org.bouncycastle.crypto.params.Ed25519PublicKeyParameters Maven / Gradle / Ivy
package org.bouncycastle.crypto.params;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import org.bouncycastle.math.ec.rfc8032.Ed25519;
import org.bouncycastle.util.Arrays;
import org.bouncycastle.util.io.Streams;
public final class Ed25519PublicKeyParameters
extends AsymmetricKeyParameter
{
public static final int KEY_SIZE = Ed25519.PUBLIC_KEY_SIZE;
private final byte[] data = new byte[KEY_SIZE];
public Ed25519PublicKeyParameters(byte[] buf)
{
this(validate(buf), 0);
}
public Ed25519PublicKeyParameters(byte[] buf, int off)
{
super(false);
System.arraycopy(buf, off, data, 0, KEY_SIZE);
}
public Ed25519PublicKeyParameters(InputStream input) throws IOException
{
super(false);
if (KEY_SIZE != Streams.readFully(input, data))
{
throw new EOFException("EOF encountered in middle of Ed25519 public key");
}
}
public void encode(byte[] buf, int off)
{
System.arraycopy(data, 0, buf, off, KEY_SIZE);
}
public byte[] getEncoded()
{
return Arrays.clone(data);
}
private static byte[] validate(byte[] buf)
{
if (buf.length != KEY_SIZE)
{
throw new IllegalArgumentException("'buf' must have length " + KEY_SIZE);
}
return buf;
}
}