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A program to generate random reciprocal bigram tables
...The program prompts for a password or passphrase and a message to encrypt/ decrypt. After the message is entered the ciphertext is displayed.
Executing the program with command-line arguments causes bigram to generate a random bigram table to print to screen or save to disk depending on whether the -f filename argument was given. If the -p passphrase argument is given a specific table is generated and is repeatable each time the same passphrase is given.
This program was written to supplement the Enigma Simulator by Dirk Rijmenants.
http://users.telenet.be/d.rijmenants/en/enigmasim.htm
Enigma message procedures:
http://users.telenet.be/d.rijmenants/en/enigmaproc.htm