[cryptography] Complete repository of known playing card ciphers
I've since put together a site of playing card ciphers, weak and strong. It's still _very_ much a work in progress, but some input would be appreciated: http://aarontoponce.org/card-ciphers/ Everything is typed up, except for Mirdek and Untitled. Currently, I'm not including DECK, as it's not secure by modern demands, but thinking maybe I'll create an insecure list (Mirdek might be under this insecure list, actually). I still have a great amount of work to do, such as styling the page, adding videos detailing the algorithms, and computer software implementations of each of the ciphers. I'm sure there are typos and grammar errors galore. I'll address those also, including reading flow. I probably have some facts on a few of the implementations wrong also, that need to be cleaned up. After the computer software implementations are created, I'll be doing more cryptanalysis on the ciphertexts, getting more hard concrete numbers on biases, patterns, distributions, etc. Regardless, it's making good progress, and I would be interested on feedback, if any, from the general crypto community. I hope this has some value, at least. :) I put this together, as I am interested in field ciphers that can be executed by hand, and other than the one-time pad, and card ciphers, I am not aware of any hand ciphers that are still considered secure. Thanks, -- . o . o . o . . o o . . . o . . . o . o o o . o . o o . . o o o o . o . . o o o o . o o o pgpHqYugxqzLH.pgp Description: PGP signature ___ cryptography mailing list cryptography@randombit.net http://lists.randombit.net/mailman/listinfo/cryptography
Re: [cryptography] Complete repository of known playing card ciphers
Den 10 sep 2014 22:34 skrev Aaron Toponce aaron.topo...@gmail.com: I've since put together a site of playing card ciphers, weak and strong. It's still _very_ much a work in progress, but some input would be appreciated: http://aarontoponce.org/card-ciphers/ [...] I still have a great amount of work to do, such as styling the page, adding videos detailing the algorithms, and computer software implementations of each of the ciphers. I'm sure there are typos and grammar errors galore. I'll address those also, including reading flow. I probably have some facts on a few of the implementations wrong also, that need to be cleaned up. After the computer software implementations are created, I'll be doing more cryptanalysis on the ciphertexts, getting more hard concrete numbers on biases, patterns, distributions, etc. Will you attempt to model human shuffling too and see how it affects analysis? Is there maybe any existing work on that too reuse? I'd like to know what the minimum requirement would be for a human to achieve a secure shuffle for these ciphers (in case any of these ciphers would actually be secure enough given a proper shuffle). ___ cryptography mailing list cryptography@randombit.net http://lists.randombit.net/mailman/listinfo/cryptography
Re: [cryptography] Complete repository of known playing card ciphers
On Wed, Sep 10, 2014 at 10:50:27PM +0200, Natanael wrote: Will you attempt to model human shuffling too and see how it affects analysis? Is there maybe any existing work on that too reuse? I'd like to know what the minimum requirement would be for a human to achieve a secure shuffle for these ciphers (in case any of these ciphers would actually be secure enough given a proper shuffle). On the index, I link to a PDF written by Brad Mann from Harvard that studies the Riffle Shuffle, which includes the birthday paradox and Markov chains. I could certainly create a page that summarized the highlights in that PDF, and what it takes to introduce sufficient unpredictability into a standard deck using the Riffle Shuffle. I think there are other pages that could be created, minimizing the amount of content that needs to be digested on each page. -- . o . o . o . . o o . . . o . . . o . o o o . o . o o . . o o o o . o . . o o o o . o o o pgpUvtJYSddsJ.pgp Description: PGP signature ___ cryptography mailing list cryptography@randombit.net http://lists.randombit.net/mailman/listinfo/cryptography
Re: [cryptography] Complete repository of known playing card ciphers
Natanael writes: Will you attempt to model human shuffling too and see how it affects analysis? Is there maybe any existing work on that too reuse? I'd like to know what the minimum requirement would be for a human to achieve a secure shuffle for these ciphers (in case any of these ciphers would actually be secure enough given a proper shuffle). The most famous is probably Bayer and Diaconis (1992): http://statweb.stanford.edu/~cgates/PERSI/papers/bayer92.pdf A classic NYT report on this research (prior to its formal publication): http://www.nytimes.com/1990/01/09/science/in-shuffling-cards-7-is-winning-number.html -- Seth David Schoen sch...@loyalty.org | No haiku patents http://www.loyalty.org/~schoen/| means I've no incentive to FD9A6AA28193A9F03D4BF4ADC11B36DC9C7DD150 |-- Don Marti ___ cryptography mailing list cryptography@randombit.net http://lists.randombit.net/mailman/listinfo/cryptography
