From e14d6a0489ee290d289cf276fa3ff94044191af7 Mon Sep 17 00:00:00 2001
From: René Korthaus <r.korthaus@sirrix.com>
Date: Wed, 13 Apr 2016 19:07:33 +0200
Subject: Add ECKCDSA signature algorithm

---
 src/lib/pk_pad/emsa.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/lib/pk_pad/emsa.cpp')

diff --git a/src/lib/pk_pad/emsa.cpp b/src/lib/pk_pad/emsa.cpp
index 3b8641357..91bf44cf8 100644
--- a/src/lib/pk_pad/emsa.cpp
+++ b/src/lib/pk_pad/emsa.cpp
@@ -45,6 +45,19 @@ EMSA* get_emsa(const std::string& algo_spec)
    throw Algorithm_Not_Found(algo_spec);
    }
 
+std::string hash_for_emsa(const std::string& algo_spec)
+   {
+   SCAN_Name emsa_name(algo_spec);
+
+   if(emsa_name.arg_count() > 0)
+      {
+      const std::string pos_hash = emsa_name.arg(0);
+      return pos_hash;
+      }
+
+   return "SHA-512"; // safe default if nothing we understand
+   }
+
 #define BOTAN_REGISTER_EMSA_NAMED_NOARGS(type, name) \
    BOTAN_REGISTER_NAMED_T(EMSA, name, type, make_new_T<type>)
 
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