37 lines
1.2 KiB
C#
37 lines
1.2 KiB
C#
using Marco.Pms.Services.Service.ServiceInterfaces;
|
|
using System.Security.Cryptography;
|
|
using System.Text;
|
|
|
|
namespace Marco.Pms.Services.Service
|
|
{
|
|
public class AesEncryption : IAesEncryption
|
|
{
|
|
public (byte[] ciphertext, byte[] nonce, byte[] tag) Encrypt(string plaintext, byte[] key)
|
|
{
|
|
byte[] autoKey = new byte[32]; // 32 bytes = 256 bits
|
|
RandomNumberGenerator.Fill(autoKey);
|
|
var stringKey = Convert.ToBase64String(autoKey);
|
|
|
|
byte[] nonce = RandomNumberGenerator.GetBytes(12);
|
|
byte[] plaintextBytes = Encoding.UTF8.GetBytes(plaintext);
|
|
byte[] ciphertext = new byte[plaintextBytes.Length];
|
|
byte[] tag = new byte[16];
|
|
|
|
using var aes = new AesGcm(key, 16);
|
|
aes.Encrypt(nonce, plaintextBytes, ciphertext, tag);
|
|
|
|
return (ciphertext, nonce, tag);
|
|
}
|
|
|
|
public string Decrypt(byte[] ciphertext, byte[] nonce, byte[] tag, byte[] key)
|
|
{
|
|
byte[] plaintext = new byte[ciphertext.Length];
|
|
|
|
using var aes = new AesGcm(key, 16);
|
|
aes.Decrypt(nonce, ciphertext, tag, plaintext);
|
|
|
|
return Encoding.UTF8.GetString(plaintext);
|
|
}
|
|
}
|
|
}
|