IBM had three channel-attached crypto units for the mainframes. 1977 – IBM 3845 DES encryption unit
1979 – IBM 3848 DES encryption unit - faster than the 3845, and added Triple-DES (yes, IBM already had Triple-DES in its products in 1979!) 1989 – IBM Transaction Security System (TSS) which included the 4753. The 4753 was the first product to offer the CCA architecture, and it is the ancestor of all of the other crypto processors such as the Crypto Express cards. Todd Arnold ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
