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23 December 2008

A sends:

This one is the original Clipper chip found in the AT&T TSD-3600c. The state machine description is sufficient to operate the chip, and also leads to an interesting hardware exploit avoiding transmission of the LEAF.

Mykotronx VLSI Encryption/Decryption Device Data, 1993

(A was the prototype, T was for Telephone) (19pp, 922KB)

Mykotronx VLSI Encryption/Decryption Processor, 1993

This one is for the 78E, which was for peripheral cards, having either a 16 or a 32 bit interface. (31pp, 2.7MB)