c#加密类使用方法示例
using System;using System.IO;using System.Text;using System.Security.Cryptography;using System.Web;namespace Encryption.App_Code{ /// /// 加密码类 /// public class Encryption { /// /// 加密 /// /// /// public static string DesEncrypt(string inputString) { return DesEncrypt(inputString, Key); } /// /// 解密 /// /// /// public static string DesDecrypt(string inputString) { return DesDecrypt(inputString, Key); } /// /// 密匙 /// private static string Key { get { return "hongye10"; } } /// /// 加密字符串 /// 注意:密钥必须为８位 /// /// 字符串 /// 密钥 /// 返回加密后的字符串 public static string DesEncrypt(string inputString, string encryptKey) { byte[] byKey = null; byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; try { byKey = System.Text.Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray = Encoding.UTF8.GetBytes(inputString); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Convert.ToBase64String(ms.ToArray()); } catch (System.Exception error) { //return error.Message; return null; } } /// /// 解密字符串 /// /// 加了密的字符串 /// 密钥 /// 返回解密后的字符串 public static string DesDecrypt(string inputString, string decryptKey) { byte[] byKey = null; byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byte[] inputByteArray = new Byte[inputString.Length]; try { byKey = System.Text.Encoding.UTF8.GetBytes(decryptKey.Substring(0, 8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); inputByteArray = Convert.FromBase64String(inputString); MemoryStream ms = new MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); System.Text.Encoding encoding = new System.Text.UTF8Encoding(); return encoding.GetString(ms.ToArray()); } catch (System.Exception error) { //return error.Message; return null; } } }}
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