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Add another optblocker

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This commit is contained in:
Frank Denis 2024-10-23 18:42:20 +02:00
parent 7154fb9041
commit b1f9c53875
1 changed files with 3 additions and 8 deletions
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11
src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
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@ -609,15 +609,10 @@ ge25519_precomp_0(ge25519_precomp *h)
static unsigned char
equal(signed char b, signed char c)
{
unsigned char ub = b;
unsigned char uc = c;
unsigned char x = ub ^ uc; /* 0: yes; 1..255: no */
uint32_t y = (uint32_t) x; /* 0: yes; 1..255: no */
const unsigned char x = (unsigned char) b ^ (unsigned char) c; /* 0: yes; 1..255: no */
const uint32_t y = (uint32_t) x; /* 0: yes; 1..255: no */
y -= 1; /* 4294967295: yes; 0..254: no */
y >>= 31; /* 1: yes; 0: no */
return y;
return (((y - 1) >> 29) ^ optblocker_u8) >> 2; /* 1: yes; 0: no */
}
static unsigned char