/// <summary>
/// Generates a new address
/// </summary>
/// <param name="seed">The tryte-encoded seed. It should be noted that this seed is not transferred.</param>
/// <param name="security">The secuirty level of private key / seed.</param>
/// <param name="index">The index to start search from. If the index is provided, the generation of the address is not deterministic.</param>
/// <param name="checksum">The adds 9-tryte address checksum</param>
/// <param name="curl">The curl instance.</param>
/// <returns>An String with address.</returns>
public static string NewAddress(string seed, int security, int index, bool checksum, ICurl curl)
{
if (security < 1)
{
throw new ArgumentException("invalid security level provided");
}
Signing signing = new Signing(curl);
int[] key = signing.Key(Converter.ToTrits(seed), index, security);
int[] digests = signing.Digests(key);
int[] addressTrits = signing.Address(digests);
string address = Converter.ToTrytes(addressTrits);
if (checksum)
{
address = Checksum.AddChecksum(address);
}
return(address);
}
/// <summary>
/// </summary>
/// <param name="curl"></param>
public Multisig(ICurl curl)
{
_curl = curl;
_curl.Reset();
_signing = new Signing();
}
internal static List <string> SignInputsAndReturn(string seed,
List <Input> inputs,
Bundle bundle,
List <string> signatureFragments, ICurl curl)
{
bundle.FinalizeBundle(curl);
bundle.AddTrytes(signatureFragments);
// SIGNING OF INPUTS
//
// Here we do the actual signing of the inputs
// Iterate over all bundle transactions, find the inputs
// Get the corresponding private key and calculate the signatureFragment
for (int i = 0; i < bundle.Transactions.Count; i++)
{
if (bundle.Transactions[i].Value < 0)
{
string thisAddress = bundle.Transactions[i].Address;
// Get the corresponding keyIndex of the address
int keyIndex = 0;
foreach (Input input in inputs)
{
if (input.Address.Equals(thisAddress))
{
keyIndex = input.KeyIndex;
break;
}
}
string bundleHash = bundle.Transactions[i].Bundle;
// Get corresponding private key of address
int[] key = new Signing(curl).Key(Converter.ToTrits(seed), keyIndex, 2);
// First 6561 trits for the firstFragment
int[] firstFragment = ArrayUtils.SubArray2(key, 0, 6561);
// Get the normalized bundle hash
int[] normalizedBundleHash = bundle.NormalizedBundle(bundleHash);
// First bundle fragment uses 27 trytes
int[] firstBundleFragment = ArrayUtils.SubArray2(normalizedBundleHash, 0, 27);
// Calculate the new signatureFragment with the first bundle fragment
int[] firstSignedFragment = new Signing(curl).SignatureFragment(firstBundleFragment, firstFragment);
// Convert signature to trytes and assign the new signatureFragment
bundle.Transactions[i].SignatureMessageFragment = Converter.ToTrytes(firstSignedFragment);
// Because the signature is > 2187 trytes, we need to
// find the second transaction to add the remainder of the signature
for (int j = 0; j < bundle.Transactions.Count; j++)
{
// Same address as well as value = 0 (as we already spent the input)
if (bundle.Transactions[j].Address.Equals(thisAddress) &&
bundle.Transactions[j].Value == 0)
{
// Use the second 6562 trits
int[] secondFragment = ArrayUtils.SubArray2(key, 6561, 6561);
// The second 27 to 54 trytes of the bundle hash
int[] secondBundleFragment = ArrayUtils.SubArray2(normalizedBundleHash, 27, 27);
// Calculate the new signature
int[] secondSignedFragment = new Signing(curl).SignatureFragment(secondBundleFragment,
secondFragment);
// Convert signature to trytes and assign it again to this bundle entry
bundle.Transactions[j].SignatureMessageFragment = (Converter.ToTrytes(secondSignedFragment));
}
}
}
}
List <string> bundleTrytes = new List <string>();
// Convert all bundle entries into trytes
foreach (Transaction tx in bundle.Transactions)
{
bundleTrytes.Add(tx.ToTransactionTrytes());
}
bundleTrytes.Reverse();
return(bundleTrytes);
}
