Implement cryptographic primitives in Swift using CryptoKit types and APIs.
npx skills add https://github.com/FelixRauch/medat-figuren --skill cryptokit-felixrauch
Please help me install this Agent Skill. Skill: cryptokit Source: https://github.com/FelixRauch/medat-figuren/tree/main/.agents/skills/cryptokit Command: npx skills add https://github.com/FelixRauch/medat-figuren --skill cryptokit-felixrauch
This Skill helps you implement modern, secure cryptographic operations in Swift without error-prone low-level APIs, so you can hash, authenticate, encrypt, and sign data reliably.
Use the cryptokit skill to create a SHA256 digest and verify it against an expected value for integrity checking of incoming data.
High-intent search queries and answers about installing and using this skill.
To compute a SHA256 hash in Swift, use CryptoKit to generate one-shot or incremental digests. This provides deterministic fingerprints and verifies incoming data against expected values for reliable integrity checks without low-level APIs.
Authenticated encryption with AES-GCM in Swift uses CryptoKit to encrypt and decrypt data while supporting additional authenticated data. This ensures confidentiality and integrity together, preventing tampering during transmission or storage.
Yes, CryptoKit allows you to back keys with the Secure Enclave for stronger protection. This controls access using biometric or passcode policies, ensuring secure key handling for iOS app scenarios requiring strict confidentiality.
ECDH key agreement in Swift uses CryptoKit to establish a shared secret between parties, then HKDF derives symmetric keys from it. This enables secure protocol data exchange and on-device authentication without exposing raw private keys.
Yes, CryptoKit supports HMAC generation and verification using constant-time validation. This prevents timing attacks when authenticating user or protocol data, ensuring safe validation checks across iOS app scenarios.
Use ChaChaPoly for authenticated encryption in Swift when you need an alternative to AES-GCM. CryptoKit applies both to iOS app scenarios requiring confidentiality and integrity, with correct nonce handling ensuring safe data encryption.
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