org.bouncycastle.jcajce.provider.ProvEdDSAPrivateKey Maven / Gradle / Ivy

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The FIPS 140-3 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-3 level 1. This jar contains JCE provider and low-level API for the BC-FJA version 2.0.0, FIPS Certificate #4743. Please see certificate for certified platform details.

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package org.bouncycastle.jcajce.provider;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.security.PrivateKey;

import javax.security.auth.Destroyable;

import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.crypto.asymmetric.AsymmetricEdDSAPrivateKey;
import org.bouncycastle.crypto.asymmetric.AsymmetricEdDSAPublicKey;
import org.bouncycastle.jcajce.interfaces.EdDSAKey;
import org.bouncycastle.util.Arrays;

class ProvEdDSAPrivateKey
    implements Destroyable, EdDSAKey, PrivateKey
{
    static final long serialVersionUID = 1L;

    private transient AsymmetricEdDSAPrivateKey baseKey;

    ProvEdDSAPrivateKey(AsymmetricEdDSAPrivateKey privKey)
    {
        this.baseKey = privKey;
    }

    ProvEdDSAPrivateKey(PrivateKeyInfo keyInfo)
        throws IOException
    {
        baseKey = new AsymmetricEdDSAPrivateKey(keyInfo);
    }

    public String getAlgorithm()
    {
        return getBaseKey().getAlgorithm().getName();
    }

    public String getFormat()
    {
        KeyUtil.checkDestroyed(this);
        
        return "PKCS#8";
    }

    public byte[] getPublicData()
    {
        return getBaseKey().getPublicData();
    }

    public byte[] getEncoded()
    {
        return getBaseKey().getEncoded();
    }

    public void destroy()
    {
        baseKey.destroy();
    }

    public boolean isDestroyed()
    {
        return baseKey.isDestroyed();
    }

    public AsymmetricEdDSAPrivateKey getBaseKey()
    {
        KeyUtil.checkDestroyed(this);
        
        return baseKey;
    }
    
    public String toString()
    {
        if (isDestroyed())
        {
             return KeyUtil.destroyedPrivateKeyToString("EdDSA");
        }

        AsymmetricEdDSAPublicKey pubKey = new AsymmetricEdDSAPublicKey(baseKey.getAlgorithm(), baseKey.getPublicData());

        return KeyUtil.keyToString("Private Key", getAlgorithm(), pubKey);
    }

    public boolean equals(Object o)
    {
        if (o == this)
        {
            return true;
        }

        if (!(o instanceof ProvEdDSAPrivateKey))
        {
            return false;
        }

        ProvEdDSAPrivateKey other = (ProvEdDSAPrivateKey)o;

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

    public int hashCode()
    {
        return baseKey.hashCode();
    }

    private void readObject(
        ObjectInputStream in)
        throws IOException, ClassNotFoundException
    {
        in.defaultReadObject();

        byte[] enc = (byte[])in.readObject();

        baseKey = new AsymmetricEdDSAPrivateKey(enc);
    }

    private void writeObject(
        ObjectOutputStream out)
        throws IOException
    {
        if (isDestroyed())
        {
            throw new IOException("key has been destroyed");
        }

        out.defaultWriteObject();

        out.writeObject(this.getEncoded());
    }
}