/// <summary>
/// Instantiates an new instance with the data from the <paramref name="configuration"/>.
/// </summary>
/// <param name="configuration">The configuration to use to populate the new instance.</param>
public StackableEncryptor(Configuration.IConfigurationGroup configuration)
: this()
{
if (configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
if (configuration.Key != "Encryptor")
{
throw new ArgumentException($"Wrong configuration. Configuration Key must equal \"Encryptor\". Configuration Key={configuration.Key}", nameof(configuration));
}
// EncryptorConfigurations
if (!configuration.ContainsKey("EncryptorConfigurations"))
{
throw new ArgumentException($"Configuration missing subgroup. Configuration must have subgroup: \"EncryptorConfigurations\".", nameof(configuration));
}
_EncryptorConfigurations = new List <IEncryptorConfiguration>();
foreach (var item in configuration["EncryptorConfigurations"])
{
// TODO: change this configuration item name to HashAlgorithmType to be consistent
// HashAlgorithm
var hashAlgorithmType = Type.GetType((string)Core.Configuration.ConfigurationHelper.FindConfigurationItem(configuration, "HashAlgorithm", typeof(Type)).Value);
// Salt
var saltValue = (string)Core.Configuration.ConfigurationHelper.FindConfigurationItem(configuration, "Salt", typeof(string)).Value;
byte[] salt = Convert.FromBase64String(saltValue);
// PasswordSaltHash
var passwordSaltHashValue = (string)Core.Configuration.ConfigurationHelper.FindConfigurationItem(configuration, "PasswordSaltHash", typeof(string)).Value;
byte[] passwordSaltHash = Convert.FromBase64String(passwordSaltHashValue);
// SymmetricAlgorithmType
Type symmetricAlgorithmType = Type.GetType((string)Core.Configuration.ConfigurationHelper.FindConfigurationItem(configuration, "SymmetricAlgorithmType", typeof(Type)).Value);
ISaltedPassword saltedPassword = new SaltedPassword(hashAlgorithmType, passwordSaltHash, salt);
var dude = new EncryptorConfiguration(saltedPassword, symmetricAlgorithmType);
_EncryptorConfigurations.Add(dude);
}
}
/// <summary>
/// Determines if the <paramref name="candidatePassword"/> is valid for this <see cref="SaltedPassword"/>.
/// </summary>
/// <param name="candidatePassword">The password to check.</param>
/// <returns><b>True</b> if the <paramref name="candidatePassword"/> matches the password that created this <see cref="SaltedPassword"/>; otherwise, <b>false</b> indicates a negative match.</returns>
public bool IsValid(System.Security.SecureString candidatePassword)
{
if (candidatePassword == null)
{
throw new ArgumentNullException(nameof(candidatePassword));
}
var dude = new SaltedPassword(HashAlgorithmType, candidatePassword, Salt);
return(IsValid(dude));
}