17 Dec
2003
17 Dec
'03
11:17 p.m.
We've transcribed from PDF to ASCII the cryptanalysis program in Appendix F of the US Army's Field Manual FM 34-40-2, Basic Cryptanalysis, September, 1990. http://jya.com/appf.htm Manual quote: "This program gives the capability to encipher and decipher messages in monoalphabetic and polyalphabetic substitution systems, produce a variety of statistical data about the encrypted messages, and print the results or save them to disk. Because of its limited purpose, the program does not support on-screen analysis. The printed results can be used off-line to aid in analysis, however. The program should be particularly useful in preparing examples and exercises for training cryptanalytic techniques."