISO9796-2 generation Test");
        }

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


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


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

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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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            s.setParameter(new PSSParameterSpec("SHA-512", "MGF1", new MGF1ParameterSpec("SHA-512"), 0, 1));
            s.initSign(privKey);


            s.update(msg1a);
            sig = s.sign();


            pss = s.getParameters();
            
            if (!arrayEquals(sig1c, sig))
            {

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