Paper 2006/062
A New Mode of Encryption Secure Against Symmetric Nonce Respecting Adversaries
Debrup Chakraborty and Palash Sarkar
Abstract
We present MEM, which is a new mode of encryption using a block cipher. MEM is proved to be a strong pseudo-random permutation (SPRP) against {\em symmetric} nonce respecting adversaries, where a symmetric nonce respecting adversary is one which does not repeat nonces to either the encryption or the decryption oracle. Against such adversaries, MEM provides a secure, length preserving, tagless mode of encryption. In our construction, the number of block cipher calls is approximately half that of the earlier known more general constructions CMC, EME and EME
Metadata
- Available format(s)
- -- withdrawn --
- Category
- Secret-key cryptography
- Publication info
- Published elsewhere. Extended version of the FSE'06 paper
- Keywords
- mode of operationnonce based encryptionstrong pseudo-random permutation.
- Contact author(s)
- palash @ isical ac in
- History
- 2006-07-30: withdrawn
- 2006-02-23: received
- See all versions
- Short URL
- https://ia.cr/2006/062
- License
-
CC BY