From e121555f82fec2c7209658e51d22aadcfa60767c Mon Sep 17 00:00:00 2001
From: Davide De Rosa <keeshux@gmail.com>
Date: Tue, 4 Sep 2018 15:48:57 +0200
Subject: [PATCH] Add Cipher.embedsDigest to signal digest embedding

Currently GCM ciphers do.
---
 TunnelKit/Sources/Core/SessionProxy+Configuration.swift | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/TunnelKit/Sources/Core/SessionProxy+Configuration.swift b/TunnelKit/Sources/Core/SessionProxy+Configuration.swift
index 0a0d0bf..d647a8a 100644
--- a/TunnelKit/Sources/Core/SessionProxy+Configuration.swift
+++ b/TunnelKit/Sources/Core/SessionProxy+Configuration.swift
@@ -55,6 +55,11 @@ extension SessionProxy {
         
         /// AES encryption with 256-bit key size and GCM.
         case aes256gcm = "AES-256-GCM"
+        
+        /// Digest should be ignored when this is `true`.
+        public var embedsDigest: Bool {
+            return rawValue.hasSuffix("-GCM")
+        }
     }
     
     /// The available message digest algorithms.