Rel-17 Security 2G Advanced

TS 55.226 – GSM/GPRS Security Algorithms A5/4 and GEA4

Defines 128-bit encryption algorithms A5/4 for GSM/ECSD and GEA4 for GPRS based on KASUMI cipher, enhancing security over previous 64-bit versions.

Release
Rel-17
Category
Security
Subcategory
Authentication and Encryption
Network Layer
Security
Technology
2G
Business Impact
High

Key Technologies

GSMGPRSECSD

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