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This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

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package org.bouncycastle.math.field;

import org.bouncycastle.util.Arrays;

class GF2Polynomial implements Polynomial
{
    protected final int[] exponents;

    GF2Polynomial(int[] exponents)
    {
        this.exponents = Arrays.clone(exponents);
    }

    public int getDegree()
    {
        return exponents[exponents.length - 1];
    }

    public int[] getExponentsPresent()
    {
        return Arrays.clone(exponents);
    }

    public boolean equals(Object obj)
    {
        if (this == obj)
        {
            return true;
        }
        if (!(obj instanceof GF2Polynomial))
        {
            return false;
        }
        GF2Polynomial other = (GF2Polynomial)obj;
        return Arrays.areEqual(exponents, other.exponents);
    }

    public int hashCode()
    {
        return Arrays.hashCode(exponents);
    }
}