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BS ISO/IEC 11770-7:2021

BS ISO/IEC 11770-7:2021

$167.15

Information security. Key management – Cross-domain password-based authenticated key exchange

Published By Publication Date Number of Pages
BSI 2021 36
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This document specifies mechanisms for cross-domain password-based authenticated key exchange, all of which are four-party password-based authenticated key exchange (4PAKE) protocols. Such protocols let two communicating entities establish a shared session key using just the login passwords that they share with their respective domain authentication servers. The authentication servers, assumed to be part of a standard public key infrastructure (PKI), act as ephemeral certification authorities (CAs) that certify key materials that the users can subsequently use to exchange and agree on as a session key.

This document does not specify the means to be used to establish a shared password between an entity and its corresponding domain server. This document also does not define the implementation of a PKI and the means for two distinct domain servers to exchange or verify their respective public key certificates.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Symbols and abbreviated terms
4.1 Abbreviated terms
12 4.2 Symbols
14 5 Requirements
6 Mechanisms
6.1 General
15 6.2 Sub-protocols and functions
6.2.1 General
6.2.2 Two-party password-based authenticated key exchange
16 6.2.3 Two-party asymmetric-key authenticated key exchange
17 6.2.4 Two-party symmetric-key authenticated key exchange
18 6.2.5 Two-party non-interactive key exchange
6.2.6 Session identity function
19 6.3 Mechanism 1
6.3.1 General
6.3.2 Prior shared parameters
6.3.3 Key exchange operation
22 6.4 Mechanism 2
6.4.1 General
6.4.2 Prior shared parameters
23 6.4.3 Key exchange operation
25 6.5 Mechanism 3
6.5.1 General
26 6.5.2 Prior shared parameters
6.5.3 Key exchange operation
30 Annex A (normative) Object identifiers
31 Annex B (normative) Conversion functions
34 Bibliography

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BS ISO/IEC 11770-7:2021
$167.15