[C#] 簡單的 Helper 封裝 -- SecurityHelper 安全助手：封裝加密算法（MD5、SHA、HMAC、DES、RSA）
阿新 • • 發佈：2018-12-26
cat equals des input ignore uri put class style
#region using System; using System.IO; using System.Security.Cryptography; using System.Text; #endregion namespace Wen.Helpers.Common { /// <summary> /// 安全助手 /// </summary> public sealed class SecurityHelper { private static readonly byte[] IvBytes = {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF}; #region 通用加密算法 /// <summary> /// 哈希加密算法 /// </summary> /// <param name="hashAlgorithm"> 所有加密哈希算法實現均必須從中派生的基類 </param> /// <param name="input"> 待加密的字符串 </param> /// <param name="encoding">字符編碼 </param> /// <returns></returns> private static string HashEncrypt(HashAlgorithm hashAlgorithm, string input, Encoding encoding) { var data = hashAlgorithm.ComputeHash(encoding.GetBytes(input)); return BitConverter.ToString(data).Replace("-", ""); } /// <summary> /// 驗證哈希值 /// </summary> /// <param name="hashAlgorithm"> 所有加密哈希算法實現均必須從中派生的基類 </param> /// <param name="unhashedText"> 未加密的字符串 </param> /// <param name="hashedText"> 經過加密的哈希值 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> private static bool VerifyHashValue(HashAlgorithm hashAlgorithm, string unhashedText, string hashedText, Encoding encoding) { return string.Equals(HashEncrypt(hashAlgorithm, unhashedText, encoding), hashedText, StringComparison.OrdinalIgnoreCase); } #endregion 通用加密算法 #region 哈希加密算法 #region MD5 算法 /// <summary> /// MD5 加密 /// </summary> /// <param name="input"> 待加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string Md5Encrypt(string input, Encoding encoding) { return HashEncrypt(MD5.Create(), input, encoding); } /// <summary> /// 驗證 MD5 值 /// </summary> /// <param name="input"> 未加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static bool VerifyMd5Value(string input, Encoding encoding) { return VerifyHashValue(MD5.Create(), input, Md5Encrypt(input, encoding), encoding); } #endregion MD5 算法 #region SHA1 算法 /// <summary> /// SHA1 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string Sha1Encrypt(string input, Encoding encoding) { return HashEncrypt(SHA1.Create(), input, encoding); } /// <summary> /// 驗證 SHA1 值 /// </summary> /// <param name="input"> 未加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static bool VerifySha1Value(string input, Encoding encoding) { return VerifyHashValue(SHA1.Create(), input, Sha1Encrypt(input, encoding), encoding); } #endregion SHA1 算法 #region SHA256 算法 /// <summary> /// SHA256 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string Sha256Encrypt(string input, Encoding encoding) { return HashEncrypt(SHA256.Create(), input, encoding); } /// <summary> /// 驗證 SHA256 值 /// </summary> /// <param name="input"> 未加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static bool VerifySha256Value(string input, Encoding encoding) { return VerifyHashValue(SHA256.Create(), input, Sha256Encrypt(input, encoding), encoding); } #endregion SHA256 算法 #region SHA384 算法 /// <summary> /// SHA384 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string Sha384Encrypt(string input, Encoding encoding) { return HashEncrypt(SHA384.Create(), input, encoding); } /// <summary> /// 驗證 SHA384 值 /// </summary> /// <param name="input"> 未加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static bool VerifySha384Value(string input, Encoding encoding) { return VerifyHashValue(SHA256.Create(), input, Sha384Encrypt(input, encoding), encoding); } #endregion SHA384 算法 #region SHA512 算法 /// <summary> /// SHA512 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string Sha512Encrypt(string input, Encoding encoding) { return HashEncrypt(SHA512.Create(), input, encoding); } /// <summary> /// 驗證 SHA512 值 /// </summary> /// <param name="input"> 未加密的字符串 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static bool VerifySha512Value(string input, Encoding encoding) { return VerifyHashValue(SHA512.Create(), input, Sha512Encrypt(input, encoding), encoding); } #endregion SHA512 算法 #region HMAC-MD5 加密 /// <summary> /// HMAC-MD5 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="key"> 密鑰 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string HmacMd5Encrypt(string input, string key, Encoding encoding) { return HashEncrypt(new HMACMD5(encoding.GetBytes(key)), input, encoding); } #endregion HMAC-MD5 加密 #region HMAC-SHA1 加密 /// <summary> /// HMAC-SHA1 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="key"> 密鑰 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string HmacSha1Encrypt(string input, string key, Encoding encoding) { return HashEncrypt(new HMACSHA1(encoding.GetBytes(key)), input, encoding); } #endregion HMAC-SHA1 加密 #region HMAC-SHA256 加密 /// <summary> /// HMAC-SHA256 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="key"> 密鑰 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string HmacSha256Encrypt(string input, string key, Encoding encoding) { return HashEncrypt(new HMACSHA256(encoding.GetBytes(key)), input, encoding); } #endregion HMAC-SHA256 加密 #region HMAC-SHA384 加密 /// <summary> /// HMAC-SHA384 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="key"> 密鑰 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string HmacSha384Encrypt(string input, string key, Encoding encoding) { return HashEncrypt(new HMACSHA384(encoding.GetBytes(key)), input, encoding); } #endregion HMAC-SHA384 加密 #region HMAC-SHA512 加密 /// <summary> /// HMAC-SHA512 加密 /// </summary> /// <param name="input"> 要加密的字符串 </param> /// <param name="key"> 密鑰 </param> /// <param name="encoding"> 字符編碼 </param> /// <returns></returns> public static string HmacSha512Encrypt(string input, string key, Encoding encoding) { return HashEncrypt(new HMACSHA512(encoding.GetBytes(key)), input, encoding); } #endregion HMAC-SHA512 加密 #endregion 哈希加密算法 #region 對稱加密算法 #region Des 加解密 /// <summary> /// DES 加密 /// </summary> /// <param name="input"> 待加密的字符串 </param> /// <param name="key"> 密鑰（8位） </param> /// <returns></returns> public static string DesEncrypt(string input, string key) { try { var keyBytes = Encoding.UTF8.GetBytes(key); //var ivBytes = Encoding.UTF8.GetBytes(iv); var des = DES.Create(); des.Mode = CipherMode.ECB; //兼容其他語言的 Des 加密算法 des.Padding = PaddingMode.Zeros; //自動補 0 using (var ms = new MemoryStream()) { var data = Encoding.UTF8.GetBytes(input); using (var cs = new CryptoStream(ms, des.CreateEncryptor(keyBytes, IvBytes), CryptoStreamMode.Write) ) { cs.Write(data, 0, data.Length); cs.FlushFinalBlock(); } return Convert.ToBase64String(ms.ToArray()); } } catch { return input; } } /// <summary> /// DES 解密 /// </summary> /// <param name="input"> 待解密的字符串 </param> /// <param name="key"> 密鑰（8位） </param> /// <returns></returns> public static string DesDecrypt(string input, string key) { try { var keyBytes = Encoding.UTF8.GetBytes(key); //var ivBytes = Encoding.UTF8.GetBytes(iv); var des = DES.Create(); des.Mode = CipherMode.ECB; //兼容其他語言的Des加密算法 des.Padding = PaddingMode.Zeros; //自動補0 using (var ms = new MemoryStream()) { var data = Convert.FromBase64String(input); using (var cs = new CryptoStream(ms, des.CreateDecryptor(keyBytes, IvBytes), CryptoStreamMode.Write) ) { cs.Write(data, 0, data.Length); cs.FlushFinalBlock(); } return Encoding.UTF8.GetString(ms.ToArray()); } } catch { return input; } } #endregion Des 加解密 #endregion 對稱加密算法 #region 非對稱加密算法 /// <summary> /// 生成 RSA 公鑰和私鑰 /// </summary> /// <param name="publicKey"> 公鑰 </param> /// <param name="privateKey"> 私鑰 </param> public static void GenerateRsaKeys(out string publicKey, out string privateKey) { using (var rsa = new RSACryptoServiceProvider()) { publicKey = rsa.ToXmlString(false); privateKey = rsa.ToXmlString(true); } } /// <summary> /// RSA 加密 /// </summary> /// <param name="publickey"> 公鑰 </param> /// <param name="content"> 待加密的內容 </param> /// <returns> 經過加密的字符串 </returns> public static string RsaEncrypt(string publickey, string content) { var rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(publickey); var cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false); return Convert.ToBase64String(cipherbytes); } /// <summary> /// RSA 解密 /// </summary> /// <param name="privatekey"> 私鑰 </param> /// <param name="content"> 待解密的內容 </param> /// <returns> 解密後的字符串 </returns> public static string RsaDecrypt(string privatekey, string content) { var rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(privatekey); var cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false); return Encoding.UTF8.GetString(cipherbytes); } #endregion 非對稱加密算法 } }
[C#] 簡單的 Helper 封裝 -- SecurityHelper 安全助手：封裝加密算法（MD5、SHA、HMAC、DES、RSA）