Paper 2013/768
VMPC-R Cryptographically Secure Pseudo-Random Number Generator Alternative to RC4
Bartosz Zoltak
Abstract
We present a new Cryptographically Secure Pseudo-Random Number Generator. It uses permutations as its internal state, similarly to the RC4 stream cipher. We describe a statistical test which revealed non-random patterns in a sample of $2^{16.6}$ outputs of a 3-bit RC4. Our new algorithm produced $2^{46.8}$ undistinguishable from random 3-bit outputs in the same test. We probed $2^{51}$ outputs of the algorithm in different statistical tests with different word sizes and found no way of distinguishing the keystream from a random source. The size of the algorithm's internal state is $2^{3424}$ (for an 8-bit implementation). The algorithm is cryptographically secure to the extent we were able to analyse it. Its design is simple and easy to implement. We present the generator along with a key scheduling algorithm processing both keys and initialization vectors.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- PRNGCSPRNGRC4stream cipherdistinguishing attackbias
- Contact author(s)
- bzoltak @ vmpcfunction com
- History
- 2019-01-16: revised
- 2013-11-25: received
- See all versions
- Short URL
- https://ia.cr/2013/768
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2013/768,
author = {Bartosz Zoltak},
title = {VMPC-R Cryptographically Secure Pseudo-Random Number Generator Alternative to RC4},
howpublished = {Cryptology ePrint Archive, Paper 2013/768},
year = {2013},
note = {\url{https://eprint.iacr.org/2013/768}},
url = {https://eprint.iacr.org/2013/768}
}
