From 1136bedbc2d4155a506bab1358b80bc6ea22628b Mon Sep 17 00:00:00 2001 From: Pieter Wuille Date: Sat, 13 Sep 2014 00:46:32 +0200 Subject: [PATCH] Make secp256k1_ge_set_gej work with the point at infinity --- src/group_impl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/group_impl.h b/src/group_impl.h index 8951882..0fed945 100644 --- a/src/group_impl.h +++ b/src/group_impl.h @@ -55,13 +55,16 @@ void static secp256k1_ge_get_hex(char *r, int *rlen, const secp256k1_ge_t *a) { } void static secp256k1_ge_set_gej(secp256k1_ge_t *r, secp256k1_gej_t *a) { + r->infinity = a->infinity; + if (a->infinity) { + return; + } secp256k1_fe_inv_var(&a->z, &a->z); secp256k1_fe_t z2; secp256k1_fe_sqr(&z2, &a->z); secp256k1_fe_t z3; secp256k1_fe_mul(&z3, &a->z, &z2); secp256k1_fe_mul(&a->x, &a->x, &z2); secp256k1_fe_mul(&a->y, &a->y, &z3); secp256k1_fe_set_int(&a->z, 1); - r->infinity = a->infinity; r->x = a->x; r->y = a->y; }