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

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