/trunk/Winify/Utilities/AES.cs |
@@ -28,34 +28,26 @@ |
/////////////////////////////////////////////////////////////////////////// |
public static async Task<byte[]> Encrypt(byte[] plain, string password) |
{ |
using (var rijndael = Rijndael.Create()) |
{ |
rijndael.BlockSize = 128; |
rijndael.Mode = CipherMode.CBC; |
rijndael.KeySize = 256; |
rijndael.Padding = PaddingMode.PKCS7; |
var salt = new byte[AESKeySaltBytes]; |
Rng.GetBytes(salt); |
using (var pdb = new Rfc2898DeriveBytes(password, salt, 1000)) |
{ |
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8); |
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8); |
using var rijndael = Rijndael.Create(); |
rijndael.BlockSize = 128; |
rijndael.Mode = CipherMode.CBC; |
rijndael.KeySize = 256; |
rijndael.Padding = PaddingMode.PKCS7; |
var salt = new byte[AESKeySaltBytes]; |
Rng.GetBytes(salt); |
using var pdb = new Rfc2898DeriveBytes(password, salt, 1000); |
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8); |
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8); |
|
using (var memoryStream = new MemoryStream()) |
{ |
using (var cryptoStream = |
new CryptoStream(memoryStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write)) |
{ |
await cryptoStream.WriteAsync(plain, 0, plain.Length); |
cryptoStream.Close(); |
using var memoryStream = new MemoryStream(); |
using var cryptoStream = |
new CryptoStream(memoryStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write); |
await cryptoStream.WriteAsync(plain, 0, plain.Length); |
cryptoStream.Close(); |
|
var ciphertext = memoryStream.ToArray(); |
var ciphertext = memoryStream.ToArray(); |
|
return salt.Concat(ciphertext).ToArray(); |
} |
} |
} |
} |
return salt.Concat(ciphertext).ToArray(); |
} |
|
/////////////////////////////////////////////////////////////////////////// |
@@ -63,35 +55,27 @@ |
/////////////////////////////////////////////////////////////////////////// |
public static async Task<byte[]> Decrypt(byte[] cipher, string password) |
{ |
using (var rijndael = Rijndael.Create()) |
{ |
rijndael.BlockSize = 128; |
rijndael.Mode = CipherMode.CBC; |
rijndael.KeySize = 256; |
rijndael.Padding = PaddingMode.PKCS7; |
using var rijndael = Rijndael.Create(); |
rijndael.BlockSize = 128; |
rijndael.Mode = CipherMode.CBC; |
rijndael.KeySize = 256; |
rijndael.Padding = PaddingMode.PKCS7; |
|
var salt = cipher.Take(AESKeySaltBytes).ToArray(); |
var salt = cipher.Take(AESKeySaltBytes).ToArray(); |
|
var ciphertext = cipher.Skip(AESKeySaltBytes).ToArray(); |
var ciphertext = cipher.Skip(AESKeySaltBytes).ToArray(); |
|
using (var pdb = new Rfc2898DeriveBytes(password, salt, 1000)) |
{ |
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8); |
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8); |
using var pdb = new Rfc2898DeriveBytes(password, salt, 1000); |
rijndael.Key = pdb.GetBytes(rijndael.KeySize / 8); |
rijndael.IV = pdb.GetBytes(rijndael.BlockSize / 8); |
|
using (var memoryStream = new MemoryStream()) |
{ |
using (var cryptoStream = |
new CryptoStream(memoryStream, rijndael.CreateDecryptor(), CryptoStreamMode.Write)) |
{ |
await cryptoStream.WriteAsync(ciphertext, 0, ciphertext.Length); |
cryptoStream.Close(); |
using var memoryStream = new MemoryStream(); |
using var cryptoStream = |
new CryptoStream(memoryStream, rijndael.CreateDecryptor(), CryptoStreamMode.Write); |
await cryptoStream.WriteAsync(ciphertext, 0, ciphertext.Length); |
cryptoStream.Close(); |
|
return memoryStream.ToArray(); |
} |
} |
} |
} |
return memoryStream.ToArray(); |
} |
|
#endregion |