從RSA密鑰對獲取私鑰/公鑰base64表示

Question

我想在C＃中生成RSA密鑰對。 我能夠獲得xml字符串的鍵，但我需要base64表示它們。 這是我的xml代碼

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

privateKeyXmlText = rsa.ToXmlString(true);
publicKeyXmlText = rsa.ToXmlString(false);

但我想要的是什么

privateKeyStr=="MIICITAjBgoqhkiG9w0BDAEDMBUEEKaTCK5mE2MsQANxDAfaJe8CAQoEggH47qb6bFO+a2Fj...";
publicKeyStr == "MIIBKjCB4wYHKoZIzj0CATCB1wIBATAsBgcqhkjOPQEBAiEA/////wAA...";

有任何想法嗎？

Answer 1

（回答） C＃從RSACryptoServiceProvider導出私有/公共RSA密鑰到PEM字符串

public static Func<string, string> ToBase64PemFromKeyXMLString= (xmlPrivateKey) =>
        {
            if (string.IsNullOrEmpty(xmlPrivateKey))
                throw new ArgumentNullException("RSA key must contains value!");
            var keyContent = new PemReader(new StringReader(xmlPrivateKey));
            if (keyContent == null)
                throw new ArgumentNullException("private key is not valid!");
            var ciphrPrivateKey = (AsymmetricCipherKeyPair)keyContent.ReadObject();
            var asymmetricKey = new AsymmetricKeyEntry(ciphrPrivateKey.Private);

            PrivateKeyInfo privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(asymmetricKey.Key);
            var serializedPrivateKey = privateKeyInfo.ToAsn1Object().GetDerEncoded();
            return Convert.ToBase64String(serializedPrivateKey);
        };