Paper 2008/356

Using Commutative Encryption to Share a Secret

Saied Hosseini Khayat

Abstract

It is shown how to use commutative encryption to share a secret. Suppose Alice wants to share a secret with Bob such that Bob cannot decrypt the secret unless a group of trustees agree. It is assumed that Alice, Bob and the trustees communicate over insecure channels. This paper presents a scheme that uses modular exponentiation and does not require key exchange. The security of the scheme rest of the difficulty of the discrete logarithm problem.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Not published elsewhere yet
Keywords
secret sharingcommutative cryptography
Contact author(s)
shk @ alum wustl edu
History
2008-08-18: received
Short URL
https://ia.cr/2008/356
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2008/356,
      author = {Saied Hosseini Khayat},
      title = {Using Commutative Encryption to Share a Secret},
      howpublished = {Cryptology ePrint Archive, Paper 2008/356},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/356}},
      url = {https://eprint.iacr.org/2008/356}
}
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