/// <summary>
/// AES Encryption service.
/// </summary>
/// <param name="toEncryption">CLI input model.</param>
/// <returns>CLI output model with information about decryption.</returns>
public static SymmetricCryptographyCliOutput EncryptionRequest(ISymmetricCryptographyCliInput toEncryption, CryptoProvider cryptoProvider)
{
Log.Information($"New aes encryption request => {toEncryption.CipherType}");
byte[] key = null;
byte[] IV = null;
// check if user provide encryption key
if (!string.IsNullOrEmpty(toEncryption.Key))
{
Log.Information("Working with the provided encryption key.");
key = Convert.FromBase64String(toEncryption.Key);
}
else
{
Log.Information("Generating new encryption key.");
key = cryptoProvider.GenerateKey(toEncryption.CipherType.KeySize);
}
// check if user provide IV
if (!string.IsNullOrEmpty(toEncryption.InitializationVector) && toEncryption.CipherType.CipherMode != CipherMode.ECB)
{
Log.Information("Working with the provided initialization vector.");
Console.WriteLine("Using same initialization vector for more then one encryption is not recommended!");
IV = Convert.FromBase64String(toEncryption.InitializationVector);
}
else
{
Log.Information("Generating new initialization vector.");
IV = cryptoProvider.GenerateInitializationVector();
}
var encrypted = cryptoProvider.Encrypt(toEncryption.Content, key, IV, toEncryption.CipherType.CipherMode);
Log.Information("Successfully encrypted.");
if (toEncryption.CipherType.CipherMode == CipherMode.ECB)
{
return(new SymmetricCryptographyCliOutput(key, encrypted, toEncryption.CipherType));
}
else
{
return(new SymmetricCryptographyCliOutput(IV, key, encrypted, toEncryption.CipherType));
}
}