我學習的加密,並在這個過程中,我偶然發現了這個C#代碼..默認情況下,C#使用的RSA算法是什麼?Crypto ++中的參數是什麼?
//Encrypts a string with RSA public key
public static string EncryptTextRSA(string text, int keySize, string publicKeyXml)
{
var encrypted = RSAEncrypt(Encoding.UTF8.GetBytes(text), keySize, publicKeyXml);
return Convert.ToBase64String(encrypted);
}
//Rsa encryption algorithm
public static byte[] RSAEncrypt(byte[] data, int keySize, string publicKeyXml)
{
using (var provider = new RSACryptoServiceProvider(keySize))
{
provider.FromXmlString(publicKeyXml);
return provider.Encrypt(data, OAEP);
}
}
獲得的信息(從PHP後端)結束這樣的:
私鑰:
<RSAKeyValue>
<Modulus>3+A8GT1MAdf+MzIZGbGa5GSAjtvxsIeJnsZKeIP6oiK76TiTQqr6vgYKpE+jQBdI6WMsWv2H9TYWv6NmfzMI9+RHV82V5r71vG5o0GwvfzHj3I/FzYwvM8vjXiHIO1T4kD4ky4VNTtq29sW82pJeo4N50EgiWNvnczYKoG8PUaQIoW7j7kuDhgLtWx40zTwR6kxiqJm80oJRyLgxZEkH9YSK/rsGGtKmkOSXpMIAaJoDtBExqYtiBD6v4juAHejdqgUa1xuWLvgvdJhjGEP0kU1C2sye1QYUXN2el2+XU/N3qhsS2g4wn4VBWYNOm2Heq/rDUmkPLRcrRXzYTlVmXQ==</Modulus>
<Exponent>AQAB</Exponent>
<P>8Iu+4wMdHYmpzOvujzsnOCjQxRKPZxFnw9qDG1xf2/h727kfDyr2FBCXvGNHTLuRzwbc++/nUmdyvEh2uhAYlTU8eB/IcTiSzDeUWye/Bq6CL6bHR3f65bIK4K0aqFyq8eDtIEzaU0y1TxXnp6Sosk6sqp28keE1C2acnIaXQpM=</P>
<Q>7kJRhudKzuo33N5hoTYz6rhvU++l5gdFP6RHRoGW6qBjVlxIzptUE+fYVZIvvyYQDewccKVEOb4s8etjL98lfJ85tHCxengDou9hsNh0FERM65QYN8iPXLAU39Ubca5mmkm7Hb3f3JebZAMfxe2Q2hqU9ZHFIhiiVqpmvrpqmU8=</Q>
<DP>tfwj6L+8UVKLQlvk2jwYieZnPBG0qHeEl6pDsnmKlHND0ZIWq3UHQ1riUUaS9LybrZM1sO1phvB433W7TT1MO+ZQ31i8Xtw8Q4BxHx3M6hMwrzhwX+On0AuJKz4LgwDI28Id5GgAbTEFotWhszVh47Sd8V7xATTu2rdBGTLCUT0=</DP>
<DQ>sQIiMZhKMpk9sWChpbRwM7ScOP61AMVsBBEXRuFl7qADzRg4mw45E6TOSxyVTmyHxuAgbOvLWR7Zo01eXiVpY0GkDFMg97yL7xPrPwhAjQIFJ4vZxi/BmnnSuExJ3FZWMdAPLNRwqSEVN+M+SrzpPbA79Ik8rM0iZkKonJBAO+8=</DQ>
<InverseQ>DClm/3Fg7j45kjUB1Cb3XKT73j+RGHmOQUzVlNAlkCocjx4qVmOuIqi2eMKUbaTgsOPXyZQ82vQvYmQBmR4/b7gncK1X8mlcrVzVwEaO3kr7BOm8OsNnvD/V9rcwqiJCzoMFYZGod3tbJjvzg02xrBN9+nMLUkyZLmaUojAk1pY=</InverseQ>
<D>TlfT8CkpLgP96sB/VCR4xa/95QBG5bWojS1q5h2ZWZ+6DnVD4zKeKF1I4BMWV9lOJI4V+Yl7SG4zK8Dsn1qmqsjxxmIlMOhmahhhCX6yaFp3GLofSDzkT8XrvQcpYMntady1V5tAYHXdTSIJYpuSDrp1qFN14Y6iwgiJU3dJ7xFGfbc0D6RXO3r0f/n4QIbIX2wzYc0H5AonKWvVEXY7dUZPhOca1+okEwnDtoIObCTuuuesieK3nv4ZwoJX4eDXD9bCv2jXlv5yIzjKLZvH69TN3QNH59gktRA4ZUkG9LhKhwESQ7NrxhcwKJSxPVkk4ECVcSNxINATgw94mW9AqQ==</D>
</RSAKeyValue>
而導致產生的C#程序產生密文:
Jmk6JpFNODhMf/8r6fa8kQfyTPiVhZg9oyyYBmh1WXJrn5D5juvzZ8xjYzFUPaGZy+wiSlSEkR69o6UcjOkSi3B3dmtmFktGb0D36/yYneNES0Agca+UHWPn8triIMw4EYDuo8auMQCGR3gGg/MiJrW+Bo2gvZCoLxkAdVgoSl1e20LB1TH6UtGOs0ioMyuwG8TJSYcJVbvZZI+aZDW2YR6nrrBqcWa6n/KlLXWfbDiRq1rkmQpiIwpDRbiHOB+rao2Q93g++MYHtM0IDGWfvnWXRgXYcptMVTvzhvcdzdFwL6taa5LDAhs2HzFEawpk7EM5MpBlg1bQjCeWImIlWw==
我一直在嘗試在Visual Studio 2014中使用Crypto ++實現相同的功能,其問題從缺乏自動XML解析和導入預生成模數和指數的一般功能。
我的C++代碼是這樣的:
std::string base64ToHex(std::string base64String)
{
std::string decodedString, finalString;
CryptoPP::StringSource river(base64String, true,
new CryptoPP::Base64Decoder(new CryptoPP::StringSink(decodedString)));
CryptoPP::StringSource stream(decodedString, true,
new CryptoPP::HexEncoder(new CryptoPP::StringSink(finalString)));
finalString.erase(std::remove(finalString.begin(), finalString.end(), '\n'), finalString.end());
return finalString;
}
std::string RSAEncryptString(std::string message, std::string modulus, std::string exponent)
{
char modulusCharred[1024];
strncpy_s(modulusCharred, base64ToHex(modulus).c_str(), sizeof(modulusCharred));
modulusCharred[sizeof(modulusCharred) - 1] = 0;
char exponentCharred[1024];
strncpy_s(exponentCharred, base64ToHex(exponent).c_str(), sizeof(exponentCharred));
exponentCharred[sizeof(exponentCharred) - 1] = 0;
Integer n(modulusCharred);
Integer e(exponentCharred);
RSA::PublicKey pubKey;
pubKey.Initialize(n, e);
Integer m, c; m = Integer((const byte *)message.data(), message.size()); c = pubKey.ApplyFunction(m);
std::stringstream ssr; ssr << hex << c;
return (ssr.str());
}
生成的密碼(由C++實現,使用不同的私有密鑰):
hXM7DAe/5tymIzEsQgNGiiCnA1p/J1x7Tvu6Lhbv6ApkGwfXuDi4bXZhknLDmbTXkoMVrHKnHZE6X1+pAi9+4SxN2sVcZ/cEQx+6riBsYZrSOVqq9bzEOD8J85FIUIbWZmp8kiKBCzK7F9Ke+q5/x9aOHh29Bq7cFu//
當試圖解密密文(與它的相應的專用密鑰,它不認識它,不像C#示例那樣)
該代碼基於Crypto ++的RAW RSA Encryption Wiki,這是什麼算法ithm在C#中默認使用,以及如何在Crypto ++中複製(使用與公用密鑰在C#中使用的算法相同的算法進行加密 - 我無法將其從後端拉回)
要使C#在ASN.1/DER中寫入密鑰,請參閱[加密互操作性:密鑰](https://www.codeproject.com/Articles/25487/Cryptographic-Interoperability-Keys)。我相信.Net的後續版本有一個本地方法來編寫ASN.1/DER,但我不記得方法名稱或過程。 – jww
要處理Crypto ++中的簽名,請參閱[加密互操作性:數字簽名](https://www.codeproject.com/Articles/25590/Cryptographic-Interoperability-Digital-Signatures)。 [原始RSA](https://www.cryptopp.com/wiki/Raw_RSA)是這項工作的錯誤工具。如果我記得正確,您需要使用PKCS消息格式和填充。 – jww
我已經測試了這段代碼來初始化我的密鑰,它並不適用於我:我爲此創建了一個新函數:請參閱https:// stackoverflow。com/a/45939796/3205529 – Malick