---
title: HPKE.AEAD.AES_GCM_256
framework: cryptokit
role: symbol
role_heading: Case
path: cryptokit/hpke/aead/aes_gcm_256
---

# HPKE.AEAD.AES_GCM_256

An Advanced Encryption Standard cipher in Galois/Counter Mode with a key length of 256 bits.

## Declaration

```swift
case AES_GCM_256
```