<!--
{
  "availability" : [
    "macOS: 15.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AuthenticationServices",
  "identifier" : "/documentation/AuthenticationServices/ASAuthorizationProviderExtensionEncryptionAlgorithm/ecdhe_A256GCM",
  "metadataVersion" : "0.1.0",
  "role" : "Type Property",
  "symbol" : {
    "kind" : "Type Property",
    "modules" : [
      "Authentication Services",
      "AuthenticationServices"
    ],
    "preciseIdentifier" : "c:@ASAuthorizationProviderExtensionEncryptionAlgorithmECDHE_A256GCM"
  },
  "title" : "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.

```
static let ecdhe_A256GCM: ASAuthorizationProviderExtensionEncryptionAlgorithm
```

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)