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Paper 2016/075
Weaknesses in Hadamard Based Symmetric Key Encryption Schemes
Gajraj Kuldeep and Devendra Kumar Yadav and A. K. Sharma
Abstract
In this paper security aspects of the existing symmetric key encryption schemes based on Hadamard matrices are examined. Hadamard matrices itself have symmetries like one circulant core or two circulant core. Here, we are exploiting the inherent symmetries of Hadamard matrices and are able to perform attacks on these encryption schemes. It is found that entire key can be obtained by observing the ciphertext.
Metadata
- Available format(s)
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Contact author(s)
- gajrajkuldeep @ gmail com
- History
- 2016-01-28: received
- Short URL
- https://ia.cr/2016/075
- License
-
CC BY