connectbot/sshlib

package com.trilead.ssh2.signature;

import java.io.IOException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;

public interface SSHSignature {
    /** Returns the supported signature formats. */
    String getKeyFormat();

    /** Decode from SSH specification key to Java public key. */
    PublicKey decodePublicKey(byte[] encoded) throws IOException;

    /** Encode from Java public key to SSH specification. */
    byte[] encodePublicKey(PublicKey publicKey) throws IOException;

    /** Verifies a SSH-format signature for a given key. */
    boolean verifySignature(byte[] message, byte[] signature, PublicKey publicKey) throws IOException;

    /** Generate an SSH-format signature for the message and private key. */
    byte[] generateSignature(byte[] message, PrivateKey privateKey, SecureRandom secureRandom) throws IOException;
}