public void Validate(BlocksIndex index, Block nextBlock)
{
var expectedIndex = index.IsEmpty ? 1 : index.Last.Index + 1;;
if (nextBlock.Index != expectedIndex)
{
throw new ArgumentException("Invalid Index value");
}
var expectedSignature = index.IsEmpty ? HashValue.Empty : index.Last.Signature;;
if (nextBlock.PreviousBlock != expectedSignature)
{
throw new ArgumentException("Invalid PreviousBlock value");
}
var realHash = _blockSigner.Sign(nextBlock.Index, nextBlock.Node, nextBlock.Rnd, nextBlock.PreviousBlock, nextBlock.Transactions);
if (realHash != nextBlock.Signature)
{
throw new ArgumentException("Invalid Signature");
}
}
public Block Create(long index, INode node, string rnd, HashValue previousBlock, IReadOnlyList <Transaction> transactions)
{
var hash = _blockSigner.Sign(index, node, rnd, previousBlock, transactions);
return(new Block(index, node, rnd, previousBlock, hash, transactions));
}
