---
title: ecdhe_A256GCM
framework: authenticationservices
role: symbol
role_heading: Type Property
path: authenticationservices/asauthorizationproviderextensionencryptionalgorithm/ecdhe_a256gcm
---

# ecdhe_A256GCM

A encryption algorithm that uses NIST P-256 elliptic curve key agreement, ConcatKDF key derivation with a 256-bit digest, and the Advanced Encryption Standard cipher in Galois/Counter Mode with a key length of 256 bits.

## Declaration

```swift
static let ecdhe_A256GCM: ASAuthorizationProviderExtensionEncryptionAlgorithm
```