Branch data Line data Source code
1 : : // Copyright (c) 2020-2021 The Bitcoin Core developers
2 : : // Distributed under the MIT software license, see the accompanying
3 : : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 : :
5 : : #include <chainparams.h>
6 : : #include <key.h>
7 : : #include <psbt.h>
8 : : #include <pubkey.h>
9 : : #include <script/keyorigin.h>
10 : : #include <script/sign.h>
11 : : #include <script/signingprovider.h>
12 : : #include <streams.h>
13 : : #include <test/fuzz/FuzzedDataProvider.h>
14 : : #include <test/fuzz/fuzz.h>
15 : : #include <test/fuzz/util.h>
16 : : #include <util/chaintype.h>
17 [ + - ]: 2 : #include <util/translation.h>
18 [ + - ]: 2 :
19 : : #include <cassert>
20 : : #include <cstdint>
21 : : #include <iostream>
22 : : #include <map>
23 : : #include <optional>
24 : : #include <string>
25 : : #include <vector>
26 : :
27 : 2 : void initialize_script_sign()
28 : : {
29 : 0 : ECC_Start();
30 : 0 : SelectParams(ChainType::REGTEST);
31 : 0 : }
32 : :
33 [ + - - + ]: 4 : FUZZ_TARGET(script_sign, .init = initialize_script_sign)
34 : : {
35 : 0 : FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
36 : 0 : const std::vector<uint8_t> key = ConsumeRandomLengthByteVector(fuzzed_data_provider, 128);
37 : :
38 : : {
39 : 0 : DataStream stream{ConsumeDataStream(fuzzed_data_provider)};
40 [ # # # # ]: 0 : CDataStream random_data_stream{stream, SER_NETWORK, INIT_PROTO_VERSION}; // temporary copy, to be removed along with the version flag SERIALIZE_TRANSACTION_NO_WITNESS
41 : 0 : std::map<CPubKey, KeyOriginInfo> hd_keypaths;
42 : : try {
43 [ # # ]: 0 : DeserializeHDKeypaths(random_data_stream, key, hd_keypaths);
44 [ # # ]: 0 : } catch (const std::ios_base::failure&) {
45 [ # # ]: 0 : }
46 [ # # ]: 0 : CDataStream serialized{SER_NETWORK, PROTOCOL_VERSION};
47 [ # # # # : 0 : SerializeHDKeypaths(serialized, hd_keypaths, CompactSizeWriter(fuzzed_data_provider.ConsumeIntegral<uint8_t>()));
# # ]
48 : 0 : }
49 : :
50 : : {
51 : 0 : std::map<CPubKey, KeyOriginInfo> hd_keypaths;
52 [ # # # # : 0 : LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
# # ]
53 : 0 : const std::optional<CPubKey> pub_key = ConsumeDeserializable<CPubKey>(fuzzed_data_provider);
54 [ # # ]: 0 : if (!pub_key) {
55 : 0 : break;
56 : : }
57 : 0 : const std::optional<KeyOriginInfo> key_origin_info = ConsumeDeserializable<KeyOriginInfo>(fuzzed_data_provider);
58 [ # # ]: 0 : if (!key_origin_info) {
59 : 0 : break;
60 : : }
61 [ # # # # : 0 : hd_keypaths[*pub_key] = *key_origin_info;
# # # # ]
62 [ # # ]: 0 : }
63 [ # # ]: 0 : CDataStream serialized{SER_NETWORK, PROTOCOL_VERSION};
64 : : try {
65 [ # # # # : 0 : SerializeHDKeypaths(serialized, hd_keypaths, CompactSizeWriter(fuzzed_data_provider.ConsumeIntegral<uint8_t>()));
# # ]
66 [ # # ]: 0 : } catch (const std::ios_base::failure&) {
67 [ # # ]: 0 : }
68 : 0 : std::map<CPubKey, KeyOriginInfo> deserialized_hd_keypaths;
69 : : try {
70 [ # # ]: 0 : DeserializeHDKeypaths(serialized, key, hd_keypaths);
71 [ # # ]: 0 : } catch (const std::ios_base::failure&) {
72 [ # # ]: 0 : }
73 [ # # ]: 0 : assert(hd_keypaths.size() >= deserialized_hd_keypaths.size());
74 : 2 : }
75 : :
76 : : {
77 [ # # ]: 0 : SignatureData signature_data_1{ConsumeScript(fuzzed_data_provider)};
78 [ # # ]: 0 : SignatureData signature_data_2{ConsumeScript(fuzzed_data_provider)};
79 [ # # # # ]: 0 : signature_data_1.MergeSignatureData(signature_data_2);
80 : 0 : }
81 : :
82 : 0 : FillableSigningProvider provider;
83 : 0 : CKey k = ConsumePrivateKey(fuzzed_data_provider);
84 [ # # # # ]: 0 : if (k.IsValid()) {
85 [ # # ]: 0 : provider.AddKey(k);
86 : 0 : }
87 : :
88 : : {
89 : 0 : const std::optional<CMutableTransaction> mutable_transaction = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider);
90 : 0 : const std::optional<CTxOut> tx_out = ConsumeDeserializable<CTxOut>(fuzzed_data_provider);
91 [ # # ]: 0 : const unsigned int n_in = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
92 [ # # # # : 0 : if (mutable_transaction && tx_out && mutable_transaction->vin.size() > n_in) {
# # # # ]
93 [ # # # # : 0 : SignatureData signature_data_1 = DataFromTransaction(*mutable_transaction, n_in, *tx_out);
# # ]
94 [ # # ]: 0 : CTxIn input;
95 [ # # ]: 0 : UpdateInput(input, signature_data_1);
96 : 0 : const CScript script = ConsumeScript(fuzzed_data_provider);
97 [ # # ]: 0 : SignatureData signature_data_2{script};
98 [ # # # # ]: 0 : signature_data_1.MergeSignatureData(signature_data_2);
99 : 0 : }
100 [ # # ]: 0 : if (mutable_transaction) {
101 [ # # # # ]: 0 : CTransaction tx_from{*mutable_transaction};
102 [ # # ]: 0 : CMutableTransaction tx_to;
103 : 0 : const std::optional<CMutableTransaction> opt_tx_to = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider);
104 [ # # ]: 0 : if (opt_tx_to) {
105 [ # # # # ]: 0 : tx_to = *opt_tx_to;
106 : 0 : }
107 [ # # ]: 0 : CMutableTransaction script_tx_to = tx_to;
108 [ # # ]: 0 : CMutableTransaction sign_transaction_tx_to = tx_to;
109 [ # # # # ]: 0 : if (n_in < tx_to.vin.size() && tx_to.vin[n_in].prevout.n < tx_from.vout.size()) {
110 [ # # ]: 0 : SignatureData empty;
111 [ # # # # ]: 0 : (void)SignSignature(provider, tx_from, tx_to, n_in, fuzzed_data_provider.ConsumeIntegral<int>(), empty);
112 : 0 : }
113 [ # # ]: 0 : if (n_in < script_tx_to.vin.size()) {
114 [ # # ]: 0 : SignatureData empty;
115 [ # # # # ]: 0 : (void)SignSignature(provider, ConsumeScript(fuzzed_data_provider), script_tx_to, n_in, ConsumeMoney(fuzzed_data_provider), fuzzed_data_provider.ConsumeIntegral<int>(), empty);
116 [ # # # # ]: 0 : MutableTransactionSignatureCreator signature_creator{tx_to, n_in, ConsumeMoney(fuzzed_data_provider), fuzzed_data_provider.ConsumeIntegral<int>()};
117 : 0 : std::vector<unsigned char> vch_sig;
118 [ # # ]: 0 : CKeyID address;
119 [ # # # # ]: 0 : if (fuzzed_data_provider.ConsumeBool()) {
120 [ # # # # ]: 0 : if (k.IsValid()) {
121 [ # # # # ]: 0 : address = k.GetPubKey().GetID();
122 : 0 : }
123 : 0 : } else {
124 [ # # ]: 0 : address = CKeyID{ConsumeUInt160(fuzzed_data_provider)};
125 : : }
126 [ # # # # ]: 0 : (void)signature_creator.CreateSig(provider, vch_sig, address, ConsumeScript(fuzzed_data_provider), fuzzed_data_provider.PickValueInArray({SigVersion::BASE, SigVersion::WITNESS_V0}));
127 : 0 : }
128 : 0 : std::map<COutPoint, Coin> coins;
129 [ # # # # : 0 : LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
# # ]
130 : 0 : const std::optional<COutPoint> outpoint = ConsumeDeserializable<COutPoint>(fuzzed_data_provider);
131 [ # # ]: 0 : if (!outpoint) {
132 : 0 : break;
133 : : }
134 : 0 : const std::optional<Coin> coin = ConsumeDeserializable<Coin>(fuzzed_data_provider);
135 [ # # ]: 0 : if (!coin) {
136 : 0 : break;
137 : : }
138 [ # # # # : 0 : coins[*outpoint] = *coin;
# # # # ]
139 [ # # ]: 0 : }
140 : 0 : std::map<int, bilingual_str> input_errors;
141 [ # # # # ]: 0 : (void)SignTransaction(sign_transaction_tx_to, &provider, coins, fuzzed_data_provider.ConsumeIntegral<int>(), input_errors);
142 : 0 : }
143 : 0 : }
144 : :
145 : : {
146 [ # # ]: 0 : SignatureData signature_data_1;
147 [ # # ]: 0 : (void)ProduceSignature(provider, DUMMY_SIGNATURE_CREATOR, ConsumeScript(fuzzed_data_provider), signature_data_1);
148 [ # # ]: 0 : SignatureData signature_data_2;
149 [ # # ]: 0 : (void)ProduceSignature(provider, DUMMY_MAXIMUM_SIGNATURE_CREATOR, ConsumeScript(fuzzed_data_provider), signature_data_2);
150 : 0 : }
151 : 0 : }
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