Browse Source

move rand functions from util to new random.h/.cpp

pull/1/head
Philip Kaufmann 9 years ago
parent
commit
6354935c48
  1. 6
      src/Makefile.am
  2. 1
      src/addrman.h
  3. 1
      src/chainparams.cpp
  4. 2
      src/net.h
  5. 140
      src/random.cpp
  6. 49
      src/random.h
  7. 8
      src/script.cpp
  8. 8
      src/test/canonical_tests.cpp
  9. 1
      src/test/crypto_tests.cpp
  10. 1
      src/test/mruset_tests.cpp
  11. 16
      src/test/sighash_tests.cpp
  12. 7
      src/test/skiplist_tests.cpp
  13. 4
      src/test/test_bitcoin.cpp
  14. 1
      src/test/util_tests.cpp
  15. 109
      src/util.cpp
  16. 51
      src/util.h

6
src/Makefile.am

@ -91,6 +91,7 @@ BITCOIN_CORE_H = \ @@ -91,6 +91,7 @@ BITCOIN_CORE_H = \
noui.h \
pow.h \
protocol.h \
random.h \
rpcclient.h \
rpcprotocol.h \
rpcserver.h \
@ -197,14 +198,15 @@ libbitcoin_common_a_SOURCES = \ @@ -197,14 +198,15 @@ libbitcoin_common_a_SOURCES = \
# backward-compatibility objects and their sanity checks are linked.
libbitcoin_util_a_CPPFLAGS = $(BITCOIN_INCLUDES)
libbitcoin_util_a_SOURCES = \
compat/glibc_sanity.cpp \
compat/glibcxx_sanity.cpp \
chainparamsbase.cpp \
random.cpp \
rpcprotocol.cpp \
sync.cpp \
uint256.cpp \
util.cpp \
version.cpp \
compat/glibc_sanity.cpp \
compat/glibcxx_sanity.cpp \
$(BITCOIN_CORE_H)
if GLIBC_BACK_COMPAT

1
src/addrman.h

@ -7,6 +7,7 @@ @@ -7,6 +7,7 @@
#include "netbase.h"
#include "protocol.h"
#include "random.h"
#include "sync.h"
#include "timedata.h"
#include "util.h"

1
src/chainparams.cpp

@ -6,6 +6,7 @@ @@ -6,6 +6,7 @@
#include "chainparams.h"
#include "assert.h"
#include "random.h"
#include "util.h"
#include <boost/assign/list_of.hpp>

2
src/net.h

@ -13,6 +13,7 @@ @@ -13,6 +13,7 @@
#include "mruset.h"
#include "netbase.h"
#include "protocol.h"
#include "random.h"
#include "sync.h"
#include "uint256.h"
#include "util.h"
@ -26,7 +27,6 @@ @@ -26,7 +27,6 @@
#include <boost/foreach.hpp>
#include <boost/signals2/signal.hpp>
#include <openssl/rand.h>
class CAddrMan;
class CBlockIndex;

140
src/random.cpp

@ -0,0 +1,140 @@ @@ -0,0 +1,140 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "random.h"
#ifdef WIN32
#include "compat.h" // for Windows API
#endif
#include "util.h" // for LogPrint()
#ifndef WIN32
#include <sys/time.h>
#endif
#include <cstring> // for memset()
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/rand.h>
static inline int64_t GetPerformanceCounter()
{
int64_t nCounter = 0;
#ifdef WIN32
QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
#else
timeval t;
gettimeofday(&t, NULL);
nCounter = (int64_t)(t.tv_sec * 1000000 + t.tv_usec);
#endif
return nCounter;
}
void RandAddSeed()
{
// Seed with CPU performance counter
int64_t nCounter = GetPerformanceCounter();
RAND_add(&nCounter, sizeof(nCounter), 1.5);
memset(&nCounter, 0, sizeof(nCounter));
}
void RandAddSeedPerfmon()
{
RandAddSeed();
// This can take up to 2 seconds, so only do it every 10 minutes
static int64_t nLastPerfmon;
if (GetTime() < nLastPerfmon + 10 * 60)
return;
nLastPerfmon = GetTime();
#ifdef WIN32
// Don't need this on Linux, OpenSSL automatically uses /dev/urandom
// Seed with the entire set of perfmon data
std::vector <unsigned char> vData(250000,0);
long ret = 0;
unsigned long nSize = 0;
const size_t nMaxSize = 10000000; // Bail out at more than 10MB of performance data
while (true)
{
nSize = vData.size();
ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, begin_ptr(vData), &nSize);
if (ret != ERROR_MORE_DATA || vData.size() >= nMaxSize)
break;
vData.resize(std::max((vData.size()*3)/2, nMaxSize)); // Grow size of buffer exponentially
}
RegCloseKey(HKEY_PERFORMANCE_DATA);
if (ret == ERROR_SUCCESS)
{
RAND_add(begin_ptr(vData), nSize, nSize/100.0);
OPENSSL_cleanse(begin_ptr(vData), nSize);
LogPrint("rand", "%s: %lu bytes\n", __func__, nSize);
} else {
static bool warned = false; // Warn only once
if (!warned)
{
LogPrintf("%s: Warning: RegQueryValueExA(HKEY_PERFORMANCE_DATA) failed with code %i\n", __func__, ret);
warned = true;
}
}
#endif
}
bool GetRandBytes(unsigned char *buf, int num)
{
if (RAND_bytes(buf, num) != 1) {
LogPrintf("%s: OpenSSL RAND_bytes() failed with error: %s\n", __func__, ERR_error_string(ERR_get_error(), NULL));
return false;
}
return true;
}
uint64_t GetRand(uint64_t nMax)
{
if (nMax == 0)
return 0;
// The range of the random source must be a multiple of the modulus
// to give every possible output value an equal possibility
uint64_t nRange = (std::numeric_limits<uint64_t>::max() / nMax) * nMax;
uint64_t nRand = 0;
do {
GetRandBytes((unsigned char*)&nRand, sizeof(nRand));
} while (nRand >= nRange);
return (nRand % nMax);
}
int GetRandInt(int nMax)
{
return GetRand(nMax);
}
uint256 GetRandHash()
{
uint256 hash;
GetRandBytes((unsigned char*)&hash, sizeof(hash));
return hash;
}
uint32_t insecure_rand_Rz = 11;
uint32_t insecure_rand_Rw = 11;
void seed_insecure_rand(bool fDeterministic)
{
// The seed values have some unlikely fixed points which we avoid.
if(fDeterministic)
{
insecure_rand_Rz = insecure_rand_Rw = 11;
} else {
uint32_t tmp;
do {
GetRandBytes((unsigned char*)&tmp, 4);
} while(tmp == 0 || tmp == 0x9068ffffU);
insecure_rand_Rz = tmp;
do {
GetRandBytes((unsigned char*)&tmp, 4);
} while(tmp == 0 || tmp == 0x464fffffU);
insecure_rand_Rw = tmp;
}
}

49
src/random.h

@ -0,0 +1,49 @@ @@ -0,0 +1,49 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_RANDOM_H
#define BITCOIN_RANDOM_H
#include "uint256.h"
#include <stdint.h>
/**
* Seed OpenSSL PRNG with additional entropy data
*/
void RandAddSeed();
void RandAddSeedPerfmon();
/**
* Functions to gather random data via the OpenSSL PRNG
*/
bool GetRandBytes(unsigned char *buf, int num);
uint64_t GetRand(uint64_t nMax);
int GetRandInt(int nMax);
uint256 GetRandHash();
/**
* Seed insecure_rand using the random pool.
* @param Deterministic Use a determinstic seed
*/
void seed_insecure_rand(bool fDeterministic = false);
/**
* MWC RNG of George Marsaglia
* This is intended to be fast. It has a period of 2^59.3, though the
* least significant 16 bits only have a period of about 2^30.1.
*
* @return random value
*/
extern uint32_t insecure_rand_Rz;
extern uint32_t insecure_rand_Rw;
static inline uint32_t insecure_rand(void)
{
insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
return (insecure_rand_Rw << 16) + insecure_rand_Rz;
}
#endif // BITCOIN_RANDOM_H

8
src/script.cpp

@ -5,13 +5,14 @@ @@ -5,13 +5,14 @@
#include "script.h"
#include "crypto/ripemd160.h"
#include "crypto/sha1.h"
#include "crypto/sha2.h"
#include "core.h"
#include "hash.h"
#include "key.h"
#include "keystore.h"
#include "crypto/sha1.h"
#include "crypto/sha2.h"
#include "crypto/ripemd160.h"
#include "random.h"
#include "sync.h"
#include "uint256.h"
#include "util.h"
@ -1097,7 +1098,6 @@ uint256 SignatureHash(const CScript &scriptCode, const CTransaction& txTo, unsig @@ -1097,7 +1098,6 @@ uint256 SignatureHash(const CScript &scriptCode, const CTransaction& txTo, unsig
// Valid signature cache, to avoid doing expensive ECDSA signature checking
// twice for every transaction (once when accepted into memory pool, and
// again when accepted into the block chain)
class CSignatureCache
{
private:

8
src/test/canonical_tests.cpp

@ -6,12 +6,11 @@ @@ -6,12 +6,11 @@
// Unit tests for canonical signatures
//
#include "script.h"
#include "util.h"
#include "data/sig_noncanonical.json.h"
#include "data/sig_canonical.json.h"
#include "random.h"
#include "script.h"
#include "util.h"
#include <boost/foreach.hpp>
#include <boost/test/unit_test.hpp>
@ -21,7 +20,6 @@ @@ -21,7 +20,6 @@
using namespace std;
using namespace json_spirit;
// In script_tests.cpp
extern Array read_json(const std::string& jsondata);

1
src/test/crypto_tests.cpp

@ -5,6 +5,7 @@ @@ -5,6 +5,7 @@
#include "crypto/ripemd160.h"
#include "crypto/sha1.h"
#include "crypto/sha2.h"
#include "random.h"
#include "util.h"
#include <vector>

1
src/test/mruset_tests.cpp

@ -4,6 +4,7 @@ @@ -4,6 +4,7 @@
#include "mruset.h"
#include "random.h"
#include "util.h"
#include <set>

16
src/test/sighash_tests.cpp

@ -2,15 +2,16 @@ @@ -2,15 +2,16 @@
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <boost/test/unit_test.hpp>
#include <iostream>
#include "data/sighash.json.h"
#include "main.h"
#include "util.h"
#include "random.h"
#include "serialize.h"
#include "util.h"
#include "version.h"
#include "data/sighash.json.h"
#include <iostream>
#include <boost/test/unit_test.hpp>
#include "json/json_spirit_reader_template.h"
#include "json/json_spirit_utils.h"
#include "json/json_spirit_writer_template.h"
@ -118,7 +119,7 @@ BOOST_AUTO_TEST_SUITE(sighash_tests) @@ -118,7 +119,7 @@ BOOST_AUTO_TEST_SUITE(sighash_tests)
BOOST_AUTO_TEST_CASE(sighash_test)
{
seed_insecure_rand(false);
#if defined(PRINT_SIGHASH_JSON)
std::cout << "[\n";
std::cout << "\t[\"raw_transaction, script, input_index, hashType, signature_hash (result)\"],\n";
@ -205,10 +206,9 @@ BOOST_AUTO_TEST_CASE(sighash_from_data) @@ -205,10 +206,9 @@ BOOST_AUTO_TEST_CASE(sighash_from_data)
BOOST_ERROR("Bad test, couldn't deserialize data: " << strTest);
continue;
}
sh = SignatureHash(scriptCode, tx, nIn, nHashType);
BOOST_CHECK_MESSAGE(sh.GetHex() == sigHashHex, strTest);
}
}
BOOST_AUTO_TEST_SUITE_END()

7
src/test/skiplist_tests.cpp

@ -2,11 +2,13 @@ @@ -2,11 +2,13 @@
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <boost/test/unit_test.hpp>
#include <vector>
#include "main.h"
#include "random.h"
#include "util.h"
#include <vector>
#include <boost/test/unit_test.hpp>
#define SKIPLIST_LENGTH 300000
@ -98,4 +100,3 @@ BOOST_AUTO_TEST_CASE(getlocator_test) @@ -98,4 +100,3 @@ BOOST_AUTO_TEST_CASE(getlocator_test)
}
BOOST_AUTO_TEST_SUITE_END()

4
src/test/test_bitcoin.cpp

@ -4,9 +4,8 @@ @@ -4,9 +4,8 @@
#define BOOST_TEST_MODULE Bitcoin Test Suite
#include "main.h"
#include "random.h"
#include "txdb.h"
#include "ui_interface.h"
#include "util.h"
@ -89,4 +88,3 @@ bool ShutdownRequested() @@ -89,4 +88,3 @@ bool ShutdownRequested()
{
return false;
}

1
src/test/util_tests.cpp

@ -4,6 +4,7 @@ @@ -4,6 +4,7 @@
#include "util.h"
#include "random.h"
#include "sync.h"
#include <stdint.h>

109
src/util.cpp

@ -6,6 +6,7 @@ @@ -6,6 +6,7 @@
#include "util.h"
#include "chainparamsbase.h"
#include "random.h"
#include "sync.h"
#include "uint256.h"
#include "version.h"
@ -69,7 +70,6 @@ @@ -69,7 +70,6 @@
#include <boost/program_options/detail/config_file.hpp>
#include <boost/program_options/parsers.hpp>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/rand.h>
// Work around clang compilation problem in Boost 1.46:
@ -142,92 +142,6 @@ public: @@ -142,92 +142,6 @@ public:
}
instance_of_cinit;
bool GetRandBytes(unsigned char *buf, int num)
{
if (RAND_bytes(buf, num) == 0) {
LogPrint("rand", "%s : OpenSSL RAND_bytes() failed with error: %s\n", __func__, ERR_error_string(ERR_get_error(), NULL));
return false;
}
return true;
}
void RandAddSeed()
{
// Seed with CPU performance counter
int64_t nCounter = GetPerformanceCounter();
RAND_add(&nCounter, sizeof(nCounter), 1.5);
memset(&nCounter, 0, sizeof(nCounter));
}
void RandAddSeedPerfmon()
{
RandAddSeed();
// This can take up to 2 seconds, so only do it every 10 minutes
static int64_t nLastPerfmon;
if (GetTime() < nLastPerfmon + 10 * 60)
return;
nLastPerfmon = GetTime();
#ifdef WIN32
// Don't need this on Linux, OpenSSL automatically uses /dev/urandom
// Seed with the entire set of perfmon data
std::vector <unsigned char> vData(250000,0);
long ret = 0;
unsigned long nSize = 0;
const size_t nMaxSize = 10000000; // Bail out at more than 10MB of performance data
while (true)
{
nSize = vData.size();
ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, begin_ptr(vData), &nSize);
if (ret != ERROR_MORE_DATA || vData.size() >= nMaxSize)
break;
vData.resize(std::max((vData.size()*3)/2, nMaxSize)); // Grow size of buffer exponentially
}
RegCloseKey(HKEY_PERFORMANCE_DATA);
if (ret == ERROR_SUCCESS)
{
RAND_add(begin_ptr(vData), nSize, nSize/100.0);
OPENSSL_cleanse(begin_ptr(vData), nSize);
LogPrint("rand", "%s: %lu bytes\n", __func__, nSize);
} else {
static bool warned = false; // Warn only once
if (!warned)
{
LogPrintf("%s: Warning: RegQueryValueExA(HKEY_PERFORMANCE_DATA) failed with code %i\n", __func__, ret);
warned = true;
}
}
#endif
}
uint64_t GetRand(uint64_t nMax)
{
if (nMax == 0)
return 0;
// The range of the random source must be a multiple of the modulus
// to give every possible output value an equal possibility
uint64_t nRange = (std::numeric_limits<uint64_t>::max() / nMax) * nMax;
uint64_t nRand = 0;
do {
GetRandBytes((unsigned char*)&nRand, sizeof(nRand));
} while (nRand >= nRange);
return (nRand % nMax);
}
int GetRandInt(int nMax)
{
return GetRand(nMax);
}
uint256 GetRandHash()
{
uint256 hash;
GetRandBytes((unsigned char*)&hash, sizeof(hash));
return hash;
}
// LogPrintf() has been broken a couple of times now
// by well-meaning people adding mutexes in the most straightforward way.
// It breaks because it may be called by global destructors during shutdown.
@ -1195,27 +1109,6 @@ void SetMockTime(int64_t nMockTimeIn) @@ -1195,27 +1109,6 @@ void SetMockTime(int64_t nMockTimeIn)
nMockTime = nMockTimeIn;
}
uint32_t insecure_rand_Rz = 11;
uint32_t insecure_rand_Rw = 11;
void seed_insecure_rand(bool fDeterministic)
{
// The seed values have some unlikely fixed points which we avoid.
if(fDeterministic)
{
insecure_rand_Rz = insecure_rand_Rw = 11;
} else {
uint32_t tmp;
do {
GetRandBytes((unsigned char*)&tmp, 4);
} while(tmp == 0 || tmp == 0x9068ffffU);
insecure_rand_Rz = tmp;
do {
GetRandBytes((unsigned char*)&tmp, 4);
} while(tmp == 0 || tmp == 0x464fffffU);
insecure_rand_Rw = tmp;
}
}
string FormatVersion(int nVersion)
{
if (nVersion%100 == 0)

51
src/util.h

@ -90,8 +90,6 @@ inline void MilliSleep(int64_t n) @@ -90,8 +90,6 @@ inline void MilliSleep(int64_t n)
#endif
}
extern std::map<std::string, std::string> mapArgs;
extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
extern bool fDebug;
@ -103,9 +101,6 @@ extern bool fLogTimestamps; @@ -103,9 +101,6 @@ extern bool fLogTimestamps;
extern bool fLogIPs;
extern volatile bool fReopenDebugLog;
bool GetRandBytes(unsigned char *buf, int num);
void RandAddSeed();
void RandAddSeedPerfmon();
void SetupEnvironment();
/* Return true if log accepts specified category */
@ -188,23 +183,12 @@ boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true); @@ -188,23 +183,12 @@ boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
#endif
boost::filesystem::path GetTempPath();
void ShrinkDebugFile();
int GetRandInt(int nMax);
uint64_t GetRand(uint64_t nMax);
uint256 GetRandHash();
int64_t GetTime();
void SetMockTime(int64_t nMockTimeIn);
std::string FormatFullVersion();
std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
void runCommand(std::string strCommand);
inline std::string i64tostr(int64_t n)
{
return strprintf("%d", n);
@ -290,19 +274,6 @@ inline std::string HexStr(const T& vch, bool fSpaces=false) @@ -290,19 +274,6 @@ inline std::string HexStr(const T& vch, bool fSpaces=false)
*/
std::string FormatParagraph(const std::string in, size_t width=79, size_t indent=0);
inline int64_t GetPerformanceCounter()
{
int64_t nCounter = 0;
#ifdef WIN32
QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
#else
timeval t;
gettimeofday(&t, NULL);
nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
#endif
return nCounter;
}
inline int64_t GetTimeMillis()
{
return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
@ -371,28 +342,6 @@ bool SoftSetArg(const std::string& strArg, const std::string& strValue); @@ -371,28 +342,6 @@ bool SoftSetArg(const std::string& strArg, const std::string& strValue);
*/
bool SoftSetBoolArg(const std::string& strArg, bool fValue);
/**
* MWC RNG of George Marsaglia
* This is intended to be fast. It has a period of 2^59.3, though the
* least significant 16 bits only have a period of about 2^30.1.
*
* @return random value
*/
extern uint32_t insecure_rand_Rz;
extern uint32_t insecure_rand_Rw;
static inline uint32_t insecure_rand(void)
{
insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
return (insecure_rand_Rw << 16) + insecure_rand_Rz;
}
/**
* Seed insecure_rand using the random pool.
* @param Deterministic Use a determinstic seed
*/
void seed_insecure_rand(bool fDeterministic=false);
/**
* Timing-attack-resistant comparison.
* Takes time proportional to length

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