CryptoKit API Reference

Complete API reference for Apple CryptoKit: hashing, HMAC, symmetric encryption, key agreement, digital signatures, post-quantum cryptography, HPKE, Secure Enclave, key derivation, and Swift Crypto cross-platform parity.

Quick Reference

import CryptoKit

// Generate a symmetric key
let key = SymmetricKey(size: .bits256)

// AES-GCM encrypt
let sealed = try AES.GCM.seal(plaintext, using: key)
let combined = sealed.combined!  // nonce + ciphertext + tag

// AES-GCM decrypt
let sealedBox = try AES.GCM.SealedBox(combined: combined)
let decrypted = try AES.GCM.open(sealedBox, using: key)