/// <summary>
/// Change partial ownership.
/// </summary>
/// <returns>The partial one.</returns>
/// <param name="password">Password.</param>
/// <param name="coin">Coin.</param>
/// <param name="redemptionKey">Redemption key.</param>
public CoinDto SwapPartialOne(SecureString password, CoinDto coin, RedemptionKeyDto redemptionKey)
{
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
if (coin == null)
{
throw new ArgumentNullException(nameof(coin));
}
if (redemptionKey == null)
{
throw new ArgumentNullException(nameof(redemptionKey));
}
var v1 = coin.Version + 1;
var v2 = coin.Version + 2;
var v3 = coin.Version + 3;
coin.Keeper = DeriveKey(v2, coin.Stamp, DeriveKey(v3, coin.Stamp, DeriveKey(v3, coin.Stamp, password).ToSecureString()).ToSecureString());
coin.Version = v1;
coin.Principle = redemptionKey.Key1;
coin.Stamp = coin.Stamp;
coin.Envelope = coin.Envelope;
coin.Hint = redemptionKey.Key2;
return(coin);
}
/// <summary>
/// Partial release one secret key for escrow.
/// </summary>
/// <returns>The release.</returns>
/// <param name="version">Version.</param>
/// <param name="stamp">Stamp.</param>
/// <param name="memo">Memo.</param>
/// <param name="password">Password.</param>
public string PartialRelease(int version, string stamp, string memo, SecureString password)
{
if (string.IsNullOrEmpty(stamp))
{
throw new ArgumentNullException(nameof(stamp));
}
if (memo == null)
{
throw new ArgumentNullException(nameof(memo));
}
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
var subKey1 = DeriveKey(version + 1, stamp, password);
var subKey2 = DeriveKey(version + 2, stamp, password).ToSecureString();
var mix = DeriveKey(version + 2, stamp, subKey2);
var redemption = new RedemptionKeyDto()
{
Key1 = subKey1, Key2 = mix, Memo = memo, Stamp = stamp
};
return(JsonConvert.SerializeObject(redemption));
}
/// <summary>
/// Change ownership.
/// </summary>
/// <returns>The swap.</returns>
/// <param name="password">Password.</param>
/// <param name="coin">Coin.</param>
/// <param name="redemptionKey">Redemption key.</param>
public (CoinDto, CoinDto) CoinSwap(SecureString password, CoinDto coin, RedemptionKeyDto redemptionKey)
{
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
if (coin == null)
{
throw new ArgumentNullException(nameof(coin));
}
if (redemptionKey == null)
{
throw new ArgumentNullException(nameof(redemptionKey));
}
if (!redemptionKey.Stamp.Equals(coin.Stamp))
{
throw new Exception("Redemption stamp is not equal to the coins stamp!");
}
var v1 = coin.Version + 1;
var v2 = coin.Version + 2;
var v3 = coin.Version + 3;
var v4 = coin.Version + 4;
var c1 = new CoinDto()
{
Keeper = DeriveKey(v2, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, password).ToSecureString()).ToSecureString()),
Version = v1,
Principle = redemptionKey.Key1,
Stamp = redemptionKey.Stamp,
Envelope = coin.Envelope,
Hint = DeriveKey(v2, redemptionKey.Stamp, redemptionKey.Key2.ToSecureString())
};
c1.Hash = Hash(c1).ToHex();
var c2 = new CoinDto()
{
Keeper = DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v4, redemptionKey.Stamp, DeriveKey(v4, redemptionKey.Stamp, password).ToSecureString()).ToSecureString()),
Version = v2,
Principle = redemptionKey.Key2,
Stamp = redemptionKey.Stamp,
Envelope = coin.Envelope,
Hint = DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, password).ToSecureString())
};
c2.Hash = Hash(c2).ToHex();
return(c1, c2);
}
/// <summary>
/// Partial release one secret key for escrow.
/// </summary>
/// <returns>The release.</returns>
/// <param name="version">Version.</param>
/// <param name="stamp">Stamp.</param>
/// <param name="memo">Memo.</param>
/// <param name="secret">secret.</param>
public string PartialRelease(int version, string stamp, string memo, SecureString secret, SecureString salt)
{
Guard.Argument(stamp, nameof(stamp)).NotNull().NotEmpty();
Guard.Argument(secret, nameof(secret)).NotNull();
var subKey1 = DeriveKey(version + 1, stamp, secret, salt);
var subKey2 = DeriveKey(version + 2, stamp, secret, salt).ToSecureString();
var mix = DeriveKey(version + 2, stamp, subKey2, salt);
var redemption = new RedemptionKeyDto {
Key1 = subKey1, Key2 = mix, Memo = memo, Stamp = stamp
};
return(JsonConvert.SerializeObject(redemption));
}
/// <summary>
/// Change ownership.
/// </summary>
/// <returns>The swap.</returns>
/// <param name="secret">secret.</param>
/// <param name="coin">Coin.</param>
/// <param name="redemptionKey">Redemption key.</param>
public (CoinDto, CoinDto) CoinSwap(SecureString secret, CoinDto coin, RedemptionKeyDto redemptionKey)
{
Guard.Argument(secret, nameof(secret)).NotNull();
Guard.Argument(coin, nameof(coin)).NotNull();
Guard.Argument(redemptionKey, nameof(redemptionKey)).NotNull();
try
{ coin = coin.FormatCoinFromBase64(); }
catch (FormatException) { }
if (!redemptionKey.Stamp.Equals(coin.Stamp))
{
throw new Exception("Redemption stamp is not equal to the coins stamp!");
}
var v1 = coin.Version + 1;
var v2 = coin.Version + 2;
var v3 = coin.Version + 3;
var v4 = coin.Version + 4;
var c1 = new CoinDto()
{
Keeper = DeriveKey(v2, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, secret).ToSecureString()).ToSecureString()),
Version = v1,
Principle = redemptionKey.Key1,
Stamp = redemptionKey.Stamp,
Envelope = coin.Envelope,
Hint = DeriveKey(v2, redemptionKey.Stamp, redemptionKey.Key2.ToSecureString())
};
c1.Hash = Hash(c1).ToHex();
var c2 = new CoinDto()
{
Keeper = DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v4, redemptionKey.Stamp, DeriveKey(v4, redemptionKey.Stamp, secret).ToSecureString()).ToSecureString()),
Version = v2,
Principle = redemptionKey.Key2,
Stamp = redemptionKey.Stamp,
Envelope = coin.Envelope,
Hint = DeriveKey(v3, redemptionKey.Stamp, DeriveKey(v3, redemptionKey.Stamp, secret).ToSecureString())
};
c2.Hash = Hash(c2).ToHex();
return(c1, c2);
}
/// <summary>
/// Change partial ownership.
/// </summary>
/// <returns>The partial one.</returns>
/// <param name="secret">secret.</param>
/// <param name="coin">Coin.</param>
/// <param name="redemptionKey">Redemption key.</param>
public CoinDto SwapPartialOne(SecureString secret, CoinDto coin, RedemptionKeyDto redemptionKey)
{
Guard.Argument(secret, nameof(secret)).NotNull();
Guard.Argument(coin, nameof(coin)).NotNull();
Guard.Argument(redemptionKey, nameof(redemptionKey)).NotNull();
var v1 = coin.Version + 1;
var v2 = coin.Version + 2;
var v3 = coin.Version + 3;
coin.Keeper = DeriveKey(v2, coin.Stamp, DeriveKey(v3, coin.Stamp, DeriveKey(v3, coin.Stamp, secret).ToSecureString()).ToSecureString());
coin.Version = v1;
coin.Principle = redemptionKey.Key1;
coin.Stamp = coin.Stamp;
coin.Envelope = coin.Envelope;
coin.Hint = redemptionKey.Key2;
return(coin);
}
