CryptoKit

Authenticated encryption, digital signatures, key agreement, Secure Enclave key management, and quantum-secure cryptography for iOS apps.

When to Use This Skill

Use when you need to:

• ☑ Encrypt data at rest or in transit beyond what TLS/Data Protection provides
• ☑ Sign payloads for integrity verification (receipts, tokens, API requests)
• ☑ Generate or manage cryptographic keys (including Secure Enclave hardware keys)
• ☑ Migrate from CommonCrypto C API to CryptoKit
• ☑ Implement key agreement (ECDH) for end-to-end encryption
• ☑ Use HPKE for modern asymmetric encryption
• ☑ Adopt quantum-secure algorithms (ML-KEM, ML-DSA) for post-quantum readiness
• ☑ Interoperate with server-side Swift Crypto or non-Apple platforms

Example Prompts