feat!: switch to hex format instead of base64

Author: kamranayub

AspNet.MVC5.AssetVersioning.Tests/ExtensionsTests.cs

@@ -35,7 +35,7 @@ public void ComputeHash_Returns_Sha256_Hash_of_File_Contents()
         {
             var hash = AssetVersionCache.ComputeHash("test.txt");
 
-            Assert.AreEqual("5b9VrKRrgLl2zwVdUOwhwihZ2cwlYdjQTqgEVV+G624=", hash);
+            Assert.AreEqual("e5bf55aca46b80b976cf055d50ec21c22859d9cc2561d8d04ea804555f86eb6e", hash);
         }
 
         [TestMethod]
@@ -48,7 +48,7 @@ public void GetOrAddCachedVersion_Caches_File_Hash()
 
             Assert.AreEqual(1, cache.Count);
             Assert.AreEqual(1, assetCache.Count);
-            Assert.AreEqual("5b9VrKRrgLl2zwVdUOwhwihZ2cwlYdjQTqgEVV+G624=", assetCache["test.txt"]);
+            Assert.AreEqual("e5bf55aca46b80b976cf055d50ec21c22859d9cc2561d8d04ea804555f86eb6e", assetCache["test.txt"]);
             Assert.AreEqual(hash, assetCache["test.txt"]);
 
             var cachedHash = AssetVersionCache.GetOrAddCachedVersion("test.txt", cache);

src/AssetVersionCache.cs

@@ -4,6 +4,7 @@
 using System.IO;
 using System.Linq;
 using System.Security.Cryptography;
+using System.Security.Policy;
 using System.Text;
 using System.Threading.Tasks;
 using System.Web;
@@ -34,7 +35,8 @@ public static string ComputeHash(string filePath)
             {
                 using (var sha256 = SHA256.Create())
                 {
-                    return Convert.ToBase64String(sha256.ComputeHash(stream));
+                    return BitConverter.ToString(sha256.ComputeHash(stream))
+                        .Replace("-", "").ToLower();
                 }
             }
         }