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random: convert XoRoShiRo128PlusPlus into full RNG

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Convert XoRoShiRo128PlusPlus into a full RandomMixin-based RNG class,
providing all utility functionality that FastRandomContext has. In doing so,
it is renamed to InsecureRandomContext, highlighting its non-cryptographic
nature.

To do this, a fillrand fallback is added to RandomMixin (where it is used by
InsecureRandomContext), but FastRandomContext still uses its own fillrand.
This commit is contained in:
Pieter Wuille
2024-03-10 15:16:20 -04:00
parent 8cc2f45065
commit 6cfdc5b104
9 changed files with 68 additions and 102 deletions
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6
test/sanitizer_suppressions/ubsan
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@@ -57,8 +57,8 @@ unsigned-integer-overflow:CBlockPolicyEstimator::processBlockTx
unsigned-integer-overflow:TxConfirmStats::EstimateMedianVal
unsigned-integer-overflow:prevector.h
unsigned-integer-overflow:EvalScript
unsigned-integer-overflow:XoRoShiRo128PlusPlus::operator()
unsigned-integer-overflow:XoRoShiRo128PlusPlus::SplitMix64
unsigned-integer-overflow:InsecureRandomContext::rand64
unsigned-integer-overflow:InsecureRandomContext::SplitMix64
unsigned-integer-overflow:bitset_detail::PopCount
implicit-integer-sign-change:CBlockPolicyEstimator::processBlockTx
implicit-integer-sign-change:SetStdinEcho
@@ -76,6 +76,6 @@ shift-base:arith_uint256.cpp
shift-base:crypto/
shift-base:streams.h
shift-base:FormatHDKeypath
shift-base:XoRoShiRo128PlusPlus::operator()
shift-base:InsecureRandomContext::rand64
shift-base:RandomMixin<*>::randbits
shift-base:RandomMixin<*>::randbits<*>