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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;

/**
 * RFC 2246
 * 
 * Note that the values here are implementation-specific and arbitrary. It is recommended not to
 * depend on the particular values (e.g. serialization).
 */
public class MACAlgorithm
{
    public static final int _null = 0;
    public static final int md5 = 1;
    public static final int sha = 2;

    /*
     * RFC 5246
     */
    public static final int hmac_md5 = md5;
    public static final int hmac_sha1 = sha;
    public static final int hmac_sha256 = 3;
    public static final int hmac_sha384 = 4;
    public static final int hmac_sha512 = 5;

    public static String getName(int macAlgorithm)
    {
        switch (macAlgorithm)
        {
        case _null:
            return "null";
        case hmac_md5:
            return "hmac_md5";
        case hmac_sha1:
            return "hmac_sha1";
        case hmac_sha256:
            return "hmac_sha256";
        case hmac_sha384:
            return "hmac_sha384";
        case hmac_sha512:
            return "hmac_sha512";
        default:
            return "UNKNOWN";
        }
    }

    public static String getText(int macAlgorithm)
    {
        return getName(macAlgorithm) + "(" + macAlgorithm + ")";
    }

    public static boolean isHMAC(int macAlgorithm)
    {
        switch (macAlgorithm)
        {
        case hmac_md5:
        case hmac_sha1:
        case hmac_sha256:
        case hmac_sha384:
        case hmac_sha512:
            return true;
        default:
            return false;
        }
    }
}