1 files changed, 9 insertions, 4 deletions
diff --git a/Swiften/Crypto/OpenSSLCryptoProvider.cpp b/Swiften/Crypto/OpenSSLCryptoProvider.cpp
index b46cb2a..5245bd8 100644
--- a/Swiften/Crypto/OpenSSLCryptoProvider.cpp
+++ b/Swiften/Crypto/OpenSSLCryptoProvider.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017 Isode Limited.
+ * Copyright (c) 2013-2018 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
@@ -28,7 +28,7 @@ namespace {
                 }
             }
 
-            ~SHA1Hash() {
+            ~SHA1Hash() override {
             }
 
             virtual Hash& update(const ByteArray& data) override {
@@ -69,7 +69,7 @@ namespace {
                 }
             }
 
-            ~MD5Hash() {
+            ~MD5Hash() override {
             }
 
             virtual Hash& update(const ByteArray& data) override {
@@ -107,7 +107,12 @@ namespace {
     ByteArray getHMACSHA1Internal(const T& key, const ByteArray& data) {
         unsigned int len = SHA_DIGEST_LENGTH;
         std::vector<unsigned char> result(len);
-        HMAC(EVP_sha1(), vecptr(key), boost::numeric_cast<int>(key.size()), vecptr(data), data.size(), vecptr(result), &len);
+        try {
+            HMAC(EVP_sha1(), vecptr(key), boost::numeric_cast<int>(key.size()), vecptr(data), data.size(), vecptr(result), &len);
+        }
+        catch (const boost::numeric::bad_numeric_cast&) {
+            assert(false);
+        }
         return result;
     }
 }