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);
+        }
+    }
+}