http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
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package org.bouncycastle.crypto.macs;

import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.CipherParameters;


A non-NIST variant which allows passing of an IV to the underlying CBC cipher.

Note: there isn't really a good reason to use an IV here, use the regular CMac where possible.


/**
 * A non-NIST variant which allows passing of an IV to the underlying CBC cipher.
 * <p>Note: there isn't really a good reason to use an IV here, use the regular CMac where possible.</p>
 */
public class CMacWithIV
    extends CMac
{
    public CMacWithIV(BlockCipher cipher)
    {
        super(cipher);
    }

    public CMacWithIV(BlockCipher cipher, int macSizeInBits)
    {
        super(cipher, macSizeInBits);
    }

    void validate(CipherParameters params)
    {
        // accept all
    }
}