├── COPYING
├── ChronoBit
├── Bitcoin.pm
├── Bitcoin
│ ├── VarIntAdapter.pm
│ └── VarStrAdapter.pm
├── JSONRPC.pm
├── P2Pool.pm
├── Proof.pm
├── ProofFile.pm
├── ProofStep.pm
├── ProofStore.pm
├── SHA.pm
├── SHAState.pm
├── StructClass.pm
└── Util.pm
├── README
├── TODO
├── add_data_to_proof.pl
├── chronobit.conf-sample
├── chronobitd.pl
├── jsonrpc_client.pl
├── log.conf-sample
├── merge_proofs.pl
├── reverse_bytes.pl
├── sample_proofs
└── hello_world.proof
├── share2proof.pl
├── shorten_proof_from_share.pl
├── t
├── chronobit_jsonrpc.t
├── proof.t
├── proofstep.t
├── sha.t
├── sha_state.t
├── util.t
└── var_len.t
├── traverse_shares.pl
└── verify_proof.pl
/COPYING:
--------------------------------------------------------------------------------
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559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
--------------------------------------------------------------------------------
/ChronoBit/Bitcoin.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::Bitcoin;
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use base 'Exporter';
7 | our @EXPORT = qw/tx_out_point tx_in tx_out tx mrkllink block_header
8 | aux_pow mm_coinbase var_int var_str var_bytes/;
9 |
10 | use Data::ParseBinary;
11 | use ChronoBit::Bitcoin::VarIntAdapter;
12 | use ChronoBit::Bitcoin::VarStrAdapter;
13 |
14 | sub var_int {
15 | return ChronoBit::Bitcoin::VarIntAdapter::var_int(@_);
16 | }
17 |
18 | sub var_str {
19 | return ChronoBit::Bitcoin::VarStrAdapter::var_str(@_);
20 | }
21 |
22 | sub var_bytes {
23 | return ChronoBit::Bitcoin::VarStrAdapter::var_bytes(@_);
24 | }
25 |
26 | sub tx_out_point {
27 | return Struct($_[0],
28 | Bytes('hash', 32),
29 | ULInt32('index')
30 | )
31 | }
32 |
33 | sub tx_in {
34 | return Struct($_[0],
35 | tx_out_point('previous_output'),
36 | var_int('script_length'),
37 | Field('signature_script', sub { $_->ctx->{script_length} }),
38 | ULInt32('sequence')
39 | )
40 | }
41 |
42 | sub tx_out {
43 | return Struct($_[0],
44 | ULInt64('value'),
45 | var_int('pk_script_length'),
46 | Field('pk_script', sub { $_->ctx->{pk_script_length} })
47 | )
48 | }
49 |
50 | sub tx {
51 | return Struct($_[0],
52 | ULInt32('version'),
53 | var_int('tx_in_count'),
54 | Array(sub { $_->ctx->{tx_in_count} }, tx_in('tx_in')),
55 | var_int('tx_out_count'),
56 | Array(sub { $_->ctx->{tx_out_count} }, tx_out('tx_out')),
57 | ULInt32('lock_time')
58 | )
59 | }
60 |
61 | sub mrkllink {
62 | return Struct($_[0],
63 | Bytes('block_hash', 32),
64 | var_int('branch_count'),
65 | Array(sub { $_->ctx->{branch_count} }, Bytes('branch', 32)),
66 | ULInt32('index')
67 | )
68 | }
69 |
70 | sub block_header {
71 | return Struct($_[0],
72 | ULInt32('version'),
73 | Bytes('prev_block', 32),
74 | Bytes('merkle_root', 32),
75 | ULInt32('timestamp'),
76 | ULInt32('bits'),
77 | ULInt32('nonce')
78 | )
79 | }
80 |
81 | sub aux_pow {
82 | return Struct($_[0],
83 | tx('coinbase_txn'),
84 | mrkllink('merkle_link'),
85 | var_int('aux_branch_count'),
86 | Array(sub { $_->ctx->{aux_branch_count} }, Bytes('aux_branch', 32)),
87 | ULInt32('index'),
88 | block_header('parent_block'),
89 |
90 | )
91 | }
92 |
93 | sub mm_coinbase {
94 | return Struct($_[0],
95 | Magic("\xfa\xbemm"),
96 | Bytes('block_hash', 32),
97 | ULInt32('merkle_size'),
98 | ULInt32('merkle_nonce')
99 | )
100 | }
101 |
102 | 1;
103 |
--------------------------------------------------------------------------------
/ChronoBit/Bitcoin/VarIntAdapter.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::Bitcoin::VarIntAdapter;
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use Data::ParseBinary;
7 |
8 | our @ISA = qw/Data::ParseBinary::Adapter/;
9 |
10 | sub _encode {
11 | my ($self, $value) = @_;
12 |
13 | my $ret = { value => $value, b1 => $value };
14 | if($value >= 0xfd) {
15 | if($value <= 0xffff) {
16 | $ret->{b1} = 0xfd;
17 | } elsif($value <= 0xffffffff) {
18 | $ret->{b1} = 0xfe;
19 | } else {
20 | $ret->{b1} = 0xff;
21 | }
22 | }
23 |
24 | return $ret;
25 | }
26 |
27 | sub _decode {
28 | my ($self, $value) = @_;
29 |
30 | return $value->{value};
31 | }
32 |
33 | sub var_int {
34 | return ChronoBit::Bitcoin::VarIntAdapter->create(Struct($_[0],
35 | Byte("b1"),
36 | IfThenElse("value", sub { $_->ctx->{b1} < 0xfd },
37 | Value('uint8_t value', sub { $_->ctx->{b1} }),
38 | IfThenElse('>8 value', sub { $_->ctx->{b1} == 0xfd },
39 | ULInt16('uint16_t value'),
40 | IfThenElse('>16 value', sub { $_->ctx->{b1} == 0xfe },
41 | ULInt32('uint32_t value'),
42 | ULInt64('uint64_t value')
43 | )
44 | )
45 | )
46 | ))
47 | }
48 |
49 | 1;
50 |
51 |
--------------------------------------------------------------------------------
/ChronoBit/Bitcoin/VarStrAdapter.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::Bitcoin::VarStrAdapter;
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use Data::ParseBinary;
7 | use ChronoBit::Bitcoin::VarIntAdapter;
8 |
9 | our @ISA = qw/Data::ParseBinary::Adapter/;
10 |
11 | sub _encode {
12 | my ($self, $value) = @_;
13 |
14 | return {
15 | length => length($value),
16 | value => $value,
17 | };
18 | }
19 |
20 | sub _decode {
21 | my ($self, $value) = @_;
22 |
23 | return $value->{value};
24 | }
25 |
26 | sub var_str {
27 | return ChronoBit::Bitcoin::VarStrAdapter->create(Struct($_[0],
28 | ChronoBit::Bitcoin::VarIntAdapter::var_int('length'),
29 | String('value', sub { $_->ctx->{length} }, encoding => 'ascii'),
30 | ))
31 | }
32 |
33 | sub var_bytes {
34 | return ChronoBit::Bitcoin::VarStrAdapter->create(Struct($_[0],
35 | ChronoBit::Bitcoin::VarIntAdapter::var_int('length'),
36 | Field('value', sub { $_->ctx->{length} }),
37 | ))
38 | }
39 |
40 | 1;
41 |
--------------------------------------------------------------------------------
/ChronoBit/JSONRPC.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::JSONRPC;
2 | use Any::Moose;
3 |
4 | use JSON::XS;
5 | use Log::Log4perl;
6 | use Digest::SHA qw(sha256);
7 |
8 | use ChronoBit::Util;
9 | use ChronoBit::Bitcoin;
10 | use ChronoBit::Proof;
11 | use ChronoBit::ProofStore;
12 |
13 | my $log = Log::Log4perl->get_logger(__PACKAGE__);
14 |
15 | has 'cfg' => (is => 'ro');
16 | has 'curhash' => (is => 'ro');
17 | has 'hash_proofs' => (is => 'ro'); # maps a hash (hex) to an array of shares which have a proof for it
18 | has 'our_shares' => (is => 'ro'); # maps a share's hash (hex) to a proof
19 | has 'proof_store' => (is => 'rw');
20 |
21 | sub BUILD {
22 | my ($self) = @_;
23 |
24 | $self->proof_store(ChronoBit::ProofStore->new(
25 | outdir => $self->cfg->{proofs},
26 | ));
27 | }
28 |
29 | sub getauxblock {
30 | my ($self, @params) = @_;
31 |
32 | if(@params == 0) {
33 | # this is a call for our hash
34 | $log->trace('getauxblock called');
35 | return {
36 | chainid => int $self->cfg->{chainid},
37 | hash => defined($self->curhash) ?
38 | bin2hex(scalar reverse hex2bin($self->curhash)) :
39 | '00'x32,
40 | target => 'p2pool',
41 | };
42 | } else {
43 | # this is a response with a found p2pool share
44 | my ($hash, $pow_hex) = @params;
45 | $hash = bin2hex(scalar reverse hex2bin($hash));
46 |
47 | $log->trace("getauxblock response: " . encode_json(\@params));
48 |
49 | if($hash ne '00'x32) {
50 | my $pow = aux_pow->parse(hex2bin($pow_hex));
51 | my $share_hash = bin2hex($pow->{merkle_link}->{block_hash});
52 |
53 | $log->info("got p2pool share $share_hash for hash $hash");
54 | my $proof = ChronoBit::Proof->new_from_pow(hex2bin($hash), $pow);
55 | $self->proof_store->save($proof);
56 | } else {
57 | $log->debug("got p2pool response of empty hash, boring");
58 | }
59 |
60 | return JSON::XS::true;
61 | }
62 | }
63 |
64 | sub set_hash {
65 | my ($self, @params) = @_;
66 |
67 | $self->{curhash} = $params[0];
68 | return JSON::XS::true;
69 | }
70 |
71 | sub unset_hash {
72 | my ($self, @params) = @_;
73 |
74 | $self->{curhash} = undef;
75 | return JSON::XS::true;
76 | }
77 |
78 | sub debug {
79 | my ($self, @params) = @_;
80 |
81 | return { cur => $self->curhash };
82 | }
83 |
84 | sub all_methods {
85 | return qw/getauxblock set_hash unset_hash debug/;
86 | }
87 |
88 | 1;
89 |
--------------------------------------------------------------------------------
/ChronoBit/P2Pool.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::P2Pool;
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use base 'Exporter';
7 | our @EXPORT = qw/small_block_header share_data share_info hash_link
8 | share_common share1a share1b share ref_type/;
9 |
10 | use Data::ParseBinary;
11 | use ChronoBit::Bitcoin;
12 |
13 | sub list {
14 | return Struct($_[0],
15 | var_int('length'),
16 | Array(sub { $_->ctx->{length} }, $_[1])
17 | )
18 | }
19 |
20 | sub small_block_header {
21 | return Struct($_[0],
22 | var_int('version'), # must be constrained to 32 bits, apparently
23 | Bytes('previous_block', 32),
24 | ULInt32('timestamp'),
25 | ULInt32('bits'),
26 | ULInt32('nonce')
27 | )
28 | }
29 |
30 | sub share_data {
31 | return Struct($_[0],
32 | Bytes('previous_share_hash', 32),
33 | var_bytes('coinbase'),
34 | ULInt32('nonce'),
35 | Bytes('pubkey_hash', 20),
36 | ULInt64('subsidy'),
37 | ULInt16('donation'),
38 | ULInt8('stale_info'), # 0 nothing, 253 orphan, 254 doa, apparently
39 | var_int('desired_version')
40 | )
41 | }
42 |
43 | sub share_info {
44 | return Struct($_[0],
45 | share_data('share_data'),
46 | Bytes('far_share_hash', 32),
47 | ULInt32('max_bits'),
48 | ULInt32('bits'),
49 | ULInt32('timestamp'),
50 | )
51 | }
52 |
53 | sub hash_link {
54 | return Struct($_[0],
55 | Bytes('state', 32),
56 | # extra_data is a 0-length string? :-O
57 | var_int('length')
58 | )
59 | }
60 |
61 | sub share_common {
62 | return Struct($_[0],
63 | small_block_header('min_header'),
64 | share_info('share_info'),
65 | Struct('ref_merkle_link',
66 | list('branch', Bytes('', 32)),
67 | var_int('index')
68 | ),
69 | hash_link('hash_link')
70 | )
71 | }
72 |
73 | sub share1a {
74 | return Struct($_[0],
75 | share_common('common'),
76 |
77 | list('merkle_link', Bytes('branch', 32)),
78 | # here's apparently a 0-bit int which will always be 0 :-O
79 | # ah, that's gotta be gentx's index
80 | )
81 | }
82 |
83 | sub share1b {
84 | return Struct($_[0],
85 | share_common('common'),
86 | list('other_txs', tx)
87 | )
88 | }
89 |
90 | sub share {
91 | return Struct($_[0],
92 | var_int('type'),
93 | var_int('contents_length'), # that's actually wrapping the remainder in var_str, but I want to avoid it
94 | Switch('contents', sub { $_->ctx->{type} }, {
95 | 4 => share1a('1a'),
96 | 5 => share1b('1b'),
97 | })
98 | )
99 | }
100 |
101 | sub ref_type {
102 | return Struct($_[0],
103 | Magic("\xfc\x70\x03\x5c\x7a\x81\xbc\x6f"), # XXX: that varies with network, but nvmd for now
104 | share_info('share_info'),
105 | )
106 | }
107 |
108 | # this is the donation script
109 | our $gentx_before_refhash =
110 | "\x43\x41\x04\xff\xd0\x3d\xe4\x4a\x6e\x11\xb9\x91\x7f\x3a\x29\xf9".
111 | "\x44\x32\x83\xd9\x87\x1c\x9d\x74\x3e\xf3\x0d\x5e\xdd\xcd\x37\x09".
112 | "\x4b\x64\xd1\xb3\xd8\x09\x04\x96\xb5\x32\x56\x78\x6b\xf5\xc8\x29".
113 | "\x32\xec\x23\xc3\xb7\x4d\x9f\x05\xa6\xf9\x5a\x8b\x55\x29\x35\x26".
114 | "\x56\x66\x4b\xac\x00\x00\x00\x00\x00\x00\x00\x00\x21\x20";
115 |
116 | 1;
117 |
--------------------------------------------------------------------------------
/ChronoBit/Proof.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::Proof;
2 | use Any::Moose;
3 |
4 | with 'ChronoBit::StructClass';
5 |
6 | use Data::ParseBinary;
7 | use Digest::SHA qw/sha256/;
8 |
9 | use ChronoBit::Bitcoin;
10 | use ChronoBit::P2Pool;
11 | use ChronoBit::ProofStep;
12 | use ChronoBit::SHAState;
13 | use ChronoBit::Util;
14 |
15 | sub struct {
16 | return Struct('proof',
17 | Bytes('from', 32),
18 | Bytes('to', 32),
19 | var_int('len'),
20 | Array(sub { $_->ctx->{len} }, ChronoBit::ProofStep->struct),
21 | );
22 | }
23 |
24 | has 'from' => (is => 'rw'); # binary
25 | has 'to' => (is => 'rw'); # binary
26 | has 'len' => (is => 'rw', default => 0);
27 | has 'step' => (is => 'rw', isa => 'ArrayRef');
28 |
29 | around 'new_from_binary' => sub {
30 | my ($meth, $class, @args) = @_;
31 |
32 | my $ret = $class->$meth(@args);
33 |
34 | # XXX hack: go through all our steps and bless them
35 | for(my $i = 0; $i < scalar @{$ret->step}; $i++) {
36 | bless $ret->step->[$i], 'ChronoBit::ProofStep';
37 | if($ret->step->[$i]->type == 0) {
38 | bless $ret->step->[$i]->{normal}->{state}, 'ChronoBit::SHAState';
39 | }
40 | }
41 |
42 | return $ret;
43 | };
44 |
45 | sub add_step {
46 | my ($self, $step) = @_;
47 |
48 | $self->len($self->len + 1);
49 | push @{$self->{step}}, $step;
50 | }
51 |
52 | sub perform {
53 | my ($self) = @_;
54 |
55 | my $cur = $self->from;
56 | for(my $i = 0; $i < $self->len; $i++) {
57 | $cur = $self->step->[$i]->perform($cur);
58 | }
59 |
60 | return $cur;
61 | }
62 |
63 | sub explain {
64 | my ($self) = @_;
65 |
66 | my $text = "Start with " . bin2hex($self->from) . "\n";
67 | my $buf = $self->from;
68 | for(my $i = 0; $i < $self->len; $i++) {
69 | my $cur;
70 | ($buf, $cur) = $self->step->[$i]->explain($buf);
71 | $text .= $cur;
72 | }
73 | if($self->to eq $buf) {
74 | $text .= "Arrive at ";
75 | } else {
76 | $text .= "PROOF INCORRECT, should get "
77 | }
78 |
79 | return $text . bin2hex($self->to) . "\n";
80 | }
81 |
82 | sub verify {
83 | my ($self) = @_;
84 |
85 | return $self->perform eq $self->to;
86 | }
87 |
88 | # helper function that adds proof steps from a merkle branch
89 | sub _mrklbranch2proof {
90 | my ($class, $idx, $count, $branch, $proof, $extra_code) = @_;
91 |
92 | for(my $i = 0; $i < $count; $i++) {
93 | my $step = ChronoBit::ProofStep->new;
94 |
95 | my $which;
96 | if($idx % 2 == 0) {
97 | # we're on the left
98 | $which = 'suffix';
99 | } else {
100 | # we're on the right
101 | $which = 'prefix';
102 | }
103 |
104 | $step->normal->{$which} = $branch->[$i];
105 | $proof->add_step($step);
106 | $idx >>= 1;
107 |
108 | if($extra_code) {
109 | &$extra_code($proof);
110 | }
111 | }
112 | }
113 |
114 | # builds a proof from given hash (one set with set_hash rpc call)
115 | # up to the coinbase (using aux_branch from aux PoW)
116 | # $hash is expected to be binary
117 | # $aux_pow is expected to be a parsed struct
118 | sub new_aux2coinbase {
119 | my ($class, $hash, $aux_pow) = @_;
120 |
121 | my $raw_coinbase = $aux_pow->{coinbase_txn}->{tx_in}->[0]->{signature_script};
122 |
123 | my $mm_coinbase = mm_coinbase->parse(
124 | substr($raw_coinbase, index($raw_coinbase, "\xfa\xbemm"), 44));
125 |
126 | my $proof = $class->new(
127 | from => $hash,
128 | to => scalar reverse $mm_coinbase->{block_hash}
129 | );
130 |
131 | $class->_mrklbranch2proof($aux_pow->{index},
132 | $aux_pow->{aux_branch_count}, $aux_pow->{aux_branch}, $proof);
133 |
134 | # one last sha256 (remember they get double-sha256ed?)
135 | $proof->add_step(ChronoBit::ProofStep->new);
136 |
137 | return $proof;
138 | }
139 |
140 | # builds a proof from given coinbase up to the generation transaction's hash
141 | # takes a parsed gentx as input
142 | sub new_coinbase2gentx {
143 | my ($class, $gentx) = @_;
144 |
145 | my $raw_coinbase = $gentx->{tx_in}->[0]->{signature_script};
146 |
147 | my $src_hash = mm_coinbase->parse(
148 | substr($raw_coinbase, index($raw_coinbase, "\xfa\xbemm"), 44))->{block_hash};
149 | my $gentx_bin = tx->build($gentx);
150 |
151 | my $proof = $class->new(
152 | from => $src_hash,
153 | to => sha256(sha256($gentx_bin)),
154 | );
155 |
156 | # simply find the latest occurence of coinbase in the gentx.
157 | # the latter one we find, the more we can compress in front
158 | my $loc = -1;
159 | my $newloc;
160 | my $revfound = 0;
161 | while(($newloc = index($gentx_bin, $src_hash, $loc + 1)) >= 0) {
162 | $loc = $newloc;
163 | }
164 | # maybe a reverse?
165 | while(($newloc = index($gentx_bin, scalar reverse $src_hash, $loc + 1))
166 | > $loc) {
167 | $loc = $newloc;
168 | $revfound = 1;
169 | }
170 | die 'no hash in gentx?' if($loc < 0);
171 |
172 | if($revfound) {
173 | $proof->add_step(ChronoBit::ProofStep->new(type => 1));
174 | }
175 |
176 | $proof->add_step(ChronoBit::ProofStep->new(normal => {
177 | prefix => substr($gentx_bin, 0, $loc),
178 | suffix => substr($gentx_bin, $loc + 32),
179 | }));
180 |
181 | # one last sha256
182 | $proof->add_step(ChronoBit::ProofStep->new);
183 |
184 | return $proof;
185 | }
186 |
187 | # builds a proof from given generation transaction's hash up to the block's
188 | # merkle root.
189 | # takes a parsed aux PoW as input
190 | sub new_gentx2mrklroot {
191 | my ($class, $aux_pow) = @_;
192 |
193 | my $proof = $class->new(
194 | from => sha256(sha256(tx->build($aux_pow->{coinbase_txn}))),
195 | to => $aux_pow->{parent_block}->{merkle_root},
196 | );
197 |
198 | my $ml = $aux_pow->{merkle_link};
199 | $class->_mrklbranch2proof($ml->{index}, $ml->{branch_count},
200 | $ml->{branch}, $proof, sub {
201 | # after each step, add another round of sha256 - merkle tree
202 | # use double sha256ing, whereas aux_branch only one
203 | $_[0]->add_step(ChronoBit::ProofStep->new);
204 | }
205 | );
206 |
207 | return $proof;
208 | }
209 |
210 | # builds a proof for a block (from merkle root)
211 | sub new_mrklroot2block {
212 | my ($class, $block_header) = @_;
213 |
214 | my $hdr_bin = block_header->build($block_header);
215 |
216 | my $proof = $class->new(
217 | from => $block_header->{merkle_root},
218 | to => sha256(sha256($hdr_bin)),
219 | );
220 |
221 | $proof->add_step(ChronoBit::ProofStep->new(normal => {
222 | prefix => substr($hdr_bin, 0, 36),
223 | suffix => substr($hdr_bin, 68)
224 | }));
225 |
226 | $proof->add_step(ChronoBit::ProofStep->new);
227 |
228 | return $proof;
229 | }
230 |
231 | # builds a new proof by merging existing ones (keeps refs to existing
232 | # steps, however, so don't mess around with steps)
233 | sub new_merged {
234 | my ($class, @proofs) = @_;
235 |
236 | die "no proofs given" unless @proofs > 0;
237 |
238 | my $proof = $class->new();
239 | my $first = 1;
240 |
241 | foreach my $p (@proofs) {
242 | unless($first) {
243 | if($proof->to eq scalar reverse $p->from) {
244 | $proof->add_step(ChronoBit::ProofStep->new(type => 1));
245 | } else {
246 | die "proofs don't match up" unless($proof->to eq $p->from);
247 | }
248 | }
249 |
250 | if($first) {
251 | $proof->from($p->from);
252 | $first = 0;
253 | }
254 | $proof->to($p->to);
255 |
256 | foreach my $s (@{$p->step}) {
257 | $proof->add_step($s);
258 | }
259 | }
260 |
261 | return $proof;
262 | }
263 |
264 | # creates a new hash from PoW
265 | sub new_from_pow {
266 | my ($class, $hash, $pow) = @_;
267 |
268 | my @proofs = (
269 | ChronoBit::Proof->new_aux2coinbase($hash, $pow),
270 | ChronoBit::Proof->new_coinbase2gentx($pow->{coinbase_txn}),
271 | ChronoBit::Proof->new_gentx2mrklroot($pow),
272 | ChronoBit::Proof->new_mrklroot2block($pow->{parent_block}),
273 | );
274 |
275 | return ChronoBit::Proof->new_merged(@proofs);
276 | }
277 |
278 | # builds a proof from a p2pool share (proof from previous share's hash
279 | # to this share's hash)
280 | sub new_from_share {
281 | my ($class, $share, $share_hash) = @_;
282 |
283 | die "unimplemented share type" unless($share->{type} == 4);
284 |
285 | my $proof = $class->new(
286 | from => $share->{contents}->{common}->{share_info}->{share_data}->
287 | {previous_share_hash},
288 | to => $share_hash,
289 | );
290 |
291 | # first convert our previous share's hash into share_info.
292 | # that's needed for the ref_hash later.
293 | # we do it by building the entire share_info and then removing our
294 | # prev share's hash from the (8,40) location (first 8 bytes is network's
295 | # magic)
296 | my $ref_type = ref_type->build({ share_info =>
297 | $share->{contents}->{common}->{share_info}
298 | });
299 | $proof->add_step(ChronoBit::ProofStep->new(normal => {
300 | prefix => substr($ref_type, 0, 8),
301 | suffix => substr($ref_type, 40),
302 | }));
303 |
304 | # hash it again
305 | $proof->add_step(ChronoBit::ProofStep->new);
306 |
307 | # now we have ref_hash in our buffer (just need to add 4x00 to it)
308 | # so we can append it to our gentx's state
309 | my $hash_link = $share->{contents}->{common}->{hash_link};
310 | $proof->add_step(ChronoBit::ProofStep->new(normal => {
311 | state => ChronoBit::SHAState->new(len => $hash_link->{length},
312 | state => $hash_link->{state}),
313 | suffix => "\0"x4,
314 | prefix => '',
315 | }));
316 |
317 | # hash it again
318 | $proof->add_step(ChronoBit::ProofStep->new);
319 |
320 | # and now that we have gentx's hash in buffer, we can build up from
321 | # it up to merkle root
322 | $class->_mrklbranch2proof(0, # gentx's index is always 0
323 | $share->{contents}->{merkle_link}->{length},
324 | $share->{contents}->{merkle_link}->{branch},
325 | $proof, sub {
326 | # after each step, add another round of sha256 - merkle tree
327 | # use double sha256ing, whereas aux_branch only one
328 | $_[0]->add_step(ChronoBit::ProofStep->new);
329 | }
330 | );
331 |
332 | # now that we have merkle root in buffer, we can build our share's
333 | # hash from it
334 | my $sbh = $share->{contents}->{common}->{min_header};
335 | my $block = block_header->build({
336 | version => $sbh->{version}, # damn, these HAD to be incompatible...
337 | # p2pool's is a var_int, bitcoin's is a uint32
338 | prev_block => $sbh->{previous_block},
339 | merkle_root => "\x0"x32, # we'll fill it up later
340 | timestamp => $sbh->{timestamp},
341 | bits => $sbh->{bits},
342 | nonce => $sbh->{nonce},
343 | });
344 | $proof->add_step(ChronoBit::ProofStep->new(normal => {
345 | prefix => substr($block, 0, 36),
346 | suffix => substr($block, 68),
347 | }));
348 |
349 | # final sha and we have our share's/block's hash
350 | $proof->add_step(ChronoBit::ProofStep->new);
351 |
352 | return $proof;
353 | }
354 |
355 | 1;
356 |
--------------------------------------------------------------------------------
/ChronoBit/ProofFile.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::ProofFile;
2 | use Any::Moose;
3 |
4 | with 'ChronoBit::StructClass';
5 |
6 | use Data::ParseBinary;
7 | use ChronoBit::Bitcoin;
8 | use ChronoBit::Proof;
9 |
10 | sub struct {
11 | return Struct($_[0],
12 | Magic("\xd4\x97\xcf\x52"),
13 | var_str('data'),
14 | var_int('timestamp'),
15 | ULInt32('timestamp_usec'),
16 | ChronoBit::Proof->struct('proof'),
17 | );
18 | }
19 |
20 | 1;
21 |
--------------------------------------------------------------------------------
/ChronoBit/ProofStep.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::ProofStep;
2 | use Any::Moose;
3 |
4 | with 'ChronoBit::StructClass';
5 |
6 | use Data::ParseBinary;
7 | use Digest::SHA;
8 |
9 | use ChronoBit::SHA;
10 | use ChronoBit::SHAState;
11 | use ChronoBit::Bitcoin;
12 | use ChronoBit::Util;
13 | use ChronoBit::P2Pool;
14 |
15 | sub struct {
16 | return Struct('step',
17 | var_int('type'), # 00 - normal step, 01 - reverse bytes
18 | If(sub { $_->ctx->{type} == 0 },
19 | Struct('normal',
20 | ChronoBit::SHAState->struct,
21 | var_bytes('prefix'),
22 | var_bytes('suffix'),
23 | ),
24 | ),
25 | );
26 | }
27 |
28 | has 'type' => (is => 'rw', default => 0);
29 | has 'normal' => (is => 'rw', isa => 'HashRef', default => sub { {
30 | state => ChronoBit::SHAState->new(len => 0, state => ''),
31 | prefix => '',
32 | suffix => '',
33 | } });
34 |
35 | sub BUILD {
36 | my ($self) = @_;
37 |
38 | die 'unknown proofstep type ' . $self->type unless($self->type == 0 ||
39 | $self->type == 1);
40 |
41 | # make sure there's a state, even if it's empty
42 | unless(exists $self->normal->{state}) {
43 | $self->normal->{state} = ChronoBit::SHAState->new(len => 0,
44 | state => '');
45 | }
46 | }
47 |
48 | # returns bytes for padding a state with the donation script
49 | sub _donation_pad {
50 | my ($self, $state_len) = @_;
51 |
52 | if($state_len % 64 != 0) {
53 | my $pad = $ChronoBit::P2Pool::gentx_before_refhash;
54 | return substr($pad,
55 | length($pad) - $state_len % 64
56 | );
57 | } else {
58 | return '';
59 | }
60 | }
61 |
62 | sub perform {
63 | my ($self, $buf) = @_;
64 |
65 | if($self->type == 0) {
66 | my $sha;
67 | my $state = $self->normal->{state};
68 | if($state->{len} > 0) {
69 | # if our length is shorter than sha's block, pad with
70 | # p2pool's donation address
71 | $state->{extra_data} = $self->_donation_pad($state->{len});
72 | $sha = ChronoBit::SHA->new_from_state($state);
73 | } else {
74 | $sha = Digest::SHA->new(256);
75 | }
76 |
77 | $sha->add($self->normal->{prefix} || '');
78 | $sha->add($buf);
79 | $sha->add($self->normal->{suffix} || '');
80 |
81 | return $sha->digest;
82 | } elsif($self->type == 1) {
83 | return scalar reverse $buf;
84 | } else {
85 | die "unknown type";
86 | }
87 | }
88 |
89 | sub explain {
90 | my ($self, $buf) = @_;
91 |
92 | my $out = '';
93 | if($self->type == 0) {
94 | if($self->normal->{state}->{len} > 0) {
95 | $out .= sprintf("Begin with SHA state %s len %d data %s\n",
96 | bin2hex($self->normal->{state}->{state}),
97 | $self->normal->{state}->{len},
98 | bin2hex($self->_donation_pad($self->normal->{state}->{len})),
99 | );
100 | }
101 | if($self->normal->{prefix}) {
102 | $out .= "Prepend bytes: " . bin2hex($self->normal->{prefix}) . "\n";
103 | }
104 | if($self->normal->{suffix}) {
105 | $out .= "Append bytes: " . bin2hex($self->normal->{suffix}) . "\n";
106 | }
107 | $out .= "Perform SHA-256 on the result. ";
108 | } elsif($self->type == 1) {
109 | $out = "Reverse all bytes. ";
110 | } else {
111 | die "unknown type";
112 | }
113 |
114 | my $res = $self->perform($buf);
115 | $out .= "Get " . bin2hex($res) . "\n";
116 |
117 | return ($res, $out);
118 | }
119 |
120 | 1;
121 |
--------------------------------------------------------------------------------
/ChronoBit/ProofStore.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::ProofStore;
2 | use Any::Moose;
3 |
4 | use IO::All;
5 |
6 | use ChronoBit::Util;
7 | use ChronoBit::ProofFile;
8 |
9 | has 'outdir' => (is => 'rw');
10 | has 'proofs' => (is => 'rw', isa => 'ArrayRef');
11 | has 'froms' => (is => 'rw', isa => 'HashRef'); # maps from -> { to => idx, ... }
12 | has 'tos' => (is => 'rw', isa => 'HashRef'); # maps to -> { from => idx, ... }
13 |
14 | # adds a proof to the store and returns number of proofs added (0 if it already existed)
15 | sub add {
16 | my ($self, $proof) = @_;
17 |
18 | unless(exists($self->froms->{$proof->from}->{$proof->to})) {
19 | my $idx = push(@{$self->proofs}, $proof) - 1;
20 | $self->froms->{$proof->from}->{$proof->to} = $idx;
21 | $self->tos->{$proof->to}->{$proof->from} = $idx;
22 | return 1;
23 | } else {
24 | return 0;
25 | }
26 | }
27 |
28 | # saves a proof to disk, returns a filename
29 | sub save {
30 | my ($self, $proof, $proof_data) = @_;
31 |
32 | my $time = time;
33 |
34 | my $data = ChronoBit::ProofFile->struct->build({
35 | data => $proof_data || '',
36 | timestamp => $time,
37 | timestamp_usec => 0,
38 | proof => $proof,
39 | });
40 |
41 | my $outfile = io->catfile($self->outdir, sprintf("%s-%s-%d-%d-%d.proof",
42 | bin2hex($proof->from), bin2hex($proof->to), $time, 0, length($data)
43 | ));
44 |
45 | $data > $outfile;
46 | $outfile->close;
47 |
48 | return $outfile->name;
49 | }
50 |
51 | 1;
52 |
--------------------------------------------------------------------------------
/ChronoBit/SHA.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::SHA;
2 | use Any::Moose;
3 |
4 | extends 'Digest::SHA::PurePerl';
5 | use Data::ParseBinary;
6 | use ChronoBit::SHAState;
7 |
8 | my $h_struct = Array(8, SBInt32());
9 |
10 | sub new_from_state {
11 | my ($class, $state) = @_;
12 |
13 | my $ret = $class->new(256);
14 | $ret->{H} = $h_struct->parse($state->state);
15 | $ret->{lenll} = $state->len * 8;
16 | $ret->{blockcnt} = ($state->len * 8) % 512;
17 | $ret->{block} = $state->extra_data;
18 |
19 | return $ret;
20 | }
21 |
22 | sub get_state {
23 | my ($self) = @_;
24 |
25 | return ChronoBit::SHAState->new(
26 | state => $h_struct->build($self->{H}),
27 | len => int($self->{lenll} / 8),
28 | extra_data => $self->{block},
29 | );
30 | }
31 |
32 | 1;
33 |
--------------------------------------------------------------------------------
/ChronoBit/SHAState.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::SHAState;
2 | use Any::Moose;
3 |
4 | with 'ChronoBit::StructClass';
5 |
6 | use Data::ParseBinary;
7 | use ChronoBit::Bitcoin;
8 |
9 | sub struct {
10 | return Struct('state',
11 | var_int('len'), # this is the digest length up to this state
12 | If(sub { $_->ctx->{len} > 0 },
13 | Bytes('state', 32),
14 | ),
15 | # we purposefully don't include extra_data as it's always 0
16 | # -- any real extra_data bytes can be in ProofStep's prefix.
17 | );
18 | }
19 |
20 | has 'state' => (is => 'rw');
21 | has 'len' => (is => 'rw');
22 | has 'extra_data' => (is => 'rw');
23 |
24 | 1;
25 |
--------------------------------------------------------------------------------
/ChronoBit/StructClass.pm:
--------------------------------------------------------------------------------
1 | # base class that wraps up the Data::ParseBinary and provides methods
2 | # for parse and build.
3 |
4 | package ChronoBit::StructClass;
5 | use Any::Moose 'Role';
6 |
7 | requires 'struct';
8 |
9 | sub dump {
10 | my ($self) = @_;
11 |
12 | return $self->struct->build($self);
13 | }
14 |
15 | sub new_from_binary {
16 | my ($class, $bytes) = @_;
17 |
18 | $class->new($class->struct->parse($bytes));
19 | }
20 |
21 | 1;
22 |
--------------------------------------------------------------------------------
/ChronoBit/Util.pm:
--------------------------------------------------------------------------------
1 | package ChronoBit::Util;
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use base 'Exporter';
7 | our @EXPORT = qw/hex2bin bin2hex/;
8 |
9 | sub hex2bin {
10 | return pack('(H2)*', unpack('(a2)*', $_[0]));
11 | }
12 |
13 | sub bin2hex {
14 | return join('', unpack('(H2)*', $_[0]));
15 | }
16 |
17 | 1;
18 |
--------------------------------------------------------------------------------
/README:
--------------------------------------------------------------------------------
1 | This is ChronoBit, a secure timestamper using P2Pool. It can create proofs
2 | that a given timestamped data existed before a confirmation date.
3 |
4 | Confirmation date is generally the one of the next Bitcoin block found by
5 | P2Pool. User's data is hashed, then the hash is put into P2Pool's share
6 | coinbase, and then all the following P2Pool shares are stacked on top of
7 | that share. Finally, some P2Pool share will become an actual bitcoin block,
8 | and everyone can confirm the timestamp of a bitcoin block using any bitcoin
9 | client or blockexplorer.
10 |
11 | If you know P2Pool's shares hashes and are sure they existed at the time
12 | they say they did, the proof's timestamp gets the granularity of P2Pool's
13 | shares; otherwise it has granularity that of the found Bitcoin block.
14 |
15 | For more info on P2Pool visit:
16 | http://p2pool.info/ (unofficial stats page)
17 | https://github.com/forrestv/p2pool (github project page)
18 |
19 | For more info on bitcoin, visit:
20 | http://bitcoin.org/
21 |
22 | INSTALLATION
23 | Currently none, just use the extracted .pl files and make sure configs
24 | are in current directory.
25 |
26 | The following CPAN modules will be required - get them via CPAN or your
27 | distro's package manager (if it has them) or otherwise make sure they're
28 | installed:
29 |
30 | AnyEvent
31 | AnyEvent::JSONRPC::HTTP::Client
32 | AnyEvent::JSONRPC::HTTP::Server
33 | Any::Moose
34 | Data::ParseBinary
35 | Digest::SHA
36 | Digest::SHA::PurePerl
37 | IO::All
38 | JSON::XS
39 | Log::Log4perl
40 | LWP::UserAgent
41 | YAML::Syck
42 |
43 | To create timestamps you'll also need to be mining on P2Pool, git commit
44 | 52d0f3357b or later.
45 |
46 | CONFIGURATION
47 | $ cp chronobit.conf-sample chronobit.conf
48 | $ cp log.conf-sample log.conf
49 | $ ed/vi/emacs/joe/nano/pico *.conf
50 |
51 | Please set your chainid as the lowest available number greater than 0,
52 | such that it doesn't collide with existing merged mining daemons.
53 | The only other merged mining chainid that I know of is that of namecoind
54 | and it's 1, so I set my chainid to 2.
55 |
56 | 'proofs' is a location (relative or absolute) to where you want your proofs
57 | of timestamp to be stored, please make sure that this directory exists
58 | (you'll have to create it manually).
59 |
60 | DOCUMENTATION
61 | Is currently held in this file, as well as at the top of each perl script
62 | in comments.
63 |
64 | USAGE
65 | CREATING A TIMESTAMP
66 | Run chronobitd.pl.
67 | Run P2Pool with --merged and point it at the running chronobitd.pl (you
68 | configured the port it listens on in chronobit.conf).
69 | P2Pool will start querying chronobit for hashes. Take your data, sha256
70 | it (e.g. via the commandline sha256sum utility). Give your hash to
71 | chronobitd like this:
72 |
73 | $ ./jsonrpc_client.pl http://localhost:8080 '["set_hash",""]'
74 |
75 | You should see something like:
76 |
77 | $VAR1 = bless( do{\(my $o = 1)}, 'JSON::XS::Boolean' );
78 |
79 | That's effectively a true value returned by chronobitd, acknowledging that
80 | it got your hash.
81 | Then wait for P2Pool to find a share (you have to be mining on P2Pool for
82 | this to work). When it does, chronobitd will log an INFO message saying
83 | something like "got p2pool share <...> for hash <...>". It will also store
84 | a proof from your hash to that share's hash in the proof directory.
85 |
86 | Chronobitd will continue to create proofs for each new P2Pool share found,
87 | in case the one found was orphan or dead. If you got your proof, you can
88 | prevent that by running:
89 |
90 | $ ./jsonrpc_client.pl http://localhost:8080 '["unset_hash"]'
91 |
92 | At any time you can also change the hash (with another set_hash) or check
93 | what hash is currently stored (with "debug").
94 |
95 | OK, now that we have a proof going from your data's hash up to a P2Pool's
96 | share hash, we need to create another proof from the P2Pool's share up
97 | to a bitcoin block. This is currently done manually. You'll have to wait
98 | for P2Pool to find a block, but not longer than until it forgets your
99 | share (which is something like 24 hours). Then you can create a proof
100 | between any 2 shares (a bitcoin block is also just a share):
101 |
102 | $ ./traverse_shares.pl
103 |
104 | That might take a while and will query p2pool for share data (using
105 | its address taken from chronobit.conf) extensively. When it's done,
106 | it'll save the proof to the usual location. You can then merge your
107 | original proof with any number of other proofs - in order to create
108 | one single proof for your data up to the bitcoin block:
109 |
110 | $ ./merge_proofs.pl [...]
111 |
112 | VERIFYING A TIMESTAMP'S PROOF
113 | Just run this:
114 |
115 | $ ./verify_proof.pl <
116 |
117 | Notice it takes the proof on stdin, not as argument. You can make this
118 | tool more verbose by giving it an argument (let's say --verbose) - it'll
119 | then explain each step of the proof.
120 |
121 | Each step effectively consists of one or more of:
122 | - beginning SHA state (this is effectively done by P2Pool in order to
123 | "compress" a number of bytes that are in front of the hash into
124 | a smaller state of SHA),
125 | - bytes to prepend,
126 | - the current data (current hash),
127 | - bytes to append.
128 | All this will be taken together and hashed. A step can also reverse bytes
129 | in the current hash.
130 |
131 | OPTIMIZING PROOF'S LENGTH
132 | It's possible to reduce the first proof's length. The "first proof"
133 | meaning the proof from your data to the p2pool share's hash. To do this,
134 | you start by getting the share's data. First you need to reverse the bytes
135 | of the share's hash, because p2pool interprets it backwards. Let's say
136 | your original $SHARE_HASH is the one you got from the proof filename, and
137 | it ends with a bunch of zeros. You can convert it to start with that bunch
138 | of zeroes instead with:
139 |
140 | $ P2POOL_SHARE_HASH=`echo $SHARE_HASH | xxd -r -ps | \
141 | ./reverse_bytes.pl | xxd -ps -c100`
142 |
143 | Then you build a short proof using p2pool's share_data from the previous
144 | share's hash to your share's hash:
145 |
146 | $ curl http://127.0.0.1:9332/web/share_data/$P2POOL_SHARE_HASH | \
147 | ./share2proof.pl
148 |
149 | Pay attention to the filename that share2proof created. It's the
150 | expected by shorten_proof_from_share.pl. The
151 | is simply the original proof created by chronobitd when it first got
152 | the share. Knowing this, you can run shorten_proof_from_share.pl and
153 | get the short version of your original proof.
154 |
155 | In future, it will be also possible to shorten the proofs from the p2pool
156 | share up to the bitcoin block by utilizing p2pool's far_share_hashes.
157 | That's on the TODO list.
158 |
159 | CONTACT
160 | You can find me on freenode irc channel #chronobit
161 |
162 | DONATIONS
163 | 1FCkd4x31nTDQjJGp5Wp86xMqBNsgFCAhf
164 |
165 | --
166 | vim: sw=2 ts=2 expandtab
167 |
--------------------------------------------------------------------------------
/TODO:
--------------------------------------------------------------------------------
1 | Plans for future:
2 |
3 | - number tests
4 | - PODify docs
5 | - write up the specification of the proof file (and make sure it's OK)
6 | - shorten Proof::new_from_share
7 | - get rid of blessing hacks for new_from_binary, perhaps by making the classes
8 | inherit Data::ParseBinary::Struct and/or adding more adapters
9 | - create a nicer framework for commandline tools
10 | - make commandline tools get actual commandline arguments
11 | - make the config file location more configurable
12 | - add a proof splitter (to split a long proof into shorter ones)
13 | - add a proof manager (that'll automatically find shares etc)
14 | - add a proper proof creator
15 | - use far_share_hash to jump by 100s to make proofs shorter
16 |
17 | Later future:
18 | - group up shares into merkle trees to reduce size of proofs
19 | - create "authorities" that'll sign merkle roots of such trees to prove
20 | that shares actually existed at said times - this will allow more
21 | granularity in the timestamps
22 | - create a p2p network where users can send data to be timestamped to miners,
23 | removing the need for everyone who wants to timestamp data to be a miner.
24 | - optimize it, maybe even rewrite parts in C
25 |
26 |
--------------------------------------------------------------------------------
/add_data_to_proof.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | # takes a proof (given as argument) and adds data from stdin as the
4 | # proof's data. Doesn't validate anything.
5 |
6 | use strict;
7 | use warnings;
8 |
9 | use IO::All;
10 | use YAML::Syck;
11 |
12 | use ChronoBit::Proof;
13 | use ChronoBit::ProofFile;
14 | use ChronoBit::ProofStore;
15 |
16 | print "Loading your proof, wait...\n";
17 | my $proof_file = ChronoBit::ProofFile->struct->parse(
18 | scalar io($ARGV[0])->slurp);
19 |
20 | # XXX: haxx
21 | my $proof = ChronoBit::Proof->new_from_binary(
22 | ChronoBit::Proof->struct->build($proof_file->{proof})
23 | );
24 |
25 | $| = 1;
26 | print "Go ahead and type your data\n";
27 | my $data = io('-')->slurp;
28 | print "Thanks, please wait till I save the proof...\n";
29 |
30 | my $cfg = LoadFile('chronobit.conf');
31 |
32 | my $ps = ChronoBit::ProofStore->new(outdir =>
33 | $cfg->{proofs},
34 | );
35 |
36 | my $filename = $ps->save($proof, $data);
37 | printf "Proof saved to $filename\n";
38 |
--------------------------------------------------------------------------------
/chronobit.conf-sample:
--------------------------------------------------------------------------------
1 | port: 8080
2 | chainid: 2
3 | log_conf: log.conf
4 | p2pool: http://127.0.0.1:9332
5 | proofs: proofs
6 |
--------------------------------------------------------------------------------
/chronobitd.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use AnyEvent;
7 | use JSON::XS;
8 | use AnyEvent::JSONRPC::HTTP::Server;
9 | use YAML::Syck;
10 | use Data::Dumper;
11 | use Log::Log4perl;
12 |
13 | use ChronoBit::Bitcoin;
14 | use ChronoBit::Util;
15 | use ChronoBit::JSONRPC;
16 |
17 | my $cfg = LoadFile('chronobit.conf');
18 | Log::Log4perl->init_and_watch($cfg->{log_conf}, 5);
19 | my $log = Log::Log4perl->get_logger;
20 |
21 | my $jsonrpc = ChronoBit::JSONRPC->new(cfg => $cfg);
22 |
23 | sub jsonrpc_handler {
24 | my ($method, $res_cv, @params) = @_;
25 |
26 | $res_cv->result($jsonrpc->$method(@params));
27 | }
28 |
29 | my %callbacks = map { my $m = $_; $m => sub { jsonrpc_handler($m, @_); } } $jsonrpc->all_methods();
30 |
31 | my $server = AnyEvent::JSONRPC::HTTP::Server->new( port => $cfg->{port}, host => '0.0.0.0' );
32 | $server->reg_cb(%callbacks);
33 |
34 | $log->info('starting');
35 | my $quit_program = AnyEvent->condvar;
36 | $quit_program->recv;
37 |
--------------------------------------------------------------------------------
/jsonrpc_client.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use AnyEvent;
7 | use JSON::XS;
8 | use AnyEvent::JSONRPC::HTTP::Client;
9 | use Data::Dumper;
10 |
11 | $Data::Dumper::Useqq = 1;
12 |
13 | my $client = AnyEvent::JSONRPC::HTTP::Client->new(
14 | url => $ARGV[0]
15 | );
16 |
17 | print Dumper($client->call(@{decode_json($ARGV[1])})->recv);
18 |
--------------------------------------------------------------------------------
/log.conf-sample:
--------------------------------------------------------------------------------
1 | log4perl.rootLogger = TRACE, A1
2 | log4perl.appender.A1 = Log::Log4perl::Appender::Screen
3 | log4perl.appender.A1.layout = Log::Log4perl::Layout::PatternLayout
4 | log4perl.appender.A1.layout.ConversionPattern=[%d %p %c] %m%n
5 |
--------------------------------------------------------------------------------
/merge_proofs.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | # merges all proofs given as args
4 |
5 | use strict;
6 | use warnings;
7 |
8 | use IO::All;
9 | use YAML::Syck;
10 |
11 | use ChronoBit::Proof;
12 | use ChronoBit::ProofFile;
13 | use ChronoBit::ProofStore;
14 |
15 | my @proof_file = map {
16 | ChronoBit::ProofFile->struct->parse(scalar io($_)->slurp);
17 | } @ARGV;
18 | my @proof = map {
19 | # XXX: haxx
20 | ChronoBit::Proof->new_from_binary(
21 | ChronoBit::Proof->struct->build($_->{proof})
22 | )
23 | } @proof_file;
24 |
25 | my $newproof = ChronoBit::Proof->new_merged(@proof);
26 |
27 | my $cfg = LoadFile('chronobit.conf');
28 |
29 | my $ps = ChronoBit::ProofStore->new(outdir =>
30 | $cfg->{proofs},
31 | );
32 |
33 | my $filename = $ps->save($newproof, $proof_file[0]->{data}); # TODO: keep timestamp too
34 | printf "Saved proof to $filename\n";
35 |
--------------------------------------------------------------------------------
/reverse_bytes.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use Data::Dumper;
7 | use IO::All;
8 |
9 | my $foo = io('-')->slurp;
10 |
11 | print scalar reverse $foo;
12 |
--------------------------------------------------------------------------------
/sample_proofs/hello_world.proof:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/goblin/chronobit/9c0899554a3f57abde812a0b9d35a5570c91e1c6/sample_proofs/hello_world.proof
--------------------------------------------------------------------------------
/share2proof.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | # takes binary share data on stdin (as returned by /web/share_data/share...)
4 | # and makes it into a proof (joining its parent's hash to this share's hash)
5 |
6 | use strict;
7 | use warnings;
8 |
9 | use IO::All;
10 | use YAML::Syck;
11 |
12 | use ChronoBit::P2Pool;
13 | use ChronoBit::Proof;
14 | use ChronoBit::ProofStore;
15 |
16 | my $data = io('-')->slurp;
17 | my $share = share->parse($data);
18 |
19 | my $proof = ChronoBit::Proof->new_from_share($share, '');
20 | $proof->to($proof->perform);
21 |
22 | my $cfg = LoadFile('chronobit.conf');
23 |
24 | my $ps = ChronoBit::ProofStore->new(outdir =>
25 | $cfg->{proofs},
26 | );
27 |
28 | my $filename = $ps->save($proof);
29 | printf "Saved proof to $filename\n";
30 |
--------------------------------------------------------------------------------
/shorten_proof_from_share.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | # usage: ./shorten_proof_from_share.pl
4 |
5 | # is a long proof made automatically by chronobitd from
6 | # getauxblock response. It's a proof from your original data up to the share's
7 | # hash.
8 | #
9 | # is a short proof made with share2proof.pl from share_data.
10 | # It's a proof from the previous share's hash to the data share's hash
11 | # (data share is the share that contains the originally timestamped data)
12 | #
13 | # Both proofs must arrive at the same hash (of p2pool share).
14 | #
15 | # The script will merge the 2 proofs to create a smaller proof for the original
16 | # hash (it'll output a shorter version of the first file).
17 |
18 | use strict;
19 | use warnings;
20 |
21 | use IO::All;
22 | use YAML::Syck;
23 |
24 | use ChronoBit::Proof;
25 | use ChronoBit::ProofFile;
26 | use ChronoBit::ProofStore;
27 | use ChronoBit::ProofStep;
28 |
29 | my @proof_file = map {
30 | ChronoBit::ProofFile->struct->parse(scalar io($_)->slurp);
31 | } @ARGV;
32 | my @proof = map {
33 | # XXX: haxx
34 | ChronoBit::Proof->new_from_binary(
35 | ChronoBit::Proof->struct->build($_->{proof})
36 | )
37 | } @proof_file;
38 | my $newproof = ChronoBit::Proof->new(
39 | from => $proof[0]->from,
40 | to => $proof[0]->to,
41 | );
42 |
43 | die "wrong proofs" unless($proof[0]->to eq $proof[1]->to);
44 |
45 | # first, copy all large proof's steps up to byte reversal.
46 | # Byte reversal gets us data that goes in the coinbase.
47 | my $ok = 0;
48 | for(my $i = 0; my $step = $proof[0]->step->[$i]; $i++) {
49 | $newproof->add_step($step);
50 | if($step->type == 1) {
51 | $ok = 1;
52 | last;
53 | }
54 | }
55 | die "no byte reversal?" unless $ok;
56 |
57 | # compute that coinbase
58 | my $coinbase = $newproof->perform;
59 |
60 | # this is the first step of shorter proof:
61 | my $step1 = $proof[1]->step->[0]->normal;
62 |
63 | # find me the position at which our coinbase starts in step1's suffix:
64 | die "wtf" unless(length($coinbase) == 32);
65 | my $pos = index($step1->{suffix}, $coinbase);
66 |
67 | # now create a step that'll put that coinbase in shorter proof's perspective
68 | $newproof->add_step(ChronoBit::ProofStep->new(normal => {
69 | prefix => $step1->{prefix} . $proof[1]->from . substr($step1->{suffix},
70 | 0, $pos),
71 | suffix => substr($step1->{suffix}, $pos + 32),
72 | }));
73 |
74 | # and copy all the remaining steps
75 | for(my $i = 1; $i < $proof[1]->len; $i++) {
76 | $newproof->add_step($proof[1]->step->[$i]);
77 | }
78 |
79 | my $cfg = LoadFile('chronobit.conf');
80 |
81 | my $ps = ChronoBit::ProofStore->new(outdir =>
82 | $cfg->{proofs},
83 | );
84 |
85 | my $filename = $ps->save($newproof, $proof_file[0]->{data}); # TODO: keep timestamp too
86 | printf "Saved proof to $filename\n";
87 |
--------------------------------------------------------------------------------
/t/chronobit_jsonrpc.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use JSON::XS;
7 | use Log::Log4perl qw(:easy);
8 |
9 | Log::Log4perl->easy_init($INFO);
10 |
11 | BEGIN { use_ok('ChronoBit::JSONRPC'); }
12 |
13 | my $j = ChronoBit::JSONRPC->new(cfg => { chainid => 2, proofs => 'foo' });
14 | is($j->curhash, undef);
15 |
16 | is_deeply($j->getauxblock(), { chainid => 2, hash => '00'x32, target => 'p2pool' });
17 | is_deeply($j->set_hash('1a'.'31'x31), JSON::XS::true);
18 | is($j->curhash, '1a'.'31'x31);
19 | is_deeply($j->getauxblock(), { chainid => 2, hash => ('31'x31 . '1a'), target => 'p2pool' });
20 |
21 | # TODO: test some PoWs
22 | # is_deeply($j->getauxblock('31'x31 . '1a', $
23 |
24 | is_deeply($j->unset_hash(), JSON::XS::true);
25 | is($j->curhash, undef);
26 | is_deeply($j->getauxblock(), { chainid => 2, hash => '00'x32, target => 'p2pool' });
27 |
28 | done_testing;
29 |
--------------------------------------------------------------------------------
/t/proof.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use JSON::XS;
7 | use ChronoBit::Bitcoin;
8 | use ChronoBit::P2Pool;
9 | use ChronoBit::Util;
10 |
11 | BEGIN { use_ok('ChronoBit::Proof'); }
12 |
13 | my $getauxblock_response = decode_json();
14 | my $p2pool_share = hex2bin();
15 |
16 | my $hash = scalar reverse hex2bin($getauxblock_response->[0]);
17 | my $aux_pow = aux_pow()->parse(hex2bin($getauxblock_response->[1]));
18 |
19 | my $proof = ChronoBit::Proof->new_aux2coinbase($hash, $aux_pow);
20 |
21 | my @proof_step_data = qw/
22 | 62bec4f577596e44ea8361ac937e86ddd138c70af1499e3af6d00fdd4b1ef230
23 | 30f21e4bdd0fd0f63a9e49f10ac738d1dd867e93ac6183ea446e5977f5c4be62
24 | 7f622456e0b9ce587556cc1d19f6c3e9b8cd3c947029c473dfdbd7723e025923
25 | 535c7202a304b93f5b4e71dbb0ce1e2f7505664ba693174ff70a82f291320561
26 | 0cf21aa00ed012fa9c963ec38062027c8d2d1fe194e508d937ee450000000000
27 | /;
28 |
29 | # it looks nicer in 'prove' when bin2hexed
30 | is(bin2hex($proof->from), bin2hex($hash));
31 | is(bin2hex($proof->to), $proof_step_data[0]);
32 | is(bin2hex($proof->perform), $proof_step_data[0]);
33 | is($proof->verify, 1);
34 |
35 | my @prooflist = ($proof);
36 |
37 | my $proof_bin = $proof->dump;
38 | is(bin2hex($proof_bin), '000000000000000000000000000000000000000000000000313370000000140062bec4f577596e44ea8361ac937e86ddd138c70af1499e3af6d00fdd4b1ef2300200000020ad176a9ba046ef19b44999bed63d090401a1148bdb8ac5c5ce76b2e0ad48938000000000');
39 |
40 | my $proof2 = ChronoBit::Proof->new_from_binary($proof_bin);
41 | is($proof2->dump, $proof_bin);
42 |
43 | $proof = ChronoBit::Proof->new_coinbase2gentx($aux_pow->{coinbase_txn});
44 | is(bin2hex($proof->from), $proof_step_data[1]);
45 | is(bin2hex($proof->to), $proof_step_data[2]);
46 | is(bin2hex($proof->perform), $proof_step_data[2]);
47 | is($proof->verify, 1);
48 | is(length $proof->dump, 7238);
49 |
50 | push @prooflist, $proof;
51 |
52 | $proof = ChronoBit::Proof->new_gentx2mrklroot($aux_pow);
53 | is(bin2hex($proof->from), $proof_step_data[2]);
54 | is(bin2hex($proof->to), $proof_step_data[3]);
55 | is(bin2hex($proof->perform), $proof_step_data[3]);
56 | is($proof->verify, 1);
57 |
58 | push @prooflist, $proof;
59 |
60 | $proof = ChronoBit::Proof->new_mrklroot2block($aux_pow->{parent_block});
61 | is(bin2hex($proof->from), $proof_step_data[3]);
62 | is(bin2hex($proof->to), $proof_step_data[4]);
63 | is(bin2hex($proof->perform), $proof_step_data[4]);
64 | is($proof->verify, 1);
65 |
66 | push @prooflist, $proof;
67 |
68 | $proof = ChronoBit::Proof->new_merged(@prooflist);
69 | is(bin2hex($proof->from), bin2hex($hash));
70 | is(bin2hex($proof->to), $proof_step_data[4]);
71 | is($proof->verify, 1);
72 |
73 | $proof_bin = $proof->dump;
74 | undef $proof;
75 | $proof2 = ChronoBit::Proof->new_from_binary($proof_bin);
76 | is(bin2hex($proof2->to), $proof_step_data[4]);
77 | is($proof2->verify, 1);
78 |
79 | # another set of tests for p2pool shares
80 | my $share = share->parse($p2pool_share);
81 |
82 | $proof = ChronoBit::Proof->new_from_share($share, hex2bin($proof_step_data[4]));
83 | is(bin2hex($proof->perform), $proof_step_data[4]);
84 | is($proof->verify, 1);
85 |
86 | done_testing;
87 |
88 | __DATA__
89 | 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90 | 04fddc0102a4a46ae7468a4b7036a00477bdaa9036d4f9e660a575b914c5020000000000007d678150ef75051a114287dc34d5b2500c94266520ba60cbaf94a030a47a14a6813a23b46f8f2500000000003803ea1c032cfabe6d6d30f21e4bdd0fd0f63a9e49f10ac738d1dd867e93ac6183ea446e5977f5c4be620200000000000000062f503253482f05e40bcd9c7a3ddca3446a6e36160495a78317fe1cb8f1cca020692a010000004801000513dceb70f26e94c3c5f46a605100e1bb54a082abc1d3e7a0591d4a00000000004a5c561b4a5c561b5e628150000006926898e2a06f0b7c4364cf4db5060121d544ec58d0ba363b941ab9a44a94d4fdf71b07d213ee1172fe8c4db63ef042509342c3aab34acf0f8f952bc588debb8c799c8d8c909848d0bfcb0caf36c55a101ba101f5f581f0b7383d7a2786ad2b0089042ccbb202d8cf953f945833c84189b707e0db2707474d25dce3c77f70b22d7ba204e1af622f5c266b00b6f2178be447e00b6e28d5448e2c46cf9089d939d9bdae8d48dfb6f6bc237a5e5fac3f464de8681ef530777bbe24ce477f13cdc4fdd81d47092544df014a9297b3edf37d984e880bbc7ce0cf87a66c9c1ca8d144efa29448404cc8d9a00bccdc80d40dbce7a8fb68ead50483b2bc3f4c520cb616049f9034
91 |
--------------------------------------------------------------------------------
/t/proofstep.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use ChronoBit::Bitcoin;
7 | use ChronoBit::Util;
8 | use ChronoBit::SHAState;
9 |
10 | BEGIN { use_ok('ChronoBit::ProofStep'); }
11 |
12 | my $test_msg1 = ;
13 | my $known_serialization = ;
14 | chomp $known_serialization;
15 |
16 | my $msg1 = substr($test_msg1, 0, 113);
17 | my $msg2 = substr($test_msg1, 113, 90);
18 | my $msg3 = substr($test_msg1, 203);
19 |
20 | my $ps = ChronoBit::ProofStep->new(
21 | normal => {
22 | state => ChronoBit::SHAState->new(len => 0, state => ''),
23 | prefix => $msg1,
24 | suffix => $msg3,
25 | },
26 | );
27 |
28 | is(bin2hex($ps->perform($msg2)),
29 | '35314b8ce740af950adbf892d62886f8e1ec5d5c197fdc9577479832bb5825a0');
30 |
31 | my $ps1_bin = $ps->dump;
32 | is(bin2hex($ps1_bin), $known_serialization);
33 |
34 | my $ps2 = ChronoBit::ProofStep->new_from_binary($ps1_bin);
35 | is($ps2->dump, $ps1_bin);
36 |
37 | done_testing;
38 |
39 | # the data is long enough to exceed 255 bytes in var_ints
40 |
41 | __DATA__
42 | Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque sit amet enim ipsum, sit amet elementum justo. Vivamus sed felis erat, ac convallis eros. Quisque nisi felis, dignissim a pulvinar id, sagittis ut ante. Aliquam erat volutpat. Fusce dolor lectus, porttitor nec tincidunt ut, adipiscing id magna. Nulla vel massa aliquam augue luctus suscipit non eu sapien. Pellentesque nulla nulla, varius a venenatis vitae, mattis ac odio. Vestibulum vitae nibh sit amet ipsum sodales cursus. Vivamus id lacus dolor. Donec vel quam enim. Ut vel dui non lectus lacinia iaculis. Curabitur ullamcorper malesuada metus eget molestie. Nunc vitae nisi eu mauris pellentesque tempor. Suspendisse tempor lobortis justo, sit amet bibendum augue feugiat eget. Curabitur faucibus sollicitudin arcu quis sodales. Nam blandit facilisis orci ut scelerisque. Aenean consectetur velit eget leo viverra in sollicitudin tortor placerat. Aliquam auctor diam dapibus sem bibendum eu posuere dui gravida. Ut vestibulum luctus laoreet. Donec et sollicitudin est. Suspendisse potenti. Nullam lorem odio, gravida vel egestas sit amet, accumsan non nulla. Etiam risus metus, venenatis id dictum eu, ultrices id nibh. Phasellus eu neque non ante malesuada congue. Praesent pharetra eleifend diam. Ut quis vehicula odio. Vestibulum lacinia leo at nisl tincidunt nec viverra arcu laoreet. Aenean ullamcorper hendrerit lobortis. Fusce sodales massa id nibh mattis luctus. Pellentesque non libero vel neque bibendum fermentum sed at justo. Aenean porta, erat et lobortis fermentum, felis massa mattis ligula, nec consectetur nibh ante at mi. Donec at massa dui. Integer vitae nunc a nulla condimentum faucibus. Donec nec est turpis, nec vulputate magna. Morbi semper elit et leo vehicula suscipit. Sed fringilla, mauris sit amet dictum porta, libero elit bibendum magna, cursus aliquet sapien arcu vel nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla eu dolor eget arcu luctus elementum. Proin vel lorem tellus, eget eleifend enim. Fusce sem dui, lacinia ut vulputate at, tempor aliquet lectus. Duis non diam vel eros tristique convallis. Phasellus quam ipsum, congue nec interdum in, sagittis ut est. Aenean pharetra fringilla mi, in molestie tellus laoreet semper. Proin a odio turpis, non lobortis justo. Mauris faucibus tortor sed arcu ullamcorper varius. Suspendisse potenti. Pellentesque pharetra posuere congue. Donec id nulla justo, ut tempus erat. Etiam eget placerat libero. Cras sit amet magna a velit pharetra mattis. Praesent dui mi, scelerisque vitae tincidunt vitae, bibendum eu sem. In hac habitasse platea dictumst. Morbi at consectetur est. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Mauris nulla massa, viverra non faucibus nec, ornare vel lectus. Etiam non neque ut diam iaculis consectetur. Nulla vitae erat dapibus nunc dapibus hendrerit. Nullam tempus lorem ut elit consequat in faucibus massa tincidunt. Ut nec auctor nulla. Mauris cursus adipiscing dignissim. Aenean pretium, eros egestas rutrum sollicitudin, turpis libero lobortis felis, quis fringilla ligula eros sit amet turpis. Nulla dapibus urna ac metus volutpat sed tristique nisi volutpat.
43 | 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44 |
--------------------------------------------------------------------------------
/t/sha.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use ChronoBit::Util;
7 |
8 | BEGIN { use_ok('ChronoBit::SHA'); }
9 | BEGIN { use_ok('ChronoBit::SHAState'); }
10 |
11 | my $test_msg1 = 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum';
12 |
13 | my $sha = ChronoBit::SHA->new(256);
14 | $sha->add($test_msg1);
15 | is($sha->digest, hex2bin('bfe8ee358697cbd746acd482c37891dca980bd0401d596dabf5551857b6b53a2'));
16 |
17 | $sha = ChronoBit::SHA->new(256);
18 | $sha->add(substr $test_msg1, 0, 133);
19 | $sha->add(substr $test_msg1, 133);
20 | is($sha->digest, hex2bin('bfe8ee358697cbd746acd482c37891dca980bd0401d596dabf5551857b6b53a2'));
21 |
22 | $sha = ChronoBit::SHA->new(256);
23 | $sha->add(substr $test_msg1, 0, 133);
24 | my $state = $sha->get_state;
25 | undef $sha;
26 | $sha = ChronoBit::SHA->new_from_state($state);
27 | $sha->add(substr $test_msg1, 133);
28 | is($sha->digest, hex2bin('bfe8ee358697cbd746acd482c37891dca980bd0401d596dabf5551857b6b53a2'));
29 |
30 | done_testing;
31 |
--------------------------------------------------------------------------------
/t/sha_state.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use ChronoBit::Util;
7 | BEGIN { use_ok('ChronoBit::SHA'); }
8 | BEGIN { use_ok('ChronoBit::SHAState'); }
9 |
10 | # OK, here's what p2pool gives:
11 | my $state = ChronoBit::SHAState->new(
12 | state => hex2bin(
13 | 'a1405e36d6b21fe6287e18765b5140590b7e34d6f52d8fbcd1d56dab1dcf9ad5'),
14 | len => 7494,
15 | extra_data => hex2bin('000000002120'),
16 | );
17 | my $sha = ChronoBit::SHA->new_from_state($state);
18 | $sha->add(hex2bin(
19 | '0b08c84e31867549f9189cb9c696d61916d3ffa9ac8fec4a1812deb7f10dac4200000000'
20 | ));
21 | is(bin2hex($sha->digest),
22 | '58ba6c61a3700085304d1cb5461a6237e43730745d04cf55f4a9b33da6132ac9');
23 |
24 | done_testing;
25 |
--------------------------------------------------------------------------------
/t/util.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | BEGIN { use_ok('ChronoBit::Util'); }
7 |
8 | my $test_msg1 = 'Lorem ipsum dolor sit amet';
9 | my $msg1_hex = '4c6f72656d20697073756d20646f6c6f722073697420616d6574';
10 |
11 | is(hex2bin($msg1_hex), $test_msg1);
12 | is(bin2hex($test_msg1), $msg1_hex);
13 |
14 | done_testing;
15 |
--------------------------------------------------------------------------------
/t/var_len.t:
--------------------------------------------------------------------------------
1 | use strict;
2 | use warnings;
3 |
4 | use Test::More;
5 |
6 | use ChronoBit::Util;
7 | BEGIN { use_ok('ChronoBit::Bitcoin'); }
8 |
9 | is(bin2hex(var_int->build(3)), '03');
10 | is(bin2hex(var_int->build(0xfc)), 'fc');
11 | is(bin2hex(var_int->build(0xfd)), 'fdfd00');
12 | is(bin2hex(var_int->build(0xfe)), 'fdfe00');
13 | is(bin2hex(var_int->build(0xffff)), 'fdffff');
14 | is(bin2hex(var_int->build(0x10000)), 'fe00000100');
15 | is(bin2hex(var_int->build(0xffffffff)), 'feffffffff');
16 | is(bin2hex(var_int->build(0xffffffff + 1)), 'ff0000000001000000');
17 |
18 | is(var_int->parse(hex2bin('03')), 3);
19 | is(var_int->parse(hex2bin('fc')), 0xfc);
20 | is(var_int->parse(hex2bin('fdfd00')), 0xfd);
21 | is(var_int->parse(hex2bin('fdfe00')), 0xfe);
22 | is(var_int->parse(hex2bin('fdffff')), 0xffff);
23 | is(var_int->parse(hex2bin('fe00000100')), 0x10000);
24 | is(var_int->parse(hex2bin('feffffffff')), 0xffffffff);
25 | is(var_int->parse(hex2bin('ff0000000001000000')), 0xffffffff + 1);
26 |
27 | is(bin2hex(var_str->build('dupa jeza')), '0964757061206a657a61');
28 | is(bin2hex(var_bytes->build('dupa jeza')), '0964757061206a657a61');
29 |
30 | is(var_str->parse(hex2bin('0964757061206a657a61')), 'dupa jeza');
31 | is(var_bytes->parse(hex2bin('0964757061206a657a61')), 'dupa jeza');
32 |
33 | done_testing;
34 |
35 |
--------------------------------------------------------------------------------
/traverse_shares.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | # $ ./traverse_shares.pl []
4 |
5 | # goes backwards from a later share's hash down to an earlier
6 | # share's hash
7 | #
8 | # creates a proof from to .
9 | #
10 | # if is not given, defaults to current best share hash.
11 | # byte order doesn't matter, script will reverse as necessary
12 |
13 | use strict;
14 | use warnings;
15 |
16 | use YAML::Syck;
17 | use JSON::XS;
18 | use LWP::UserAgent;
19 |
20 | use ChronoBit::P2Pool;
21 | use ChronoBit::Proof;
22 | use ChronoBit::ProofStore;
23 | use ChronoBit::Util;
24 |
25 | $| = 1;
26 | my $cfg = LoadFile('chronobit.conf');
27 | my $addr = $cfg->{p2pool};
28 | my $ua = LWP::UserAgent->new;
29 | $ua->timeout(5);
30 | my $json = JSON::XS->new->allow_nonref;
31 |
32 | my $cnt = 0;
33 | sub get {
34 | my $what = shift;
35 |
36 | print "[$cnt] getting $what...\n";
37 | my $res = $ua->get("$addr/$what");
38 | if($res->is_success) {
39 | return $res->decoded_content;
40 | } else {
41 | die $res->status_line;
42 | }
43 | }
44 |
45 | die "need argument" unless $ARGV[0];
46 |
47 | my $from;
48 | my $target;
49 | if($ARGV[1]) {
50 | $from = $ARGV[0];
51 | # reverse if needed (can safely assume the share will have a bunch
52 | # of zeroes, as it needs to be at least difficulty 1)
53 | # XXX: will fail once in a blue moon if it also has zeroes on the other side
54 | if(substr($from, 0, 8) ne '00000000') {
55 | $from = bin2hex(scalar reverse hex2bin($from));
56 | }
57 | $target = $ARGV[1];
58 | } else {
59 | $from = $json->decode(get("web/best_share_hash"));
60 | $target = $ARGV[0];
61 | }
62 |
63 | $target = hex2bin(lc $target);
64 |
65 | sub target {
66 | my $what = shift;
67 |
68 | return ($what eq $target) || ($what eq (scalar reverse $target));
69 | }
70 |
71 | my $cur_hash = $from;
72 | my $proof;
73 |
74 | while(!target(hex2bin($cur_hash))) {
75 | my $share = share->parse(get("web/share_data/$cur_hash"));
76 | my $cur_proof = ChronoBit::Proof->new_from_share($share,
77 | scalar reverse hex2bin($cur_hash)
78 | );
79 |
80 | if(defined $proof) {
81 | # printf "merging proof from %s to %s\n", bin2hex($cur_proof->from),
82 | # bin2hex($cur_proof->to);
83 | # printf " with from %s to %s\n", bin2hex($proof->from),
84 | # bin2hex($proof->to);
85 | $proof = ChronoBit::Proof->new_merged($cur_proof, $proof);
86 | } else {
87 | $proof = $cur_proof;
88 | }
89 |
90 | $cur_hash = bin2hex(scalar reverse $share->{contents}->{common}->
91 | {share_info}->{share_data}->{previous_share_hash});
92 | $cnt++;
93 | }
94 |
95 | print "Finished search, saving proof...\n";
96 |
97 | my $ps = ChronoBit::ProofStore->new(outdir => $cfg->{proofs});
98 | my $filename = $ps->save($proof);
99 |
100 | print "Saved proof to $filename\n";
101 |
--------------------------------------------------------------------------------
/verify_proof.pl:
--------------------------------------------------------------------------------
1 | #! /usr/bin/perl
2 |
3 | use strict;
4 | use warnings;
5 |
6 | use IO::All;
7 | use Digest::SHA qw/sha256/;
8 | use Data::ParseBinary;
9 |
10 | use ChronoBit::Bitcoin;
11 | use ChronoBit::ProofFile;
12 | use ChronoBit::Proof;
13 | use ChronoBit::Util;
14 |
15 | my $data = io('-')->slurp;
16 | my $proof_file = ChronoBit::ProofFile->struct->parse($data);
17 |
18 | # XXX: haxx
19 | my $proof = ChronoBit::Proof->new_from_binary(
20 | ChronoBit::Proof->struct->build($proof_file->{proof})
21 | );
22 |
23 | print $proof->explain if $ARGV[0];
24 | printf "proof from %s\n to %s\n", bin2hex($proof->from),
25 | bin2hex($proof->to);
26 | print 'data: <' . $proof_file->{data} . ">\n";
27 | print '(data ' . ((sha256($proof_file->{data}) eq $proof->from) ? 'does' :
28 | 'DOES NOT') . " map to proof's start)\n";
29 | print '(data+timestamp ' . ((sha256($proof_file->{data} .
30 | var_int->build($proof_file->{timestamp}) .
31 | ULInt32->build($proof_file->{timestamp_usec}
32 | )) eq $proof->from) ? 'does' : 'DOES NOT') . " map to proof's start)\n";
33 | printf "claims to be made on %s %06d usec GMT\n",
34 | scalar(gmtime($proof_file->{timestamp})),
35 | $proof_file->{timestamp_usec};
36 |
37 | my $res = $proof->verify;
38 | print $res ? "proof ok\n" : "PROOF INVALID\n";
39 |
40 | exit $res;
41 |
42 |
--------------------------------------------------------------------------------