GB/T 27929-2025 Active National standards

GB/T 27929-2025 Financial services—Requirements for message authentication using symmetric techniques

Publish Date: 2025-06-30 Implement Date: 2025-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 27929-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Finance, insurance

ICS Name: The application of information technology in banks

Publish Date: 2025-06-30

Implement Date: 2025-10-01

Pages: 20 pages

Scope

This document establishes a process for protecting the integrity of messages or stored data in financial services operations, as well as verifying messages from authorized sources, regardless of the transmission method used. It also provides a list of approved group cipher algorithms supporting message authentication code (MAC) calculation. The authentication methods defined in this document are applicable to data stored in encoded character sets or binary formats, as well as formatted and transmitted messages. This document applies to symmetric algorithms where both the sender and receiver use the same key. It does not specify a method for generating a shared key. The use of this document cannot prevent internal fraud between the sender and receiver, or MAC forgery by the receiver.