.NET core RSA帮助类

public class RSAHelper ???{ ???????/// <summary> ???????/// 私钥签名 ???????/// </summary> ???????/// <param name="signStr"></param> ???????/// <param name="privateKey"></param> ???????/// <returns></returns> ???????public static string RSASign(string signStr, string privateKey) ???????{ ???????????try ???????????{ ???????????????//// net ???????????????//var rsa = new RSACryptoServiceProvider(); ???????????????//rsa.FromXmlString(privateKey); ???????????????//byte[] signBytes = rsa.SignData(UTF8Encoding.UTF8.GetBytes(signStr), "md5"); ???????????????//return Convert.ToBase64String(signBytes); ???????????????// net core 2.0 ???????????????var rsa = RSA.Create(); ???????????????rsa.FromXmlStringExtensions(privateKey); ???????????????byte[] bytes = rsa.SignData(UTF8Encoding.UTF8.GetBytes(signStr), HashAlgorithmName.MD5, RSASignaturePadding.Pkcs1); ???????????????return Convert.ToBase64String(bytes); ???????????} ???????????catch (Exception e) ???????????{ ???????????????throw e; ???????????} ???????} ???????/// <summary> ???????/// 公钥签名 ???????/// </summary> ???????/// <param name="encrypt_info"></param> ???????/// <param name="publicKey"></param> ???????/// <returns></returns> ???????public static string RSAEncrypt(string strEncryptInfo, string publicKey) ???????{ ???????????try ???????????{ ???????????????//// net ???????????????//RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); ???????????????//rsa.FromXmlString(strPublicKey); ???????????????//byte[] bytes = rsa.Encrypt(UTF8Encoding.UTF8.GetBytes(strEncryptInfo), false); ???????????????//return Convert.ToBase64String(bytes); ???????????????// net core 2.0 ???????????????var rsa = RSA.Create(); ???????????????publicKey = RSAPublicKeyJava2DotNet(publicKey); ???????????????rsa.FromXmlStringExtensions(publicKey); ???????????????byte[] bytes = rsa.Encrypt(UTF8Encoding.UTF8.GetBytes(strEncryptInfo), RSAEncryptionPadding.Pkcs1); ???????????????return Convert.ToBase64String(bytes); ???????????} ???????????catch (Exception e) ???????????{ ???????????????throw e; ???????????} ???????} ???????/// <summary> ???????/// RSA私钥格式转换 ???????/// </summary> ???????/// <param name="privateKey"></param> ???????/// <returns></returns> ???????public static string RSAPrivateKeyJava2DotNet(string privateKey) ???????{ ???????????if (string.IsNullOrEmpty(privateKey)) ???????????{ ???????????????return string.Empty; ???????????} ???????????RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey)); ???????????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(privateKeyParam.Modulus.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()) ???????????); ???????} ???????/// <summary> ???????/// RSA公钥格式转换 ???????/// </summary> ???????/// <param name="publicKey"></param> ???????/// <returns>格式转换结果</returns> ???????public static string RSAPublicKeyJava2DotNet(string publicKey) ???????{ ???????????if (string.IsNullOrEmpty(publicKey)) ???????????{ ???????????????return string.Empty; ???????????} ???????????RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey)); ???????????return string.Format( ???????????????"<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>", ???????????????Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()), ???????????????Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()) ???????????); ???????} ???????/// <summary> ???????/// 公钥验签 ???????/// </summary> ???????/// <param name="plainText"></param> ???????/// <param name="publicKey"></param> ???????/// <param name="signedData"></param> ???????/// <returns></returns> ???????public static bool ValidateRsaSign(string plainText, string publicKey, string signedData) ???????{ ???????????try ???????????{ ???????????????//// net ???????????????//RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); ???????????????//rsa.FromXmlString(publicKey); ???????????????//return rsa.VerifyData(UTF8Encoding.UTF8.GetBytes(plainText), "md5", Convert.FromBase64String(signedData)); ???????????????//// net core 2.0 ???????????????var rsa = RSA.Create(); ???????????????rsa.FromXmlStringExtensions(publicKey); ???????????????return rsa.VerifyData(UTF8Encoding.UTF8.GetBytes(plainText), Convert.FromBase64String(signedData), HashAlgorithmName.MD5, RSASignaturePadding.Pkcs1); ???????????} ???????????catch (Exception e) ???????????{ ???????????????throw e; ???????????} ???????} ???} ???/// <summary> ???/// System.Security.Cryptography.RSA 扩展方法 ???/// </summary> ???internal static class RSAExtensions ???{ ???????// 处理 下面两种方式都会出现的 Operation is not supported on this platform 异常 ???????// RSA.Create().FromXmlString(privateKey) ????????// new RSACryptoServiceProvider().FromXmlString(privateKey) ????????/// <summary> ???????/// 扩展FromXmlString ???????/// </summary> ???????/// <param name="rsa"></param> ???????/// <param name="xmlString"></param> ???????public static void FromXmlStringExtensions(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 = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "Exponent": parameters.Exponent = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "P": parameters.P = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "Q": parameters.Q = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "DP": parameters.DP = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "DQ": parameters.DQ = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "InverseQ": parameters.InverseQ = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????????case "D": parameters.D = (string.IsNullOrEmpty(node.InnerText) ? null : Convert.FromBase64String(node.InnerText)); break; ???????????????????} ???????????????} ???????????} ???????????else ???????????{ ???????????????throw new Exception("Invalid XML RSA key."); ???????????} ???????????rsa.ImportParameters(parameters); ???????} ???????/// <summary> ???????/// 扩展ToXmlString ???????/// </summary> ???????/// <param name="rsa"></param> ???????/// <param name="includePrivateParameters"></param> ???????/// <returns></returns> ???????public static string ToXmlStringExtensions(this RSA rsa, bool includePrivateParameters) ???????{ ???????????RSAParameters parameters = rsa.ExportParameters(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>", ?????????????????parameters.Modulus != null ? Convert.ToBase64String(parameters.Modulus) : null, ?????????????????parameters.Exponent != null ? Convert.ToBase64String(parameters.Exponent) : null, ?????????????????parameters.P != null ? Convert.ToBase64String(parameters.P) : null, ?????????????????parameters.Q != null ? Convert.ToBase64String(parameters.Q) : null, ?????????????????parameters.DP != null ? Convert.ToBase64String(parameters.DP) : null, ?????????????????parameters.DQ != null ? Convert.ToBase64String(parameters.DQ) : null, ?????????????????parameters.InverseQ != null ? Convert.ToBase64String(parameters.InverseQ) : null, ?????????????????parameters.D != null ? Convert.ToBase64String(parameters.D) : null); ???????} ???????????}