From 7baae99cd86ade99986b6f081a93a16043d9cc50 Mon Sep 17 00:00:00 2001
From: Fu Diwei <fudiwei@sina.com>
Date: Fri, 28 May 2021 19:09:36 +0800
Subject: [PATCH] =?UTF-8?q?feat(wxapi):=20=E5=AE=8C=E6=88=90=20SHA-1?=
 =?UTF-8?q?=E3=80=81HMAC-SHA-256=20=E5=B7=A5=E5=85=B7=E7=B1=BB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Utilities/HmacSha256Util.cs               | 44 +++++++++++++++++++
 .../Utilities/Sha1Util.cs                     | 39 ++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100644 src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/HmacSha256Util.cs
 create mode 100644 src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/Sha1Util.cs

diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/HmacSha256Util.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/HmacSha256Util.cs
new file mode 100644
index 00000000..89064155
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/HmacSha256Util.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace SKIT.FlurlHttpClient.Wechat.Api.Utilities
+{
+    /// <summary>
+    /// HMAC-SHA-1 算法工具类。
+    /// </summary>
+    public static class HmacSha256Util
+    {
+        /// <summary>
+        /// 获取信息摘要。
+        /// </summary>
+        /// <param name="secretBytes">密钥字节数组。</param>
+        /// <param name="bytes">信息字节数组。</param>
+        /// <returns>信息摘要。</returns>
+        public static string Hash(byte[] secretBytes, byte[] bytes)
+        {
+            if (secretBytes == null) throw new ArgumentNullException(nameof(secretBytes));
+            if (bytes == null) throw new ArgumentNullException(nameof(bytes));
+
+            using HMAC hmac = new HMACSHA256(secretBytes);
+            byte[] hashBytes = hmac.ComputeHash(bytes);
+            return BitConverter.ToString(hashBytes).Replace("-", "");
+        }
+
+        /// <summary>
+        /// 获取信息摘要。
+        /// </summary>
+        /// <param name="secret">密钥。</param>
+        /// <param name="message">文本信息。</param>
+        /// <returns>信息摘要。</returns>
+        public static string Hash(string secret, string message)
+        {
+            if (secret == null) throw new ArgumentNullException(nameof(secret));
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
+            byte[] secretBytes = Encoding.UTF8.GetBytes(secret);
+            byte[] bytes = Encoding.UTF8.GetBytes(message);
+            return Hash(secretBytes, bytes);
+        }
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/Sha1Util.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/Sha1Util.cs
new file mode 100644
index 00000000..b8385dac
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Utilities/Sha1Util.cs
@@ -0,0 +1,39 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace SKIT.FlurlHttpClient.Wechat.Api.Utilities
+{
+    /// <summary>
+    /// SHA-1 算法工具类。
+    /// </summary>
+    public static class Sha1Util
+    {
+        /// <summary>
+        /// 获取信息摘要。
+        /// </summary>
+        /// <param name="bytes">信息字节数组。</param>
+        /// <returns>信息摘要。</returns>
+        public static string Hash(byte[] bytes)
+        {
+            if (bytes == null) throw new ArgumentNullException(nameof(bytes));
+
+            using SHA1 sha = SHA1.Create();
+            byte[] hashBytes = sha.ComputeHash(bytes);
+            return BitConverter.ToString(hashBytes).Replace("-", "");
+        }
+
+        /// <summary>
+        /// 获取信息摘要。
+        /// </summary>
+        /// <param name="message">文本信息。</param>
+        /// <returns>信息摘要。</returns>
+        public static string Hash(string message)
+        {
+            if (message == null) throw new ArgumentNullException(nameof(message));
+
+            byte[] bytes = Encoding.UTF8.GetBytes(message);
+            return Hash(bytes);
+        }
+    }
+}