aboutsummaryrefslogtreecommitdiff
path: root/src/random.cpp
AgeCommit message (Collapse)Author
2019-06-17net: Use mockable time for tx downloadMarcoFalke
2019-05-18Merge #15224: Add RNG strengthening (10ms once every minute)Wladimir J. van der Laan
3cb9ce85d0c6d01217babf0df7efc2eabde1b12f Document strenghtening (Pieter Wuille) 1d207bc46f995ad3b5ae89bb504affaca09d10b1 Add hash strengthening to the RNG (Pieter Wuille) Pull request description: This patch improves the built-in RNG using hash strengthening. At startup, and once every minute, 32 bytes of entropy are produced from the RNG, repeatedly hashed using SHA512 for 10ms, and then fed back into the RNG, together with high-precision timestamps obtained every 1000 iterations. ACKs for commit 3cb9ce: pstratem: utACK 3cb9ce85d0c6d01217babf0df7efc2eabde1b12f Tree-SHA512: 4fb6f61639b392697beb81c5f0903f79f10dd1087bed7f34de2abb5c22704a671e37b2d828ed141492491863efb1e7d1fa04408a1d32c9de2f2cc8ac406bbe57
2019-05-06Add hash strengthening to the RNGPieter Wuille
Once every minute, this will feed the RNG state through repeated SHA512 for 10ms. The timings of that operation are used as entropy source as well.
2019-05-03Add ChaCha20 encryption option (XOR)Jonas Schnelli
2019-02-18Merge #15250: Use RdSeed when available, and reduce RdRand loadWladimir J. van der Laan
1435fabc19d2143187efb493cbe23225eaf851ae Use RdSeed when available, and reduce RdRand load (Pieter Wuille) Pull request description: This introduces support for autodetecting and using the RdSeed instruction on x86/x86_64 systems. In addition: * In SeedFast, only 64 bits of entropy are generated through RdRand (256 was relatively slow). * In SeedStartup, 256 bits of entropy are generated, using RdSeed (preferably) or RdRand (otherwise). Tree-SHA512: fb7d3e22e93e14592f4b07282aa79d7c3cc4e9debdd9978580b8d2562bbad345e289bf3f80de2c50c9b50b8bac2aa9b838f9f272f7f8d43f1efc0913aa8acce3
2019-02-03Use RdSeed when available, and reduce RdRand loadPieter Wuille
This introduces support for autodetecting and using the RdSeed instruction. In addition: * In SeedFast, only 64 bits of entropy are generated through RdRand (256 was relatively slow). * In SeedStartup, 256 bits of entropy are generated, using RdSeed (preferably) or RdRand (otherwise).
2019-02-02test: Make bloom tests deterministicMarcoFalke
2019-01-16Document RNG design in random.hPieter Wuille
2019-01-16Use secure allocator for RNG statePieter Wuille
2019-01-16Encapsulate RNGState betterPieter Wuille
2019-01-16DRY: Implement GetRand using FastRandomContext::randrangePieter Wuille
2019-01-16Sprinkle some sweet noexcepts over the RNG codePieter Wuille
2019-01-16Remove hwrand_initialized.Pieter Wuille
All access to hwrand is now gated by GetRNGState, which initializes the hwrand code.
2019-01-16Switch all RNG code to the built-in PRNG.Pieter Wuille
It includes the following policy changes: * All GetRand* functions seed the stack pointer and rdrand result (in addition to the performance counter) * The periodic entropy added by the idle scheduler now seeds stack pointer, rdrand and perfmon data (once every 10 minutes) in addition to just a sleep timing. * The entropy added when calling GetStrongRandBytes no longer includes the once-per-10-minutes perfmon data on windows (it is moved to the idle scheduler instead, where latency matters less). Other changes: * OpenSSL is no longer seeded directly anywhere. Instead, any generated randomness through our own RNG is fed back to OpenSSL (after an additional hashing step to prevent leaking our RNG state). * Seeding that was previously done directly in RandAddSeedSleep is now moved to SeedSleep(), which is indirectly invoked through ProcRand from RandAddSeedSleep. * Seeding that was previously done directly in GetStrongRandBytes() is now moved to SeedSlow(), which is indirectly invoked through ProcRand from GetStrongRandBytes().
2019-01-16Integrate util/system's CInit into RNGStatePieter Wuille
This guarantees that OpenSSL is initialized properly whenever randomness is used, even when that randomness is invoked from global constructors. Note that this patch uses Mutex directly, rather than CCriticalSection. This is because the lock-detection code is not necessarily initialized during global constructors.
2019-01-16Abstract out seeding/extracting entropy into RNGState::MixExtractPieter Wuille
2019-01-16Add thread safety annotations to RNG statePieter Wuille
2019-01-16Rename some hardware RNG related functionsPieter Wuille
2019-01-16Automatically initialize RNG on first use.Pieter Wuille
2019-01-16Don't log RandAddSeedPerfmon detailsPieter Wuille
These are hard to deal with, as in a follow-up this function can get called before the logging infrastructure is initialized.
2018-12-12Do not permit copying FastRandomContextsPieter Wuille
2018-12-12Bugfix: randbytes should seed when needed (non reachable issue)Pieter Wuille
2018-11-04scripted-diff: Move util files to separate directory.Jim Posen
-BEGIN VERIFY SCRIPT- mkdir -p src/util git mv src/util.h src/util/system.h git mv src/util.cpp src/util/system.cpp git mv src/utilmemory.h src/util/memory.h git mv src/utilmoneystr.h src/util/moneystr.h git mv src/utilmoneystr.cpp src/util/moneystr.cpp git mv src/utilstrencodings.h src/util/strencodings.h git mv src/utilstrencodings.cpp src/util/strencodings.cpp git mv src/utiltime.h src/util/time.h git mv src/utiltime.cpp src/util/time.cpp sed -i 's/<util\.h>/<util\/system\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp') sed -i 's/<utilmemory\.h>/<util\/memory\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp') sed -i 's/<utilmoneystr\.h>/<util\/moneystr\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp') sed -i 's/<utilstrencodings\.h>/<util\/strencodings\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp') sed -i 's/<utiltime\.h>/<util\/time\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp') sed -i 's/BITCOIN_UTIL_H/BITCOIN_UTIL_SYSTEM_H/g' src/util/system.h sed -i 's/BITCOIN_UTILMEMORY_H/BITCOIN_UTIL_MEMORY_H/g' src/util/memory.h sed -i 's/BITCOIN_UTILMONEYSTR_H/BITCOIN_UTIL_MONEYSTR_H/g' src/util/moneystr.h sed -i 's/BITCOIN_UTILSTRENCODINGS_H/BITCOIN_UTIL_STRENCODINGS_H/g' src/util/strencodings.h sed -i 's/BITCOIN_UTILTIME_H/BITCOIN_UTIL_TIME_H/g' src/util/time.h sed -i 's/ util\.\(h\|cpp\)/ util\/system\.\1/g' src/Makefile.am sed -i 's/utilmemory\.\(h\|cpp\)/util\/memory\.\1/g' src/Makefile.am sed -i 's/utilmoneystr\.\(h\|cpp\)/util\/moneystr\.\1/g' src/Makefile.am sed -i 's/utilstrencodings\.\(h\|cpp\)/util\/strencodings\.\1/g' src/Makefile.am sed -i 's/utiltime\.\(h\|cpp\)/util\/time\.\1/g' src/Makefile.am sed -i 's/-> util ->/-> util\/system ->/' test/lint/lint-circular-dependencies.sh sed -i 's/src\/util\.cpp/src\/util\/system\.cpp/g' test/lint/lint-format-strings.py test/lint/lint-locale-dependence.sh sed -i 's/src\/utilmoneystr\.cpp/src\/util\/moneystr\.cpp/g' test/lint/lint-locale-dependence.sh sed -i 's/src\/utilstrencodings\.\(h\|cpp\)/src\/util\/strencodings\.\1/g' test/lint/lint-locale-dependence.sh sed -i 's/src\\utilstrencodings\.cpp/src\\util\\strencodings\.cpp/' build_msvc/libbitcoinconsensus/libbitcoinconsensus.vcxproj -END VERIFY SCRIPT-
2018-08-31scripted-diff: Small locking renameRussell Yanofsky
Call sync.h primitives "locks" and "mutexes" instead of "blocks" and "waitable critical sections" to match current coding conventions and c++11 standard names. This PR does not rename the "CCriticalSection" class (though this could be done as a followup) because it is used everywhere and would swamp the other changes in this PR. Plain mutexes should mostly be preferred instead of recursive mutexes in new code anyway. -BEGIN VERIFY SCRIPT- set -x set -e ren() { git grep -l $1 | xargs sed -i s/$1/$2/; } ren CCriticalBlock UniqueLock ren CWaitableCriticalSection Mutex ren CConditionVariable std::condition_variable ren cs_GenesisWait g_genesis_wait_mutex ren condvar_GenesisWait g_genesis_wait_cv perl -0777 -pi -e 's/.*typedef.*condition_variable.*\n\n?//g' src/sync.h -END VERIFY SCRIPT-
2018-08-31Merge #11640: Make LOCK, LOCK2, TRY_LOCK work with CWaitableCriticalSectionWladimir J. van der Laan
9c4dc597ddc66acfd58a945a5ab11f833731abba Use LOCK macros for non-recursive locks (Russell Yanofsky) 1382913e61f5db6ba849b1e261e8aefcd5a1ae68 Make LOCK, LOCK2, TRY_LOCK work with CWaitableCriticalSection (Russell Yanofsky) ba1f095aadf29bddb0bd8176d2e0b908f92a5623 MOVEONLY Move AnnotatedMixin declaration (Russell Yanofsky) 41b88e93375d57db12da923f45f87b9a2db8e730 Add unit test for DEBUG_LOCKORDER code (Russell Yanofsky) Pull request description: Make LOCK macros work with non-recursive mutexes, and use wherever possible for better deadlock detection. Also add unit test for DEBUG_LOCKORDER code. Tree-SHA512: 64ef209307f28ecd0813a283f15c6406138c6ffe7f6cbbd084161044db60e2c099a7d0d2edcd1c5e7770a115e9b931b486e86c9a777bdc96d2e8a9f4dc192942
2018-08-03Use LOCK macros for non-recursive locksRussell Yanofsky
Instead of std::unique_lock.
2018-07-27Update copyright headers to 2018DrahtBot
2018-05-24Fix FreeBSD build by including utilstrencodings.hWladimir J. van der Laan
`random.cpp` needs to explicitly include `utilstrencodings.h` to get `ARRAYLEN`. This fixes the FreeBSD build. This was broken in 84f41946b9026e8bf7bc44ed848dfb945394b693.
2018-05-17break circular dependency: random/sync -> util -> random/syncChun Kuan Lee
2018-05-03Make it clear which functions that are intended to be translation unit localpracticalswift
Do not share functions that are meant to be translation unit local with other translation units. Use internal linkage for those consistently.
2018-04-09Remove duplicate includespracticalswift
2018-01-03Increment MIT Licence copyright header year on files modified in 2017Akira Takizawa
2017-11-16scripted-diff: Replace #include "" with #include <> (ryanofsky)MeshCollider
-BEGIN VERIFY SCRIPT- for f in \ src/*.cpp \ src/*.h \ src/bench/*.cpp \ src/bench/*.h \ src/compat/*.cpp \ src/compat/*.h \ src/consensus/*.cpp \ src/consensus/*.h \ src/crypto/*.cpp \ src/crypto/*.h \ src/crypto/ctaes/*.h \ src/policy/*.cpp \ src/policy/*.h \ src/primitives/*.cpp \ src/primitives/*.h \ src/qt/*.cpp \ src/qt/*.h \ src/qt/test/*.cpp \ src/qt/test/*.h \ src/rpc/*.cpp \ src/rpc/*.h \ src/script/*.cpp \ src/script/*.h \ src/support/*.cpp \ src/support/*.h \ src/support/allocators/*.h \ src/test/*.cpp \ src/test/*.h \ src/wallet/*.cpp \ src/wallet/*.h \ src/wallet/test/*.cpp \ src/wallet/test/*.h \ src/zmq/*.cpp \ src/zmq/*.h do base=${f%/*}/ relbase=${base#src/} sed -i "s:#include \"\(.*\)\"\(.*\):if test -e \$base'\\1'; then echo \"#include <\"\$relbase\"\\1>\\2\"; else echo \"#include <\\1>\\2\"; fi:e" $f done -END VERIFY SCRIPT-
2017-08-22Merge #10843: Add attribute [[noreturn]] (C++11) to functions that will not ↵Wladimir J. van der Laan
return b82c55a Add attribute [[noreturn]] (C++11) to functions that will not return (practicalswift) Pull request description: Add attribute `[[noreturn]]` (C++11) to functions that will not return. Rationale: * Reduce the number of false positives/false negatives from static analyzers with regards to things such as unused or unreachable code * Potentially enable additional compiler optimizations Tree-SHA512: 899683fe8b2fcf19bd334352271d368b46b805be9d426aac1808335fd95732d6d7078d3296951b9879196f3f6e3ec0fdb7695d0afdc3fbe4dd78a2ca70e91ff7
2017-08-18Document the preference of nullptr over NULL or (void*)0practicalswift
2017-08-14Merge #10483: scripted-diff: Use the C++11 keyword nullptr to denote the ↵Wladimir J. van der Laan
pointer literal instead of the macro NULL 90d4d89 scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal instead of the macro NULL (practicalswift) Pull request description: Since C++11 the macro `NULL` may be: * an integer literal with value zero, or * a prvalue of type `std::nullptr_t` By using the C++11 keyword `nullptr` we are guaranteed a prvalue of type `std::nullptr_t`. For a more thorough discussion, see "A name for the null pointer: nullptr" (Sutter & Stroustrup), http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf With this patch applied there are no `NULL` macro usages left in the repo: ``` $ git grep NULL -- "*.cpp" "*.h" | egrep -v '(/univalue/|/secp256k1/|/leveldb/|_NULL|NULLDUMMY|torcontrol.*NULL|NULL cert)' | wc -l 0 ``` The road towards `nullptr` (C++11) is split into two PRs: * `NULL` → `nullptr` is handled in PR #10483 (scripted, this PR) * `0` → `nullptr` is handled in PR #10645 (manual) Tree-SHA512: 3c395d66f2ad724a8e6fed74b93634de8bfc0c0eafac94e64e5194c939499fefd6e68f047de3083ad0b4eff37df9a8a3a76349aa17d55eabbd8e0412f140a297
2017-08-07scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal ↵practicalswift
instead of the macro NULL -BEGIN VERIFY SCRIPT- sed -i 's/\<NULL\>/nullptr/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h src/qt/*/*.cpp src/qt/*/*.h src/wallet/*/*.cpp src/wallet/*/*.h src/support/allocators/*.h sed -i 's/Prefer nullptr, otherwise SAFECOOKIE./Prefer NULL, otherwise SAFECOOKIE./g' src/torcontrol.cpp sed -i 's/tor: Using nullptr authentication/tor: Using NULL authentication/g' src/torcontrol.cpp sed -i 's/METHODS=nullptr/METHODS=NULL/g' src/test/torcontrol_tests.cpp src/torcontrol.cpp sed -i 's/nullptr certificates/NULL certificates/g' src/qt/paymentserver.cpp sed -i 's/"nullptr"/"NULL"/g' src/torcontrol.cpp src/test/torcontrol_tests.cpp -END VERIFY SCRIPT-
2017-07-27Check if sys/random.h is required for getentropy on OSX.James Hilliard
2017-07-17random: only use getentropy on openbsdCory Fields
2017-07-17Add attribute [[noreturn]] (C++11) to functions that will not returnpracticalswift
Rationale: * Reduce the number of false positives from static analyzers * Potentially enable additional compiler optimizations
2017-07-17Merge #10837: Fix resource leak on error in GetDevURandomWladimir J. van der Laan
a8ae0b2 Fix resource leak (Dag Robole) Pull request description: Fixes a potential file handle leak when size of entropy is invalid Tree-SHA512: 692d24daaf370bba1f842925b037275126f9494f54769650bcf5829c794a0fb8561a86f42347bdf088a484e4f107bce7fa14cd7bdbfb4ecfbeb51968953da3ae
2017-07-15Fix resource leakDag Robole
2017-07-14Clarify entropy sourcePieter Wuille
2017-07-13Use cpuid intrinsics instead of asm codePieter Wuille
2017-06-16random: fix crash on some 64bit platformsCory Fields
rbx needs to be stashed in a 64bit register on 64bit platforms. With this crash in particular, it was holding a stack canary which was not properly restored after the cpuid. Split out the x86+PIC case so that x86_64 doesn't have to worry about it.
2017-06-14Merge #10377: Use rdrand as entropy source on supported platformsWladimir J. van der Laan
cb24c85 Use rdrand as entropy source on supported platforms (Pieter Wuille) Tree-SHA512: c42eaa01a14e6bc097c70b6bf8540d61854c2f76cb32be69c2a3c411a126f7b4bf4a4486e4493c4cc367cc689319abde0d4adb799d29a54fd3e81767ce0766fc
2017-06-13Use rdrand as entropy source on supported platformsPieter Wuille
2017-06-05Add FastRandomContext::rand256() and ::randbytes()Pieter Wuille
FastRandomContext now provides all functionality that the real Rand* functions provide.
2017-05-22Add perf counter data to GetStrongRandBytes state in schedulerMatt Corallo
2017-05-22Add internal method to add new random data to our internal RNG stateMatt Corallo
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-19 20:30:17 +0000