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Enigma M4 cipher machine emulator - aenig4

aenig4 emulates the Enigma M4 cipher machine used by the U-Boot division of the German Navy during World War II. It can be used as well to emulate the Enigma I machine (M1, M2, M3).

See the Crypto Museum for more info about the machine.

aenig4 is free software. Read the license.

Old versions:

For bug reports or suggestions, write me at . Bug reports are much appreciated.