From: Gavin Andresen <gavinandresen@gmail•com>
To: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: [Bitcoin-development] Pull request: faster initial blockchain download
Date: Mon, 5 Sep 2011 16:41:24 -0400 [thread overview]
Message-ID: <CABsx9T2vS4a3k6_6T7KvA+eoc8Rc61HGKRc0nBVMqLeGeTPftQ@mail.gmail.com> (raw)
I'd appreciate review/feedback on this:
https://github.com/bitcoin/bitcoin/pull/492
This change skips ECDSA signature verification for transactions during
the initial block-chain download, which makes downloading the block
chain much faster.
"Initial block chain download" is all blocks up to 120 blocks before
the last blockchain lock-in point.
Reasoning for why this is safe:
If an attacker tries to feed a client bad transactions during the
initial block-chain download (transactions with invalid signatures),
then they change the merkle tree, and at the first blockchain lock-in
the bad chain will be rejected.
Transactions are still checked for orphan blocks that come in during
initial block-chain-download (ConnectInputs will be called with
fBlock=FALSE) and for mined blocks (ConnectInputs called with
fMiner=TRUE).
--
--
Gavin Andresen
reply other threads:[~2011-09-05 20:41 UTC|newest]
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