org.bouncycastle.tls.crypto.TlsSRP6Client Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for the TLS, including a JSSE provider. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.

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package org.bouncycastle.tls.crypto;

import java.io.IOException;
import java.math.BigInteger;

/**
 * Basic interface for an SRP-6 client implementation.
 */
public interface TlsSRP6Client
{
    /**
     * Generates the secret S given the server's credentials
     * @param serverB The server's credentials
     * @return Client's verification message for the server
     * @throws IOException If server's credentials are invalid
     */
    BigInteger calculateSecret(BigInteger serverB)
        throws IOException;

    /**
     * Generates client's credentials given the client's salt, identity and password
     * @param salt The salt used in the client's verifier.
     * @param identity The user's identity (eg. username)
     * @param password The user's password
     * @return Client's public value to send to server
     */
    BigInteger generateClientCredentials(byte[] salt, byte[] identity, byte[] password);
}