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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* Although this is not an exported header file, code which uses elliptic

 * curve point operations will need to include it. */

#ifndef __ecl_h_

#define __ecl_h_

#include "blapi.h"

#include "ecl-exp.h"

#include "mpi.h"

#include "eclt.h"

struct ECGroupStr;

typedef struct ECGroupStr ECGroup;

/* Construct ECGroup from named parameters. */

ECGroup *ECGroup_fromName(const ECCurveName name);

/* Free an allocated ECGroup. */

void ECGroup_free(ECGroup *group);

/* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k * P(x,

 * y).  If x, y = NULL, then P is assumed to be the generator (base point)

 * of the group of points on the elliptic curve. Input and output values

 * are assumed to be NOT field-encoded. */

mp_err ECPoint_mul(const ECGroup *group, const mp_int *k, const mp_int *px,

                   const mp_int *py, mp_int *qx, mp_int *qy);

/* Elliptic curve scalar-point multiplication. Computes Q(x, y) = k1 * G +

 * k2 * P(x, y), where G is the generator (base point) of the group of

 * points on the elliptic curve. Input and output values are assumed to

 * be NOT field-encoded. */

mp_err ECPoints_mul(const ECGroup *group, const mp_int *k1,

                    const mp_int *k2, const mp_int *px, const mp_int *py,

                    mp_int *qx, mp_int *qy);

/* Validates an EC public key as described in Section 5.2.2 of X9.62.

 * Returns MP_YES if the public key is valid, MP_NO if the public key

 * is invalid, or an error code if the validation could not be

 * performed. */

mp_err ECPoint_validate(const ECGroup *group, const mp_int *px, const mp_int *py);

SECStatus ec_Curve25519_pt_mul(SECItem *X, SECItem *k, SECItem *P);

SECStatus ec_Curve25519_pt_validate(const SECItem *px);

SECStatus ec_Curve25519_scalar_validate(const SECItem *scalar);

SECStatus ec_secp256r1_pt_mul(SECItem *X, SECItem *k, SECItem *P);

SECStatus ec_secp256r1_pt_validate(const SECItem *px);

SECStatus ec_secp256r1_scalar_validate(const SECItem *scalar);

SECStatus ec_secp256r1_sign_digest(ECPrivateKey *key, SECItem *signature,

                                   const SECItem *digest, const unsigned char *kb,

                                   const unsigned int kblen);

SECStatus ec_secp256r1_verify_digest(ECPublicKey *key, const SECItem *signature,

                                     const SECItem *digest);

SECStatus ec_secp384r1_scalar_validate(const SECItem *scalar);

SECStatus ec_secp521r1_scalar_validate(const SECItem *scalar);

#endif /* __ecl_h_ */