Merge pull request #471 from johelvisguzman/utility

Moved the internal string hashing extensions to a Hasher utility class

Author: johelvisguzman

src/DotNetToolkit.Repository/Extensions/CachingProviderExtensions.cs

@@ -552,7 +552,7 @@ private static string FormatHashedKey<T>([NotNull] this ICacheProvider cacheProv
                 Glue,
                 CacheProviderManager.GlobalCachingPrefixCounter,
                 cacheProvider.GetCachingPrefixCounter<T>(),
-                key.ToMD5(),
+                Hasher.ComputeMD5(key),
                 CacheProviderManager.CachePrefix);
         }
 

src/DotNetToolkit.Repository/Extensions/StringExtensions.cs

@@ -26,40 +26,6 @@ public static string Indent([CanBeNull] this string value, int size)
             return sb.ToString().Substring(1);
         }
 
-        public static string ToSHA256([NotNull] this string value)
-        {
-            Guard.NotEmpty(value, nameof(value));
-
-            var sha256 = System.Security.Cryptography.SHA256.Create();
-            var hashInBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(value));
-            var sb = new StringBuilder();
-
-            foreach (var b in hashInBytes)
-            {
-                sb.Append(b.ToString("x2"));
-            }
-
-            return sb.ToString();
-        }
-
-        public static string ToMD5([NotNull] this string value)
-        {
-            Guard.NotEmpty(value, nameof(value));
-
-            var bytes = Encoding.Unicode.GetBytes(value.ToCharArray());
-
-            using (var md5 = System.Security.Cryptography.MD5.Create())
-            {
-                var hash = md5.ComputeHash(bytes);
-
-                return hash
-                    .Aggregate(
-                        new StringBuilder(32),
-                        (sb, b) => sb.Append(b.ToString("x2")))
-                    .ToString();
-            }
-        }
-
         public static bool ToBoolean(this string value)
         {
             if (value == null || value.Trim().Length == 0)

src/DotNetToolkit.Repository/Utility/Hasher.cs

@@ -0,0 +1,36 @@
+namespace DotNetToolkit.Repository.Utility
+{
+    using JetBrains.Annotations;
+    using System.Linq;
+    using System.Security.Cryptography;
+    using System.Text;
+
+    /// <summary>
+    /// Contains various utilities for hashing.
+    /// </summary>
+    internal static class Hasher
+    {
+        public static string ComputeMD5([NotNull] string value)
+        {
+            using (var md5 = MD5.Create())
+            {
+                return ComputeHashAlgorithm(md5, value);
+            }
+        }
+
+        private static string ComputeHashAlgorithm([NotNull] HashAlgorithm algorithm, [NotNull] string value)
+        {
+            Guard.NotNull(algorithm, nameof(algorithm));
+            Guard.NotEmpty(value, nameof(value));
+
+            var bytes = Encoding.Unicode.GetBytes(value.ToCharArray());
+            var hash = algorithm.ComputeHash(bytes);
+
+            return hash
+                .Aggregate(
+                    new StringBuilder(32),
+                    (sb, b) => sb.Append(b.ToString("x2")))
+                .ToString();
+        }
+    }
+}