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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.4. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.tsp.ers;

import java.util.Comparator;

/**
 * Comparator for byte arrays for ERS hash sorting.
 */
class ByteArrayComparator
    implements Comparator
{
    public int compare(Object l, Object r)
    {
        byte[] left = (byte[])l;
        byte[] right = (byte[])r;
        for (int i = 0; i < left.length && i < right.length; i++)
        {
            int a = (left[i] & 0xff);
            int b = (right[i] & 0xff);

            if (a != b)
            {
                return a - b;
            }
        }
        return left.length - right.length;
    }
}