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Abstract out verify logic for fe_get_b32

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This commit is contained in:
Pieter Wuille
2022-01-28 18:23:54 -05:00
parent f7a7666aeb
commit 144670893e
4 changed files with 14 additions and 11 deletions
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6
src/field_10x26_impl.h
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@@ -314,11 +314,7 @@ static int secp256k1_fe_impl_set_b32(secp256k1_fe *r, const unsigned char *a) {
}
/** Convert a field element to a 32-byte big endian value. Requires the input to be normalized */
static void secp256k1_fe_get_b32(unsigned char *r, const secp256k1_fe *a) {
#ifdef VERIFY
VERIFY_CHECK(a->normalized);
secp256k1_fe_verify(a);
#endif
static void secp256k1_fe_impl_get_b32(unsigned char *r, const secp256k1_fe *a) {
r[0] = (a->n[9] >> 14) & 0xff;
r[1] = (a->n[9] >> 6) & 0xff;
r[2] = ((a->n[9] & 0x3F) << 2) | ((a->n[8] >> 24) & 0x3);