/// <summary>
/// Saves the public property values contained in the current instance to an encrypted file. Key and IV parameters are used
/// to specify an AES encryption. Serialization is used to get the object values into an XML string that will be encrypted and
/// written to the output file.
/// </summary>
/// <param name="filePath">Full path for output file.</param>
/// <param name="key">AES encryption key.</param>
/// <param name="iv">AES IV value.</param>
/// <remarks>Only AES encryption is supported by this routine.</remarks>
public void SaveToXmlFile(string filePath, string key, string iv)
{
pfEncryptionAlgorithm alg = pfEncryptionAlgorithm.AES;
IStringEncryptor enc2 = PFEncryption.GetStringEncryptor(alg);
//store xml data in a string
string xmldata = this.ToXmlString();
//encrypt the xml data string
enc2.Key = key;
enc2.IV = iv;
string encryptedXML = enc2.Encrypt(xmldata);
//save encrypted xml to file
File.WriteAllText(filePath, encryptedXML);
}
/// <summary>
/// Creates and initializes an instance of the class by loading a serialized version of the instance stored in an encrypted file.
/// The file is first decrypted into an XML string and the XML string is then used to create an instance of the class.
/// </summary>
/// <param name="filePath">Full path for the input file.</param>
/// <param name="key">AES encryption key.</param>
/// <param name="iv">AES IV value.</param>
/// <returns>An instance of PFKeyValueListEx.</returns>
/// <remarks>Only AES encryption is supported by this routine.</remarks>
public static PFKeyValueListExSorted <K, V> LoadFromXmlFile(string filePath, string key, string iv)
{
pfEncryptionAlgorithm alg = pfEncryptionAlgorithm.AES;
IStringEncryptor enc2 = PFEncryption.GetStringEncryptor(alg);
PFKeyValueListExSorted <K, V> listElements;
//first: load the encrypted data from the specified file
string encryptedXML = File.ReadAllText(filePath);
//next: decrypt the encrypted data
enc2.Key = key;
enc2.IV = iv;
string xmldata = enc2.Decrypt(encryptedXML);
//step 3: create a PFLIcense object from the decrypted string
listElements = LoadFromXmlString(xmldata);
//finally: return to caller
return(listElements);
}
public pfKeyIvPair GenerateKeyIVPair(pfEncryptionAlgorithm alg)
{
pfKeyIvPair ki = PFEncryption.GenerateKeyIvPair(alg);
return(ki);
}
