一、MD5代码封装
/// <summary> /// MD5加密 /// </summary> public class Md5 { /// <summary> /// MD5加密 /// </summary> /// <param name="str">加密字符</param> /// <param name="code">加密位数16/32</param> /// <returns></returns> public static string md5(string str, int code) { string strEncrypt = string.Empty; if (code == 16) { strEncrypt = Md5Hash(str).Substring(8, 16); } if (code == 32) { strEncrypt = Md5Hash(str); } return strEncrypt; } /// <summary> /// 32位MD5加密 /// </summary> /// <param name="input"></param> /// <returns></returns> public static string Md5Hash(string input) { MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider(); byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input)); StringBuilder sBuilder = new StringBuilder(); for (int i = 0; i < data.Length; i++) { sBuilder.Append(data[i].ToString("x2")); } return sBuilder.ToString().ToUpper(); } }
二、DES代码封装
/// <summary> /// DES加密、解密帮助类 /// </summary> public class DESEncrypt { private static string DESKey = "Jiuyi8899"; #region ========加密======== /// <summary> /// 加密 /// </summary> /// <param name="Text"></param> /// <returns></returns> public static string Encrypt(string Text) { return Encrypt(Text, DESKey); } /// <summary> /// 加密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string Encrypt(string Text, string sKey) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray; inputByteArray = Encoding.Default.GetBytes(Text); string value = Md5.Md5Hash(sKey).Substring(0, 8); des.Key = ASCIIEncoding.ASCII.GetBytes(value); des.IV = ASCIIEncoding.ASCII.GetBytes(value); System.IO.MemoryStream ms = new System.IO.MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); foreach (byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}", b); } return ret.ToString(); } #endregion #region ========解密======== /// <summary> /// 解密 /// </summary> /// <param name="Text"></param> /// <returns></returns> public static string Decrypt(string Text) { if (!string.IsNullOrEmpty(Text)) { return Decrypt(Text, DESKey); } else { return ""; } } /// <summary> /// 解密数据 /// </summary> /// <param name="Text"></param> /// <param name="sKey"></param> /// <returns></returns> public static string Decrypt(string Text, string sKey) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); int len; len = Text.Length / 2; byte[] inputByteArray = new byte[len]; int x, i; for (x = 0; x < len; x++) { i = Convert.ToInt32(Text.Substring(x * 2, 2), 16); inputByteArray[x] = (byte)i; } string value = Md5.Md5Hash(sKey).Substring(0, 8); des.Key = ASCIIEncoding.ASCII.GetBytes(value); des.IV = ASCIIEncoding.ASCII.GetBytes(value); System.IO.MemoryStream ms = new System.IO.MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Encoding.Default.GetString(ms.ToArray()); } #endregion }