/// <summary>
/// Encrypts by loading inputFile to a string and then encrypting the string. String is then written out as text to the encryptedOutputFile.
/// </summary>
/// <param name="inputFile">Full path to file that will be encrypted.</param>
/// <param name="encryptedOutputFile">Full path to file that will contain encrypted data.</param>
/// <returns>Returns path to encrypted output file.</returns>
public string Encrypt(string inputFile, string encryptedOutputFile)
{
IStringEncryptor encryptor = new StringEncryptorTripleDES();
if (String.IsNullOrEmpty(inputFile) || String.IsNullOrEmpty(encryptedOutputFile))
{
throw new ArgumentNullException("Paths to both input and encrypted output file need to specified.");
}
if (KeyIsValid(GetStringFromByteArray(_key)) == false)
{
throw new System.Exception("Invalid length for Key.");
}
if (IVIsValid(GetStringFromByteArray(_iv)) == false)
{
throw new System.Exception("Invalid length for IV.");
}
try
{
string data = File.ReadAllText(inputFile);
encryptor.Key = this.Key;
encryptor.IV = this.IV;
string encryptedData = encryptor.Encrypt(data);
File.WriteAllText(encryptedOutputFile, encryptedData);
}
catch (System.Exception ex)
{
_msg.Length = 0;
_msg.Append("Attempt to encrypt file ");
_msg.Append(inputFile);
_msg.Append(" failed with following message: ");
_msg.Append("\r\n");
_msg.Append(AppMessages.FormatErrorMessage(ex));
throw new System.Exception(_msg.ToString());
}
finally
{
;
}
return(encryptedOutputFile);
}
