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Merge pull request #9985

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3c05f00 crypto: check+throw for Cryptonight v1 invalid input (jeffro256)
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tobtoht 2025-07-13 16:50:58 +00:00
commit a9a399dc6b
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1 changed files with 11 additions and 1 deletions
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12
src/crypto/hash.h
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@ -30,8 +30,9 @@
#pragma once
#include <stddef.h>
#include <iostream>
#include <stddef.h>
#include <stdexcept>
#include "common/pod-class.h"
#include "generic-ops.h"
@ -70,11 +71,20 @@ namespace crypto {
return h;
}
static constexpr void cn_variant1_check(const std::size_t length, const int variant)
{
// see VARIANT1_CHECK in slow-hash.c
if (variant == 1 && length < 43)
throw std::logic_error("Cryptonight variant 1 is undefined for inputs of less than 43 bytes");
}
inline void cn_slow_hash(const void *data, std::size_t length, hash &hash, int variant = 0, uint64_t height = 0) {
cn_variant1_check(length, variant);
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 0/*prehashed*/, height);
}
inline void cn_slow_hash_prehashed(const void *data, std::size_t length, hash &hash, int variant = 0, uint64_t height = 0) {
cn_variant1_check(length, variant);
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 1/*prehashed*/, height);
}