using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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namespace GTech.Solution.Api.Common
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{
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public static class EncryptHelper
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{
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#region 创建字符串的MD5哈希值
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/// <summary>
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/// 创建字符串的MD5哈希值
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/// </summary>
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/// <param name="inputString"></param>
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/// <returns>字符串MD5哈希值的十六进制字符串</returns>
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public static string StringToMD5Hash(string inputString)
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{
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MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
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byte[] encryptedBytes = md5.ComputeHash(Encoding.ASCII.GetBytes(inputString));
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < encryptedBytes.Length; i++)
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{
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sb.AppendFormat("{0:x2}", encryptedBytes[i]);
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}
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return sb.ToString();
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}
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#endregion
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#region 1、一般可逆加密解密
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/// <summary>
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/// 加密
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/// </summary>
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/// <param name="data">加密数据</param>
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/// <param name="KEY_64">密钥</param>
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/// <param name="IV_64">加密向量</param>
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/// <returns>加密数据结果</returns>
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public static string Encode(string data, string KEY_64, string IV_64)
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{
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byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
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byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
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DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
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int i = cryptoProvider.KeySize;
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MemoryStream ms = new MemoryStream();
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CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
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StreamWriter sw = new StreamWriter(cst);
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sw.Write(data);
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sw.Flush();
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cst.FlushFinalBlock();
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sw.Flush();
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return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
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}
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/// <summary>
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/// 解密
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/// </summary>
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/// <param name="data">解密数据</param>
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/// <param name="KEY_64">密钥</param>
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/// <param name="IV_64">加密向量</param>
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/// <returns>解密数据结果</returns>
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public static string Decode(string data, string KEY_64, string IV_64)
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{
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byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
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byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
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byte[] byEnc;
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try
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{
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byEnc = Convert.FromBase64String(data);
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}
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catch
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{
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return null;
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}
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DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
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MemoryStream ms = new MemoryStream(byEnc);
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CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
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StreamReader sr = new StreamReader(cst);
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return sr.ReadToEnd();
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}
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#endregion
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#region 3、DES加密解密
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/// <summary>
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/// DES 加密
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/// </summary>
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/// <param name="str">加密字符串</param>
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/// <param name="encrytKey">密钥，要求八位</param>
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/// <param name="strDESIV">向量</param>
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/// <returns></returns>
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public static string DESEncode(string str, string strDESKey, string strDESIV)
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{
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return DESEncrytion.DESEncrypt(str, strDESKey, strDESIV);
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}
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/// <summary>
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/// DES 解密
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/// </summary>
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/// <param name="str">解密字符串</param>
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/// <param name="encrytKey">密钥，要求八位</param>
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/// <param name="strDESIV">向量</param>
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/// <returns></returns>
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public static string DESDecode(string str, string strDESKey, string strDESIV)
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{
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return DESEncrytion.DESDecrypt(str, strDESKey, strDESIV);
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}
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/// <summary>
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/// DES 加密 加密向量默认
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/// </summary>
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/// <param name="str">加密字符串</param>
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/// <param name="encrytKey">密钥，要求八位</param>
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/// <returns></returns>
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public static string DESEncode(string str, string encrytKey)
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{
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return DESEncrytion.EncryptDES(str, encrytKey);
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}
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/// <summary>
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/// DES 解密 加密向量默认
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/// </summary>
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/// <param name="str">待解密字符串</param>
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/// <param name="encrytKey">解密密钥,要求为8位,和加密密钥相同</param>
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/// <returns></returns>
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public static string DESDecode(string str, string encrytKey)
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{
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return DESEncrytion.DecryptDES(str, encrytKey);
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}
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#endregion
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#region 4、文件加密解密
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/// <summary>
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/// 加密文件
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/// </summary>
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/// <param name="inName">源文件全名称</param>
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/// <param name="outName">加密后文件保存全名称</param>
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/// <param name="desKey">加密密钥</param>
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/// <param name="desIV">加密向量</param>
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private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
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{
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FileEncrytion.EncryptData(inName, outName, desKey, desIV);
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}
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/// <summary>
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/// 解密文件
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/// </summary>
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/// <param name="inName">源文件全名称</param>
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/// <param name="outName">解密文件全名称</param>
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/// <param name="desKey">解密密钥</param>
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/// <param name="desIV">解密向量</param>
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private static void DecryptData(String inName, String outName, byte[] desKey, byte[] desIV)
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{
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FileEncrytion.DecryptData(inName, outName, desKey, desIV);
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}
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#endregion
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#region 6、对称加密
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/// <summary>
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/// 加密方法
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/// </summary>
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/// <param name="Source">待加密的串</param>
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/// <returns>经过加密的串</returns>
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public static string Encrypto(string Source)
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{
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return SymmetricEncrytion.Encrypto(Source);
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}
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/// <summary>
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/// 解密方法
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/// </summary>
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/// <param name="Source">待解密的串</param>
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/// <returns>经过解密的串</returns>
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public static string Decrypto(string Source)
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{
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return SymmetricEncrytion.Decrypto(Source);
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}
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#endregion
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}
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}
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