public void EncryptSimd_Decrypt(string value)
{
if (System.Runtime.Intrinsics.X86.Aes.IsSupported)
{
var data = Encoding.UTF8.GetBytes(value);
var ciphertext = new Span <byte>(new byte[(data.Length + 16) & ~15]);
var authenticationTag = new Span <byte>(new byte[48]);
var plaintext = new Span <byte>(new byte[ciphertext.Length]);
var key = SymmetricJwk.FromByteArray(Encoding.UTF8.GetBytes("ThisIsA128bitKey" + "ThisIsA128bitKey" + "ThisIsA128bitKey"));
var nonce = Encoding.UTF8.GetBytes("ThisIsAnInitVect");
var encryptorNi = new AesCbcHmacEncryptor(EncryptionAlgorithm.A192CbcHS384, new Aes192CbcEncryptor());
encryptorNi.Encrypt(key.AsSpan(), data, nonce, nonce, ciphertext, authenticationTag, out int tagSize);
var decryptor = new AesCbcHmacDecryptor(EncryptionAlgorithm.A192CbcHS384, new AesCbcDecryptor(EncryptionAlgorithm.A192CbcHS384));
bool decrypted = decryptor.TryDecrypt(key.K, ciphertext, nonce, nonce, authenticationTag.Slice(0, tagSize), plaintext, out int bytesWritten);
Assert.True(decrypted);
Assert.Equal(data, plaintext.Slice(0, bytesWritten).ToArray());
var decryptorNi = new AesCbcHmacDecryptor(EncryptionAlgorithm.A192CbcHS384, new Aes192CbcDecryptor());
plaintext.Clear();
decrypted = decryptorNi.TryDecrypt(key.K, ciphertext, nonce, nonce, authenticationTag.Slice(0, tagSize), plaintext, out bytesWritten);
Assert.True(decrypted);
Assert.Equal(data, plaintext.Slice(0, bytesWritten).ToArray());
Assert.Equal(24, tagSize);
}
}
public void Decrypt_Empty()
{
Span <byte> data = default;
Span <byte> authenticationTag = default;
var plaintext = new byte[0];
var key = SymmetricJwk.FromByteArray(Encoding.UTF8.GetBytes("ThisIsA128bitKey" + "ThisIsA128bitKey"));
Span <byte> nonce = default;
Span <byte> associatedData = default;
var decryptor = new AesCbcHmacDecryptor(EncryptionAlgorithm.A128CbcHS256);
bool decrypted = decryptor.TryDecrypt(key.K, data, nonce, associatedData, authenticationTag, plaintext, out int bytesWritten);
Assert.False(decrypted);
Assert.Equal(0, bytesWritten);
}
public void EncryptFast_Decrypt()
{
var data = Encoding.UTF8.GetBytes("This is a test string for encryption.");
var ciphertext = new Span <byte>(new byte[(data.Length + 16) & ~15]);
var authenticationTag = new Span <byte>(new byte[64]);
var plaintext = new Span <byte>(new byte[data.Length]);
var key = SymmetricJwk.GenerateKey(512);
var nonce = new byte[] { 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1 };
var encryptor = new AesCbcHmacEncryptor(key, EncryptionAlgorithm.Aes256CbcHmacSha512);
encryptor.Encrypt(data, nonce, nonce, ciphertext, authenticationTag);
var decryptor = new AesCbcHmacDecryptor(key, EncryptionAlgorithm.Aes256CbcHmacSha512);
bool decrypted = decryptor.TryDecrypt(ciphertext, nonce, nonce, authenticationTag, plaintext, out int bytesWritten);
Assert.True(decrypted);
}
public void EncryptFast_Decrypt()
{
var data = Encoding.UTF8.GetBytes("This is a test string for encryption.");
var ciphertext = new Span <byte>(new byte[(data.Length + 16) & ~15]);
var authenticationTag = new Span <byte>(new byte[48]);
var plaintext = new Span <byte>(new byte[data.Length]);
var key = SymmetricJwk.GenerateKey(386);
var nonce = new byte[] { 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1 };
var encryptor = new AesCbcHmacEncryptor(EncryptionAlgorithm.A192CbcHS384);
encryptor.Encrypt(key.AsSpan(), data, nonce, nonce, ciphertext, authenticationTag, out int tagSize);
var decryptor = new AesCbcHmacDecryptor(EncryptionAlgorithm.A192CbcHS384);
bool decrypted = decryptor.TryDecrypt(key.K, ciphertext, nonce, nonce, authenticationTag.Slice(0, tagSize), plaintext, out int bytesWritten);
Assert.True(decrypted);
Assert.Equal(24, tagSize);
}
public void Decrypt_Empty()
{
if (System.Runtime.Intrinsics.X86.Aes.IsSupported)
{
Span <byte> data = default;
Span <byte> authenticationTag = default;
var plaintext = new byte[0];
var key = SymmetricJwk.FromByteArray(Encoding.UTF8.GetBytes("ThisIsA128bitKey" + "ThisIsA128bitKey" + "ThisIsA128bitKey"));
Span <byte> nonce = default;
Span <byte> associatedData = default;
var decryptor = new AesCbcHmacDecryptor(EncryptionAlgorithm.A192CbcHS384);
bool decrypted = decryptor.TryDecrypt(key.K, data, nonce, associatedData, authenticationTag, plaintext, out int bytesWritten);
Assert.False(decrypted);
Assert.Equal(0, bytesWritten);
var decryptorNi = new AesCbcHmacDecryptor(EncryptionAlgorithm.A192CbcHS384, new Aes192CbcDecryptor());
decrypted = decryptorNi.TryDecrypt(key.K, data, nonce, associatedData, authenticationTag, plaintext, out bytesWritten);
Assert.False(decrypted);
Assert.Equal(0, bytesWritten);
}
}
public void EncryptSimd_Decrypt(string value)
{
var data = Encoding.UTF8.GetBytes(value);
var ciphertext = new Span <byte>(new byte[(data.Length + 16) & ~15]);
var authenticationTag = new Span <byte>(new byte[64]);
var plaintext = new Span <byte>(new byte[ciphertext.Length]);
var key = new SymmetricJwk(Encoding.UTF8.GetBytes("ThisIsA128bitKey" + "ThisIsA128bitKey" + "ThisIsA128bitKey" + "ThisIsA128bitKey"));
var nonce = Encoding.UTF8.GetBytes("ThisIsAnInitVect");
var encryptorNi = new AesCbcHmacEncryptor(key.K.Slice(0, 32), EncryptionAlgorithm.Aes256CbcHmacSha512, new Aes256NiCbcEncryptor(key.K.Slice(32)));
encryptorNi.Encrypt(data, nonce, nonce, ciphertext, authenticationTag);
var decryptor = new AesCbcHmacDecryptor(key, EncryptionAlgorithm.Aes256CbcHmacSha512);
bool decrypted = decryptor.TryDecrypt(ciphertext, nonce, nonce, authenticationTag, plaintext, out int bytesWritten);
Assert.True(decrypted);
Assert.Equal(data, plaintext.Slice(0, bytesWritten).ToArray());
var decryptorNi = new AesCbcHmacDecryptor(key.K.Slice(0, 32), EncryptionAlgorithm.Aes256CbcHmacSha512, new Aes256NiCbcDecryptor(key.K.Slice(32)));
plaintext.Clear();
decrypted = decryptorNi.TryDecrypt(ciphertext, nonce, nonce, authenticationTag, plaintext, out bytesWritten);
Assert.True(decrypted);
Assert.Equal(data, plaintext.Slice(0, bytesWritten).ToArray());
}