Applications of SKREM-like symmetric key ciphers

Mircea Digulescu

Paper 2021/496

Applications of SKREM-like symmetric key ciphers

Mircea Digulescu

Abstract

In a prior paper we introduced a new symmetric key encryption scheme called Short Key Random Encryption Machine (SKREM), for which we claimed excellent security guarantees. In this paper we present and briefly discuss some of its applications outside conventional data encryption. These are Secure Coin Flipping, Cryptographic Hashing, Zero-Leaked-Knowledge Authentication and Authorization and a Digital Signature scheme which can be employed on a block-chain. We also briefly recap SKREM-like ciphers and the assumptions on which their security are based. The above applications are novel because they do not involve public key cryptography. Furthermore, the security of SKREM-like ciphers is not based on hardness of some algebraic operations, thus not opening them up to specific quantum computing attacks.

Note: Licensed under CC BY-NC (creative commons attribution-noncommercial) license.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Preprint. MINOR revision.
Keywords: Symmetric Key Encryption Provable Security One Time Pad Zero Knowledge Cryptographic Commit Protocol Secure Coin Flipping Authentication Authorization Cryptographic Hash Digital Signature Chaos Machine
Contact author(s): mircea digulescu @ mail ru
History: 2021-04-19: received
Short URL: https://ia.cr/2021/496
License: CC BY-NC

BibTeX

@misc{cryptoeprint:2021/496,
      author = {Mircea Digulescu},
      title = {Applications of SKREM-like symmetric key ciphers},
      howpublished = {Cryptology ePrint Archive, Paper 2021/496},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/496}},
      url = {https://eprint.iacr.org/2021/496}
}