/* 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
#ifndef HEADER_EC_H
#define HEADER_EC_H
+#ifdef OPENSSL_NO_EC
+#error EC is disabled.
+#endif
+
#include <openssl/bn.h>
+#include <openssl/asn1.h>
+#include <openssl/symhacks.h>
#ifdef __cplusplus
extern "C" {
#endif
-
typedef enum {
+ /* values as defined in X9.62 (ECDSA) and elsewhere */
POINT_CONVERSION_COMPRESSED = 2,
POINT_CONVERSION_UNCOMPRESSED = 4,
POINT_CONVERSION_HYBRID = 6
-- field definition
-- curve coefficients
-- optional generator with associated information (order, cofactor)
- -- optional Lim/Lee precomputation table
+ -- optional extra data (TODO: precomputed table for fast computation of multiples of generator)
*/
EC_GROUP;
/* EC_METHODs for curves over GF(p).
* EC_GFp_simple_method provides the basis for the optimized methods.
*/
-
const EC_METHOD *EC_GFp_simple_method(void);
const EC_METHOD *EC_GFp_mont_method(void);
-const EC_METHOD *EC_GFp_recp_method(void);
-const EC_METHOD *EC_GFp_nist_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_free(EC_GROUP *);
+void EC_GROUP_clear_free(EC_GROUP *);
+int EC_GROUP_copy(EC_GROUP *, const EC_GROUP *);
+
+const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
+int EC_METHOD_get_field_type(const EC_METHOD *);
+
+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 *);
+
+void EC_GROUP_set_nid(EC_GROUP *, int);
+int EC_GROUP_get_nid(const EC_GROUP *);
+
+
/* We don't have types for field specifications and field elements in general.
- * Otherwise we would declare
+ * Otherwise we could declare
* int EC_GROUP_set_curve(EC_GROUP *, .....);
*/
int EC_GROUP_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
-void EC_GROUP_free(EC_GROUP *);
-void EC_GROUP_clear_free(EC_GROUP *);
-int EC_GROUP_copy(EC_GROUP *, const EC_GROUP*);
+int EC_GROUP_get_curve_GFp(const EC_GROUP *, BIGNUM *p, BIGNUM *a, BIGNUM *b, 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 *);
-int EC_GROUP_set_generator(EC_GROUP *, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor);
-
-/* TODO: 'set' and 'get' functions for EC_GROUPs */
-
+/* 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 *);
int EC_POINT_copy(EC_POINT *, const EC_POINT *);
-/* TODO: 'set' and 'get' functions for EC_POINTs */
+const EC_METHOD *EC_POINT_method_of(const EC_POINT *);
+
+int EC_POINT_set_to_infinity(const EC_GROUP *, EC_POINT *);
+int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *, EC_POINT *,
+ const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *);
+int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *, const EC_POINT *,
+ BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *);
+int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *, EC_POINT *,
+ const BIGNUM *x, const BIGNUM *y, BN_CTX *);
+int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *, const EC_POINT *,
+ BIGNUM *x, BIGNUM *y, BN_CTX *);
+int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *, EC_POINT *,
+ const BIGNUM *x, int y_bit, BN_CTX *);
size_t EC_POINT_point2oct(const EC_GROUP *, const EC_POINT *, point_conversion_form_t form,
unsigned char *buf, size_t len, BN_CTX *);
int EC_POINT_oct2point(const EC_GROUP *, EC_POINT *,
const unsigned char *buf, size_t len, BN_CTX *);
+/* other interfaces to point2oct/oct2point: */
+BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
+ point_conversion_form_t form, BIGNUM *, BN_CTX *);
+EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
+ EC_POINT *, BN_CTX *);
+char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
+ point_conversion_form_t form, BN_CTX *);
+EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
+ EC_POINT *, BN_CTX *);
+
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_invert(const EC_GROUP *, EC_POINT *, BN_CTX *);
int EC_POINT_is_at_infinity(const EC_GROUP *, const EC_POINT *);
int EC_POINT_is_on_curve(const EC_GROUP *, const EC_POINT *, BN_CTX *);
+int EC_POINT_cmp(const EC_GROUP *, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
int EC_POINT_make_affine(const EC_GROUP *, EC_POINT *, BN_CTX *);
+int EC_POINTs_make_affine(const EC_GROUP *, size_t num, EC_POINT *[], BN_CTX *);
+
+
+int EC_POINTs_mul(const EC_GROUP *, EC_POINT *r, const BIGNUM *, size_t num, const EC_POINT *[], const BIGNUM *[], BN_CTX *);
+int EC_POINT_mul(const EC_GROUP *, EC_POINT *r, const BIGNUM *, const EC_POINT *, const BIGNUM *, BN_CTX *);
+int EC_GROUP_precompute_mult(EC_GROUP *, BN_CTX *);
+
+/* ASN1 stuff */
+#define OPENSSL_EC_NAMED_CURVE 0x001
-/* TODO: scalar multiplication */
+typedef struct ec_parameters_st ECPARAMETERS;
+typedef struct ecpk_parameters_st ECPKPARAMETERS;
+
+DECLARE_ASN1_ITEM(ECPARAMETERS)
+DECLARE_ASN1_ITEM(ECPKPARAMETERS)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPARAMETERS, ECPARAMETERS)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPKPARAMETERS, ECPKPARAMETERS)
+
+EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *);
+ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *, ECPKPARAMETERS *);
+
+void EC_GROUP_set_asn1_flag(EC_GROUP *, int flag);
+int EC_GROUP_get_asn1_flag(const EC_GROUP *);
+
+void EC_GROUP_set_point_conversion_form(EC_GROUP *, point_conversion_form_t);
+point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
+
+EC_GROUP *d2i_ECParameters(EC_GROUP **, const unsigned char **in, long len);
+int i2d_ECParameters(const EC_GROUP *, unsigned char **out);
+
+EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
+int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
/* The following lines are auto generated by the script mkerr.pl. Any changes
* made after this point may be overwritten when the script is next run.
*/
+void ERR_load_EC_strings(void);
/* Error codes for the EC functions. */
/* Function codes. */
-#define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 117
-#define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 118
-#define EC_F_EC_GROUP_CLEAR_FREE 103
-#define EC_F_EC_GROUP_COPY 102
-#define EC_F_EC_GROUP_FREE 104
-#define EC_F_EC_GROUP_GET_EXTRA_DATA 115
-#define EC_F_EC_GROUP_NEW 100
-#define EC_F_EC_GROUP_SET_CURVE_GFP 101
-#define EC_F_EC_GROUP_SET_EXTRA_DATA 116
-#define EC_F_EC_GROUP_SET_GENERATOR 106
-#define EC_F_EC_POINT_ADD 107
-#define EC_F_EC_POINT_COPY 108
-#define EC_F_EC_POINT_DBL 109
-#define EC_F_EC_POINT_IS_AT_INFINITY 110
-#define EC_F_EC_POINT_IS_ON_CURVE 111
-#define EC_F_EC_POINT_MAKE_AFFINE 112
-#define EC_F_EC_POINT_NEW 105
-#define EC_F_EC_POINT_OCT2POINT 113
-#define EC_F_EC_POINT_POINT2OCT 114
+#define EC_F_COMPUTE_WNAF 143
+#define EC_F_D2I_ECDSAPARAMETERS 154
+#define EC_F_D2I_ECPARAMETERS 155
+#define EC_F_D2I_ECPKPARAMETERS 161
+#define EC_F_EC_ASN1_GROUP2CURVE 159
+#define EC_F_EC_ASN1_GROUP2FIELDID 156
+#define EC_F_EC_ASN1_GROUP2PARAMETERS 160
+#define EC_F_EC_ASN1_GROUP2PKPARAMETERS 162
+#define EC_F_EC_ASN1_PARAMETERS2GROUP 157
+#define EC_F_EC_ASN1_PKPARAMETERS2GROUP 163
+#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_OCT2POINT 103
+#define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
+#define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
+#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
+#define EC_F_EC_GROUP_SET_GENERATOR 111
+#define EC_F_EC_POINTS_MAKE_AFFINE 136
+#define EC_F_EC_POINTS_MUL 138
+#define EC_F_EC_POINT_ADD 112
+#define EC_F_EC_POINT_CMP 113
+#define EC_F_EC_POINT_COPY 114
+#define EC_F_EC_POINT_DBL 115
+#define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
+#define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
+#define EC_F_EC_POINT_IS_AT_INFINITY 118
+#define EC_F_EC_POINT_IS_ON_CURVE 119
+#define EC_F_EC_POINT_MAKE_AFFINE 120
+#define EC_F_EC_POINT_NEW 121
+#define EC_F_EC_POINT_OCT2POINT 122
+#define EC_F_EC_POINT_POINT2OCT 123
+#define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
+#define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
+#define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
+#define EC_F_EC_POINT_SET_TO_INFINITY 127
+#define EC_F_GFP_MONT_GROUP_SET_CURVE_GFP 135
+#define EC_F_I2D_ECDSAPARAMETERS 158
+#define EC_F_I2D_ECPARAMETERS 164
+#define EC_F_I2D_ECPKPARAMETERS 165
/* Reason codes. */
-#define EC_R_INCOMPATIBLE_OBJECTS 100
-#define EC_R_NO_SUCH_EXTRA_DATA 101
-#define EC_R_SLOT_FULL 102
+#define EC_R_ASN1_ERROR 130
+#define EC_R_ASN1_UNKNOWN_FIELD 131
+#define EC_R_BUFFER_TOO_SMALL 100
+#define EC_R_D2I_ECPARAMETERS_FAILURE 132
+#define EC_R_D2I_ECPKPARAMETERS_FAILURE 133
+#define EC_R_D2I_EC_PARAMETERS_FAILURE 123
+#define EC_R_DISCRIMINANT_IS_ZERO 118
+#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 124
+#define EC_R_GROUP2PARAMETERS_FAILURE 125
+#define EC_R_GROUP2PKPARAMETERS_FAILURE 134
+#define EC_R_I2D_ECPKPARAMETERS_FAILURE 135
+#define EC_R_I2D_EC_PARAMETERS_FAILURE 126
+#define EC_R_INCOMPATIBLE_OBJECTS 101
+#define EC_R_INVALID_ARGUMENT 112
+#define EC_R_INVALID_COMPRESSED_POINT 110
+#define EC_R_INVALID_COMPRESSION_BIT 109
+#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_MISSING_PARAMETERS 127
+#define EC_R_NOT_IMPLEMENTED 136
+#define EC_R_NOT_INITIALIZED 111
+#define EC_R_NO_SUCH_EXTRA_DATA 105
+#define EC_R_PARAMETERS2GROUP_FAILURE 128
+#define EC_R_PKPARAMETERS2GROUP_FAILURE 137
+#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
+#define EC_R_UNKNOWN_PARAMETERS_TYPE 129
#ifdef __cplusplus
}
#endif
#endif
-
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