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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. 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.

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package org.bouncycastle.operator;

import org.bouncycastle.asn1.x509.AlgorithmIdentifier;

/**
 * A Content Signer which also provides details of the digest algorithm used internally.
 */
public interface ExtendedContentSigner
    extends ContentSigner
{
    /**
     * Return the algorithm identifier describing the digest algorithm used by
     * this signature algorithm and parameters this signer generates.
     *
     * @return algorithm oid and parameters, null if unknown.
     */
    AlgorithmIdentifier getDigestAlgorithmIdentifier();
}