104 lines
3.7 KiB
C#
104 lines
3.7 KiB
C#
using Furion;
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using Furion.FriendlyException;
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using Org.BouncyCastle.Asn1.X509;
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using Org.BouncyCastle.Crypto.Parameters;
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using Org.BouncyCastle.Math;
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using Org.BouncyCastle.X509;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace Ewide.Core.Util
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{
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public static class RSAHandler
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{
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/// <summary>
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/// XML 文件转成PEM 公钥格式
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/// </summary>
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/// <param name="xml"></param>
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/// <param name="saveFile"></param>
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/// <returns></returns>
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public static string Xml2PemPublic(string xml, string saveFile)
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{
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var rsa = new RSACryptoServiceProvider();
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rsa.FromXmlString(xml); var p = rsa.ExportParameters(false);
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RsaKeyParameters key = new RsaKeyParameters(false, new BigInteger(1, p.Modulus), new BigInteger(1, p.Exponent)); using (var sw = new StreamWriter(saveFile))
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{
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var pemWriter = new Org.BouncyCastle.OpenSsl.PemWriter(sw);
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pemWriter.WriteObject(key);
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}
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SubjectPublicKeyInfo publicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(key); byte[] serializedPublicBytes = publicKeyInfo.ToAsn1Object().GetDerEncoded();
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string publicKey = Convert.ToBase64String(serializedPublicBytes);
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return Format(publicKey, 1);
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}
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/// <summary>
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/// 格式化
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/// </summary>
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/// <param name="key"></param>
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/// <param name="type"></param>
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/// <returns></returns>
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public static string Format(string key, int type)
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{
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string result = string.Empty;
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int length = key.Length / 64;
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for (int i = 0; i < length; i++)
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{
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int start = i * 64;
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result = result + key.Substring(start, 64) + "\r\n";
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}
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result = result + key.Substring(length * 64);
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if (type == 1)
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{
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result = result.Insert(0, "-----BEGIN PUBLIC KEY-----\r\n");
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result += "\r\n-----END PUBLIC KEY-----";
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}
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if (type == 2)
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{
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result = result.Insert(0, "-----BEGIN PRIVATE KEY-----\r\n");
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result += "\r\n-----END PRIVATE KEY-----";
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}
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return result;
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}
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/// <summary>
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/// RSA加密 公钥
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/// </summary>
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/// <param name="content"></param>
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/// <returns></returns>
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public static string RSAEncrypt(string content)
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{
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string publickey = App.Configuration["RSA:publickey"];
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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byte[] cipherbytes;
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rsa.FromXmlString(publickey);
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cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
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return Convert.ToBase64String(cipherbytes);
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}
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/// <summary>
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/// RSA解密 私钥
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/// </summary>
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/// <param name="content"></param>
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/// <returns></returns>
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public static string RSADecrypt(string content)
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{
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string privatekey = App.Configuration["RSA:privatekey"];
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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byte[] cipherbytes;
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try
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{ //很有可能是报文被修改 情况很小
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rsa.FromXmlString(privatekey);
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cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);
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return Encoding.UTF8.GetString(cipherbytes);
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}
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catch
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{
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throw Oops.Oh(ErrorCode.D1000);
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}
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}
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}
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}
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