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798 lines
31 KiB
C#
Executable File
798 lines
31 KiB
C#
Executable File
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Security.Cryptography;
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using System.IO;
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using SDKCSharp.Common;
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namespace SDKCSharp.Utility
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{
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public class AlipaySignature
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{
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/** 默认编码字符集 */
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private static string DEFAULT_CHARSET = SdkConfig.CHARSET;
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public static string GetSignContent(IDictionary<string, string> parameters)
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{
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// 第一步：把字典按Key的字母顺序排序
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IDictionary<string, string> sortedParams = new SortedDictionary<string, string>(parameters);
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IEnumerator<KeyValuePair<string, string>> dem = sortedParams.GetEnumerator();
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// 第二步：把所有参数名和参数值串在一起
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StringBuilder query = new StringBuilder("");
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while (dem.MoveNext())
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{
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string key = dem.Current.Key;
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string value = dem.Current.Value;
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if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value))
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{
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query.Append(key).Append("=").Append(value).Append("&");
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}
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}
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string content = query.ToString().Substring(0, query.Length - 1);
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return content;
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}
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public static string RSASign(IDictionary<string, string> parameters, string privateKeyPem, string charset, string signType)
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{
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string signContent = GetSignContent(parameters);
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return RSASignCharSet(signContent, privateKeyPem, charset, signType);
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}
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public static string RSASign(string data, string privateKeyPem, string charset, string signType)
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{
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return RSASignCharSet(data, privateKeyPem, charset, signType);
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}
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///*
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public static string RSASign(IDictionary<string, string> parameters, string privateKeyPem, string charset, bool keyFromFile, string signType)
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{
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string signContent = GetSignContent(parameters);
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return RSASignCharSet(signContent, privateKeyPem, charset, keyFromFile, signType);
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}
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public static string RSASign(string data, string privateKeyPem, string charset, string signType, bool keyFromFile)
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{
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return RSASignCharSet(data, privateKeyPem, charset, keyFromFile, signType);
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}
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//*/
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public static string RSASignCharSet(string data, string privateKeyPem, string charset, string signType)
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{
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RSACryptoServiceProvider rsaCsp = LoadCertificateFile(privateKeyPem, signType);
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byte[] dataBytes = null;
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if (string.IsNullOrEmpty(charset))
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{
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dataBytes = Encoding.UTF8.GetBytes(data);
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}
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else
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{
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dataBytes = Encoding.GetEncoding(charset).GetBytes(data);
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}
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if ("RSA2".Equals(signType))
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{
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byte[] signatureBytes = rsaCsp.SignData(dataBytes, "SHA256");
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return Convert.ToBase64String(signatureBytes);
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}
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else
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{
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byte[] signatureBytes = rsaCsp.SignData(dataBytes, "SHA1");
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return Convert.ToBase64String(signatureBytes);
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}
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}
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public static string RSASignCharSet(string data, string privateKeyPem, string charset, bool keyFromFile, string signType)
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{
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byte[] signatureBytes = null;
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try
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{
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RSACryptoServiceProvider rsaCsp = null;
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if (keyFromFile)
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{//文件读取
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rsaCsp = LoadCertificateFile(privateKeyPem, signType);
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}
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else
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{
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//字符串获取
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rsaCsp = LoadCertificateString(privateKeyPem, signType);
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}
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byte[] dataBytes = null;
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if (string.IsNullOrEmpty(charset))
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{
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dataBytes = Encoding.UTF8.GetBytes(data);
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}
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else
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{
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dataBytes = Encoding.GetEncoding(charset).GetBytes(data);
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}
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if (null == rsaCsp)
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{
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throw new SopException("您使用的私钥格式错误，请检查RSA私钥配置" + ",charset = " + charset);
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}
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if ("RSA2".Equals(signType))
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{
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signatureBytes = rsaCsp.SignData(dataBytes, "SHA256");
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}
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else
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{
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signatureBytes = rsaCsp.SignData(dataBytes, "SHA1");
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}
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}
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catch (Exception ex)
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{
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throw new SopException("您使用的私钥格式错误，请检查RSA私钥配置" + ",charset = " + charset, ex);
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}
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return Convert.ToBase64String(signatureBytes);
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}
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public static bool RSACheckV1(IDictionary<string, string> parameters, string publicKeyPem, string charset)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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parameters.Remove("sign_type");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, charset, "RSA");
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}
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public static bool RSACheckV1(IDictionary<string, string> parameters, string publicKeyPem)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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parameters.Remove("sign_type");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, DEFAULT_CHARSET, "RSA");
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}
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public static bool RSACheckV1(IDictionary<string, string> parameters, string publicKeyPem, string charset, string signType, bool keyFromFile)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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parameters.Remove("sign_type");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, charset, signType, keyFromFile);
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}
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public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, DEFAULT_CHARSET, "RSA");
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}
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public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem, string charset)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, charset, "RSA");
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}
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public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem, string charset, string signType, bool keyFromFile)
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{
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string sign = parameters["sign"];
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parameters.Remove("sign");
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string signContent = GetSignContent(parameters);
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return RSACheckContent(signContent, sign, publicKeyPem, charset, signType, keyFromFile);
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}
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public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, string signType)
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{
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try
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{
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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if ("RSA2".Equals(signType))
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{
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string sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), "SHA256", Convert.FromBase64String(sign));
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return bVerifyResultOriginal;
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}
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else
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{
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string sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
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bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), sha1, Convert.FromBase64String(sign));
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return bVerifyResultOriginal;
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}
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}
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catch
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{
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return false;
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}
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}
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public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, string signType, bool keyFromFile)
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{
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try
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{
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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string sPublicKeyPEM;
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if (keyFromFile)
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{
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sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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}
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else
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{
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sPublicKeyPEM = "-----BEGIN PUBLIC KEY-----\r\n";
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sPublicKeyPEM += publicKeyPem;
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sPublicKeyPEM += "-----END PUBLIC KEY-----\r\n\r\n";
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}
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if ("RSA2".Equals(signType))
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{
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), "SHA256", Convert.FromBase64String(sign));
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return bVerifyResultOriginal;
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}
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else
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{
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
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bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), sha1, Convert.FromBase64String(sign));
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return bVerifyResultOriginal;
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}
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}
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catch
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{
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return false;
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}
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}
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public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, bool keyFromFile)
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{
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try
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{
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string sPublicKeyPEM;
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if (keyFromFile)
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{
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sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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}
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else
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{
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sPublicKeyPEM = "-----BEGIN PUBLIC KEY-----\r\n";
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sPublicKeyPEM = sPublicKeyPEM + publicKeyPem;
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sPublicKeyPEM = sPublicKeyPEM + "-----END PUBLIC KEY-----\r\n\r\n";
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}
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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bool bVerifyResultOriginal = rsa.VerifyData(Encoding.GetEncoding(charset).GetBytes(signContent), sha1, Convert.FromBase64String(sign));
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return bVerifyResultOriginal;
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}
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catch (Exception ex)
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{
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string s = ex.Message.ToString();
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return false;
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}
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}
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public static string CheckSignAndDecrypt(IDictionary<string, string> parameters, string alipayPublicKey,
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string cusPrivateKey, bool isCheckSign,
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bool isDecrypt)
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{
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string charset = parameters["charset"];
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string bizContent = parameters["biz_content"];
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if (isCheckSign)
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{
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if (!RSACheckV2(parameters, alipayPublicKey, charset))
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{
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throw new SopException("rsaCheck failure:rsaParams=" + parameters);
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}
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}
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if (isDecrypt)
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{
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return RSADecrypt(bizContent, cusPrivateKey, charset, "RSA");
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}
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return bizContent;
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}
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public static string CheckSignAndDecrypt(IDictionary<string, string> parameters, string alipayPublicKey,
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string cusPrivateKey, bool isCheckSign,
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bool isDecrypt, string signType, bool keyFromFile)
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{
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string charset = parameters["charset"];
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string bizContent = parameters["biz_content"];
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if (isCheckSign)
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{
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if (!RSACheckV2(parameters, alipayPublicKey, charset, signType, keyFromFile))
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{
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throw new SopException("rsaCheck failure:rsaParams=" + parameters);
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}
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}
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if (isDecrypt)
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{
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return RSADecrypt(bizContent, cusPrivateKey, charset, signType ,keyFromFile);
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}
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return bizContent;
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}
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public static string encryptAndSign(string bizContent, string alipayPublicKey,
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string cusPrivateKey, string charset, bool isEncrypt,
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bool isSign, string signType, bool keyFromFile)
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{
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StringBuilder sb = new StringBuilder();
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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sb.Append("<?xml version=\"1.0\" encoding=\"" + charset + "\"?>");
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if (isEncrypt)
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{// 加密
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sb.Append("<alipay>");
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String encrypted = RSAEncrypt(bizContent, alipayPublicKey, charset, keyFromFile);
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sb.Append("<response>" + encrypted + "</response>");
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sb.Append("<encryption_type>"+signType+"</encryption_type>");
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if (isSign)
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{
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String sign = RSASign(encrypted, cusPrivateKey, charset, signType, keyFromFile);
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sb.Append("<sign>" + sign + "</sign>");
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sb.Append("<sign_type>"+signType+"</sign_type>");
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}
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sb.Append("</alipay>");
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}
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else if (isSign)
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{// 不加密，但需要签名
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sb.Append("<alipay>");
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sb.Append("<response>" + bizContent + "</response>");
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String sign = RSASign(bizContent, cusPrivateKey, charset, signType, keyFromFile);
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sb.Append("<sign>" + sign + "</sign>");
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sb.Append("<sign_type>"+signType+"</sign_type>");
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sb.Append("</alipay>");
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}
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else
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{// 不加密，不加签
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sb.Append(bizContent);
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}
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return sb.ToString();
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}
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public static string encryptAndSign(string bizContent, string alipayPublicKey,
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string cusPrivateKey, string charset, bool isEncrypt,
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bool isSign)
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{
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StringBuilder sb = new StringBuilder();
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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sb.Append("<?xml version=\"1.0\" encoding=\"" + charset + "\"?>");
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if (isEncrypt)
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{// 加密
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sb.Append("<alipay>");
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String encrypted = RSAEncrypt(bizContent, alipayPublicKey, charset);
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sb.Append("<response>" + encrypted + "</response>");
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sb.Append("<encryption_type>RSA</encryption_type>");
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if (isSign)
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{
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String sign = RSASign(encrypted, cusPrivateKey, charset, "RSA");
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sb.Append("<sign>" + sign + "</sign>");
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sb.Append("<sign_type>RSA</sign_type>");
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}
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sb.Append("</alipay>");
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}
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else if (isSign)
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{// 不加密，但需要签名
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sb.Append("<alipay>");
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sb.Append("<response>" + bizContent + "</response>");
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String sign = RSASign(bizContent, cusPrivateKey, charset, "RSA");
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sb.Append("<sign>" + sign + "</sign>");
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sb.Append("<sign_type>RSA</sign_type>");
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sb.Append("</alipay>");
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}
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else
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{// 不加密，不加签
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sb.Append(bizContent);
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}
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return sb.ToString();
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}
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public static string RSAEncrypt(string content, string publicKeyPem, string charset)
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{
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try
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{
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string sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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byte[] data = Encoding.GetEncoding(charset).GetBytes(content);
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int maxBlockSize = rsa.KeySize / 8 - 11; //加密块最大长度限制
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if (data.Length <= maxBlockSize)
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{
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byte[] cipherbytes = rsa.Encrypt(data, false);
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return Convert.ToBase64String(cipherbytes);
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}
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MemoryStream plaiStream = new MemoryStream(data);
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MemoryStream crypStream = new MemoryStream();
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Byte[] buffer = new Byte[maxBlockSize];
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int blockSize = plaiStream.Read(buffer, 0, maxBlockSize);
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while (blockSize > 0)
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{
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Byte[] toEncrypt = new Byte[blockSize];
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Array.Copy(buffer, 0, toEncrypt, 0, blockSize);
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Byte[] cryptograph = rsa.Encrypt(toEncrypt, false);
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crypStream.Write(cryptograph, 0, cryptograph.Length);
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blockSize = plaiStream.Read(buffer, 0, maxBlockSize);
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}
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return Convert.ToBase64String(crypStream.ToArray(), Base64FormattingOptions.None);
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}
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catch (Exception ex)
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{
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throw new SopException("EncryptContent = " + content + ",charset = " + charset, ex);
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}
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}
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public static string RSAEncrypt(string content, string publicKeyPem, string charset, bool keyFromFile)
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{
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try
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{
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string sPublicKeyPEM;
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if (keyFromFile) {
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sPublicKeyPEM = File.ReadAllText(publicKeyPem);
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}else{
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sPublicKeyPEM = "-----BEGIN PUBLIC KEY-----\r\n";
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sPublicKeyPEM += publicKeyPem;
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sPublicKeyPEM += "-----END PUBLIC KEY-----\r\n\r\n";
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}
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.PersistKeyInCsp = false;
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RSACryptoServiceProviderExtension.LoadPublicKeyPEM(rsa, sPublicKeyPEM);
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if (string.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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byte[] data = Encoding.GetEncoding(charset).GetBytes(content);
|
||
int maxBlockSize = rsa.KeySize / 8 - 11; //加密块最大长度限制
|
||
if (data.Length <= maxBlockSize)
|
||
{
|
||
byte[] cipherbytes = rsa.Encrypt(data, false);
|
||
return Convert.ToBase64String(cipherbytes);
|
||
}
|
||
MemoryStream plaiStream = new MemoryStream(data);
|
||
MemoryStream crypStream = new MemoryStream();
|
||
Byte[] buffer = new Byte[maxBlockSize];
|
||
int blockSize = plaiStream.Read(buffer, 0, maxBlockSize);
|
||
while (blockSize > 0)
|
||
{
|
||
Byte[] toEncrypt = new Byte[blockSize];
|
||
Array.Copy(buffer, 0, toEncrypt, 0, blockSize);
|
||
Byte[] cryptograph = rsa.Encrypt(toEncrypt, false);
|
||
crypStream.Write(cryptograph, 0, cryptograph.Length);
|
||
blockSize = plaiStream.Read(buffer, 0, maxBlockSize);
|
||
}
|
||
|
||
return Convert.ToBase64String(crypStream.ToArray(), Base64FormattingOptions.None);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("EncryptContent = " + content + ",charset = " + charset, ex);
|
||
}
|
||
}
|
||
|
||
public static string RSADecrypt(string content, string privateKeyPem, string charset, string signType)
|
||
{
|
||
try
|
||
{
|
||
RSACryptoServiceProvider rsaCsp = LoadCertificateFile(privateKeyPem, signType);
|
||
if (string.IsNullOrEmpty(charset))
|
||
{
|
||
charset = DEFAULT_CHARSET;
|
||
}
|
||
byte[] data = Convert.FromBase64String(content);
|
||
int maxBlockSize = rsaCsp.KeySize / 8; //解密块最大长度限制
|
||
if (data.Length <= maxBlockSize)
|
||
{
|
||
byte[] cipherbytes = rsaCsp.Decrypt(data, false);
|
||
return Encoding.GetEncoding(charset).GetString(cipherbytes);
|
||
}
|
||
MemoryStream crypStream = new MemoryStream(data);
|
||
MemoryStream plaiStream = new MemoryStream();
|
||
Byte[] buffer = new Byte[maxBlockSize];
|
||
int blockSize = crypStream.Read(buffer, 0, maxBlockSize);
|
||
while (blockSize > 0)
|
||
{
|
||
Byte[] toDecrypt = new Byte[blockSize];
|
||
Array.Copy(buffer, 0, toDecrypt, 0, blockSize);
|
||
Byte[] cryptograph = rsaCsp.Decrypt(toDecrypt, false);
|
||
plaiStream.Write(cryptograph, 0, cryptograph.Length);
|
||
blockSize = crypStream.Read(buffer, 0, maxBlockSize);
|
||
}
|
||
|
||
return Encoding.GetEncoding(charset).GetString(plaiStream.ToArray());
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("DecryptContent = " + content + ",charset = " + charset, ex);
|
||
}
|
||
}
|
||
|
||
public static string RSADecrypt(string content, string privateKeyPem, string charset, string signType, bool keyFromFile)
|
||
{
|
||
try
|
||
{
|
||
RSACryptoServiceProvider rsaCsp = null;
|
||
if (keyFromFile)
|
||
{
|
||
//文件读取
|
||
rsaCsp = LoadCertificateFile(privateKeyPem, signType);
|
||
}
|
||
else
|
||
{
|
||
//字符串获取
|
||
rsaCsp = LoadCertificateString(privateKeyPem, signType);
|
||
}
|
||
if (string.IsNullOrEmpty(charset))
|
||
{
|
||
charset = DEFAULT_CHARSET;
|
||
}
|
||
byte[] data = Convert.FromBase64String(content);
|
||
int maxBlockSize = rsaCsp.KeySize / 8; //解密块最大长度限制
|
||
if (data.Length <= maxBlockSize)
|
||
{
|
||
byte[] cipherbytes = rsaCsp.Decrypt(data, false);
|
||
return Encoding.GetEncoding(charset).GetString(cipherbytes);
|
||
}
|
||
MemoryStream crypStream = new MemoryStream(data);
|
||
MemoryStream plaiStream = new MemoryStream();
|
||
Byte[] buffer = new Byte[maxBlockSize];
|
||
int blockSize = crypStream.Read(buffer, 0, maxBlockSize);
|
||
while (blockSize > 0)
|
||
{
|
||
Byte[] toDecrypt = new Byte[blockSize];
|
||
Array.Copy(buffer, 0, toDecrypt, 0, blockSize);
|
||
Byte[] cryptograph = rsaCsp.Decrypt(toDecrypt, false);
|
||
plaiStream.Write(cryptograph, 0, cryptograph.Length);
|
||
blockSize = crypStream.Read(buffer, 0, maxBlockSize);
|
||
}
|
||
|
||
return Encoding.GetEncoding(charset).GetString(plaiStream.ToArray());
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("DecryptContent = " + content + ",charset = " + charset, ex);
|
||
}
|
||
}
|
||
|
||
private static byte[] GetPem(string type, byte[] data)
|
||
{
|
||
string pem = Encoding.UTF8.GetString(data);
|
||
string header = String.Format("-----BEGIN {0}-----\\n", type);
|
||
string footer = String.Format("-----END {0}-----", type);
|
||
int start = pem.IndexOf(header) + header.Length;
|
||
int end = pem.IndexOf(footer, start);
|
||
string base64 = pem.Substring(start, (end - start));
|
||
|
||
return Convert.FromBase64String(base64);
|
||
}
|
||
|
||
// 加载秘钥文件
|
||
private static RSACryptoServiceProvider LoadCertificateFile(string filename, string signType)
|
||
{
|
||
using (System.IO.FileStream fs = System.IO.File.OpenRead(filename))
|
||
{
|
||
byte[] data = new byte[fs.Length];
|
||
byte[] res = null;
|
||
fs.Read(data, 0, data.Length);
|
||
if (data[0] != 0x30)
|
||
{
|
||
res = GetPem("RSA PRIVATE KEY", data);
|
||
}
|
||
try
|
||
{
|
||
RSACryptoServiceProvider rsa = DecodeRSAPrivateKey(res, signType);
|
||
return rsa;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("LoadCertificateFile fail", ex);
|
||
}
|
||
}
|
||
}
|
||
private static RSACryptoServiceProvider LoadCertificateString(string strKey, string signType)
|
||
{
|
||
byte[] data = null;
|
||
//读取带
|
||
//ata = Encoding.Default.GetBytes(strKey);
|
||
data = Convert.FromBase64String(strKey);
|
||
//data = GetPem("RSA PRIVATE KEY", data);
|
||
try
|
||
{
|
||
RSACryptoServiceProvider rsa = DecodeRSAPrivateKey(data, signType);
|
||
return rsa;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("DecodeRSAPrivateKey fail", ex);
|
||
}
|
||
}
|
||
|
||
private static RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey, string signType)
|
||
{
|
||
byte[] MODULUS, E, D, P, Q, DP, DQ, IQ;
|
||
|
||
// --------- Set up stream to decode the asn.1 encoded RSA private key ------
|
||
MemoryStream mem = new MemoryStream(privkey);
|
||
BinaryReader binr = new BinaryReader(mem); //wrap Memory Stream with BinaryReader for easy reading
|
||
byte bt = 0;
|
||
ushort twobytes = 0;
|
||
int elems = 0;
|
||
try
|
||
{
|
||
twobytes = binr.ReadUInt16();
|
||
if (twobytes == 0x8130) //data read as little endian order (actual data order for Sequence is 30 81)
|
||
binr.ReadByte(); //advance 1 byte
|
||
else if (twobytes == 0x8230)
|
||
binr.ReadInt16(); //advance 2 bytes
|
||
else
|
||
return null;
|
||
|
||
twobytes = binr.ReadUInt16();
|
||
if (twobytes != 0x0102) //version number
|
||
return null;
|
||
bt = binr.ReadByte();
|
||
if (bt != 0x00)
|
||
return null;
|
||
|
||
|
||
//------ all private key components are Integer sequences ----
|
||
elems = GetIntegerSize(binr);
|
||
MODULUS = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
E = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
D = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
P = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
Q = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
DP = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
DQ = binr.ReadBytes(elems);
|
||
|
||
elems = GetIntegerSize(binr);
|
||
IQ = binr.ReadBytes(elems);
|
||
|
||
|
||
// ------- create RSACryptoServiceProvider instance and initialize with public key -----
|
||
CspParameters CspParameters = new CspParameters();
|
||
CspParameters.Flags = CspProviderFlags.UseMachineKeyStore;
|
||
|
||
int bitLen = 1024;
|
||
if ("RSA2".Equals(signType))
|
||
{
|
||
bitLen = 2048;
|
||
}
|
||
|
||
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(bitLen, CspParameters);
|
||
RSAParameters RSAparams = new RSAParameters();
|
||
RSAparams.Modulus = MODULUS;
|
||
RSAparams.Exponent = E;
|
||
RSAparams.D = D;
|
||
RSAparams.P = P;
|
||
RSAparams.Q = Q;
|
||
RSAparams.DP = DP;
|
||
RSAparams.DQ = DQ;
|
||
RSAparams.InverseQ = IQ;
|
||
RSA.ImportParameters(RSAparams);
|
||
return RSA;
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw new SopException("DecodeRSAPrivateKey fail" + ex.Message, ex);
|
||
}
|
||
finally
|
||
{
|
||
binr.Close();
|
||
}
|
||
}
|
||
|
||
private static int GetIntegerSize(BinaryReader binr)
|
||
{
|
||
byte bt = 0;
|
||
byte lowbyte = 0x00;
|
||
byte highbyte = 0x00;
|
||
int count = 0;
|
||
bt = binr.ReadByte();
|
||
if (bt != 0x02) //expect integer
|
||
return 0;
|
||
bt = binr.ReadByte();
|
||
|
||
if (bt == 0x81)
|
||
count = binr.ReadByte(); // data size in next byte
|
||
else
|
||
if (bt == 0x82)
|
||
{
|
||
highbyte = binr.ReadByte(); // data size in next 2 bytes
|
||
lowbyte = binr.ReadByte();
|
||
byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
|
||
count = BitConverter.ToInt32(modint, 0);
|
||
}
|
||
else
|
||
{
|
||
count = bt; // we already have the data size
|
||
}
|
||
|
||
while (binr.ReadByte() == 0x00)
|
||
{ //remove high order zeros in data
|
||
count -= 1;
|
||
}
|
||
binr.BaseStream.Seek(-1, SeekOrigin.Current); //last ReadByte wasn't a removed zero, so back up a byte
|
||
return count;
|
||
}
|
||
}
|
||
}
|
||
|