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The FIPS 140-2 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-2 level 1. This jar contains the debug version JCE provider and low-level API for the BC-FJA version 1.0.2.3, FIPS Certificate #3514. Please note the debug jar is not certified.

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package org.bouncycastle.crypto;

/**
 * Interface describing an operator factory for creating digest calculators.
 *
 * @param  the type for the parameters for the operator made by this factory.
 */
public interface DigestOperatorFactory
{
    /**
     * Return a calculator for a particular digest.
     *
     * @param parameter the parameters for this calculator.
     * @return a digest calculator that provides an OutputStream to enter data.
     */
    OutputDigestCalculator createOutputDigestCalculator(final T parameter);
}