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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.general;

import org.bouncycastle.crypto.AsymmetricPrivateKey;
import org.bouncycastle.crypto.AsymmetricPublicKey;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import org.bouncycastle.crypto.InvalidSignatureException;
import org.bouncycastle.crypto.OutputSignerUsingSecureRandom;
import org.bouncycastle.crypto.OutputValidator;
import org.bouncycastle.crypto.OutputVerifier;
import org.bouncycastle.crypto.Parameters;
import org.bouncycastle.crypto.SignatureOperatorFactory;
import org.bouncycastle.crypto.fips.FipsStatus;
import org.bouncycastle.crypto.fips.FipsUnapprovedOperationError;

abstract class GuardedSignatureOperatorUsingSecureRandomFactory
    implements SignatureOperatorFactory
{
    // package protect constructor
    GuardedSignatureOperatorUsingSecureRandomFactory()
    {
        FipsStatus.isReady();
        if (CryptoServicesRegistrar.isInApprovedOnlyMode())
        {
            throw new FipsUnapprovedOperationError("Attempt to create unapproved factory in approved only mode");
        }
    }

    public final OutputSignerUsingSecureRandom createSigner(AsymmetricPrivateKey key, T parameters)
    {
        if (CryptoServicesRegistrar.isInApprovedOnlyMode())
        {
            throw new FipsUnapprovedOperationError("Attempt to create unapproved algorithm in approved only mode", parameters.getAlgorithm());
        }

        return doCreateSigner(key, parameters);
    }

    public final OutputVerifier createVerifier(AsymmetricPublicKey key, T parameters)
    {
        if (CryptoServicesRegistrar.isInApprovedOnlyMode())
        {
            throw new FipsUnapprovedOperationError("Attempt to create unapproved algorithm in approved only mode", parameters.getAlgorithm());
        }

        return doCreateVerifier(key, parameters);
    }

    public final OutputValidator createValidator(AsymmetricPublicKey key, T parameters, byte[] signature)
        throws InvalidSignatureException
    {
        if (CryptoServicesRegistrar.isInApprovedOnlyMode())
        {
            throw new FipsUnapprovedOperationError("Attempt to create unapproved algorithm in approved only mode", parameters.getAlgorithm());
        }

        return doCreateValidator(key, parameters, signature);
    }

    protected abstract OutputSignerUsingSecureRandom doCreateSigner(AsymmetricPrivateKey key, T parameter);

    protected abstract OutputVerifier doCreateVerifier(AsymmetricPublicKey key, T parameter);

    protected abstract OutputValidator doCreateValidator(AsymmetricPublicKey key, T parameter, byte[] signature)
        throws InvalidSignatureException;
}