Commit fb171e53 authored by Bodo Möller's avatar Bodo Möller
Browse files

New function declarations.

parent 7d7db13e

crypto/ec/ec.h

+5 −0
Original line number Diff line number Diff line
@@ -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 */

crypto/ec/ec_lcl.h

+15 −5
Original line number Diff line number Diff line
@@ -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 */;