UWP：AES加密和解密

我有一个简单的类来为Windows Phone 8做一些基本的本地加密。我想在Windows Store的新UWP Windows 10应用程序中再次使用该类。 不幸的是我不能再使用AesManaged类了。

我试图使用Windows.Security.Cryptography.Core ，但我完全卡住了。 这是我用于Windows Phone 8的原始类。我必须在互联网上的某个地方找到它。

 using System.Security.Cryptography; namespace TestGame { public class AesEnDecryption { private string AES_Key = "MYLiSQ864FhDevJOeMs9EVp5RmfC7OuH"; private string AES_IV = "FoL5Tyd9sZclVn5A"; public string AES_encrypt(string Input) { var aes = new AesManaged(); aes.KeySize = 128; aes.BlockSize = 128; aes.Key = Convert.FromBase64String(AES_Key); aes.IV = Encoding.UTF8.GetBytes(AES_IV); var encrypt = aes.CreateEncryptor(aes.Key, aes.IV); byte[] xBuff = null; using (var ms = new MemoryStream()) { using (var cs = new CryptoStream(ms, encrypt, CryptoStreamMode.Write)) { byte[] xXml = Encoding.UTF8.GetBytes(Input); cs.Write(xXml, 0, xXml.Length); } xBuff = ms.ToArray(); } string Output = Convert.ToBase64String(xBuff); return Output; } public string AES_decrypt(string Input) { var aes = new AesManaged(); aes.KeySize = 128; aes.BlockSize = 128; aes.Key = Convert.FromBase64String(AES_Key); aes.IV = Encoding.UTF8.GetBytes(AES_IV); var decrypt = aes.CreateDecryptor(); byte[] xBuff = null; using (var ms = new MemoryStream()) { using (var cs = new CryptoStream(ms, decrypt, CryptoStreamMode.Write)) { byte[] xXml = Convert.FromBase64String(Input); cs.Write(xXml, 0, xXml.Length); } xBuff = ms.ToArray(); } string Output = Encoding.UTF8.GetString(xBuff, 0, xBuff.Length); return Output; } } } 

有人知道如何为UWP Windows 10应用程序翻译这个吗？

谢谢！

Answer 1

您需要阅读有关SymmetricAlgorithmProvider和CryptographicEngine的文档。

我这里有一个小例子，如何一起使用这些：

 using System; using System.Linq; using System.Runtime.InteropServices.WindowsRuntime; using System.Text; using Windows.Security.Cryptography; using Windows.Security.Cryptography.Core; using Windows.Storage.Streams; namespace CryptTest { public class AesEnDecryption { // Key with 256 and IV with 16 length private string AES_Key = "Y+3xQDLPWalRKK3U/JuabsJNnuEO91zRiOH5gjgOqck="; private string AES_IV = "15CV1/ZOnVI3rY4wk4INBg=="; private IBuffer m_iv = null; private CryptographicKey m_key; public AesEnDecryption() { IBuffer key = Convert.FromBase64String(AES_Key).AsBuffer(); m_iv = Convert.FromBase64String(AES_IV).AsBuffer(); SymmetricKeyAlgorithmProvider provider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7); m_key = provider.CreateSymmetricKey(key); } public byte[] Encrypt(byte[] input) { IBuffer bufferMsg = CryptographicBuffer.ConvertStringToBinary(Encoding.ASCII.GetString(input), BinaryStringEncoding.Utf8); IBuffer bufferEncrypt = CryptographicEngine.Encrypt(m_key, bufferMsg, m_iv); return bufferEncrypt.ToArray(); } public byte[] Decrypt(byte[] input) { IBuffer bufferDecrypt = CryptographicEngine.Decrypt(m_key, input.AsBuffer(), m_iv); return bufferDecrypt.ToArray(); } } } 

如果要使用另一个算法，然后使用AesCbcPkcs7 ，则必须更改SymmetricAlgorithmName

Answer 2

更清洁的代码

  public static async Task EncryptAesFileAsync(StorageFile fileForEncryption, string aesKey256, string iv16lenght) { bool success = false; try { //Initialize key IBuffer key = Convert.FromBase64String(aesKey256).AsBuffer(); var m_iv = Convert.FromBase64String(iv16lenght).AsBuffer(); SymmetricKeyAlgorithmProvider provider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7); var m_key = provider.CreateSymmetricKey(key); //secured data IBuffer data = await FileIO.ReadBufferAsync(fileForEncryption); IBuffer SecuredData = CryptographicEngine.Encrypt(m_key, data, m_iv); await FileIO.WriteBufferAsync(fileForEncryption, SecuredData); success = true; } catch (Exception ex) { success = false; DialogHelper.DisplayMessageDebug(ex); } return success; } public static async Task DecryptAesFileAsync(StorageFile EncryptedFile, string aesKey256, string iv16lenght) { bool success = false; try { //Initialize key IBuffer key = Convert.FromBase64String(aesKey256).AsBuffer(); var m_iv = Convert.FromBase64String(iv16lenght).AsBuffer(); SymmetricKeyAlgorithmProvider provider = SymmetricKeyAlgorithmProvider.OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7); var m_key = provider.CreateSymmetricKey(key); //Unsecured Data IBuffer data = await FileIO.ReadBufferAsync(EncryptedFile); IBuffer UnSecuredData = CryptographicEngine.Decrypt(m_key, data, m_iv); await FileIO.WriteBufferAsync(EncryptedFile, UnSecuredData); success = true; } catch (Exception ex) { success = false; DialogHelper.DisplayMessageDebug(ex); } return success; }