public async Task ComcryptDecomcryptTest()
{
var message = new Message {
StringMessage = $"Sensitive ReceivedLetter 0", MessageId = 0
};
var data = JsonSerializer.SerializeToUtf8Bytes(message);
var hashKey = await ArgonHash
.GetHashKeyAsync(Passphrase, Salt, HouseofCat.Encryption.Constants.Aes256.KeySize)
.ConfigureAwait(false);
_output.WriteLine(Encoding.UTF8.GetString(hashKey));
_output.WriteLine($"HashKey: {Encoding.UTF8.GetString(hashKey)}");
// Comcrypt
var payload = await Gzip.CompressAsync(data);
var encryptedPayload = AesEncrypt.Aes256Encrypt(payload, hashKey);
// Decomcrypt
var decryptedData = AesEncrypt.Aes256Decrypt(encryptedPayload, hashKey);
Assert.NotNull(decryptedData);
var decompressed = await Gzip.DecompressAsync(decryptedData);
JsonSerializer.SerializeToUtf8Bytes(decompressed);
_output.WriteLine($"Data: {Encoding.UTF8.GetString(data)}");
_output.WriteLine($"Decrypted: {Encoding.UTF8.GetString(decryptedData)}");
Assert.Equal(data, decompressed);
}
// Returns Success
public bool Decrypt(Letter letter)
{
if (!letter.LetterMetadata.Encrypted || (_hashKey == null && _hashKey.Length == 0))
{
return(false);
} // Don't decrypt without it being encrypted.
try
{
letter.Body = AesEncrypt.Aes256Decrypt(letter.Body, _hashKey);
letter.LetterMetadata.Encrypted = false;
if (letter.LetterMetadata.CustomFields.ContainsKey(Constants.HeaderForEncrypted))
{
letter.LetterMetadata.CustomFields.Remove(Constants.HeaderForEncrypted);
}
if (letter.LetterMetadata.CustomFields.ContainsKey(Constants.HeaderForEncryption))
{
letter.LetterMetadata.CustomFields.Remove(Constants.HeaderForEncryption);
}
if (letter.LetterMetadata.CustomFields.ContainsKey(Constants.HeaderForEncryptDate))
{
letter.LetterMetadata.CustomFields.Remove(Constants.HeaderForEncryptDate);
}
}
catch { return(false); }
return(true);
}
public async Task EncryptDecryptTest()
{
var data = new byte[] { 0xFF, 0x00, 0xAA, 0xFF, 0x00, 0x00, 0xFF, 0xAA, 0x00, 0xFF, 0x00, 0xFF };
var hashKey = await ArgonHash
.GetHashKeyAsync(Passphrase, Salt, 32)
.ConfigureAwait(false);
_output.WriteLine(Encoding.UTF8.GetString(hashKey));
_output.WriteLine($"HashKey: {Encoding.UTF8.GetString(hashKey)}");
var encryptedData = AesEncrypt.Aes256Encrypt(data, hashKey);
_output.WriteLine($"Encrypted: {Encoding.UTF8.GetString(encryptedData)}");
var decryptedData = AesEncrypt.Aes256Decrypt(encryptedData, hashKey);
_output.WriteLine($"Data: {Encoding.UTF8.GetString(data)}");
_output.WriteLine($"Decrypted: {Encoding.UTF8.GetString(decryptedData)}");
Assert.Equal(data, decryptedData);
}
public void EncryptDecrypt512()
{
var decryptedData = AesEncrypt.Aes256Decrypt(AesEncrypt.Aes256Encrypt(Payload2, HashKey), HashKey);
}