Thales MU command Vs M6 command

Apr 26, 2013 at 5:27 PM
Hi there
I am having issue generating right MAC for one my implementation. The client is using MU command at their side to generate MAC. Could any one help with the specific algorithm MU is using to generate mac using DOUBLE length Key. I have tried generating MAC using M6 but am getting a different value. I am working with the Thalesim. Meanwhile SINGLE Length key works fine. I have check out the documentation to see of I could simulate it

http://en.wikipedia.org/wiki/ISO/IEC_9797-1

see my sample data below

KEY(CLEAR): FD6DBC0BFDAEFBB63B1568385D764CE9
DATA:130425110896157713042511082906300323000000380506800
MAC:028417B0



Regards