SoK: Secure Messaging Nik Unger, Sergej Dechand, Joseph Bonneau, Sascha Fahl, Henning Perl, Ian Goldberg, Matthew Smith, 36th IEEE Symposium on Security and Privacy, May 2015. Extended version available as CACR Tech Report 2015-02.
Architectural Considerations for Cryptanalytic Hardware Ian Goldberg, David Wagner, Chapter 10 of "Cracking DES: Secrets of Encryption Research, Wiretap Politics & Chip Design", July 1998.