/// <summary>
/// - Verifies that we are allowed to update this chain
/// - Enrolls a new candidate chain with a CandidateOldVersionRecord referencing the old chain
/// - Adds a OldVersionRecord to the old chain referencing the new chain
/// - Adds a ChainUpdateRecord to the chain requesting update, forwarding it to the new chain.
/// This operation is irreversable.
/// </summary>
/// <param name="newCandidate">The updated candidate information</param>
/// <param name="password">The password provided by the candidate</param>
/// <param name="fp">The fingerprint to verify against</param>
/// <param name="privKey">The private key to pack the data with</param>
/// <param name="chainToUpdate">The chain ID of the chain to be updated</param>
/// <returns>The chain ID pointing to the updated candidate</returns>
public static byte[] UpdateCandidate(Candidate newCandidate, string password, Fingerprint fp,
RSAParameters privKey, byte[] chainToUpdate)
{
if (FullVerifyFromChain(chainToUpdate, password, fp, privKey) < 50f)
{
throw new AccessConfidenceTooLowException("Access confidence too low to update candidate.");
}
var newChainId = EnrollCandidate(newCandidate, password, privKey);
var ovr = new CandidateOldVersionRecord(chainToUpdate, newChainId);
var cur = new CandidateUpdatedRecord(chainToUpdate, newChainId);
var oldRecordEntry = Entry.NewEntry(ovr.Pack(privKey), null, newChainId);
var newRecordEntry = Entry.NewEntry(cur.Pack(privKey), null, chainToUpdate);
Entry.CommitEntry(oldRecordEntry, FactomWallet);
Entry.CommitEntry(newRecordEntry, FactomWallet);
Thread.Sleep(10100);
Entry.RevealEntry(oldRecordEntry);
Entry.RevealEntry(newRecordEntry);
return(newChainId);
}
/// <summary>
/// </summary>
/// <param name="chainId"></param>
/// <param name="pubKey">The public key to verify the data with</param>
/// <returns></returns>
public static List <CandidateOldVersionRecord> GetOldVersionRecords(byte[] chainId, RSAParameters pubKey)
{
var entries = Chain.GetAllChainEntries(chainId);
var entriesData = entries.Select(e => Entry.GetEntryData(e).Content).ToList();
var records = new List <CandidateOldVersionRecord>();
foreach (var data in entriesData)
{
if (Bytes.StartsWith(data, CandidateOldVersionRecord.CandidateOldVersionPrefix))
{
records.Add(CandidateOldVersionRecord.Unpack(data, pubKey));
}
}
return(records);
}
/// <summary>
/// - Verifies that we are allowed to update this chain
/// - Enrolls a new candidate chain with a CandidateOldVersionRecord referencing the old chain
/// - Adds a OldVersionRecord to the old chain referencing the new chain
/// - Adds a ChainUpdateRecord to the chain requesting update, forwarding it to the new chain.
/// This operation is irreversable.
/// </summary>
/// <param name="newCandidate">The updated candidate information</param>
/// <param name="password">The password provided by the candidate</param>
/// <param name="fp">The fingerprint to verify against</param>
/// <param name="privKey">The private key to pack the data with</param>
/// <param name="chainToUpdate">The chain ID of the chain to be updated</param>
/// <returns>The chain ID pointing to the updated candidate</returns>
public static byte[] UpdateCandidate(Candidate newCandidate, string password, Fingerprint fp,
RSAParameters privKey, byte[] chainToUpdate)
{
if (FullVerifyFromChain(chainToUpdate, password, fp, privKey) < 50f)
throw new AccessConfidenceTooLowException("Access confidence too low to update candidate.");
var newChainId = EnrollCandidate(newCandidate, password, privKey);
var ovr = new CandidateOldVersionRecord(chainToUpdate, newChainId);
var cur = new CandidateUpdatedRecord(chainToUpdate, newChainId);
var oldRecordEntry = Entry.NewEntry(ovr.Pack(privKey), null, newChainId);
var newRecordEntry = Entry.NewEntry(cur.Pack(privKey), null, chainToUpdate);
Entry.CommitEntry(oldRecordEntry, FactomWallet);
Entry.CommitEntry(newRecordEntry, FactomWallet);
Thread.Sleep(10100);
Entry.RevealEntry(oldRecordEntry);
Entry.RevealEntry(newRecordEntry);
return newChainId;
}