CAN/CSA-ISO/IEC-9798-2-95 (R1999)
The international community has decided to make this standard available only in
the English language version. It has been adopted as a National Standard of
Canada on this basis.
This National Standard of Canada is equivalent to International Standard
ISO/IEC 9798-2:1994.
1 Scope
This part of ISO/IEC 9798 specifies entity authentication mechanisms using
symmetric encipherment algorithms. Four of them deal with authentication
mechanisms between two entities where no trusted third party is involved; two
of these four are concerned with the authentication of a single entity
(unilateral authentication), while the other two are mechanisms for mutual
authentication of two entities. The remaining mechanisms require a trusted
third party for the establishment of a common secret key, and realize mutual or
unilateral entity authentication.
The mechanisms specified in this part of ISO/IEC 9798 use time variant
parameters such as time stamps, sequence numbers, or random numbers, to prevent
valid authentication information from being accepted at a later time.
If no trusted third party is involved and a time stamp or sequence number is
used, one pass is needed for unilateral authentication, while two passes are
needed to achieve mutual authentication. If no trusted third party is involved
and a challenge and response method employing random numbers is used, two
passes are needed for unilateral authentication, while three passes are
required to achieve mutual authentication. If a trusted third party is
involved, any additional communication between an entity and the trusted third
party requires two extra passes in the communication exchange.
OEN:
CSA
Langue:
English
Code(s) de l'ICS:
35.040
Statut:
Annulée
Date de Publication:
1995-12-30
Numéro Standard:
CAN/CSA-ISO/IEC-9798-2-95 (R1999)