添加项目文件。

common/Tnb.Common/Security/HashHelper.cs

@@ -0,0 +1,94 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace JNPF.Common.Security
+{
+    /// <summary>
+    /// 字符串Hash操作类.
+    /// </summary>
+    public static class HashHelper
+    {
+        /// <summary>
+        /// 获取字符串的MD5哈希值，默认编码为<see cref="Encoding.UTF8"/>.
+        /// </summary>
+        public static string GetMd5(string value, Encoding? encoding = null)
+        {
+            if (encoding == null)
+                encoding = Encoding.UTF8;
+            byte[] bytes = encoding.GetBytes(value);
+            return GetMd5(bytes);
+        }
+
+        /// <summary>
+        /// 获取字节数组的MD5哈希值.
+        /// </summary>
+        public static string GetMd5(byte[] bytes)
+        {
+            StringBuilder sb = new StringBuilder();
+            MD5 hash = MD5.Create();
+            bytes = hash.ComputeHash(bytes);
+            foreach (byte b in bytes)
+            {
+                sb.AppendFormat("{0:x2}", b);
+            }
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// 获取字符串的SHA1哈希值，默认编码为<see cref="Encoding.UTF8"/>.
+        /// </summary>
+        public static string GetSha1(string value, Encoding? encoding = null)
+        {
+            StringBuilder sb = new StringBuilder();
+            SHA1 hash = SHA1.Create();
+            if (encoding == null)
+                encoding = Encoding.UTF8;
+
+            byte[] bytes = hash.ComputeHash(encoding.GetBytes(value));
+            foreach (byte b in bytes)
+            {
+                sb.AppendFormat("{0:x2}", b);
+            }
+
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// 获取字符串的Sha256哈希值，默认编码为<see cref="Encoding.UTF8"/>.
+        /// </summary>
+        public static string GetSha256(string value, Encoding? encoding = null)
+        {
+            StringBuilder sb = new StringBuilder();
+            SHA256 hash = SHA256.Create();
+            if (encoding == null)
+                encoding = Encoding.UTF8;
+
+            byte[] bytes = hash.ComputeHash(encoding.GetBytes(value));
+            foreach (byte b in bytes)
+            {
+                sb.AppendFormat("{0:x2}", b);
+            }
+
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// 获取字符串的Sha512哈希值，默认编码为<see cref="Encoding.UTF8"/>.
+        /// </summary>
+        public static string GetSha512(string value, Encoding? encoding = null)
+        {
+            StringBuilder sb = new StringBuilder();
+            SHA512 hash = SHA512.Create();
+            if (encoding == null)
+                encoding = Encoding.UTF8;
+
+            byte[] bytes = hash.ComputeHash(encoding.GetBytes(value));
+            foreach (byte b in bytes)
+            {
+                sb.AppendFormat("{0:x2}", b);
+            }
+
+            return sb.ToString();
+        }
+    }
+}