// Генерировать ключ
private void btn_generate_key_Click(object sender, EventArgs e)
{
if (AlgName == "AES")
{
aescng.GenerateKey();
this.txt_key.Text = alg.ByteArrayTOStringHEX(aescng.Key);
}
if (AlgName == "3DES")
{
tripledes.GenerateKey();
this.txt_key.Text = alg.ByteArrayTOStringHEX(tripledes.Key);
}
}
public void AesCngCreateEncryptor()
{
using var aes = new AesCng();
using var rng = new RNGCryptoServiceProvider();
var noParams = aes.CreateEncryptor(); // Compliant
aes.GenerateKey();
var withGeneratedKey = aes.CreateEncryptor(); // Compliant
var constantIV = new byte[16];
var withConstant = aes.CreateEncryptor(aes.Key, constantIV); // Noncompliant
aes.GenerateIV();
aes.CreateEncryptor();
var withGeneratedKeyAndIV = aes.CreateEncryptor(aes.Key, aes.IV);
aes.CreateDecryptor(aes.Key, constantIV); // Compliant, we do not check CreateDecryptor
rng.GetBytes(constantIV);
var fromRng = aes.CreateEncryptor(aes.Key, constantIV);
}