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The FIPS 140-3 Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms certified to FIPS 140-3 level 1. This jar contains JCE provider and low-level API for the BC-FJA version 2.0.0, FIPS Certificate #4743. Please see certificate for certified platform details.

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package org.bouncycastle.crypto.internal.io;

import org.bouncycastle.crypto.CryptoServicesRegistrar;
import org.bouncycastle.crypto.fips.FipsOperationError;
import org.bouncycastle.crypto.fips.FipsStatus;
import org.bouncycastle.crypto.fips.FipsUnapprovedOperationError;

class Utils
{
    static void approvedModeCheck(boolean approvedMode, String algorithmName)
    {
        if (approvedMode != CryptoServicesRegistrar.isInApprovedOnlyMode())
        {
            if (approvedMode)
            {
                throw new FipsUnapprovedOperationError("Attempt to use approved implementation in unapproved thread: " + algorithmName);
            }
            else
            {
                throw new FipsUnapprovedOperationError("Attempt to use unapproved implementation in approved thread: " + algorithmName);
            }
        }
        if (FipsStatus.isErrorStatus())
        {
            throw new FipsOperationError(FipsStatus.getStatusMessage());
        }
    }
}