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TechSpec
  • Foreword
  • Introduction
  • 1 Scope
  • 2 References
  • 3 Definitions, symbols and abbreviations
  • 4 Introductory information
  • 5 Confidentiality algorithm GEA5
  • 6 Integrity algorithm GIA5
  • A.1 The function EVAL_S
  • A.2 The function MUL(V, P, c)
  • B.1 Overview
  • B.2. Procedure Pre_Mul_P
  • B.3 Function Mul_P
  • D.1 GEA5
  • D.2 GIA5

B.2. Procedure Pre_Mul_P

3GPP55.251GEA5 and GIA5 algorithm specificationSpecification of the GEA5 and GIA5 encryption algorithms for General Packet Radio Service (GPRS)TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

This clause only available under licence.
See http://www.etsi.org/about/what-we-do/security-algorithms-and-codes/cellular-algorithm-licences.