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Apple CryptoKit — SecureEnclave

Last modified: 2026-10-23

URL: https://developer.apple.com/documentation/cryptokit/secureenclave

Summary

Apple developer documentation for the CryptoKit SecureEnclave API, which lets iOS/macOS apps create and use P-256 signing and key-agreement keys whose private parts never leave the Secure Enclave. This is the API wallet apps use for hardware-backed holder binding on iPhones, constraining which signature schemes a ZKP-based holder-binding proof must support.