Examples of java.security.Signature.initSign()

java.security.Signature.initSign()
Initialize this object for signing. If this method is called again with a different argument, it negates the effect of this call. @param privateKey the private key of the identity whose signatureis going to be generated. @exception InvalidKeyException if the key is invalid.

        {
            sig.initSign(key, random);
        }
        else
        {
            sig.initSign(key);
        }


        sig.update(object.toASN1Primitive().getEncoded(ASN1Encoding.DER));


        return sig.sign();

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        sig = X509Util.getSignatureInstance(sigName, provider);


        if (random != null)
        {
            sig.initSign(key, random);
        }
        else
        {
            sig.initSign(key);
        }

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        {
            sig.initSign(key, random);
        }
        else
        {
            sig.initSign(key);
        }


        sig.update(object.toASN1Primitive().getEncoded(ASN1Encoding.DER));


        return sig.sign();

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        Signature sgr = Signature.getInstance("ECDSA", "BC");
        KeyPair   pair = g.generateKeyPair();
        PrivateKey sKey = pair.getPrivate();
        PublicKey vKey = pair.getPublic();


        sgr.initSign(sKey);


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


        sgr.update(message);

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        Signature sgr = Signature.getInstance("ECGOST3410", "BC");
        KeyPair   pair = g.generateKeyPair();
        PrivateKey sKey = pair.getPrivate();
        PublicKey vKey = pair.getPublic();


        sgr.initSign(sKey);


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


        sgr.update(message);

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        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");
        PrivateKey  sKey = f.generatePrivate(priKeySpec);
        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();

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        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");
        PrivateKey  sKey = f.generatePrivate(priKeySpec);
        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();

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        KeyPair p = g.generateKeyPair();


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


        s.initSign(sKey);


        s.update(data);


        byte[]  sigBytes = s.sign();

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        p = g.generateKeyPair();


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


        s.initSign(sKey);


        s.update(data);


        sigBytes = s.sign();

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        p = g.generateKeyPair();


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


        s.initSign(sKey);


        s.update(data);


        sigBytes = s.sign();

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