frost/secp256k1-zkp
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Merge commits '115b135f c8206b1c b6c2a3cd e7f7083b be5e4f02 5c751833 540fec8a aa2a39c1 8d445730 f9a944ff 2d9137ce 4721e077 471e3a13 ebb35882 1a53f496 c7a52400 ' into temp-merge-1809

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mllwchrry
2026-03-02 15:56:43 +02:00
parent 4e14d0ef67 c7a52400d6
commit 07d4de6433
32 changed files with 302 additions and 180 deletions
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src/scalar_8x32_impl.h
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@@ -162,6 +162,7 @@ static int secp256k1_scalar_add(secp256k1_scalar *r, const secp256k1_scalar *a,
static void secp256k1_scalar_cadd_bit(secp256k1_scalar *r, unsigned int bit, int flag) {
uint64_t t;
volatile int vflag = flag;
VERIFY_CHECK(flag == 0 || flag == 1);
SECP256K1_SCALAR_VERIFY(r);
VERIFY_CHECK(bit < 256);
@@ -329,6 +330,7 @@ static int secp256k1_scalar_cond_negate(secp256k1_scalar *r, int flag) {
uint32_t mask = -vflag;
uint32_t nonzero = 0xFFFFFFFFUL * (secp256k1_scalar_is_zero(r) == 0);
uint64_t t = (uint64_t)(r->d[0] ^ mask) + ((SECP256K1_N_0 + 1) & mask);
VERIFY_CHECK(flag == 0 || flag == 1);
SECP256K1_SCALAR_VERIFY(r);
r->d[0] = t & nonzero; t >>= 32;
@@ -813,6 +815,7 @@ SECP256K1_INLINE static void secp256k1_scalar_mul_shift_var(secp256k1_scalar *r,
static SECP256K1_INLINE void secp256k1_scalar_cmov(secp256k1_scalar *r, const secp256k1_scalar *a, int flag) {
uint32_t mask0, mask1;
volatile int vflag = flag;
VERIFY_CHECK(flag == 0 || flag == 1);
SECP256K1_SCALAR_VERIFY(a);
SECP256K1_CHECKMEM_CHECK_VERIFY(r->d, sizeof(r->d));