Cisco SPA2102-AU Provisioning Guide - Page 20
SPA Configuration and Provisioning Certificate Chain, authentication purposes.
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Using HTTPS Chapter 1 Provisioning Linksys VoIP Devices Figure 1-2 SPA Configuration and Provisioning Certificate Chain SPA Configuration-Provisioning Certificate Chain Sipura Technology, Inc Provisioning Server Root Authority 1 CERT PKEY Compiled into SPA Firmware Signs Provisioning Server Certificates SPA Root CA Certificate List SPA Firmware Load SPA PKEY CERT Authenticates Server in HTTPS Connection Authenticates Client in HTTPS Connection Provisioning Server CERT PKEY VoIP Service Provider Provisioning Server Entity HTTPS Server Configuration Files Root CA Certificate List Signs SPA Client Certificates Stored on Service Provider's Provisioning Server PKEY CERT Sipura Technology, Inc Client Certificate Root Authority 1 As indicated in the lower half of the diagram, a Linksys Client Certificate Root Authority signs each unique certificate. The corresponding root certificate is made available to service providers for client authentication purposes. 1-10 Linksys SPA Provisioning Guide Version 3.0