Paper 2021/298
On extensions of the one-time-pad
Bhupendra Singh, G. Athithan, and Rajesh Pillai
Abstract
The one-time-pad (OTP) is a classical yet the strongest cipher. Although the OTP offers perfect secrecy and is quantum-safe, it has cryptographic as well as operational weaknesses. Cryptographically its encryption is malleable. Operationally a key used more than once by mistake can lead to successful breaking of the OTP. Hence, there is a need for extensions of OTP to address these two weaknesses simultaneously keeping all the strength of OTP intact. To address this need, we propose two extensions of OTP. In the process we also prove a relation between block ciphers and Latin rectangles.
Note: NIL
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Latin squareMalleable encryptionOne-time-padPrefect secrecyQuantum- safe
- Contact author(s)
-
bhupendra @ cair drdo in
ga drdochair @ cair drdo in
rpillai @ sag drdo in - History
- 2021-03-09: received
- Short URL
- https://ia.cr/2021/298
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/298,
author = {Bhupendra Singh and G. Athithan and Rajesh Pillai},
title = {On extensions of the one-time-pad},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/298},
year = {2021},
url = {https://eprint.iacr.org/2021/298}
}
