Triple DES Cipher Block Chaining with Output Feedback Masking (1996)
| Citations: | 12 - 0 self |
BibTeX
@MISC{Coppersmith96tripledes,
author = {D. Coppersmith and D. B. Johnson and S. M. Matyas and T. J. Watson and Don B. Johnson and Stephen M. Matyas},
title = {Triple DES Cipher Block Chaining with Output Feedback Masking},
year = {1996}
}
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Abstract
We propose a new mode of multiple encryption, namely "Triple DES cipher block chaining with output feedback masking." The aim is to provide strong protection against certain attacks ("dictionary attacks" and "matching ciphertext attacks") which exploit the DES blocksize of 64 bits. The new mode obtains this protection through the introduction of secret masking values that are Exclusive-ORed with the intermediate outputs of each triple-DES encryption operation. The secret mask value is derived from a fourth encryption operation per message block, in addition to the three used in previous modes. The new mode is part of a suite of encryption modes proposed in the ANSI X9.F.1 Triple-DES draft standard (X9.52). 1 Introduction Much effort has gone into attempted cryptanalysis of multiple DES [2, 3, 4, 6, 8, 10, 11, 14, 17, 18, 21]. Because the DES is still a fundamentally sound base to build on, the American National Standards Institute (ANSI) committee X9.F.1 is working to standardize a ...
