diff --git a/include/fc/crypto/elliptic.hpp b/include/fc/crypto/elliptic.hpp
index 401c132..6730a19 100644
--- a/include/fc/crypto/elliptic.hpp
+++ b/include/fc/crypto/elliptic.hpp
@@ -99,6 +99,12 @@ namespace fc {
            bool              verify( const fc::sha256& digest, const signature& sig );
 
            public_key get_public_key()const;
+
+
+           inline friend bool operator==( const private_key& a, const private_key& b )
+           {
+            return a.get_secret() == b.get_secret();
+           }
         private:
            fc::fwd<detail::private_key_impl,8> my;
     };
diff --git a/src/crypto/aes.cpp b/src/crypto/aes.cpp
index 7459c93..72315f3 100644
--- a/src/crypto/aes.cpp
+++ b/src/crypto/aes.cpp
@@ -256,6 +256,7 @@ std::vector<char> aes_encrypt( const fc::sha512& key, const std::vector<char>& p
     auto cipher_len = aes_encrypt( (unsigned char*)plain_text.data(), plain_text.size(),  
                                  (unsigned char*)&key, ((unsigned char*)&key)+32,
                                  (unsigned char*)cipher_text.data() );
+    FC_ASSERT( cipher_len <= cipher_text.size() );
     cipher_text.resize(cipher_len);
     return cipher_text;