Examples of javax.crypto.Mac.doFinal()

javax.crypto.Mac.doFinal()
Computes the digest of this MAC based on the data previously specified in {@link #update} calls.
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. @return the generated digest. @throws IllegalStateException if this MAC is not initialized.

        //
        mac.init(key);


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


        out = mac.doFinal();


        if (!areEqual(out, output1))
        {
            fail("Failed - expected " + new String(Hex.encode(output1)) + " got " + new String(Hex.encode(out)));
        }

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        //
        mac.init(key, new IvParameterSpec(ivBytes));


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


        out = mac.doFinal();


        if (!areEqual(out, output2))
        {
            fail("Failed - expected " + new String(Hex.encode(output2)) + " got " + new String(Hex.encode(out)));
        }

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        mac.init(key, new IvParameterSpec(ivBytes));


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


        out = mac.doFinal();


        if (!areEqual(out, output3))
        {
            fail("Failed - expected " + new String(Hex.encode(output3)) + " got " + new String(Hex.encode(out)));
        }

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        mac.init(key);


        mac.update(inputISO9797, 0, inputISO9797.length);


        out = mac.doFinal();


        if (!areEqual(out, outputISO9797))
        {
            fail("Failed - expected " + new String(Hex.encode(outputISO9797)) + " got " + new String(Hex.encode(out)));
        }

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        mac.init(key);


        mac.update(inputDesEDE64, 0, inputDesEDE64.length);


        out = mac.doFinal();


        if (!areEqual(out, outputDesEDE64))
        {
            fail("Failed - expected " + new String(Hex.encode(outputDesEDE64)) + " got " + new String(Hex.encode(out)));
        }

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


        out = mac.doFinal();


        if (!Arrays.areEqual(out, output))
        {
            fail("Failed - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(out)));
        }

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        mac.reset();


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


        out = mac.doFinal();


        if (!Arrays.areEqual(out, output))
        {
            fail("Failed - expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(out)));
        }

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            Mac mac = Mac.getInstance(name);


            mac.init(new SecretKeySpec(new byte[mac.getMacLength()], mac.getAlgorithm()), new IvParameterSpec(
                new byte[16]));
            mac.update(new byte[128]);
            byte[] bytes = mac.doFinal();


            if (!Arrays.areEqual(bytes, Hex.decode(macOutput)))
            {
                fail("wrong mac value computed for " + name);
            }

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            final Mac mac = Mac.getInstance(SIGNATURE_ALGORITHM);
            mac.init(signingKey);


            // BASE64Encoder isn't technically a public class, but it
            // has been consistently available in Java releases to date
            auth = Base64.encodeBytes(mac.doFinal(buf.toString().getBytes()));
        }
        catch(Exception e) {
            throw new IllegalArgumentException("Unable to calculate digest", e);
        }

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            SecretKey sk = new SecretKeySpec( key, "AES" );


            Mac mac = Mac.getInstance( "HmacSHA1" );
            mac.init( sk );


            return mac.doFinal( data );
        }
        catch ( GeneralSecurityException nsae )
        {
            nsae.printStackTrace();
            return null;

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