58 lines
2.1 KiB
C#
58 lines
2.1 KiB
C#
using System.IO;
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using System.Security.Cryptography;
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using Newtonsoft.Json;
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namespace ZhiZhun.AuthenticationCenter.Utility.RSA
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{
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public class RSAHelper
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{
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/// <summary>
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/// 从本地文件中读取用来签发 Token 的 RSA Key
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/// </summary>
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/// <param name="filePath">存放密钥的文件夹路径</param>
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/// <param name="withPrivate"></param>
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/// <param name="keyParameters"></param>
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/// <returns></returns>
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public static bool TryGetKeyParameters(string filePath, bool withPrivate, out RSAParameters keyParameters)
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{
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string filename = withPrivate ? "key.json" : "key.public.json";
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string fileTotalPath = Path.Combine(filePath, filename);
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keyParameters = default(RSAParameters);
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if (!File.Exists(fileTotalPath))
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{
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return false;
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}
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else
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{
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keyParameters = JsonConvert.DeserializeObject<RSAParameters>(File.ReadAllText(fileTotalPath));
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return true;
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}
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}
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/// 生成并保存 RSA 公钥与私钥
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/// <param name="filePath">存放密钥的文件夹路径</param>
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/// <param name="withPrivate"></param>
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/// <returns></returns>
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public static RSAParameters GenerateAndSaveKey(string filePath, bool withPrivate = true)
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{
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RSAParameters publicKeys, privateKeys;
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using (var rsa = new RSACryptoServiceProvider(2048))//即时生成
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{
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try
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{
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privateKeys = rsa.ExportParameters(true);
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publicKeys = rsa.ExportParameters(false);
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}
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finally
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{
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rsa.PersistKeyInCsp = false;
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}
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}
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File.WriteAllText(Path.Combine(filePath, "key.json"), JsonConvert.SerializeObject(privateKeys));
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File.WriteAllText(Path.Combine(filePath, "key.public.json"), JsonConvert.SerializeObject(publicKeys));
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return withPrivate ? privateKeys : publicKeys;
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}
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}
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}
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