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.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.crypto.params;

public class RC2Parameters
    extends KeyParameter
{
    private int     bits;

    public RC2Parameters(
        byte[]  key)
    {
        this(key, (key.length > 128) ? 1024 : (key.length * 8));
    }

    public RC2Parameters(
        byte[]  key,
        int     bits)
    {
        super(key);
        this.bits = bits;
    }

    public int getEffectiveKeyBits()
    {
        return bits;
    }
}