Unity SKFramework框架（二十五）、RSA算法加密、签名工具 RSA Crypto
【摘要】
目录
简介
函数
1.pem公钥内容转xml
2.pem私钥内容转xml
3.使用公钥对数据进行加密
4.使用私匙对待签名内容进行签名
示例
简介
在调用Java后端接口，需要使用后端提供的pem私钥，在Unity中使用RSA算法对参数进行签名时，需要先将pem文件中的私钥内容转换为c#支持的xm...
目录
简介
在调用Java后端接口，需要使用后端提供的pem私钥，在Unity中使用RSA算法对参数进行签名时，需要先将pem文件中的私钥内容转换为c#支持的xml格式再进行签名，该工具提供了转换及签名的函数，已上传至我的开发框架SKFramework中的开发工具包中，如图所示：
依赖第三方库：BouncyCastle.Crypto.dll
SKFramework开源地址：
https://github.com/136512892/SKFramework
函数
1.pem公钥内容转xml
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/// <summary>
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/// pem公钥内容转xml
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/// </summary>
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/// <param name="publicKey"></param>
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/// <returns></returns>
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public static string Convert2XMLPublicKey(string pem)
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{
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RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(pem));
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string XML = string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>",
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Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()),
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Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()));
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return XML;
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}
2.pem私钥内容转xml
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/// <summary>
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/// pem私钥内容转xml
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/// </summary>
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/// <param name="pem">pem私钥内容</param>
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/// <returns></returns>
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public static string Convert2XMLPrivateKey(string pem)
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{
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RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(pem));
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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>",
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Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()),
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Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()));
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}
3.使用公钥对数据进行加密
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/// <summary>
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/// RSA使用公钥对数据加密
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/// </summary>
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/// <param name="content">待加密内容</param>
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/// <param name="publicKeyXml">公钥</param>
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/// <returns></returns>
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public static string EncryptWithPublicKey(string content, string publicKeyXml)
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{
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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byte[] cipherbytes;
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rsa.FromXmlString(publicKeyXml);
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cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
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return Convert.ToBase64String(cipherbytes);
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}
4.使用私匙对待签名内容进行签名
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/// <summary>
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/// RSA使用私匙对签名内容加签名
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/// </summary>
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/// <param name="sign">代签名内容</param>
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/// <param name="privateKeyXml">私钥</param>
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/// <param name="hashAlgorithm">哈希算法 默认为SHA256</param>
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/// <returns></returns>
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public static byte[] SignWithPrivateKey(string sign, string privateKeyXml, string hashAlgorithm = "SHA256")
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{
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RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
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rsa.FromXmlString(privateKeyXml);
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byte[] dataBytes = Encoding.UTF8.GetBytes(sign);
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byte[] hashbyteSignature = rsa.SignData(dataBytes, hashAlgorithm);
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return hashbyteSignature;
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}
示例
要求：
将pem文件中的私钥内容Copy下来，需要去除首行和尾行的内容，即“-----BEGIN PRIVATE KEY-----”和“-----END PRIVATE KEY-----”：
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using System;
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using System.Text;
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using System.Collections;
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using System.Security.Cryptography;
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using System.Runtime.InteropServices;
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using BestHTTP.WebSocket;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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using UnityEngine;
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using Newtonsoft.Json;
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using SK.Framework.Crypto;
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/// <summary>
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/// 灵犀云会议字幕流接口Demo
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/// </summary>
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public class SubtitleExample : MonoBehaviour
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{
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//ws
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private WebSocket webSocket;
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//地址
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[SerializeField] private string host;
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//业务码ID 由字幕系统提供
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[SerializeField] private string buCode;
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//秘钥 与buCode同时提供
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[SerializeField] private string secret;
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//固定值 目前为1.0
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[SerializeField] private string signVersion = "1.0";
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//约定的appid 校验用
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[SerializeField] private string appid;
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//私钥 用于根据RSA签名算法得到签名字符串
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[SerializeField, TextArea]
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private string privateKey;
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//会话ID
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private string sid;
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#region >> WebSocket回调
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//ws建立连接回调
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private void OnOpen(WebSocket ws)
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{
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Debug.Log("WebSocket Open.");
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}
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//ws接收数据回调
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private void OnMessageReceived(WebSocket ws, string message)
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{
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Debug.Log(string.Format("WebSocket Received: {0}.", message));
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}
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//ws关闭连接回调
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private void OnClosed(WebSocket ws, UInt16 code, string message)
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{
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Debug.Log(string.Format("WebSocket Closed. Code:{0} Message:{1}.", code, message));
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webSocket = null;
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}
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//ws发生错误回调
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private void OnError(WebSocket ws, string error)
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{
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Debug.LogError(string.Format("WebSocket Error: {0}.", error));
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}
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#endregion
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//十六进制
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private string ByteToHex(byte[] data)
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{
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string hs = string.Empty;
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for (int i = 0; i < data.Length; i++)
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{
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string temp = Convert.ToString(data[i], 16);
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hs = temp.Length == 1 ? (hs + "0" + temp) : (hs + temp);
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}
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return hs.ToUpper();
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}
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private void OnGUI()
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{
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GUI.enabled = webSocket == null;
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if (GUILayout.Button("Open", GUILayout.Width(200f), GUILayout.Height(50f)))
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{
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//请求url
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string url = string.Format("{0}/subtitle/ws/connect", host);
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//时间戳
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TimeSpan ts = DateTime.Now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, 0);
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long timestamp = Convert.ToInt64(ts.TotalMilliseconds);
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//Int32随机数
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string signNonce = UnityEngine.Random.Range(Int32.MinValue, Int32.MaxValue).ToString();
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//待签名内容
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string signContent = string.Format("buCode={0}&secret={1}×tamp={2}&signNonce={3}&signVersion={4}&appid={5}",
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buCode, secret, timestamp, signNonce, signVersion, appid);
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Debug.Log(string.Format("待签名内容：{0}", signContent));
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//签名
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string sign = ByteToHex(RSACrypto.SignWithPrivateKey(signContent, RSACrypto.Convert2XMLPrivateKey(privateKey)));
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Debug.Log(string.Format("签名: {0}", sign));
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//最终请求地址
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string address = string.Format("{0}?lang={1}&codec={2}&appid={3}&extend={4}&buCode={5}×tamp={6}&signNonce={7}&signVersion={8}&sign={9}&appid={10}",
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url, "cn", "speex", appid, "", buCode, timestamp, signNonce, signVersion, sign, appid);
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Debug.Log(string.Format("Uri: {0}", address));
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webSocket = new WebSocket(new Uri(address));
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webSocket.OnOpen += OnOpen;
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webSocket.OnMessage += OnMessageReceived;
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webSocket.OnClosed += OnClosed;
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webSocket.OnError += OnError;
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webSocket.Open();
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}
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}
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}
文章来源: coderz.blog.csdn.net，作者：CoderZ1010，版权归原作者所有，如需转载，请联系作者。
原文链接：coderz.blog.csdn.net/article/details/125874937
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