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Paper 2015/306
Analysis of VAES3 (FF2)
Morris Dworkin and Ray Perlner
Abstract
The National Institute of Standards and Technology (NIST) specified three methods for format-preserving encryption (FPE) in Draft NIST Special Publication (SP) 800-38G, which was released for public comment in July, 2013. Each method was a mode of operation of the Advanced Encryption Standard (AES). One of the three modes, VAES3, was specified under the name FF2 in the NIST draft. This note describes a theoretical chosen-plaintext attack that shows the security strength of FF2 is less than 128 bits.
Metadata
- Available format(s)
- Category
- Secret-key cryptography
- Publication info
- Preprint.
- Keywords
- AESformat-preserving encryption
- Contact author(s)
- dworkin @ nist gov
- History
- 2015-04-06: received
- Short URL
- https://ia.cr/2015/306
- License
-
CC BY