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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for the Android platform. Android unfortunately ships with a stripped-down version of Bouncy Castle, which prevents easy upgrades - Spongy Castle overcomes this and provides a full, up-to-date version of the Bouncy Castle cryptographic libs.

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package org.spongycastle.crypto.params;

import org.spongycastle.util.Arrays;

public class DSAValidationParameters
{
    private int usageIndex;
    private byte[]  seed;
    private int     counter;

    public DSAValidationParameters(
        byte[]  seed,
        int     counter)
    {
        this(seed, counter, -1);
    }

    public DSAValidationParameters(
        byte[]  seed,
        int     counter,
        int     usageIndex)
    {
        this.seed = seed;
        this.counter = counter;
        this.usageIndex = usageIndex;
    }

    public int getCounter()
    {
        return counter;
    }

    public byte[] getSeed()
    {
        return seed;
    }

    public int getUsageIndex()
    {
        return usageIndex;
    }

    public int hashCode()
    {
        return counter ^ Arrays.hashCode(seed);
    }
    
    public boolean equals(
        Object o)
    {
        if (!(o instanceof DSAValidationParameters))
        {
            return false;
        }

        DSAValidationParameters  other = (DSAValidationParameters)o;

        if (other.counter != this.counter)
        {
            return false;
        }

        return Arrays.areEqual(this.seed, other.seed);
    }
}