org.bouncycastle.pqc.crypto.mldsa.MLDSAPublicKeyParameters Maven / Gradle / Ivy

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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 1.4.

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package org.bouncycastle.pqc.crypto.mldsa;

import org.bouncycastle.util.Arrays;

public class MLDSAPublicKeyParameters
    extends MLDSAKeyParameters
{
    static byte[] getEncoded(byte[] rho, byte[] t1)
    {
        return Arrays.concatenate(rho, t1);
    }

    final byte[] rho;
    final byte[] t1;

    public MLDSAPublicKeyParameters(MLDSAParameters params, byte[] encoding)
    {
        super(false, params);
        this.rho = Arrays.copyOfRange(encoding, 0, MLDSAEngine.SeedBytes);
        this.t1 = Arrays.copyOfRange(encoding, MLDSAEngine.SeedBytes, encoding.length);
        if (t1.length == 0)
        {
            throw new IllegalArgumentException("encoding too short");
        }
    }

    public MLDSAPublicKeyParameters(MLDSAParameters params, byte[] rho, byte[] t1)
    {
        super(false, params);
        if (rho == null)
        {
            throw new NullPointerException("rho cannot be null");
        }
        if (t1 == null)
        {
            throw new NullPointerException("t1 cannot be null");
        }
        this.rho = Arrays.clone(rho);
        this.t1 = Arrays.clone(t1);
    }

    public byte[] getEncoded()
    {
        return getEncoded(rho, t1);
    }

    public byte[] getRho()
    {
        return Arrays.clone(rho);
    }

    public byte[] getT1()
    {
        return Arrays.clone(t1);
    }
}