/* crypto/ec/ec.h */
/* ====================================================================
- * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#define HEADER_EC_H
#ifdef OPENSSL_NO_EC
-#error Elliptic curves are disabled.
+#error EC is disabled.
#endif
#include <openssl/bn.h>
-- field definition
-- curve coefficients
-- optional generator with associated information (order, cofactor)
- -- optional extra data (Lim/Lee precomputation table)
+ -- optional extra data (TODO: precomputed table for fast computation of multiples of generator)
*/
EC_GROUP;
*/
const EC_METHOD *EC_GFp_simple_method(void);
const EC_METHOD *EC_GFp_mont_method(void);
+#if 0
const EC_METHOD *EC_GFp_recp_method(void); /* TODO */
const EC_METHOD *EC_GFp_nist_method(void); /* TODO */
+#endif
EC_GROUP *EC_GROUP_new(const EC_METHOD *);
void EC_GROUP_clear_free(EC_GROUP *);
int EC_GROUP_copy(EC_GROUP *, const EC_GROUP *);
+void EC_GROUP_set_nid(EC_GROUP *, int);
+int EC_GROUP_get_nid(const EC_GROUP *);
+
const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
-
+
/* We don't have types for field specifications and field elements in general.
* Otherwise we could declare
int EC_GROUP_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
int EC_GROUP_get_curve_GFp(const EC_GROUP *, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *);
-/* EC_GROUP_new_GFp() calls EC_GROUP_new() and EC_GROUP_set_GFp()
- * after choosing an appropriate EC_METHOD */
-EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
-
int EC_GROUP_set_generator(EC_GROUP *, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor);
EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *);
int EC_GROUP_get_order(const EC_GROUP *, BIGNUM *order, BN_CTX *);
int EC_GROUP_get_cofactor(const EC_GROUP *, BIGNUM *cofactor, BN_CTX *);
+/* EC_GROUP_check() returns 1 if 'group' defines a valid group, 0 otherwise */
+int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
+/* EC_GROUP_check_discriminant() returns 1 if the discriminant of the
+ * elliptic curve is not zero, 0 otherwise */
+int EC_GROUP_check_discriminant(const EC_GROUP *, BN_CTX *);
+
+/* EC_GROUP_new_GFp() calls EC_GROUP_new() and EC_GROUP_set_GFp()
+ * after choosing an appropriate EC_METHOD */
+EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
+
+/* EC_GROUP_new_by_nid() and EC_GROUP_new_by_name() also set
+ * generator and order */
+EC_GROUP *EC_GROUP_new_by_nid(int nid);
+EC_GROUP *EC_GROUP_new_by_name(int name);
+/* Currently valid arguments to EC_GROUP_new_by_name() */
+#define EC_GROUP_NO_CURVE 0
+#define EC_GROUP_NIST_PRIME_192 NID_X9_62_prime192v1
+#define EC_GROUP_NIST_PRIME_224 NID_secp224r1
+#define EC_GROUP_NIST_PRIME_256 NID_X9_62_prime256v1
+#define EC_GROUP_NIST_PRIME_384 NID_secp384r1
+#define EC_GROUP_NIST_PRIME_521 NID_secp521r1
+#define EC_GROUP_X9_62_PRIME_192V1 NID_X9_62_prime192v1
+#define EC_GROUP_X9_62_PRIME_192V2 NID_X9_62_prime192v2
+#define EC_GROUP_X9_62_PRIME_192V3 NID_X9_62_prime192v3
+#define EC_GROUP_X9_62_PRIME_239V1 NID_X9_62_prime239v1
+#define EC_GROUP_X9_62_PRIME_239V2 NID_X9_62_prime239v2
+#define EC_GROUP_X9_62_PRIME_239V3 NID_X9_62_prime239v3
+#define EC_GROUP_X9_62_PRIME_256V1 NID_X9_62_prime256v1
+#define EC_GROUP_SECG_PRIME_112R1 NID_secp112r1
+#define EC_GROUP_SECG_PRIME_112R2 NID_secp112r2
+#define EC_GROUP_SECG_PRIME_128R1 NID_secp128r1
+#define EC_GROUP_SECG_PRIME_128R2 NID_secp128r2
+#define EC_GROUP_SECG_PRIME_160K1 NID_secp160k1
+#define EC_GROUP_SECG_PRIME_160R1 NID_secp160r1
+#define EC_GROUP_SECG_PRIME_160R2 NID_secp160r2
+#define EC_GROUP_SECG_PRIME_192K1 NID_secp192k1
+#define EC_GROUP_SECG_PRIME_192R1 NID_X9_62_prime192v1
+#define EC_GROUP_SECG_PRIME_224K1 NID_secp224k1
+#define EC_GROUP_SECG_PRIME_224R1 NID_secp224r1
+#define EC_GROUP_SECG_PRIME_256K1 NID_secp256k1
+#define EC_GROUP_SECG_PRIME_256R1 NID_X9_62_prime256v1
+#define EC_GROUP_SECG_PRIME_384R1 NID_secp384r1
+#define EC_GROUP_SECG_PRIME_521R1 NID_secp521r1
+#define EC_GROUP_WTLS_6 NID_wap_wsg_idm_ecid_wtls6
+#define EC_GROUP_WTLS_7 NID_secp160r1
+#define EC_GROUP_WTLS_8 NID_wap_wsg_idm_ecid_wtls8
+#define EC_GROUP_WTLS_9 NID_wap_wsg_idm_ecid_wtls9
+#define EC_GROUP_WTLS_12 NID_secp224r1
+
EC_POINT *EC_POINT_new(const EC_GROUP *);
void EC_POINT_free(EC_POINT *);
void EC_POINT_clear_free(EC_POINT *);
/* Error codes for the EC functions. */
/* Function codes. */
+#define EC_F_COMPUTE_WNAF 143
#define EC_F_EC_GFP_MONT_FIELD_DECODE 133
#define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
#define EC_F_EC_GFP_MONT_FIELD_MUL 131
#define EC_F_EC_GFP_MONT_FIELD_SQR 132
+#define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 152
#define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP 100
#define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 101
#define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
#define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
#define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
#define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
+#define EC_F_EC_GROUP_CHECK 150
+#define EC_F_EC_GROUP_CHECK_DISCRIMINANT 153
#define EC_F_EC_GROUP_COPY 106
#define EC_F_EC_GROUP_GET0_GENERATOR 139
#define EC_F_EC_GROUP_GET_COFACTOR 140
#define EC_F_EC_GROUP_GET_CURVE_GFP 130
#define EC_F_EC_GROUP_GET_EXTRA_DATA 107
#define EC_F_EC_GROUP_GET_ORDER 141
+#define EC_F_EC_GROUP_GROUP2NID 147
#define EC_F_EC_GROUP_NEW 108
+#define EC_F_EC_GROUP_NEW_BY_NAME 144
+#define EC_F_EC_GROUP_NEW_BY_NID 146
+#define EC_F_EC_GROUP_NEW_GFP_FROM_HEX 148
#define EC_F_EC_GROUP_PRECOMPUTE_MULT 142
#define EC_F_EC_GROUP_SET_CURVE_GFP 109
#define EC_F_EC_GROUP_SET_EXTRA_DATA 110
/* Reason codes. */
#define EC_R_BUFFER_TOO_SMALL 100
+#define EC_R_DISCRIMINANT_IS_ZERO 118
#define EC_R_INCOMPATIBLE_OBJECTS 101
#define EC_R_INVALID_ARGUMENT 112
#define EC_R_INVALID_COMPRESSED_POINT 110
#define EC_R_INVALID_ENCODING 102
#define EC_R_INVALID_FIELD 103
#define EC_R_INVALID_FORM 104
+#define EC_R_INVALID_GROUP_ORDER 119
#define EC_R_NOT_INITIALIZED 111
#define EC_R_NO_SUCH_EXTRA_DATA 105
#define EC_R_POINT_AT_INFINITY 106
#define EC_R_POINT_IS_NOT_ON_CURVE 107
#define EC_R_SLOT_FULL 108
#define EC_R_UNDEFINED_GENERATOR 113
+#define EC_R_UNDEFINED_ORDER 122
+#define EC_R_UNKNOWN_GROUP 116
+#define EC_R_UNKNOWN_NID 117
#define EC_R_UNKNOWN_ORDER 114
#ifdef __cplusplus
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