DocumentCode :
2555951
Title :
Message Authentication with Manipulation Detection Code
Author :
Jueneman, R.R. ; Matyas, S.M. ; Meyer, C.H.
Author_Institution :
Computer Sciences Corp.
fYear :
1983
fDate :
25-27 April 1983
Firstpage :
33
Lastpage :
33
Abstract :
In many applications of cryptography, assuring the authenticity of communications is as important as protecting their secrecy. A well known and secure method of providing message authentication is to compute a Message Authentication Code (MAC) by encrypting the message. If only one key is used to both encrypt and authenticate a message, however, the system is subject to several forms of cryptographic attack. Techniques have also been sought for combining secrecy and authentication in only one encryption pass, using a Manipulation Detection Code generated by noncryptographic means. Previous investigations have shown that a proposed MDC technique involving block-by-block Exclusive-ORing is not secure when used with the Cipher Block Chaining (CBC) mode of operation of the Data Encryption Standard (DES]. It is shown here that the Cipher Feedback (CFEI) mode of operation exhibits similar weaknesses. A linear addition modulo 264 MDC is analyzed, including discussion of several novel attack scenarios. A Quadratic Congruential Manipulation Detection Code is proposed to avoid the problems of previous schemes.
Keywords :
Accidents; Authentication; Digital signatures; Encryption; Message authentication; Receivers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Security and Privacy, 1983 IEEE Symposium on
Conference_Location :
Oakland, CA, USA
ISSN :
1540-7993
Print_ISBN :
0-8186-0467-0
Type :
conf
DOI :
10.1109/SP.1983.10005
Filename :
6234493
Link To Document :
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