Well, within a minute or two I have the answer to the N/MC MARS encryption method. Oh lordy, I forgot to sign the super secret handshake before I posted this. Tin foil hat in hand see CHNAVMARCORMARS message below dated 10-4-2012:
DE NNN0ASA 068
R 041200Z OCT 2012
FM NNN0ASA VA
TO NNN0ALL
BT
UNCLAS
SUBJ: CHNAVMARCORMARS INFO BCST 40-12
1. KL-7 SIMULATOR: SEVERAL AGENCIES HAVE ASKED FOR SOME MEANS OF
PROTECTING SENSITIVE DATA WHEN TRANSMITTED OVER THE AIR. NNN0ASG SIX
HAS FOUND A 1950'S ERA ENCRYPTION DEVICE SIMULATOR PROGRAM, THE KL-7
SIMULATOR, THAT PRODUCES FIVE-LETTER CODED GROUPS WITH THE EQUIVALENT
OF 151-BIT KEY ENCRYPTION. OBVIOUSLY, THIS PROGRAM CANNOT BE USED TO
SEND CLASSIFIED MATERIAL SINCE IT IS NOT APPROVED BY THE NATIONAL
SECURITY AGENCY, BUT IT CAN PROVIDE A MEANS OF HIDING DATA FROM ALL
BUT THE MOST SERIOUS HACKERS. THE PROGRAM LINK AND A SERIES OF SIX
TRAINING LECTURES HAS BEEN POSTED ON A YAHOO GROUPS WEBSITE:
HTTP://GROUPS.YAHOO.COM/GROUP/MARS_ENCRYPTION/
MEMBERSHIP TO THIS WEBSITE IS CURRENTLY LIMITED TO VALIDATED NAVY-
MARINE CORPS MARS MEMBERS. CHECK IT OUT. WE OLD-TIMERS WILL
APPRECIATE THE SIMULATOR PROGRAM'S SOUNDS THAT EMULATE THE ORIGINAL
MACHINE. ALL THAT IS NEEDED IS THE SMELL OF OIL AND OZONE.