using?System;
using?System.Collections.Generic;
using?System.IO;
using?System.Security.Cryptography;
using?System.Text;

///?

///?描述：RSA公鑰加密私鑰解密工具類
///?功能：RSA公鑰加密、私鑰解密、私鑰簽名、公鑰驗簽??
///?作者：yoyohan
///?創建時間：2019-02-12?09:49:41
///?

public?sealed?class?RSACrypt1
{
????///?
??
????///?私鑰簽名??
????///?
??
????///?待簽名字符串??
????///?私鑰??
????///?編碼格式??
????///?簽名后字符串??
????public?static?string?sign（string?content?string?privateKey?string?input_charset）
????{
????????byte[]?Data?=?Encoding.GetEncoding（input_charset）.GetBytes（content）;
????????RSACryptoServiceProvider?rsa?=?DecodePemPrivateKey（privateKey）;
????????SHA1?sh?=?new?SHA1CryptoServiceProvider（）;
????????byte[]?signData?=?rsa.SignData（Data?sh）;
????????return?Convert.Tobase64String（signData）;
????}

????///?
??
????///?公鑰驗簽??
????///?
??
????///?待驗簽字符串??
????///?簽名??
????///?公鑰??
????///?編碼格式??
????///?true（通過），false（不通過）??
????public?static?bool?verify（string?content?string?signedString?string?publicKey?string?input_charset）
????{
????????bool?result?=?false;
????????byte[]?Data?=?Encoding.GetEncoding（input_charset）.GetBytes（content）;
????????byte[]?data?=?Convert.Frombase64String（signedString）;
????????RSAParameters?paraPub?=?ConvertFromPublicKey（publicKey）;
????????RSACryptoServiceProvider?rsaPub?=?new?RSACryptoServiceProvider（）;
????????rsaPub.ImportParameters（paraPub）;
????????SHA1?sh?=?new?SHA1CryptoServiceProvider（）;
????????result?=?rsaPub.VerifyData（Data?sh?data）;
????????return?result;
????}

????///?
??
????///?公鑰加密??
????///?
??
????///?需要加密的字符串??
????///?公鑰??
????///?編碼格式??
????///?明文??
????public?static?string?encryptData（string?resData?string?publicKey?string?input_charset）
????{
????????byte[]?DataToEncrypt?=?Encoding.ASCII.GetBytes（resData）;
????????string?result?=?encrypt（DataToEncrypt?publicKey?input_charset）;
????????return?result;
????}


????///?
??
????///?私鑰解密??
????///?
??
????///?加密字符串??
????///?私鑰??
????///?編碼格式??
????///?明文??
????public?static?string?decryptData（string?resData?string?privateKey?string?input_charset）
????{
????????byte[]?DataToDecrypt?=?Convert.Frombase64String（resData）;
????????string?result?=?““;
????????for?（int?j?=?0;?j?????????{
????????????byte[]?buf?=?new?byte[128];
????????????for?（int?i?=?0;?i?????????????{

????????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????2371584??2018-04-08?23:30??RSATool\BouncyCastle.Crypto.dll
?????文件???????15569??2019-02-15?11:50??RSATool\RSACrypt1.cs
?????文件????????5394??2019-02-15?13:29??RSATool\RSACrypt2.cs
?????文件???????15628??2019-02-15?14:03??RSATool\微信截圖_20190215140253.png
?????目錄???????????0??2019-02-15?14:03??RSATool\