def METHOD_NAME(string, shared_secret, challenge_hmac):
    """
    Verify a challenging hmac signature against a string / shared-secret
    .. versionadded:: 2014.7.0
    Returns a boolean if the verification succeeded or failed.
    CLI Example:
    .. code-block:: bash
        salt '*' hashutil.hmac_signature 'get salted' 'shared secret' 'eBWf9bstXg+NiP5AOwppB5HMvZiYMPzEM9W5YMm/AmQ='
    """
    return salt.utils.hashutils.METHOD_NAME(string, shared_secret, challenge_hmac)