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Paper 2014/257
Handycipher: a Low-tech, Randomized, Symmetric-key Cryptosystem
Bruce Kallick
Abstract
Handycipher is a low-tech, randomized, symmetric-key, stream cipher, simple enough to permit pen-and-paper encrypting and decrypting of messages, while providing a significantly high level of security by using a nondeterministic encryption procedure, multiple encryption, and randomly generated session keys.
Note: A minor change was made in the encryption algorithm resulting in a substantial strengthening of the cipher system.
Metadata
- Available format(s)
- Category
- Secret-key cryptography
- Publication info
- Preprint.
- Keywords
- stream cipherssecret-key cryptographyrandomized homophonic substitutionhand ciphers
- Contact author(s)
- curmudgeon @ rudegnu com
- History
- 2016-02-04: last of 12 revisions
- 2014-04-20: received
- See all versions
- Short URL
- https://ia.cr/2014/257
- License
-
CC BY