From aba9b9899f38849f6ac6ad668c72083efd92e4c9 Mon Sep 17 00:00:00 2001
From: Sylvain Corlay <sylvain.corlay@gmail.com>
Date: Thu, 5 Sep 2019 00:31:00 +0200
Subject: [PATCH] Do not use MDC2

---
 CMakeLists.txt          | 2 +-
 src/xauthentication.cpp | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb91263d..a331df66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,7 +49,7 @@ message(STATUS "xeus binary version: v${XEUS_BINARY_VERSION}")
 set(nlohmann_json_REQUIRED_VERSION 3.2.0)
 set(xtl_REQUIRED_VERSION 0.5)
 set(cppzmq_REQUIRED_VERSION 4.3.0)
-set(zeromq_REQUIRED_VERSION 4.2.3)
+set(zeromq_REQUIRED_VERSION 4.2.5)
 
 find_package(nlohmann_json ${nlohmann_json_REQUIRED_VERSION} REQUIRED)
 find_package(xtl ${xtl_REQUIRED_VERSION} REQUIRED)
diff --git a/src/xauthentication.cpp b/src/xauthentication.cpp
index 8039fa93..ff95141e 100644
--- a/src/xauthentication.cpp
+++ b/src/xauthentication.cpp
@@ -108,7 +108,8 @@ namespace xeus
         static const std::map<std::string, const EVP_MD*(*)()> schemes = {
             {"hmac-md5", EVP_md5},
             {"hmac-sha1", EVP_sha1},
-            {"hmac-mdc2", EVP_mdc2},
+            // MDC2 is disabled by default unless enable-mdc2 is specified
+            // {"hmac-mdc2", EVP_mdc2},
             {"hmac-ripemd160", EVP_ripemd160},
 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
             {"hmac-blake2b512", EVP_blake2b512},