加密方法准备测试

2024-08-05 14:41:30 +08:00
parent 9f5b8e9858
commit 99ef28be99
5 changed files with 119 additions and 85 deletions
@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.Crypto.Encodings;
+using Org.BouncyCastle.Crypto.Engines;
+using Org.BouncyCastle.Crypto.Generators;
+using Org.BouncyCastle.OpenSsl;
+using Org.BouncyCastle.Security;
+
+namespace IRaCIS.Core.Application.Helper
+{
+    /// <summary>
+    /// https://www.cnblogs.com/NBDWDYS2214143926/p/13329231.html
+    /// </summary>
+    public class RSAHelper
+    {
+
+        public static AsymmetricCipherKeyPair GenerateRSAKeyPair(int keySize)
+        {
+            var keyGenerationParameters = new KeyGenerationParameters(new SecureRandom(), keySize);
+            var keyPairGenerator = new RsaKeyPairGenerator();
+            keyPairGenerator.Init(keyGenerationParameters);
+            return keyPairGenerator.GenerateKeyPair();
+        }
+
+        public static string ExportPublicKey(AsymmetricKeyParameter publicKey)
+        {
+            using (StringWriter sw = new StringWriter())
+            {
+                PemWriter pw = new PemWriter(sw);
+                pw.WriteObject(publicKey);
+                pw.Writer.Flush();
+                return sw.ToString();
+            }
+        }
+
+        public static string ExportPrivateKey(AsymmetricKeyParameter privateKey)
+        {
+            using (StringWriter sw = new StringWriter())
+            {
+                PemWriter pw = new PemWriter(sw);
+                pw.WriteObject(privateKey);
+                pw.Writer.Flush();
+                return sw.ToString();
+            }
+        }
+
+        /// <summary>
+        /// RSA解密
+        /// </summary>
+        /// <param name="privateKey">私钥</param>
+        /// <param name="decryptstring">待解密的字符串(Base64)</param>
+        /// <returns>解密后的字符串</returns>
+        public static string Decrypt(string privateKey, string decryptstring)
+        {
+            using (TextReader reader = new StringReader(privateKey))
+            {
+                dynamic key = new PemReader(reader).ReadObject();
+                var rsaDecrypt = new Pkcs1Encoding(new RsaEngine());
+                if (key is AsymmetricKeyParameter)
+                {
+                    key = (AsymmetricKeyParameter)key;
+                }
+                else if (key is AsymmetricCipherKeyPair)
+                {
+                    key = ((AsymmetricCipherKeyPair)key).Private;
+                }
+                rsaDecrypt.Init(false, key);  //这里加密是true；解密是false  
+
+                byte[] entData = Convert.FromBase64String(decryptstring);
+                entData = rsaDecrypt.ProcessBlock(entData, 0, entData.Length);
+                return Encoding.UTF8.GetString(entData);
+            }
+        }/// <summary>
+
+         /// 加密
+         /// </summary>
+         /// <param name="publicKey">公钥</param>
+         /// <param name="encryptstring">待加密的字符串</param>
+         /// <returns>加密后的Base64</returns>
+        public static string Encrypt(string publicKey, string encryptstring)
+        {
+            using (TextReader reader = new StringReader(publicKey))
+            {
+                AsymmetricKeyParameter key = new PemReader(reader).ReadObject() as AsymmetricKeyParameter;
+                Pkcs1Encoding pkcs1 = new Pkcs1Encoding(new RsaEngine());
+                pkcs1.Init(true, key);//加密是true；解密是false;
+                byte[] entData = Encoding.UTF8.GetBytes(encryptstring);
+                entData = pkcs1.ProcessBlock(entData, 0, entData.Length);
+                return Convert.ToBase64String(entData);
+            }
+        }
+    }
+}