-/* TODO */
/* crypto/ec/ec_lcl.h */
/* ====================================================================
* Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
int (*group_set_generator)(EC_GROUP *, const EC_POINT *generator,
const BIGNUM *order, const BIGNUM *cofactor);
- /* TODO: 'set' functions for EC_GROUPs */
+ /* TODO: 'set' and 'get' functions for EC_GROUPs */
/* used by EC_POINT_new, EC_POINT_free, EC_POINT_copy: */
struct ec_group_st {
const EC_METHOD *meth;
- /* All members except 'meth' are handled by the method functions,
- * even if they appear generic */
+ void *extra_data;
+ void *(*extra_data_dup_func)(void *);
+ void (*extra_data_free_func)(void *);
+ void (*extra_data_clear_free_func)(void *);
+
+ /* All members except 'meth' and 'extra_data...' are handled by
+ * the method functions, even if they appear generic */
BIGNUM field; /* Field specification.
* For curves over GF(p), this is the modulus. */
EC_POINT *generator; /* optional */
BIGNUM order, cofactor;
-
- /* optional Lim/Lee precomputation table */
} /* EC_GROUP */;
+/* Basically a 'mixin' for extra data, but available for EC_GROUPs only
+ * (with visibility limited to 'package' level for now).
+ * We use the function pointers as index for retrieval; this obviates
+ * global ex_data-style index tables.
+ * (Currently, we have one slot only, but is is possible to extend this
+ * if necessary.) */
+int EC_GROUP_set_extra_data(EC_GROUP *, void *extra_data, void *(*extra_data_dup_func)(void *),
+ void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *));
+void *EC_GROUP_get_extra_data(EC_GROUP *, void *(*extra_data_dup_func)(void *),
+ void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *));
+void EC_GROUP_free_extra_data(EC_GROUP *);
+void EC_GROUP_clear_free_extra_data(EC_GROUP *);
+
+
+
struct ec_point_st {
const EC_METHOD *meth;
* (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 */;
+
+
+
+/* method functions in ecp_smpl.c */
+int ec_GFp_simple_group_init(EC_GROUP *);
+int ec_GFp_simple_group_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+void ec_GFp_simple_group_finish(EC_GROUP *);
+void ec_GFp_simple_group_clear_finish(EC_GROUP *);
+int ec_GFp_simple_group_copy(EC_GROUP *, const EC_GROUP *);
+int ec_GFp_simple_group_set_generator(EC_GROUP *, const EC_POINT *generator,
+ const BIGNUM *order, const BIGNUM *cofactor);
+/* TODO: 'set' and 'get' functions for EC_GROUPs */
+int ec_GFp_simple_point_init(EC_POINT *);
+void ec_GFp_simple_point_finish(EC_POINT *);
+void ec_GFp_simple_point_clear_finish(EC_POINT *);
+int ec_GFp_simple_point_copy(EC_POINT *, const EC_POINT *);
+/* TODO: 'set' and 'get' functions for EC_POINTs */
+size_t ec_GFp_simple_point2oct(const EC_GROUP *, const EC_POINT *, point_conversion_form_t form,
+ unsigned char *buf, size_t len, BN_CTX *);
+int ec_GFp_simple_oct2point(const EC_GROUP *, EC_POINT *,
+ const unsigned char *buf, size_t len, BN_CTX *);
+int ec_GFp_simple_add(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
+int ec_GFp_simple_dbl(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, BN_CTX *);
+int ec_GFp_simple_is_at_infinity(const EC_GROUP *, const EC_POINT *);
+int ec_GFp_simple_is_on_curve(const EC_GROUP *, const EC_POINT *, BN_CTX *);
+int ec_GFp_simple_make_affine(const EC_GROUP *, const EC_POINT *, BN_CTX *);
+int ec_GFp_simple_field_mult(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+int ec_GFp_simple_field_sqr(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+
+
+/* method functions in ecp_mont.c */
+int ec_GFp_mont_group_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+void ec_GFp_mont_group_finish(EC_GROUP *);
+void ec_GFp_mont_group_clear_finish(EC_GROUP *);
+int ec_GFp_mont_field_mult(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+int ec_GFp_mont_field_sqr(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_mont_field_encode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_mont_field_decode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+
+
+/* method functions in ecp_recp.c */
+int ec_GFp_recp_group_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+void ec_GFp_recp_group_finish(EC_GROUP *);
+void ec_GFp_recp_group_clear_finish(EC_GROUP *);
+int ec_GFp_recp_field_mult(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+int ec_GFp_recp_field_sqr(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_recp_field_encode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_recp_field_decode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+
+
+/* method functions in ecp_nist.c */
+int ec_GFp_nist_group_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+void ec_GFp_nist_group_finish(EC_GROUP *);
+void ec_GFp_nist_group_clear_finish(EC_GROUP *);
+int ec_GFp_nist_field_mult(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+int ec_GFp_nist_field_sqr(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_nist_field_encode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
+int ec_GFp_nist_field_decode(const EC_GROUP *, BIGNUM *r, const BIGNUM *a, BN_CTX *);
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