Dynamic SHA

Xu Zijie

Paper 2007/476

Dynamic SHA

Xu Zijie

Abstract

In this paper I describe the construction of Dynamic SHA family of cryptographic hash functions. They are built with design components from the SHA-2 family, but there is function R in the new hash functionh. It enabled us to achieve a novel design principle: When message is changed, different rotate right operation maybe done. It make the system can resistant against all extant attacks.

Note: I found D-sha is weak, if it is constituted with three same and easy backward part. I had found it at 2007/08. I revise it now. It is luck that d-sha2 is not like this, it just not so good as it can without constants.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. Unknown where it was published
Keywords: hash function SHA Dynamic SHA
Contact author(s): xuzijiewz @ gmail com
History: 2008-11-20: last of 13 revisions; 2007-12-21: received; See all versions
Short URL: https://ia.cr/2007/476
License: CC BY

BibTeX

@misc{cryptoeprint:2007/476,
      author = {Xu Zijie},
      title = {Dynamic {SHA}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2007/476},
      year = {2007},
      url = {https://eprint.iacr.org/2007/476}
}