/// <summary>
/// Sets the pass phrase.
/// </summary>
/// <param name="passPhrase">The pass phrase.</param>
/// <param name="salt">The salt.</param>
public void SetPassPhrase(string passPhrase, byte[] salt)
{
Ensure.That(passPhrase).IsNotNullOrWhiteSpace();
Ensure.That(salt).IsNotNull();
Ensure.That(salt.Length % 16).Is(0);
var passPhraseHash = HashUtility.GetHash(passPhrase, salt, 32);
WritePassPhraseHash(passPhraseHash);
HasPassPhrase = true;
}
/// <summary>
/// Writes the pass phrase hash.
/// </summary>
/// <param name="passPhraseHash">The pass phrase hash.</param>
internal void WritePassPhraseHash(byte[] passPhraseHash)
{
var entropy = HashUtility.GetSalt(16);
var cipherValue = _dataProtector.Protect(passPhraseHash, entropy);
var registryValueBytes = new byte[16 + cipherValue.Length];
Array.Copy(entropy, 0, registryValueBytes, 0, 16);
Array.Copy(cipherValue, 0, registryValueBytes, 16, cipherValue.Length);
var registryValue = Convert.ToBase64String(registryValueBytes);
_registryStore.Write(KeyName, registryValue);
}
