LibCrypto: Move each subsection into its own namespace

Author: https://github.com/alimpfard
Commit: 4f89a377a4
Pull-request: https://github.com/SerenityOS/serenity/pull/1661
Reviewed-by: https://github.com/Dexesttp
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/itamar8910

Libraries/LibCrypto/Hash/HashFunction.h

@@ -31,21 +31,24 @@
 #include <AK/Types.h>
 
 namespace Crypto {
+namespace Hash {
 
-template<size_t BlockS, typename DigestT>
-class HashFunction {
-public:
-    static constexpr auto BlockSize = BlockS;
-    using DigestType = DigestT;
+    template <size_t BlockS, typename DigestT>
+    class HashFunction {
+    public:
+        static constexpr auto BlockSize = BlockS / 8;
+        static constexpr auto DigestSize = sizeof(DigestT);
 
-    static size_t block_size() { return BlockSize; };
-    static size_t digest_size() { return sizeof(DigestType); };
+        using DigestType = DigestT;
 
-    virtual void update(const u8*, size_t) = 0;
-    virtual void update(const ByteBuffer& buffer) = 0;
-    virtual void update(const StringView& string) = 0;
+        static size_t block_size() { return BlockSize; };
+        static size_t digest_size() { return DigestSize; };
 
-    virtual DigestType digest() = 0;
-};
+        virtual void update(const u8*, size_t) = 0;
+        virtual void update(const ByteBuffer& buffer) = 0;
+        virtual void update(const StringView& string) = 0;
 
+        virtual DigestType digest() = 0;
+    };
+}
 }