AES加密
發(fā)布日期：2022/11/19 作者：
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using System;using System.Collections.Generic;using System.Linq;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;namespace AESTest{class AES{//public static void Main()//{// string original = "Here is some data to encrypt!";// // Create a new instance of the Aes// // class. This generates a new key and initialization// // vector (IV).// using (Aes myAes = Aes.Create())// {// // Encrypt the string to an array of bytes.// byte[] encrypted = EncryptStringToBytes_Aes(original, myAes.Key, myAes.IV);// // Decrypt the bytes to a string.// string roundtrip = DecryptStringFromBytes_Aes(encrypted, myAes.Key, myAes.IV);// //Display the original data and the decrypted data.// Console.WriteLine("Original: {0}", original);// Console.WriteLine("Round Trip: {0}", roundtrip);// }//}public static byte[] EncryptStringToBytes_Aes(string plainText, byte[] Key, byte[] IV){// Check arguments.if (plainText == null || plainText.Length <= 0)throw new ArgumentNullException("plainText");if (Key == null || Key.Length <= 0)throw new ArgumentNullException("Key");if (IV == null || IV.Length <= 0)throw new ArgumentNullException("IV");byte[] encrypted;// Create an Aes object// with the specified key and IV.using (Aes aesAlg = Aes.Create()){aesAlg.Key = Key;aesAlg.IV = IV;// Create an encryptor to perform the stream transform.ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);// Create the streams used for encryption.using (MemoryStream msEncrypt = new MemoryStream()){using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)){using (StreamWriter swEncrypt = new StreamWriter(csEncrypt)){//Write all data to the stream.swEncrypt.Write(plainText);}encrypted = msEncrypt.ToArray();}}}// Return the encrypted bytes from the memory stream.return encrypted;}public static string DecryptStringFromBytes_Aes(byte[] cipherText, byte[] Key, byte[] IV){// Check arguments.if (cipherText == null || cipherText.Length <= 0)throw new ArgumentNullException("cipherText");if (Key == null || Key.Length <= 0)throw new ArgumentNullException("Key");if (IV == null || IV.Length <= 0)throw new ArgumentNullException("IV");// Declare the string used to hold// the decrypted text.string plaintext = null;// Create an Aes object// with the specified key and IV.using (Aes aesAlg = Aes.Create()){aesAlg.Key = Key;aesAlg.IV = IV;// Create a decryptor to perform the stream transform.ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);// Create the streams used for decryption.using (MemoryStream msDecrypt = new MemoryStream(cipherText)){using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)){using (StreamReader srDecrypt = new StreamReader(csDecrypt)){// Read the decrypted bytes from the decrypting stream// and place them in a string.plaintext = srDecrypt.ReadToEnd();}}}}return plaintext;}}}
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