The American M-209 cipher machine (chris-intel-corner.blogspot.com) 2 points by pbrowne011 1y ago ↗ HN
[–] pbrowne011 1y ago ↗ There are several other good resources on the M-209.Short cryptanalysis of M-209: http://www.jfbouch.fr/crypto/m209/cryptanalysis.htmlSeries on how to use the machine: https://www.nf6x.net/2013/03/practical-use-of-the-m-209-ciph...Paper by James Reeds, Robert Morris and Dennis Ritchie analyzing its security from 1978: https://cryptome.org/2015/12/ReedsTheHagelinCipherBellLabs19...Apparently the paper by Morris and Ritchie was not supposed to be published; it was instead a technical note. See Ritchie's account: https://www.bell-labs.com/usr/dmr/www/crypt.html
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[ 4.3 ms ] story [ 15.7 ms ] threadShort cryptanalysis of M-209: http://www.jfbouch.fr/crypto/m209/cryptanalysis.html
Series on how to use the machine: https://www.nf6x.net/2013/03/practical-use-of-the-m-209-ciph...
Paper by James Reeds, Robert Morris and Dennis Ritchie analyzing its security from 1978: https://cryptome.org/2015/12/ReedsTheHagelinCipherBellLabs19...
Apparently the paper by Morris and Ritchie was not supposed to be published; it was instead a technical note. See Ritchie's account: https://www.bell-labs.com/usr/dmr/www/crypt.html