/// <summary>
/// First method to add a chain to factom. Spends the entry credits, must wait 10seconds and call
/// RevealChain() to finalize the commit.
/// </summary>
/// <param name="c">Chain to be added</param>
/// <param name="name">Name of Entry Credit wallet</param>
/// <returns>ChainID of chain added, do not lose this!</returns>
public static byte[] CommitChain(ChainType c, string name)
{
var byteList = new List<byte>();
//1 byte version
byteList.Add(0);
// 6 byte milliTimestamp (truncated unix time)
byteList.AddRange(Times.MilliTime());
var entry = c.FirstEntry;
// 32 Byte ChainID Hash
//byte[] chainIDHash = Encoding.ASCII.GetBytes(c.ChainId);
var chainIDHash = c.ChainId;
chainIDHash = SHA256.Create().ComputeHash(chainIDHash);
chainIDHash = SHA256.Create().ComputeHash(chainIDHash);
byteList.AddRange(chainIDHash);
// 32 byte Weld; sha256(sha256(EntryHash + ChainID))
var cid = c.ChainId;
var s = Entries.HashEntry(c.FirstEntry);
var weld = new byte[cid.Length + s.Length];
s.CopyTo(weld, 0);
cid.CopyTo(weld, s.Length);
weld = SHA256.Create().ComputeHash(weld);
weld = SHA256.Create().ComputeHash(weld);
byteList.AddRange(weld);
// 32 byte Entry Hash of the First Entry
byteList.AddRange(Entries.HashEntry(c.FirstEntry));
// 1 byte number of Entry Credits to pay
var cost = (sbyte) (Entry.EntryCost(entry) + 10); // TODO: check errors
byteList.Add(BitConverter.GetBytes(cost)[0]);
var com = new WalletCommit();
com.Message = Arrays.ByteArrayToHex(byteList.ToArray());
var json = JsonConvert.SerializeObject(com);
var req = new RestRequest("/commit-chain/" + name, Method.POST);
req.RequestFormat = DataFormat.Json;
req.AddParameter("application/json", json, ParameterType.RequestBody);
req.AddUrlSegment("name", name);
var resp = StaticValues.clientD.Execute(req);
Console.WriteLine("CommitChain Resp = " + resp.StatusCode); // TODO: Remove
Console.WriteLine("Message= " + com.Message); // TODO: Remove
if (resp.StatusCode != HttpStatusCode.OK) {
throw new FactomChainException("Chain Commit Failed. Message: " + resp.ErrorMessage);
}
return Entries.ChainIdOfFirstEntry(c.FirstEntry);
}
/// <summary>
/// First method to add a chain to factom. Spends the entry credits, must wait 10seconds and call
/// RevealChain() to finalize the commit.
/// </summary>
/// <param name="c">Chain to be added</param>
/// <param name="name">Name of Entry Credit wallet</param>
/// <returns>ChainID of chain added, do not lose this!</returns>
public static byte[] CommitChain(ChainType c, string name)
{
var byteList = new List <byte>();
//1 byte version
byteList.Add(0);
// 6 byte milliTimestamp (truncated unix time)
byteList.AddRange(Times.MilliTime());
var entry = c.FirstEntry;
// 32 Byte ChainID Hash
//byte[] chainIDHash = Encoding.ASCII.GetBytes(c.ChainId);
var chainIDHash = c.ChainId;
chainIDHash = SHA256.Create().ComputeHash(chainIDHash);
chainIDHash = SHA256.Create().ComputeHash(chainIDHash);
byteList.AddRange(chainIDHash);
// 32 byte Weld; sha256(sha256(EntryHash + ChainID))
var cid = c.ChainId;
var s = Entries.HashEntry(c.FirstEntry);
var weld = new byte[cid.Length + s.Length];
s.CopyTo(weld, 0);
cid.CopyTo(weld, s.Length);
weld = SHA256.Create().ComputeHash(weld);
weld = SHA256.Create().ComputeHash(weld);
byteList.AddRange(weld);
// 32 byte Entry Hash of the First Entry
byteList.AddRange(Entries.HashEntry(c.FirstEntry));
// 1 byte number of Entry Credits to pay
var cost = (sbyte)(Entry.EntryCost(entry) + 10); // TODO: check errors
byteList.Add(BitConverter.GetBytes(cost)[0]);
var com = new WalletCommit();
com.Message = Arrays.ByteArrayToHex(byteList.ToArray());
var json = JsonConvert.SerializeObject(com);
var req = new RestRequest("/commit-chain/" + name, Method.POST);
req.RequestFormat = DataFormat.Json;
req.AddParameter("application/json", json, ParameterType.RequestBody);
req.AddUrlSegment("name", name);
var resp = StaticValues.clientD.Execute(req);
Console.WriteLine("CommitChain Resp = " + resp.StatusCode); // TODO: Remove
Console.WriteLine("Message= " + com.Message); // TODO: Remove
if (resp.StatusCode != HttpStatusCode.OK)
{
throw new FactomChainException("Chain Commit Failed. Message: " + resp.ErrorMessage);
}
return(Entries.ChainIdOfFirstEntry(c.FirstEntry));
}
