.net core使用RSA

今天药忘吃喽~ 2023-10-11 10:47 37阅读 0赞

转自： https://www.jianshu.com/p/f22b4e565ec1

从原来framework下的代码搬过来，结果不能用。原来的代码

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                byte[] cipherbytes;
                rsa.FromXmlString(privatekey);
                cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);
    
                return Encoding.UTF8.GetString(cipherbytes);

报错 FromXmlString 这个方法在环境下不可用。

百度看到开头链接文章，扩展两个方法 ，当然只用到 fromxmlstring

public static void FromXmlString(this RSA rsa, string xmlString)
            {
                RSAParameters parameters = new RSAParameters();
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(xmlString);
                if (xmlDoc.DocumentElement.Name.Equals("RSAKeyValue"))
                {
                    foreach (XmlNode node in xmlDoc.DocumentElement.ChildNodes)
                    {
                        switch (node.Name)
                        {
                            case "Modulus": parameters.Modulus = Convert.FromBase64String(node.InnerText); break;
                            case "Exponent": parameters.Exponent = Convert.FromBase64String(node.InnerText); break;
                            case "P": parameters.P = Convert.FromBase64String(node.InnerText); break;
                            case "Q": parameters.Q = Convert.FromBase64String(node.InnerText); break;
                            case "DP": parameters.DP = Convert.FromBase64String(node.InnerText); break;
                            case "DQ": parameters.DQ = Convert.FromBase64String(node.InnerText); break;
                            case "InverseQ": parameters.InverseQ = Convert.FromBase64String(node.InnerText); break;
                            case "D": parameters.D = Convert.FromBase64String(node.InnerText); break;
                        }
                    }
                }
                else
                {
                    throw new Exception("Invalid XML RSA key.");
                }
    
                rsa.ImportParameters(parameters);
            }
    
            public static string ToXmlString(this RSA rsa, bool includePrivateParameters)
            {
                RSAParameters parameters = rsa.ExportParameters(includePrivateParameters);
    
                if (includePrivateParameters)
                {
                    return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent><P>{2}</P><Q>{3}</Q><DP>{4}</DP><DQ>{5}</DQ><InverseQ>{6}</InverseQ><D>{7}</D></RSAKeyValue>",
                        Convert.ToBase64String(parameters.Modulus),
                        Convert.ToBase64String(parameters.Exponent),
                        Convert.ToBase64String(parameters.P),
                        Convert.ToBase64String(parameters.Q),
                        Convert.ToBase64String(parameters.DP),
                        Convert.ToBase64String(parameters.DQ),
                        Convert.ToBase64String(parameters.InverseQ),
                        Convert.ToBase64String(parameters.D));
                }
                return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>",
                        Convert.ToBase64String(parameters.Modulus),
                        Convert.ToBase64String(parameters.Exponent));
            }

然后

var privateKeyRsaProvider = RSA.Create();
                privateKeyRsaProvider.FromXmlStringEx(privatekey);
                var r= Encoding.UTF8.GetString(privateKeyRsaProvider.Decrypt(Convert.FromBase64String(content), RSAEncryptionPadding.Pkcs1));
                return r;

搞定。

[FromXmlString][] [详细][Link 1]  X

没有英汉互译结果  
[请尝试网页搜索][Link 1]

转载于:https://www.cnblogs.com/jzz228/p/11337884.html

[FromXmlString]: http://dict.youdao.com/search?q=FromXmlString&keyfrom=chrome.extension
[Link 1]: http://www.youdao.com/search?q=FromXmlString&ue=utf8&keyfrom=chrome.extension