Paper 2003/162 Original: eprint.iacr.org/2003/162 ↗
Cryptanalysis of the Alleged SecurID Hash Function
Abstract
The SecurID hash function is used for authenticating users to a corporate computer infrastructure. We analyse an alleged implementation of this hash function. The block cipher at the heart of the function can be broken in few milliseconds on a PC with 70 adaptively chosen plaintexts. The 64-bit secret key of 10$\%$ of the cards can be discovered given two months of token outputs and $2^{48}$ analysis steps. A larger fraction of cards can be covered given more observation time.
Metadata
- Available format(s)
PDF- Category
- Secret-key cryptography
- Publication info
- Preprint.
- History
- 2003-10-29: last updated
- 2003-08-11: published
- Short URL
- https://ia.cr/2003/162
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2003/162,
author = {Alex Biryukov and Joseph Lano and Bart Preneel},
title = {Cryptanalysis of the Alleged SecurID Hash Function},
howpublished = {Cryptology {ePrint} Archive, Paper 2003/162},
year = {2003},
url = {https://eprint.iacr.org/2003/162}
}