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Variable time normalize

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This commit is contained in:
Pieter Wuille
2014-12-05 03:37:42 +01:00
parent ad86bdf1f2
commit 39bd94d86d
12 changed files with 160 additions and 48 deletions
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7
src/group.h
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@@ -51,15 +51,16 @@ static void secp256k1_ge_set_xy(secp256k1_ge_t *r, const secp256k1_fe_t *x, cons
/** Set a group element (affine) equal to the point with the given X coordinate, and given oddness
* for Y. Return value indicates whether the result is valid. */
static int secp256k1_ge_set_xo(secp256k1_ge_t *r, const secp256k1_fe_t *x, int odd);
static int secp256k1_ge_set_xo_var(secp256k1_ge_t *r, const secp256k1_fe_t *x, int odd);
/** Check whether a group element is the point at infinity. */
static int secp256k1_ge_is_infinity(const secp256k1_ge_t *a);
/** Check whether a group element is valid (i.e., on the curve). */
static int secp256k1_ge_is_valid(const secp256k1_ge_t *a);
static int secp256k1_ge_is_valid_var(const secp256k1_ge_t *a);
static void secp256k1_ge_neg(secp256k1_ge_t *r, const secp256k1_ge_t *a);
static void secp256k1_ge_neg_var(secp256k1_ge_t *r, const secp256k1_ge_t *a);
/** Get a hex representation of a point. *rlen will be overwritten with the real length. */
static void secp256k1_ge_get_hex(char *r, int *rlen, const secp256k1_ge_t *a);
@@ -84,7 +85,7 @@ static void secp256k1_gej_set_ge(secp256k1_gej_t *r, const secp256k1_ge_t *a);
static void secp256k1_gej_get_x_var(secp256k1_fe_t *r, const secp256k1_gej_t *a);
/** Set r equal to the inverse of a (i.e., mirrored around the X axis) */
static void secp256k1_gej_neg(secp256k1_gej_t *r, const secp256k1_gej_t *a);
static void secp256k1_gej_neg_var(secp256k1_gej_t *r, const secp256k1_gej_t *a);
/** Check whether a group element is the point at infinity. */
static int secp256k1_gej_is_infinity(const secp256k1_gej_t *a);