Examples of javax.crypto.Mac.reset()

javax.crypto.Mac.reset()
Resets this {@code Mac} instance to its initial state.
This {@code Mac} instance is reverted to its initial state and can beused to start the next MAC computation with the same parameters or initialized with different parameters.


        mac = Mac.getInstance(hmacName, "BC");


        mac.init(key);


        mac.reset();


        mac.update(message, 0, message.length);


        out = mac.doFinal();

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        {
            fail("Failed - exception " + e.toString(), e);
            return;
        }


        mac.reset();
        
        mac.update(message, 0, message.length);


        out = mac.doFinal();

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        {
            fail("Failed - exception " + e.toString(), e);
            return;
        }


        mac.reset();


        mac.update(message, 0, message.length);


        out = mac.doFinal();

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        mac = Mac.getInstance(hmacName, "BC");


        mac.init(key);


        mac.reset();


        mac.update(message, 0, message.length);


        out = mac.doFinal();

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        {
            fail("Failed - exception " + e.toString(), e);
            return;
        }


        mac.reset();
        
        mac.update(message, 0, message.length);


        out = mac.doFinal();

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        String macOid = macAlg.getObjectId().getId();
        byte[] protectedBytes = ret.getProtectedBytes();
        Mac mac = Mac.getInstance(macOid, "BC");
        SecretKey key = new SecretKeySpec(basekey, macOid);
        mac.init(key);
        mac.reset();
        mac.update(protectedBytes, 0, protectedBytes.length);
        byte[] out = mac.doFinal();
        DERBitString bs = new DERBitString(out);


        // Finally store the protection bytes in the msg

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            // HMAC/SHA1 os normal 1.3.6.1.5.5.8.1.2 or 1.2.840.113549.2.7
            String macOid = macAlg.getObjectId().getId();
            Mac mac = Mac.getInstance(macOid, "BC");
            SecretKey key = new SecretKeySpec(basekey, macOid);
            mac.init(key);
            mac.reset();
            mac.update(protectedBytes, 0, protectedBytes.length);
            byte[] out = mac.doFinal();
            // My out should now be the same as the protection bits
            byte[] pb = protection.getBytes();
            boolean ret = Arrays.equals(out, pb);

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                final String macOid = macAlg.getObjectId().getId();
                final byte[] protectedBytes = ret.getProtectedBytes();
                final Mac mac = Mac.getInstance(macOid, this.bcProvider);
                final SecretKey key = new SecretKeySpec(basekey, macOid);
                mac.init(key);
                mac.reset();
                mac.update(protectedBytes, 0, protectedBytes.length);
                final byte[] out = mac.doFinal();
                final DERBitString bs = new DERBitString(out);


                // Finally store the protection bytes in the msg

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                    }
                    key = new SecretKeySpec(basekey, macOid);
                }
                final Mac mac = Mac.getInstance(macOid, this.bcProvider);
                mac.init(key);
                mac.reset();
                final byte[] protectedBytes = respObject.getProtectedBytes();
                final DERBitString protection = respObject.getProtection();
                mac.update(protectedBytes, 0, protectedBytes.length);
                byte[] out = mac.doFinal();
                // My out should now be the same as the protection bits

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      }
      // HMAC/SHA1 is normal 1.3.6.1.5.5.8.1.2 or 1.2.840.113549.2.7 
      Mac mac = Mac.getInstance(macOid, "BC");
      SecretKey key = new SecretKeySpec(basekey, macOid);
      mac.init(key);
      mac.reset();
      mac.update(protectedBytes, 0, protectedBytes.length);
      byte[] out = mac.doFinal();
      // My out should now be the same as the protection bits
      byte[] pb = protection.getBytes();
      ret = Arrays.equals(out, pb);

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