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ETSI TS 155 216
M00000067
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ETSI TS 155 216 Digital cellular telecommunications system (Phase 2+); Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 1: A5/3 and GEA3 specification (3GPP TS 55.216 version 4.0.0 Release 4)
standard by European Telecommunications Standards Institute, 01/01/2008
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