public static bool changeBookKeeper(byte[] rawHeader, byte[] pubKeyList, byte[] signList)
{
Header header = deserializHeader(rawHeader);
if (header.height == 0)
{
return(initGenesisBlock(header, pubKeyList));
}
BigInteger latestHeight = new BigInteger(((byte[])Storage.Get(Storage.CurrentContext, currentEpochHeightPrefix)).Concat(new byte[] { 0x00 }));
if (latestHeight > header.height)
{
notify("The height of header illegal");
return(false);
}
ECPoint[] keepers = (ECPoint[])StdLib.Deserialize(Storage.Get(Storage.CurrentContext, mCKeeperPubKeysPrefix));
if (!verifySigWithOrder(rawHeader, signList, keepers))
{
notify("Verify signature failed");
return(false);
}
BookKeeper bookKeeper = verifyPubkey(pubKeyList);
if ((ByteString)header.nextBookKeeper != (ByteString)bookKeeper.nextBookKeeper)
{
notify("bookKeeper not match");
throw new Exception();
}
Storage.Put(Storage.CurrentContext, currentEpochHeightPrefix, header.height);
Storage.Put(Storage.CurrentContext, mCKeeperPubKeysPrefix, StdLib.Serialize(bookKeeper.keepers));
ChangeBookKeeperEvent(header.height, rawHeader);
return(true);
}
public static bool initGenesisBlock(Header header, byte[] pubKeyList)
{
if (isGenesised())
{
return(false);
}
if (pubKeyList.Length % MCCHAIN_PUBKEY_LEN != 0)
{
notify("Length of pubKeyList is illegal");
throw new ArgumentException();
}
BookKeeper bookKeeper = verifyPubkey(pubKeyList);
Storage.Put(Storage.CurrentContext, currentEpochHeightPrefix, header.height);
Storage.Put(Storage.CurrentContext, isGenesisedKey, 1);
Storage.Put(Storage.CurrentContext, mCKeeperPubKeysPrefix, StdLib.Serialize(bookKeeper.keepers));
return(true);
}
/// <summary>
/// Tested, 根据给定的有效签名数与公钥数生成BookKeeper
/// </summary>
/// <param name="keyLength"></param>
/// <param name="m"></param>
/// <param name="pubKeyList"></param>
/// <returns></returns>
private static BookKeeper getBookKeeper(int keyLength, int m, byte[] pubKeyList)
{
BookKeeper bookKeeper = new BookKeeper();
byte[] buff = new byte[] { };
buff = writeUint16(buff, keyLength);
ECPoint[] keepers = new ECPoint[keyLength];
for (int i = 0; i < keyLength; i++)
{
var compressPubKey = compressMCPubKey(pubKeyList.Range(i * MCCHAIN_PUBKEY_LEN, MCCHAIN_PUBKEY_LEN));
buff = writeVarBytes(buff, compressPubKey);
ECPoint hash = getCompressPubKey(compressPubKey);
keepers[i] = hash;
}
buff = writeUint16(buff, m);
bookKeeper.nextBookKeeper = bytesToBytes20(Hash160(buff));
bookKeeper.keepers = keepers;
return(bookKeeper);
}