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refactor: use Span for SipHash::Write

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Co-authored-by: MarcoFalke <*~=`'#}+{/-|&$^_@721217.xyz>
This commit is contained in:
Sebastian Falbesoner
2023-07-17 03:33:13 +02:00
parent 57b8336dfe
commit 7d92b1430a
12 changed files with 25 additions and 23 deletions
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7
src/crypto/siphash.cpp
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@@ -45,14 +45,14 @@ CSipHasher& CSipHasher::Write(uint64_t data)
return *this;
}
CSipHasher& CSipHasher::Write(const unsigned char* data, size_t size)
CSipHasher& CSipHasher::Write(Span<const unsigned char> data)
{
uint64_t v0 = v[0], v1 = v[1], v2 = v[2], v3 = v[3];
uint64_t t = tmp;
uint8_t c = count;
while (size--) {
t |= ((uint64_t)(*(data++))) << (8 * (c % 8));
while (data.size() > 0) {
t |= uint64_t{data.front()} << (8 * (c % 8));
c++;
if ((c & 7) == 0) {
v3 ^= t;
@@ -61,6 +61,7 @@ CSipHasher& CSipHasher::Write(const unsigned char* data, size_t size)
v0 ^= t;
t = 0;
}
data = data.subspan(1);
}
v[0] = v0;

3
src/crypto/siphash.h
View File

@@ -7,6 +7,7 @@
#include <stdint.h>
#include <span.h>
#include <uint256.h>
/** SipHash-2-4 */
@@ -26,7 +27,7 @@ public:
*/
CSipHasher& Write(uint64_t data);
/** Hash arbitrary bytes. */
CSipHasher& Write(const unsigned char* data, size_t size);
CSipHasher& Write(Span<const unsigned char> data);
/** Compute the 64-bit SipHash-2-4 of the data written so far. The object remains untouched. */
uint64_t Finalize() const;
};