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New function declarations.

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This commit is contained in:
Bodo Möller 2001-03-06 07:01:51 +00:00
parent 7d7db13e67
commit fb171e534e
2 changed files with 20 additions and 5 deletions
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5
crypto/ec/ec.h
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@ -129,6 +129,11 @@ int EC_POINT_oct2point(const EC_GROUP *, EC_POINT *,
int EC_POINT_add(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
int EC_POINT_dbl(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, BN_CTX *);
int EC_POINT_is_at_infinity(const EC_GROUP *, EC_POINT *, BN_CTX *);
int EC_POINT_is_on_curve(const EC_GROUP *, EC_POINT *, BN_CTX *);
int EC_POINT_make_affine(const EC_GROUP *, EC_POINT *, BN_CTX *);
/* TODO: scalar multiplication */

20
crypto/ec/ec_lcl.h
View file

@ -95,6 +95,11 @@ struct ec_method_st {
int (*add)(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
int (*dbl)(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, BN_CTX *);
/* used by EC_POINT_is_at_infinity, EC_POINT_is_on_curve, EC_POINT_make_affine */
int (*is_at_infinity)(const EC_GROUP *, EC_POINT *, BN_CTX *);
int (*is_on_curve)(const EC_GROUP *, EC_POINT *, BN_CTX *);
int (*make_affine)(const EC_GROUP *, EC_POINT *, BN_CTX *);
/* internal functions */
@ -118,7 +123,11 @@ struct ec_group_st {
BIGNUM a, b; /* Curve coefficients.
* (Here the assumption is that BIGNUMs can be used
* or abused for all kinds of fields, not just GF(p).) */
* or abused for all kinds of fields, not just GF(p).)
* For characteristic > 3, the curve is defined
* by a Weierstrass equation of the form
* Y^2 = X^3 + a*X + b.
*/
int a_is_minus3; /* enable optimized point arithmetics for special case */
EC_POINT *generator; /* optional */
@ -131,8 +140,9 @@ struct ec_group_st {
struct ec_point_st {
EC_METHOD *meth;
BIGNUM x;
BIGNUM y;
BIGNUM z; /* Jacobian projective coordinates */
int z_is_one; /* enable optimized point arithmetics for special case */
BIGNUM X;
BIGNUM Y;
BIGNUM Z; /* Jacobian projective coordinates:
* (X, Y, Z) represents (X/Z^2, Y/Z^3) if Z != 0 */
int Z_is_one; /* enable optimized point arithmetics for special case */
} /* EC_POINT */;