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("ECDSA", "BC");


        s.initVerify(vKey);


        s.update(data);


        if (!s.verify(sigBytes))
        {
            fail("ECDSA verification failed");
        }

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        byte[]           data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
        Signature        s = Signature.getInstance("ECDSA", "BC");


        s.initSign(sKey);


        s.update(data);


        byte[] sigBytes = s.sign();


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

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


        s.initVerify(vKey);


        s.update(data);


        if (!s.verify(sigBytes))
        {
            fail("ECDSA verification failed");
        }

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        sgr.initSign(pair.getPrivate(), k);


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


        sgr.update(message);


        byte[] sigBytes = sgr.sign();


        sgr.initVerify(pair.getPublic());

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        byte[] sigBytes = sgr.sign();


        sgr.initVerify(pair.getPublic());


        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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        DERBitString    bitSig = null;


        try
        {
            sig.update(tbsResp.getEncoded(ASN1Encoding.DER));


            bitSig = new DERBitString(sig.sign());
        }
        catch (Exception e)
        {

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        sig.initVerify(pubKey);


        try
        {
            sig.update(reqInfo.getEncoded(ASN1Encoding.DER));
        }
        catch (Exception e)
        {
            throw new SignatureException("exception encoding TBS cert request - " + e);
        }

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            ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
            ASN1OutputStream        aOut = new ASN1OutputStream(bOut);


            aOut.writeObject(req.getTbsRequest());


            signature.update(bOut.toByteArray());


            return signature.verify(this.getSignature());
        }
        catch (NoSuchProviderException e)
        {

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    }


    try {
      Signature signature = Signature.getInstance("SHA256withECDSA");
      signature.initVerify(logInfo.getKey());
      signature.update(toVerify);
      return signature.verify(sct.getSignature().getSignature().toByteArray());
    } catch (SignatureException e) {
      throw new CertificateTransparencyException("Signature object not properly initialized or"
          + " signature from SCT is improperly encoded.", e);
    } catch (InvalidKeyException e) {

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