Bitcoin ABC
0.26.3
P2P Digital Currency
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src
avalanche
compactproofs.cpp
Go to the documentation of this file.
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// Copyright (c) 2022 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <
avalanche/compactproofs.h
>
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#include <
avalanche/proofid.h
>
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#include <
crypto/siphash.h
>
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namespace
avalanche
{
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CompactProofs::CompactProofs
(
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const
RadixTree<const Proof, ProofRadixTreeAdapter>
&
proofs
)
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:
CompactProofs
() {
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proofs
.forEachLeaf([&](
auto
pLeaf
) {
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shortproofids
.push_back(
getShortID
(
pLeaf
->getId()));
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return
true
;
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});
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}
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uint64_t
CompactProofs::getShortID
(
const
ProofId
&proofid)
const
{
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static_assert
(
SHORTPROOFIDS_LENGTH
== 6,
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"shortproofids calculation assumes 6-byte shortproofids"
);
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return
SipHashUint256
(
shortproofidk0
,
shortproofidk1
, proofid) &
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0xffffffffffffL;
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}
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}
// namespace avalanche
avalanche::CompactProofs
Definition
compactproofs.h:54
avalanche::CompactProofs::CompactProofs
CompactProofs()
Definition
compactproofs.h:63
avalanche::CompactProofs::getShortID
uint64_t getShortID(const ProofId &proofid) const
Definition
compactproofs.cpp:21
avalanche::CompactProofs::shortproofids
std::vector< uint64_t > shortproofids
Definition
compactproofs.h:57
avalanche::CompactProofs::shortproofidk1
uint64_t shortproofidk1
Definition
compactproofs.h:56
avalanche::CompactProofs::shortproofidk0
uint64_t shortproofidk0
Definition
compactproofs.h:56
avalanche::CompactProofs::SHORTPROOFIDS_LENGTH
static constexpr int SHORTPROOFIDS_LENGTH
Definition
compactproofs.h:61
compactproofs.h
avalanche
Definition
avalanche.h:13
proofid.h
GetRand
T GetRand(T nMax=std::numeric_limits< T >::max()) noexcept
Generate a uniform random integer of type T in the range [0..nMax) nMax defaults to std::numeric_limi...
Definition
random.h:85
SipHashUint256
uint64_t SipHashUint256(uint64_t k0, uint64_t k1, const uint256 &val)
Optimized SipHash-2-4 implementation for uint256.
Definition
siphash.cpp:99
siphash.h
RadixTree
This is a radix tree storing values identified by a unique key.
Definition
radix.h:40
avalanche::ProofId
Definition
proofid.h:17
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