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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 org.bouncycastle.tls.DigitallySigned;

/**
 * Base interface for a TLS verifier that works with signatures and either raw message digests, or
 * entire messages.
 */
public interface TlsVerifier
{
    TlsStreamVerifier getStreamVerifier(DigitallySigned signature) throws IOException;

    /**
     * Return true if the passed in signature and hash represent a real signature.
     *
     * @param signature the signature object containing the signature to be verified.
     * @param hash the hash calculated for the signature.
     * @return true if signature verifies, false otherwise.
     * @throws IOException in case of an exception verifying signature.
     */
    boolean verifyRawSignature(DigitallySigned signature, byte[] hash) throws IOException;
}