From df64fb318acbfee7911bee4fd021100f1d6532ed Mon Sep 17 00:00:00 2001
From: Jack Lloyd <lloyd@randombit.net>
Date: Mon, 17 Oct 2016 06:05:37 -0400
Subject: Remove alias logic from SCAN_Name

This required taking a global lock and doing a map lookup each
time an algorithm was requested (and so many times during a TLS
handshake).
---
 src/lib/modes/aead/aead.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/lib/modes/aead/aead.cpp')

diff --git a/src/lib/modes/aead/aead.cpp b/src/lib/modes/aead/aead.cpp
index 033dad94e..1b7b78be7 100644
--- a/src/lib/modes/aead/aead.cpp
+++ b/src/lib/modes/aead/aead.cpp
@@ -76,6 +76,12 @@ AEAD_Mode* get_aead(const std::string& algo, Cipher_Dir dir)
 #if defined(BOTAN_HAS_BLOCK_CIPHER)
 
    SCAN_Name req(algo);
+
+   if(req.arg_count() == 0)
+      {
+      return nullptr;
+      }
+
    std::unique_ptr<BlockCipher> bc(BlockCipher::create(req.arg(0)));
 
    if(!bc)
-- 
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