00001
00027 #ifndef POLARSSL_ECDH_H
00028 #define POLARSSL_ECDH_H
00029
00030 #include "ecp.h"
00031
00032 #ifdef __cplusplus
00033 extern "C" {
00034 #endif
00035
00039 typedef struct
00040 {
00041 ecp_group grp;
00042 mpi d;
00043 ecp_point Q;
00044 ecp_point Qp;
00045 mpi z;
00046 int point_format;
00047 ecp_point Vi;
00048 ecp_point Vf;
00049 mpi _d;
00050 }
00051 ecdh_context;
00052
00065 int ecdh_gen_public( ecp_group *grp, mpi *d, ecp_point *Q,
00066 int (*f_rng)(void *, unsigned char *, size_t),
00067 void *p_rng );
00068
00086 int ecdh_compute_shared( ecp_group *grp, mpi *z,
00087 const ecp_point *Q, const mpi *d,
00088 int (*f_rng)(void *, unsigned char *, size_t),
00089 void *p_rng );
00090
00096 void ecdh_init( ecdh_context *ctx );
00097
00103 void ecdh_free( ecdh_context *ctx );
00104
00120 int ecdh_make_params( ecdh_context *ctx, size_t *olen,
00121 unsigned char *buf, size_t blen,
00122 int (*f_rng)(void *, unsigned char *, size_t),
00123 void *p_rng );
00124
00134 int ecdh_read_params( ecdh_context *ctx,
00135 const unsigned char **buf, const unsigned char *end );
00136
00149 int ecdh_make_public( ecdh_context *ctx, size_t *olen,
00150 unsigned char *buf, size_t blen,
00151 int (*f_rng)(void *, unsigned char *, size_t),
00152 void *p_rng );
00153
00163 int ecdh_read_public( ecdh_context *ctx,
00164 const unsigned char *buf, size_t blen );
00165
00178 int ecdh_calc_secret( ecdh_context *ctx, size_t *olen,
00179 unsigned char *buf, size_t blen,
00180 int (*f_rng)(void *, unsigned char *, size_t),
00181 void *p_rng );
00182
00188 int ecdh_self_test( int verbose );
00189
00190 #ifdef __cplusplus
00191 }
00192 #endif
00193
00194 #endif
