if ( !this.mechContext.isMICAvailable() ) {
            return null;
        }

        ASN1ObjectIdentifier[] lm = this.mechs;
        byte[] ml = encodeMechs(lm);
        byte[] mechanismListMIC = this.mechContext.calculateMIC(ml);
        if ( log.isDebugEnabled() ) {
            log.debug("Out Mech list " + Arrays.toString(lm));