public static void AesThrows_PlatformNotSupported_CipherMode_Browser()
{
using (Aes aes = Aes.Create())
{
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptEcb(s_plainText, PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptEcb(s_plainText.AsSpan(), PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptEcb(s_plainText.AsSpan(), s_destination, PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptEcb(s_plainText, PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptEcb(s_plainText.AsSpan(), PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptEcb(s_plainText.AsSpan(), s_destination, PaddingMode.PKCS7));
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptCfb(s_plainText, s_iv));
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptCfb(s_plainText.AsSpan(), s_iv.AsSpan()));
Assert.Throws <PlatformNotSupportedException>(() => aes.EncryptCfb(s_plainText.AsSpan(), s_iv, s_destination));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptCfb(s_plainText, s_iv));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptCfb(s_plainText.AsSpan(), s_iv.AsSpan()));
Assert.Throws <PlatformNotSupportedException>(() => aes.DecryptCfb(s_plainText.AsSpan(), s_iv, s_destination));
aes.Mode = CipherMode.ECB;
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateEncryptor());
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateEncryptor(s_iv, s_iv));
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateDecryptor());
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateDecryptor(s_iv, s_iv));
aes.Mode = CipherMode.CFB;
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateEncryptor());
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateEncryptor(s_iv, s_iv));
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateDecryptor());
Assert.Throws <PlatformNotSupportedException>(() => aes.CreateDecryptor(s_iv, s_iv));
}
}
public void Challenge7_Solution()
{
var inputFile = new StreamReader("Assets/inputForChallenge7.txt").ReadToEnd();
var key = "YELLOW SUBMARINE";
var decryptedText = Aes.DecryptEcb(Convert.FromBase64String(inputFile), Encoding.UTF8.GetBytes(key));
Console.WriteLine(Encoding.UTF8.GetString(decryptedText));
}
public void Challenge10_InternalTest1()
{
var plainText = "abcdefghijklmnop";
var key = Encoding.UTF8.GetBytes("YELLOW SUBMARINE");
var encryptedText = Aes.EncryptEcb(Encoding.UTF8.GetBytes(plainText), key);
Console.WriteLine($"encryptedText={Convert.ToBase64String(encryptedText)}");
var decryptedText = Aes.DecryptEcb(encryptedText, key);
Assert.AreEqual(plainText, Encoding.UTF8.GetString(decryptedText));
}
public static void EcbRoundtrip(byte[] plaintext, byte[] ciphertext, PaddingMode padding)
{
using (Aes aes = AesFactory.Create())
{
aes.Key = s_aes128OneShotKey;
// Even though we have set the instance to use CFB, the Ecb one shots should
// always be done in ECB.
aes.FeedbackSize = 8;
aes.Mode = CipherMode.CFB;
aes.Padding = padding == PaddingMode.None ? PaddingMode.PKCS7 : PaddingMode.None;
byte[] encrypted = aes.EncryptEcb(plaintext, padding);
byte[] decrypted = aes.DecryptEcb(encrypted, padding);
if (padding == PaddingMode.Zeros)
{
Assert.Equal(plaintext, decrypted[..plaintext.Length]);
public void SelfTest()
{
var r = new Random(42);
var plain = new byte[DataSize];
var key = new byte[16];
r.NextBytes(plain);
r.NextBytes(key);
var cipher = new byte[DataSize];
var plainAgain = new byte[DataSize];
var k = new Aes128Key(key);
Aes.EncryptEcb(plain, cipher, k, PaddingMode.None);
Aes.DecryptEcb(cipher, plainAgain, k, PaddingMode.None);
Assert.Equal(plain, plainAgain);
}