2 files changed, 15 insertions, 1 deletions
diff --git a/src/common/Cryptography/BigNumber.cpp b/src/common/Cryptography/BigNumber.cpp
index 613cd49ae3f..e0241c77486 100644
--- a/src/common/Cryptography/BigNumber.cpp
+++ b/src/common/Cryptography/BigNumber.cpp
@@ -198,7 +198,7 @@ void BigNumber::GetBytes(uint8* buf, size_t bufsize, bool littleEndian) const
         std::reverse(buf, buf + bufsize);
 #else
     int res = littleEndian ? BN_bn2lebinpad(_bn, buf, bufsize) : BN_bn2binpad(_bn, buf, bufsize);
-    ASSERT(res > 0, "Buffer of size %zu is too small to hold bignum with %zu bytes.\n", bufsize, BN_num_bytes(_bn));
+    ASSERT(res > 0, "Buffer of size %zu is too small to hold bignum with %d bytes.\n", bufsize, BN_num_bytes(_bn));
 #endif
 }
 
diff --git a/src/common/Utilities/Util.h b/src/common/Utilities/Util.h
index b3270eb6c2c..9592f36a7b7 100644
--- a/src/common/Utilities/Util.h
+++ b/src/common/Utilities/Util.h
@@ -20,6 +20,7 @@
 
 #include "Define.h"
 #include "Errors.h"
+#include <array>
 #include <string>
 #include <vector>
 #include "advstd.h"
@@ -306,6 +307,19 @@ TC_COMMON_API std::string ByteArrayToHexStr(uint8 const* bytes, size_t length, b
 template <typename Container>
 std::string ByteArrayToHexStr(Container const& c, bool reverse = false) { return ByteArrayToHexStr(advstd::data(c), advstd::size(c), reverse); }
 TC_COMMON_API void HexStrToByteArray(std::string const& str, uint8* out, bool reverse = false);
+template <size_t Size>
+void HexStrToByteArray(std::string const& str, std::array<uint8, Size>& buf, bool reverse = false)
+{
+    ASSERT(str.size() == (2 * Size));
+    HexStrToByteArray(str, buf.data(), reverse);
+}
+template <size_t Size>
+std::array<uint8, Size> HexStrToByteArray(std::string const& str, bool reverse = false)
+{
+    std::array<uint8, Size> arr;
+    HexStrToByteArray(str, arr, reverse);
+    return arr;
+}
 
 TC_COMMON_API bool StringToBool(std::string const& str);
 TC_COMMON_API float DegToRad(float degrees);