### Double shielded Public Key Cryptosystems

Xiaofeng Wang, Chen Xu, Guo Li, Hanling Lin, and Weijian Wang

##### Abstract

By introducing extra shields on Shpilrain and Ushakov's Ko-Lee-like protocol based on the decomposition problem of group elements we propose two new key exchange schemes and then a number of public key cryptographic protocols. We show that these protocols are free of known attacks. Particularly,if the entities taking part in our protocols create their private keys composed by the generators of the Mihailova subgroups of Bn, we show that the safety of our protocols are very highly guarantied by the insolvability of subgroup membership problem of the Mihailova subgroups.

Available format(s)
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
public key protocolbraid groupsubgroup membership problemquantum computational attack
Contact author(s)
wangxf @ szu edu cn
History
Short URL
https://ia.cr/2014/558

CC BY

BibTeX

@misc{cryptoeprint:2014/558,
author = {Xiaofeng Wang and Chen Xu and Guo Li and Hanling Lin and Weijian Wang},
title = {Double shielded Public Key Cryptosystems},
howpublished = {Cryptology ePrint Archive, Paper 2014/558},
year = {2014},
note = {\url{https://eprint.iacr.org/2014/558}},
url = {https://eprint.iacr.org/2014/558}
}

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