Add GetRawDigest() for hashes

Chaos/Hashing/Hash.hpp

@@ -10,6 +10,11 @@ template<typename T>
 class Hash
 {
 public:
+    auto GetRawDigest() const
+    {
+        return static_cast<const T &>(*this).GetRawDigest();
+    }
+
     std::string ToHexString() const
     {
         return static_cast<const T &>(*this).ToHexString();

Chaos/Hashing/Md4.hpp

@@ -131,6 +131,11 @@ private:
 
 struct Md4Hash : public Hash<Md4Hash>
 {
+    std::array<uint8_t, 16> GetRawDigest() const
+    {
+        return RawDigest;
+    }
+
     std::string ToHexString() const
     {
         char buf[33];

Chaos/Hashing/Md5.hpp

@@ -155,6 +155,11 @@ private:
 
 struct Md5Hash : public Hash<Md5Hash>
 {
+    std::array<uint8_t, 16> GetRawDigest() const
+    {
+        return RawDigest;
+    }
+
     std::string ToHexString() const
     {
         char buf[33];