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74 lines
2.8 KiB
74 lines
2.8 KiB
using System;
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using System.Security.Cryptography;
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using System.Text;
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using BWP.ABCClient.Common;
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namespace BWP.ABCClient
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{
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public static class RSAService
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{
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public static void Sign(MessageBase msgObj, string merchantID, Encoding msgEncoding, bool isMarket)
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{
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string xml = MsgUtil.MsgToBareXml(msgObj);
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var message = MsgUtil.GetInnerXml(xml, "Message");
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message = isMarket ? string.Format("<Message>{0}</Message>", message) : message;
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msgObj.Signature = Sign(message, merchantID, msgEncoding);
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}
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public static string Sign(string msg, string merchantID)
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{
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return Sign(msg, merchantID, Encoding.Default);
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}
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public static string Sign(string msg, string merchantID, Encoding msgEncoding)
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{
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var cert = new CertManager().Fetch(merchantID);
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var privateKey = (RSACryptoServiceProvider)cert.PrivateKey;
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if (privateKey == null)
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{
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throw new Exception("商户的证书中没有私钥，请上传有效的证书");
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}
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byte[] rgbHash = new SHA1Managed().ComputeHash(msgEncoding.GetBytes(msg));
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byte[] data = privateKey.SignHash(rgbHash, cert.SignatureAlgorithm.Value);
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return Convert.ToBase64String(data);
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}
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public static bool Verify(string returnMsg, string abcSign)
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{
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return Verify(returnMsg, abcSign, Encoding.Default, false);
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}
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public static bool Verify(string returnMsg, string abcSign, Encoding msgEncoding, bool isTest)
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{
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var certMgr = new CertManager();
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var cert = isTest ? certMgr.GetABCTestPubKey() : certMgr.GetABCPubKey();
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var publicKey = (RSACryptoServiceProvider)cert.PublicKey.Key;
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var singature = Convert.FromBase64String(abcSign);
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var msgHash = new SHA1Managed().ComputeHash(msgEncoding.GetBytes(returnMsg));
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return publicKey.VerifyHash(msgHash, cert.SignatureAlgorithm.Value, singature);
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}
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public static bool Verify(string receivedXml, Encoding msgEncoding, bool isMarket, bool isTest)
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{
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string message = MsgUtil.GetInnerXml(receivedXml, "Message");
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message = isMarket ? string.Format("<Message>{0}</Message>", message) : message;
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string signature = MsgUtil.GetInnerXml(receivedXml, "Signature");
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return Verify(message, signature, msgEncoding, isTest);
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}
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public static bool TestVerify(string returnMsg, string abcSign)
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{
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return TestVerify(returnMsg, abcSign, Encoding.Default);
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}
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public static bool TestVerify(string returnMsg, string abcSign, Encoding msgEncoding)
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{
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var cert = new CertManager().GetABCTestPubKey();
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var publicKey = (RSACryptoServiceProvider)cert.PublicKey.Key;
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var singature = Convert.FromBase64String(abcSign);
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var msgHash = new SHA1Managed().ComputeHash(msgEncoding.GetBytes(returnMsg));
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return publicKey.VerifyHash(msgHash, cert.SignatureAlgorithm.Value, singature);
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}
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}
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}
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