Commit Graph

180 Commits

Author SHA1 Message Date
Andrew Poelstra 6250f4fd9c Checkpoint commit -- prefix-filtered address indexing works 2014-09-01 21:37:00 -05:00
Andrew Poelstra f66b4ff6b3 Fix for upstream, add some address generation benchmarks 2014-09-01 09:24:17 -07:00
Andrew Poelstra 931df9f68d Add Address support 2014-08-31 19:24:31 -07:00
Andrew Poelstra 340b569c73 Add much more agressive provably-false checker
Now unspendable outs are determined by attempting to create a minimal
satisfying input script. If this can't be done, the output is unspendable.
(Unfortunately this "minimal satisfying script" is not (yet) something
that can be shown to the user, since it is more a bundle of constraints
than actual data pushes.)

Current limitations:
  - OP_ADD and friends mean the checker gives the script a free pass.
    There is no fundamental reason for this, I just didn't get to it
    yet.

  - Pubkeys are checked for DER encoding but signatures aren't. This
    is because secp256k1 exposes a method for pubkeys, but not one
    for sigs :). Signatures are loosely length checked.
2014-08-31 16:01:24 -07:00
Andrew Poelstra 8f5c28a533 Fixes for rustc changes 2014-08-30 16:08:38 -07:00
Andrew Poelstra 38f8132067 Fix for upstream 2014-08-28 11:13:33 -07:00
Andrew Poelstra 6bf553c6fe Add BIP32 key support; unify array newtyping; improve base58 trait
Sorry for so many things in one commit ... it was an iterative
process depending as I worked on BIP32 to get the other stuff
working. (And I was too lazy to separate it out after the fact.)

A breaking change by the array newtyping is that Show for Sha256dHash
now outputs the slice Show. You have to use `{:x}` to get the old hex
output.
2014-08-28 09:49:03 -07:00
Andrew Poelstra 47c346be71 Add base58 decode/encode functionality 2014-08-24 23:03:47 -07:00
Andrew Poelstra 688a77ef38 Rename Hash->Uint functions to denote endianness 2014-08-24 12:28:02 -07:00
Andrew Poelstra 611b1f57c9 Add a bunch of small hashtypes for cheap'n'collidey hashtables 2014-08-22 11:32:42 -07:00
Andrew Poelstra 8a814e4331 Add P2SH support 2014-08-15 17:37:40 -07:00
Andrew Poelstra d9d7416e32 Fixes for recent stdlib changes 2014-08-14 15:20:39 -07:00
Andrew Poelstra cfe7d5eb26 Use slices rather than allocations in most parts of script 2014-08-13 20:25:28 -07:00
Andrew Poelstra 526f9fc574 Remove -all- CODESEPARATORS before serializing the script, even though only one has effect
I can validate the whole testnet chain now :) onto P2SH!
2014-08-12 21:34:46 -07:00
Andrew Poelstra 38593dd2ab Remove entire signature push operation, not just signature data, when hashing for checksig 2014-08-11 21:40:30 -07:00
Andrew Poelstra a87dd0042b Get OP_MULTISIG working 2014-08-10 21:37:12 -07:00
Andrew Poelstra e01e9ad3be Implement CHECKSIG and CHECKSIGVERIFY
Still need the multisig ops, and p2sh
2014-08-10 13:51:05 -07:00
Andrew Poelstra ecdb750148 Implement script except for crypto opcodes, replace zero_hash by Default
Looks like to implement the crypto opcodes I may need to switch from
rust-crypto to rust-openssl.. or implement RIPEMD-160 for rust-crypto.
In either case I will need to generalize the hash.rs stuff to support
other hashes, so I'm committing here as a checkpoint before doing all
that.
2014-08-05 19:08:06 -07:00
Andrew Poelstra 2986e1f983 Fix for new partial-move rules; swap hash le_hex_string and be_hex_string
I noticed that the little/big endian hex string functions for Sha256dHash
did not match my intuition. What we should have is that the raw bytes
correspond to a little-endian representation (since we convert to Uint256
by transmuting, and Uint256's have little-endian representation) while
the reversed raw bytes are big-endian.

This means that the output from `sha256sum` is "little-endian", while the
standard "zeros on the left" output from bitcoind is "big-endian". This
is correct since we think of blockhashes as being "below the target" when
they have lots of zeros on the left, and we also notice that when hashing
Bitcoin objects with sha256sum that the output hashes are always reversed.

These two functions le_hex_string and be_hex_string should really not be
used outside of the library; the Encodable trait should give access to a
"big endian" representation while ConsensusEncodable gives access to a
"little endian" representation. That way we describe the split in terms
of user-facing/consensus code rather than big/little endian code, which
is a better way of thinking about it. After all, a hash is a collection
of bytes, not a number --- it doesn't have an intrinsic endianness.

Oh, and by the way, to compute a sha256d hash from sha256sum, you do

  echo -n 'data' | sha256sum | xxd -r -p | sha256dsum
2014-08-03 14:52:59 -07:00
Andrew Poelstra a6eb33efd0 Actually encode network message
A pretty serious oversight :) this was not noticed because I was
simultaneously dealing with a serious tcp connection bug in rustc,
and I had thought bitcoind's angry disconnects were a further
symptom of that.
2014-08-02 18:22:27 -07:00
Andrew Poelstra c80ec9bda8 Sha256dHash: add string encoder/decoder 2014-08-01 10:52:10 -07:00
Andrew Poelstra a2ce000b2b Revamp Serializable interface to be similar to Encoder/Encodable
This is a massive simplification, fixes a couple endianness bugs (though
not all of them I don't think), should give a speedup, gets rid of the
`serialize_iter` crap.
2014-08-01 09:01:39 -07:00
Andrew Poelstra a34f2642f1 Implement ToJson for BlockHeader
I think this is what I want to do for everything json-visible...perhaps
I will not be able to keep the macro for it though, since there are
some clever variations on it (e.g. blocks should have their header's
hash as a field, txes should appear as txids unless vebose output is
requested, etc.)
2014-07-28 20:12:10 -07:00
Andrew Poelstra cc942a47f3 Workaround for rustc hiccup in `for` loop restructuring, remove assert from deserialization code
Thanks to the assert change there is a segfault happening :(
2014-07-25 15:52:48 -07:00
Andrew Poelstra 44dc29f013 Fix BIP30 rewind handling; add unsafe annotations to ThinVec::reserve 2014-07-25 12:44:54 -07:00
Andrew Poelstra 46969b3396 Replace PatriciaTree with HashMap for UTXO set
We get a speed up (~5%) and memory savings (~10%) on initial sync from
using a HashMap, though it's hard to tell precisely how much savings
because it's quite nonlinear.

I haven't tested de/serialization. Some work needs to be done there to
split up the UTXO set since it takes forever to saveload.
2014-07-20 16:52:00 -07:00
Andrew Poelstra 54e4ea4586 Rename Serializable::hash() to Serializable::bitcoin_hash()
We were conflicting with the Rust stdlib trait Hash, which is used
by various datastructures which need a general hash. Also implement
Hash for Sha256dHash so that we can use bitcoin hashes as keys for
such data structures.
2014-07-19 16:11:55 -07:00
Andrew Poelstra 93dadd6a6e Add iterators to patricia tree 2014-07-19 13:02:25 -07:00
Andrew Poelstra 8f826a959d Introduce `BitcoinResult`, use it instead of boolean returns in blockchain 2014-07-18 12:40:04 -07:00
Andrew Poelstra c9ad7c0b58 Initial commit, move into Cargo 2014-07-18 06:56:17 -07:00