using System; using System.Text; using System.Security.Cryptography; using System.IO; using System.Security.Cryptography.X509Certificates; using System.Xml; using Org.BouncyCastle.Math; using Org.BouncyCastle.Crypto.Parameters; using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.X509; using Org.BouncyCastle.Security; using Org.BouncyCastle.Asn1.Pkcs; using Org.BouncyCastle.Pkcs; namespace Cn.Vcredit.PayPlatform.Platforms.Support.MSBank.Common { ////// RSA加密解密及RSA签名和验证 /// public static class RSACryption { //RSA 的密钥产生 产生私钥 和公钥 public static void RSAKey(out string xmlKeys, out string xmlPublicKey) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); xmlKeys = rsa.ToXmlString(true); xmlPublicKey = rsa.ToXmlString(false); } //RSA的加密函数 public static byte[] RSAEncrypt(string xmlPublicKey, string m_strEncryptString) { byte[] PlainTextBArray = Encoding.UTF8.GetBytes(m_strEncryptString); RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPublicKey); int bufferSize = (rsa.KeySize / 8) - 11;//单块最大长度 var buffer = new byte[bufferSize]; using (MemoryStream inputStream = new MemoryStream(PlainTextBArray), outputStream = new MemoryStream()) { while (true) { //分段加密 int readSize = inputStream.Read(buffer, 0, bufferSize); if (readSize <= 0) { break; } var temp = new byte[readSize]; Array.Copy(buffer, 0, temp, 0, readSize); var encryptedBytes = rsa.Encrypt(temp, false); outputStream.Write(encryptedBytes, 0, encryptedBytes.Length); } rsa.Dispose(); return outputStream.ToArray();//转化为字节流方便传输 } } //RSA的加密函数 public static string RSAEncrypt(string xmlPublicKey, byte[] EncryptString) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPublicKey); int bufferSize = (rsa.KeySize / 8) - 11;//单块最大长度 var buffer = new byte[bufferSize]; using (MemoryStream inputStream = new MemoryStream(EncryptString), outputStream = new MemoryStream()) { while (true) { //分段加密 int readSize = inputStream.Read(buffer, 0, bufferSize); if (readSize <= 0) { break; } var temp = new byte[readSize]; Array.Copy(buffer, 0, temp, 0, readSize); var encryptedBytes = rsa.Encrypt(temp, false); outputStream.Write(encryptedBytes, 0, encryptedBytes.Length); } rsa.Dispose(); return Convert.ToBase64String(outputStream.ToArray());//转化为字节流方便传输 } } //RSA的解密函数 public static string RSADecrypt(string xmlPrivateKey, string m_strDecryptString) { byte[] PlainTextBArray = Convert.FromBase64String(m_strDecryptString); RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPrivateKey); int bufferSize = rsa.KeySize / 8; var buffer = new byte[bufferSize]; using (MemoryStream inputStream = new MemoryStream(PlainTextBArray), outputStream = new MemoryStream()) { while (true) { int readSize = inputStream.Read(buffer, 0, bufferSize); if (readSize <= 0) { break; } var temp = new byte[readSize]; Array.Copy(buffer, 0, temp, 0, readSize); var rawBytes = rsa.Decrypt(temp, false); outputStream.Write(rawBytes, 0, rawBytes.Length); } rsa.Dispose(); return Encoding.UTF8.GetString(outputStream.ToArray()); } } //RSA的解密函数 public static string RSADecrypt(string xmlPrivateKey, byte[] DecryptString) { //byte[] PlainTextBArray = Convert.FromBase64String(m_strDecryptString); RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); rsa.FromXmlString(xmlPrivateKey); int bufferSize = rsa.KeySize / 8; var buffer = new byte[bufferSize]; using (MemoryStream inputStream = new MemoryStream(DecryptString), outputStream = new MemoryStream()) { while (true) { int readSize = inputStream.Read(buffer, 0, bufferSize); if (readSize <= 0) { break; } var temp = new byte[readSize]; Array.Copy(buffer, 0, temp, 0, readSize); var rawBytes = rsa.Decrypt(temp, false); outputStream.Write(rawBytes, 0, rawBytes.Length); } rsa.Dispose(); return Encoding.UTF8.GetString(outputStream.ToArray()); } } //获取Hash描述表 public static byte[] GetMD5Hash(string m_strSource) { //从字符串中取得Hash描述 byte[] Buffer; HashAlgorithm MD5 = HashAlgorithm.Create("MD5"); Buffer = Encoding.UTF8.GetBytes(m_strSource); return MD5.ComputeHash(Buffer); } //SHA1签名和java中的SHA1withRSA加密是一样的 public static byte[] GetSHA1Hash(string PlainText) { SHA1 sha1Hasher = SHA1.Create(); byte[] data = sha1Hasher.ComputeHash(Encoding.UTF8.GetBytes(PlainText)); return data; } //RSA签名 public static byte[] RSASignData(string p_strKeyPrivate, byte[] HashbyteSignature) { RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPrivate); RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA); //设置签名的算法为MD5 //RSAFormatter.SetHashAlgorithm("MD5"); RSAFormatter.SetHashAlgorithm("SHA1"); //执行签名 byte[] EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); return EncryptedSignatureData; } //签名验证 public static bool RSAVerifySign(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData) { RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.FromXmlString(p_strKeyPublic); RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA); //指定解密的时候HASH算法为MD5 //RSADeformatter.SetHashAlgorithm("MD5"); RSADeformatter.SetHashAlgorithm("SHA1"); if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData)) { return true; } else { return false; } } //先记下了,将来可能有用 //https://social.msdn.microsoft.com/Forums/zh-CN/c39f2298-ffe3-48d9-ad1e-ababa122d229/sha1-with-rsa-in-c?forum=netfxbcl private static string GetRSAHash(string PlainText) { string ResultString = ""; string DigitalCertificateName = "C=IE, O=ad, OU=1234567, CN=f"; X509Store store = new X509Store(StoreName.My, StoreLocation.CurrentUser); store.Open(OpenFlags.ReadOnly); X509CertificateCollection collection = store.Certificates; foreach (System.Security.Cryptography.X509Certificates.X509Certificate cert in collection) { if (cert.Subject == DigitalCertificateName) { CspParameters CspParam; string publicXmlString = string.Empty; string privateXmlString = string.Empty; RSACryptoServiceProvider RsaCsp; RSACryptoServiceProvider RsaCsp2; UnicodeEncoding ByteConverter = new UnicodeEncoding(); CspParam = new CspParameters(); CspParam.KeyContainerName = cert.Subject; ; CspParam.Flags = CspProviderFlags.UseMachineKeyStore; byte[] encryptedString = ByteConverter.GetBytes(PlainText); RsaCsp = new RSACryptoServiceProvider(CspParam); //Get private key privateXmlString = RsaCsp.ToXmlString(true); RsaCsp2 = new RSACryptoServiceProvider(); RsaCsp2.FromXmlString(privateXmlString); encryptedString = RsaCsp2.Encrypt(System.Text.Encoding.Unicode.GetBytes(PlainText), false); ResultString = Convert.ToBase64String(encryptedString); } } store.Close(); return ResultString; } } /// /// java c#密钥互转 /// public static class RSAKeyConvert { /// /// RSA私钥格式转换,java->.net /// /// java生成的RSA私钥 /// public static string RSAPrivateKeyJava2DotNet(string privateKey) { RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey)); return string.Format(" ", 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())); } /// {0} {1} {2}
{3}{4} {5} {6} {7} /// RSA私钥格式转换,.net->java /// /// .net生成的私钥 /// public static string RSAPrivateKeyDotNet2Java(string privateKey) { XmlDocument doc = new XmlDocument(); doc.LoadXml(privateKey); BigInteger m = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("Modulus")[0].InnerText)); BigInteger exp = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("Exponent")[0].InnerText)); BigInteger d = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("D")[0].InnerText)); BigInteger p = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("P")[0].InnerText)); BigInteger q = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("Q")[0].InnerText)); BigInteger dp = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("DP")[0].InnerText)); BigInteger dq = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("DQ")[0].InnerText)); BigInteger qinv = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("InverseQ")[0].InnerText)); RsaPrivateCrtKeyParameters privateKeyParam = new RsaPrivateCrtKeyParameters(m, exp, d, p, q, dp, dq, qinv); PrivateKeyInfo privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(privateKeyParam); byte[] serializedPrivateBytes = privateKeyInfo.ToAsn1Object().GetEncoded(); return Convert.ToBase64String(serializedPrivateBytes); } /// /// RSA公钥格式转换,java->.net /// /// java生成的公钥 /// public static string RSAPublicKeyJava2DotNet(string publicKey) { RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey)); return string.Format(" ", Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()), Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned())); } /// {0} {1} /// RSA公钥格式转换,.net->java /// /// .net生成的公钥 /// public static string RSAPublicKeyDotNet2Java(string publicKey) { XmlDocument doc = new XmlDocument(); doc.LoadXml(publicKey); BigInteger m = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("Modulus")[0].InnerText)); BigInteger p = new BigInteger(1, Convert.FromBase64String(doc.DocumentElement.GetElementsByTagName("Exponent")[0].InnerText)); RsaKeyParameters pub = new RsaKeyParameters(false, m, p); SubjectPublicKeyInfo publicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pub); byte[] serializedPublicBytes = publicKeyInfo.ToAsn1Object().GetDerEncoded(); return Convert.ToBase64String(serializedPublicBytes); } } }