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Refactored keccak interface

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- Allow calculating keccak hash in steps
- Only allow 32 and 200 byte final hashes
This commit is contained in:
SChernykh
2023-01-08 12:56:26 +01:00
parent 4f34c4466a
commit 632f3faac5
9 changed files with 58 additions and 31 deletions
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35
src/keccak.cpp
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@@ -115,14 +115,10 @@ NOINLINE void keccakf(uint64_t* st)
}
}
NOINLINE void keccak(const uint8_t* in, int inlen, uint8_t* md, int mdlen)
NOINLINE void keccak_step(const uint8_t* &in, int &inlen, uint64_t (&st)[25])
{
uint64_t st[25];
const int rsiz = sizeof(st) == mdlen ? KeccakParams::HASH_DATA_AREA : 200 - 2 * mdlen;
const int rsizw = rsiz / 8;
memset(st, 0, sizeof(st));
constexpr int rsiz = KeccakParams::HASH_DATA_AREA;
constexpr int rsizw = rsiz / 8;
for (; inlen >= rsiz; inlen -= rsiz, in += rsiz) {
for (int i = 0; i < rsizw; i++) {
@@ -130,6 +126,14 @@ NOINLINE void keccak(const uint8_t* in, int inlen, uint8_t* md, int mdlen)
}
keccakf(st);
}
}
NOINLINE void keccak_finish(const uint8_t* in, int inlen, uint64_t (&st)[25])
{
constexpr int rsiz = KeccakParams::HASH_DATA_AREA;
constexpr int rsizw = rsiz / 8;
keccak_step(in, inlen, st);
// last block and padding
alignas(8) uint8_t temp[144];
@@ -144,13 +148,22 @@ NOINLINE void keccak(const uint8_t* in, int inlen, uint8_t* md, int mdlen)
}
keccakf(st);
memcpy(md, st, mdlen);
}
void keccak(const uint8_t *in, int inlen, uint8_t (&md)[200])
NOINLINE void keccak(const uint8_t* in, int inlen, uint8_t (&md)[32])
{
keccak(in, inlen, md, 200);
uint64_t st[25] = {};
keccak_step(in, inlen, st);
keccak_finish(in, inlen, st);
memcpy(md, st, 32);
}
NOINLINE void keccak(const uint8_t* in, int inlen, uint8_t(&md)[200])
{
uint64_t st[25] = {};
keccak_step(in, inlen, st);
keccak_finish(in, inlen, st);
memcpy(md, st, sizeof(md));
}
} // namespace p2pool