public void Action(string keyFile, string inputFile)
{
if (String.IsNullOrEmpty(keyFile))
{
throw new ArgumentNullException(nameof(keyFile));
}
if (String.IsNullOrEmpty(inputFile))
{
throw new ArgumentNullException(nameof(inputFile));
}
if (!this.FileSystem.Exists(keyFile))
{
throw new FileNotFoundException(keyFile);
}
if (!this.FileSystem.Exists(inputFile))
{
throw new FileNotFoundException(inputFile);
}
string outputFile = inputFile.Replace(".encrypted", ".decrypted");
byte[] key = this.FileSystem.ReadAllBytes(keyFile);
byte[] encrytpedData = this.FileSystem.ReadAllBytes(inputFile);
byte[] clearData = AesCryptography.DecryptWithAes(encrytpedData, key);
this.FileSystem.WriteAllBytes(outputFile, clearData);
}