加密时:先对string进行utf8解析成数组-->对数组进行加密-->对加密结果用base64解析成string。
那么揭秘时,对字符串的解析方式是必须要“倒”过来的,就成这样子了:
解密时:先对string进行base64解析成数组-->对数组进行解密-->对解密结果用utf8解析成string
using System; using System.Security.Cryptography; using System.Text; namespace ConsoleApp14 { public delegate void GreetDelegate(string name); class Program { private static void Main(string[] args) { string s = EncodeStr("Good"); Console.WriteLine(s); string ss = "hFsfyUinz3jzjulh0y7HWw=="; Console.WriteLine(DecodeStr(ss)); Console.ReadKey(); } //加密和解密的密钥必须相等。 public static string EncodeStr(string ss) { string s = string.Empty; //设置密钥 byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012"); //加密时用utf8,当解密时要反过来 byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(ss); //建立算法实例 RijndaelManaged r = new RijndaelManaged(); //设置属性 r.Key = keyArray; r.Mode = CipherMode.ECB; r.Padding = PaddingMode.PKCS7; //制定加密或者解密方式 ICryptoTransform ic = r.CreateEncryptor(); byte[] bb= ic.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); //以base64进行加密输出,当解密时要先用base64进行解析 s = Convert.ToBase64String(bb); return s; } public static string DecodeStr(string ss) { string s = string.Empty; //设置密钥 byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012"); byte[] toEncryptArray = Convert.FromBase64String(ss); //建立算法实例 RijndaelManaged r = new RijndaelManaged(); //设置属性 r.Key = keyArray; r.Mode = CipherMode.ECB; r.Padding = PaddingMode.PKCS7; //制定加密或者解密方式 ICryptoTransform ic = r.CreateDecryptor(); byte[] bb = ic.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); s = UTF8Encoding.UTF8.GetString(bb); return s; } } }