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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

24,234 bytes · SHA-256 765260cf3f73c1c2… · View upstream ↗

1// Copyright (c) 2011-present 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 <arith_uint256.h>
6#include <test/util/common.h>
7#include <uint256.h>
8
9#include <boost/test/unit_test.hpp>
10
11#include <cmath>
12#include <cstdint>
13#include <iomanip>
14#include <limits>
15#include <sstream>
16#include <string>
17#include <vector>
18
19BOOST_AUTO_TEST_SUITE(arith_uint256_tests)
20
21/// Convert vector to arith_uint256, via uint256 blob
22static inline arith_uint256 arith_uint256V(const std::vector<unsigned char>& vch)
23{
24    return UintToArith256(uint256(vch));
25}
26const unsigned char R1Array[] =
27    "\x9c\x52\x4a\xdb\xcf\x56\x11\x12\x2b\x29\x12\x5e\x5d\x35\xd2\xd2"
28    "\x22\x81\xaa\xb5\x33\xf0\x08\x32\xd5\x56\xb1\xf9\xea\xe5\x1d\x7d";
29const char R1ArrayHex[] = "7D1DE5EAF9B156D53208F033B5AA8122D2d2355d5e12292b121156cfdb4a529c";
30const double R1Ldouble = 0.4887374590559308955; // R1L equals roughly R1Ldouble * 2^256
31const arith_uint256 R1L = arith_uint256V(std::vector<unsigned char>(R1Array,R1Array+32));
32const uint64_t R1LLow64 = 0x121156cfdb4a529cULL;
33
34const unsigned char R2Array[] =
35    "\x70\x32\x1d\x7c\x47\xa5\x6b\x40\x26\x7e\x0a\xc3\xa6\x9c\xb6\xbf"
36    "\x13\x30\x47\xa3\x19\x2d\xda\x71\x49\x13\x72\xf0\xb4\xca\x81\xd7";
37const arith_uint256 R2L = arith_uint256V(std::vector<unsigned char>(R2Array,R2Array+32));
38
39const unsigned char ZeroArray[] =
40    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
41    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
42const arith_uint256 ZeroL = arith_uint256V(std::vector<unsigned char>(ZeroArray,ZeroArray+32));
43
44const unsigned char OneArray[] =
45    "\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
46    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
47const arith_uint256 OneL = arith_uint256V(std::vector<unsigned char>(OneArray,OneArray+32));
48
49const unsigned char MaxArray[] =
50    "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
51    "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
52const arith_uint256 MaxL = arith_uint256V(std::vector<unsigned char>(MaxArray,MaxArray+32));
53
54const arith_uint256 HalfL = (OneL << 255);
55static std::string ArrayToString(const unsigned char A[], unsigned int width)
56{
57    std::stringstream Stream;
58    Stream << std::hex;
59    for (unsigned int i = 0; i < width; ++i)
60    {
61        Stream<<std::setw(2)<<std::setfill('0')<<(unsigned int)A[width-i-1];
62    }
63    return Stream.str();
64}
65
66BOOST_AUTO_TEST_CASE( basics ) // constructors, equality, inequality
67{
68    BOOST_CHECK(1 == 0+1);
69    // constructor arith_uint256(vector<char>):
70    BOOST_CHECK(R1L.ToString() == ArrayToString(R1Array,32));
71    BOOST_CHECK(R2L.ToString() == ArrayToString(R2Array,32));
72    BOOST_CHECK(ZeroL.ToString() == ArrayToString(ZeroArray,32));
73    BOOST_CHECK(OneL.ToString() == ArrayToString(OneArray,32));
74    BOOST_CHECK(MaxL.ToString() == ArrayToString(MaxArray,32));
75    BOOST_CHECK(OneL.ToString() != ArrayToString(ZeroArray,32));
76
77    // == and !=
78    BOOST_CHECK(R1L != R2L);
79    BOOST_CHECK(ZeroL != OneL);
80    BOOST_CHECK(OneL != ZeroL);
81    BOOST_CHECK(MaxL != ZeroL);
82    BOOST_CHECK(~MaxL == ZeroL);
83    BOOST_CHECK( ((R1L ^ R2L) ^ R1L) == R2L);
84
85    uint64_t Tmp64 = 0xc4dab720d9c7acaaULL;
86    for (unsigned int i = 0; i < 256; ++i)
87    {
88        BOOST_CHECK(ZeroL != (OneL << i));
89        BOOST_CHECK((OneL << i) != ZeroL);
90        BOOST_CHECK(R1L != (R1L ^ (OneL << i)));
91        BOOST_CHECK(((arith_uint256(Tmp64) ^ (OneL << i) ) != Tmp64 ));
92    }
93    BOOST_CHECK(ZeroL == (OneL << 256));
94
95    // Construct from hex string
96    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(R1L.ToString()).value()), R1L);
97    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(R2L.ToString()).value()), R2L);
98    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(ZeroL.ToString()).value()), ZeroL);
99    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(OneL.ToString()).value()), OneL);
100    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(MaxL.ToString()).value()), MaxL);
101    BOOST_CHECK_EQUAL(UintToArith256(uint256::FromHex(R1ArrayHex).value()), R1L);
102
103    // Copy constructor
104    BOOST_CHECK(arith_uint256(R1L) == R1L);
105    BOOST_CHECK((arith_uint256(R1L^R2L)^R2L) == R1L);
106    BOOST_CHECK(arith_uint256(ZeroL) == ZeroL);
107    BOOST_CHECK(arith_uint256(OneL) == OneL);
108
109    // uint64_t constructor
110    BOOST_CHECK_EQUAL(R1L & arith_uint256{0xffffffffffffffff}, arith_uint256{R1LLow64});
111    BOOST_CHECK_EQUAL(ZeroL, arith_uint256{0});
112    BOOST_CHECK_EQUAL(OneL, arith_uint256{1});
113    BOOST_CHECK_EQUAL(arith_uint256{0xffffffffffffffff}, arith_uint256{0xffffffffffffffffULL});
114
115    // Assignment (from base_uint)
116    arith_uint256 tmpL = ~ZeroL; BOOST_CHECK(tmpL == ~ZeroL);
117    tmpL = ~OneL; BOOST_CHECK(tmpL == ~OneL);
118    tmpL = ~R1L; BOOST_CHECK(tmpL == ~R1L);
119    tmpL = ~R2L; BOOST_CHECK(tmpL == ~R2L);
120    tmpL = ~MaxL; BOOST_CHECK(tmpL == ~MaxL);
121}
122
123static void shiftArrayRight(unsigned char* to, const unsigned char* from, unsigned int arrayLength, unsigned int bitsToShift)
124{
125    for (unsigned int T=0; T < arrayLength; ++T)
126    {
127        unsigned int F = (T+bitsToShift/8);
128        if (F < arrayLength)
129            to[T] = uint8_t(from[F] >> (bitsToShift % 8));
130        else
131            to[T] = 0;
132        if (F + 1 < arrayLength)
133            to[T] |= uint8_t(from[(F + 1)] << (8 - bitsToShift % 8));
134    }
135}
136
137static void shiftArrayLeft(unsigned char* to, const unsigned char* from, unsigned int arrayLength, unsigned int bitsToShift)
138{
139    for (unsigned int T=0; T < arrayLength; ++T)
140    {
141        if (T >= bitsToShift/8)
142        {
143            unsigned int F = T-bitsToShift/8;
144            to[T] = uint8_t(from[F] << (bitsToShift % 8));
145            if (T >= bitsToShift/8+1)
146                to[T] |= uint8_t(from[F - 1] >> (8 - bitsToShift % 8));
147        }
148        else {
149            to[T] = 0;
150        }
151    }
152}
153
154BOOST_AUTO_TEST_CASE( shifts ) { // "<<"  ">>"  "<<="  ">>="
155    unsigned char TmpArray[32];
156    arith_uint256 TmpL;
157    for (unsigned int i = 0; i < 256; ++i)
158    {
159        shiftArrayLeft(TmpArray, OneArray, 32, i);
160        BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (OneL << i));
161        TmpL = OneL; TmpL <<= i;
162        BOOST_CHECK(TmpL == (OneL << i));
163        BOOST_CHECK((HalfL >> (255-i)) == (OneL << i));
164        TmpL = HalfL; TmpL >>= (255-i);
165        BOOST_CHECK(TmpL == (OneL << i));
166
167        shiftArrayLeft(TmpArray, R1Array, 32, i);
168        BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (R1L << i));
169        TmpL = R1L; TmpL <<= i;
170        BOOST_CHECK(TmpL == (R1L << i));
171
172        shiftArrayRight(TmpArray, R1Array, 32, i);
173        BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (R1L >> i));
174        TmpL = R1L; TmpL >>= i;
175        BOOST_CHECK(TmpL == (R1L >> i));
176
177        shiftArrayLeft(TmpArray, MaxArray, 32, i);
178        BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (MaxL << i));
179        TmpL = MaxL; TmpL <<= i;
180        BOOST_CHECK(TmpL == (MaxL << i));
181
182        shiftArrayRight(TmpArray, MaxArray, 32, i);
183        BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (MaxL >> i));
184        TmpL = MaxL; TmpL >>= i;
185        BOOST_CHECK(TmpL == (MaxL >> i));
186    }
187    arith_uint256 c1L = arith_uint256(0x0123456789abcdefULL);
188    arith_uint256 c2L = c1L << 128;
189    for (unsigned int i = 0; i < 128; ++i) {
190        BOOST_CHECK((c1L << i) == (c2L >> (128-i)));
191    }
192    for (unsigned int i = 128; i < 256; ++i) {
193        BOOST_CHECK((c1L << i) == (c2L << (i-128)));
194    }
195}
196
197BOOST_AUTO_TEST_CASE( unaryOperators ) // !    ~    -
198{
199    BOOST_CHECK(~ZeroL == MaxL);
200
201    unsigned char TmpArray[32];
202    for (unsigned int i = 0; i < 32; ++i) { TmpArray[i] = uint8_t(~R1Array[i]); }
203    BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (~R1L));
204
205    BOOST_CHECK(-ZeroL == ZeroL);
206    BOOST_CHECK(-R1L == (~R1L)+1);
207    for (unsigned int i = 0; i < 256; ++i)
208        BOOST_CHECK(-(OneL<<i) == (MaxL << i));
209}
210
211
212// Check if doing _A_ _OP_ _B_ results in the same as applying _OP_ onto each
213// element of Aarray and Barray, and then converting the result into an arith_uint256.
214#define CHECKBITWISEOPERATOR(_A_,_B_,_OP_)                              \
215    for (unsigned int i = 0; i < 32; ++i) { TmpArray[i] = uint8_t(_A_##Array[i] _OP_ _B_##Array[i]); } \
216    BOOST_CHECK(arith_uint256V(std::vector<unsigned char>(TmpArray,TmpArray+32)) == (_A_##L _OP_ _B_##L));
217
218#define CHECKASSIGNMENTOPERATOR(_A_,_B_,_OP_)                           \
219    TmpL = _A_##L; TmpL _OP_##= _B_##L; BOOST_CHECK(TmpL == (_A_##L _OP_ _B_##L));
220
221BOOST_AUTO_TEST_CASE( bitwiseOperators )
222{
223    unsigned char TmpArray[32];
224
225    CHECKBITWISEOPERATOR(R1,R2,|)
226    CHECKBITWISEOPERATOR(R1,R2,^)
227    CHECKBITWISEOPERATOR(R1,R2,&)
228    CHECKBITWISEOPERATOR(R1,Zero,|)
229    CHECKBITWISEOPERATOR(R1,Zero,^)
230    CHECKBITWISEOPERATOR(R1,Zero,&)
231    CHECKBITWISEOPERATOR(R1,Max,|)
232    CHECKBITWISEOPERATOR(R1,Max,^)
233    CHECKBITWISEOPERATOR(R1,Max,&)
234    CHECKBITWISEOPERATOR(Zero,R1,|)
235    CHECKBITWISEOPERATOR(Zero,R1,^)
236    CHECKBITWISEOPERATOR(Zero,R1,&)
237    CHECKBITWISEOPERATOR(Max,R1,|)
238    CHECKBITWISEOPERATOR(Max,R1,^)
239    CHECKBITWISEOPERATOR(Max,R1,&)
240
241    arith_uint256 TmpL;
242    CHECKASSIGNMENTOPERATOR(R1,R2,|)
243    CHECKASSIGNMENTOPERATOR(R1,R2,^)
244    CHECKASSIGNMENTOPERATOR(R1,R2,&)
245    CHECKASSIGNMENTOPERATOR(R1,Zero,|)
246    CHECKASSIGNMENTOPERATOR(R1,Zero,^)
247    CHECKASSIGNMENTOPERATOR(R1,Zero,&)
248    CHECKASSIGNMENTOPERATOR(R1,Max,|)
249    CHECKASSIGNMENTOPERATOR(R1,Max,^)
250    CHECKASSIGNMENTOPERATOR(R1,Max,&)

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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