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This document extends the GlobalPlatform Card Specification with a secure channel and key establishment protocol, altogether known as the Opacity Secure Channel or Secure Channel Protocol '22'. The Opacity Secure Channel establishment method includes multiple modes:

- Opacity ZKM and Opacity FS as defined in [ANSI 504-1]
- Opacity Blinded Mode as defined in this specification

Based on a request from EMVCo, the specification now also includes Chinese cryptographic algorithms where the normative references are available in Chinese only.

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