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About Validity Checks of Augmented PAKE in IEEE 1363.2 and ISO/IEC 11770-4

SeongHan SHIN, Kazukuni KOBARA

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Summary :

An augmented PAKE (Password-Authenticated Key Exchange) protocol provides password-only authentication in the presence of an attacker, establishment of session keys between the involving parties, and extra protection for server compromise (i.e., exposure of password verification data). Among many augmented PAKE protocols, AMP variants (AMP2 [16] and AMP+ [15]) have been standardized in IEEE 1363.2 [9] and ISO/IEC 11770-4 [10]. In this paper, we thoroughly investigate APKAS-AMP (based on AMP2 [16]) and KAM3 (based on AMP+ [15]) which require several validity checks on the values, received and computed by the parties, when using a secure prime. After showing some attacks on APKAS-AMP and KAM3, we suggest new sanity checks that are clear and sufficient to prevent an attacker from doing these attacks.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E97-A No.1 pp.413-417
Publication Date
2014/01/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E97.A.413
Type of Manuscript
LETTER
Category
Cryptography and Information Security

Authors

SeongHan SHIN
  National Institute of Advanced Industrial Science and Technology (AIST)
Kazukuni KOBARA
  National Institute of Advanced Industrial Science and Technology (AIST)

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