/*

 * Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved.

 * Use is subject to license terms.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this library; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/* *********************************************************************

 *

 * The Original Code is the Netscape security libraries.

 *

 * The Initial Developer of the Original Code is

 * Netscape Communications Corporation.

 * Portions created by the Initial Developer are Copyright (C) 1994-2000

 * the Initial Developer. All Rights Reserved.

 *

 * Contributor(s):

 *   Dr Vipul Gupta <vipul.gupta@sun.com> and

 *   Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories

 *

 * Last Modified Date from the Original Code: May 2017

 *********************************************************************** */

#ifndef _ECC_IMPL_H

#define _ECC_IMPL_H

#ifdef __cplusplus

extern "C" {

#endif

#include <sys/types.h>

#include "ecl-exp.h"

/*

 * Multi-platform definitions

 */

#ifdef __linux__

#define B_FALSE FALSE

#define B_TRUE TRUE

typedef unsigned char uint8_t;

typedef unsigned long ulong_t;

typedef enum { B_FALSE, B_TRUE } boolean_t;

#endif /* __linux__ */

#ifdef _ALLBSD_SOURCE

#include <stdint.h>

#define B_FALSE FALSE

#define B_TRUE TRUE

typedef unsigned long ulong_t;

typedef enum boolean { B_FALSE, B_TRUE } boolean_t;

#endif /* _ALLBSD_SOURCE */

#ifdef AIX

#define B_FALSE FALSE

#define B_TRUE TRUE

typedef unsigned char uint8_t;

typedef unsigned long ulong_t;

#endif /* AIX */

#ifdef _WIN32

typedef unsigned char uint8_t;

typedef unsigned long ulong_t;

typedef enum boolean { B_FALSE, B_TRUE } boolean_t;

#define strdup _strdup          /* Replace POSIX name with ISO C++ name */

#endif /* _WIN32 */

#ifndef _KERNEL

#include <stdlib.h>

#endif  /* _KERNEL */

#define EC_MAX_DIGEST_LEN 1024  /* max digest that can be signed */

#define EC_MAX_POINT_LEN 145    /* max len of DER encoded Q */

#define EC_MAX_VALUE_LEN 72     /* max len of ANSI X9.62 private value d */

#define EC_MAX_SIG_LEN 144      /* max signature len for supported curves */

#define EC_MIN_KEY_LEN  112     /* min key length in bits */

#define EC_MAX_KEY_LEN  571     /* max key length in bits */

#define EC_MAX_OID_LEN 10       /* max length of OID buffer */

/*

 * Various structures and definitions from NSS are here.

 */

#ifdef _KERNEL

#define PORT_ArenaAlloc(a, n, f)        kmem_alloc((n), (f))

#define PORT_ArenaZAlloc(a, n, f)       kmem_zalloc((n), (f))

#define PORT_ArenaGrow(a, b, c, d)      NULL

#define PORT_ZAlloc(n, f)               kmem_zalloc((n), (f))

#define PORT_Alloc(n, f)                kmem_alloc((n), (f))

#else

#define PORT_ArenaAlloc(a, n, f)        malloc((n))

#define PORT_ArenaZAlloc(a, n, f)       calloc(1, (n))

#define PORT_ArenaGrow(a, b, c, d)      NULL

#define PORT_ZAlloc(n, f)               calloc(1, (n))

#define PORT_Alloc(n, f)                malloc((n))

#endif

#define PORT_NewArena(b)                (char *)12345

#define PORT_ArenaMark(a)               NULL

#define PORT_ArenaUnmark(a, b)

#define PORT_ArenaRelease(a, m)

#define PORT_FreeArena(a, b)

#define PORT_Strlen(s)                  strlen((s))

#define PORT_SetError(e)

#define PRBool                          boolean_t

#define PR_TRUE                         B_TRUE

#define PR_FALSE                        B_FALSE

#ifdef _KERNEL

#define PORT_Assert                     ASSERT

#define PORT_Memcpy(t, f, l)            bcopy((f), (t), (l))

#else

#define PORT_Assert                     assert

#define PORT_Memcpy(t, f, l)            memcpy((t), (f), (l))

#endif

#define CHECK_OK(func) if (func == NULL) goto cleanup

#define CHECK_SEC_OK(func) if (SECSuccess != (rv = func)) goto cleanup

typedef enum {

        siBuffer = 0,

        siClearDataBuffer = 1,

        siCipherDataBuffer = 2,

        siDERCertBuffer = 3,

        siEncodedCertBuffer = 4,

        siDERNameBuffer = 5,

        siEncodedNameBuffer = 6,

        siAsciiNameString = 7,

        siAsciiString = 8,

        siDEROID = 9,

        siUnsignedInteger = 10,

        siUTCTime = 11,

        siGeneralizedTime = 12

} SECItemType;

typedef struct SECItemStr SECItem;

struct SECItemStr {

        SECItemType type;

        unsigned char *data;

        unsigned int len;

};

typedef SECItem SECKEYECParams;

typedef enum { ec_params_explicit,

               ec_params_named

} ECParamsType;

typedef enum { ec_field_GFp = 1,

               ec_field_GF2m

} ECFieldType;

struct ECFieldIDStr {

    int         size;   /* field size in bits */

    ECFieldType type;

    union {

        SECItem  prime; /* prime p for (GFp) */

        SECItem  poly;  /* irreducible binary polynomial for (GF2m) */

    } u;

    int         k1;     /* first coefficient of pentanomial or

                         * the only coefficient of trinomial

                         */

    int         k2;     /* two remaining coefficients of pentanomial */

    int         k3;

};

typedef struct ECFieldIDStr ECFieldID;

struct ECCurveStr {

        SECItem a;      /* contains octet stream encoding of

                         * field element (X9.62 section 4.3.3)

                         */

        SECItem b;

        SECItem seed;

};

typedef struct ECCurveStr ECCurve;

typedef void PRArenaPool;

struct ECParamsStr {

    PRArenaPool * arena;

    ECParamsType  type;

    ECFieldID     fieldID;

    ECCurve       curve;

    SECItem       base;

    SECItem       order;

    int           cofactor;

    SECItem       DEREncoding;

    ECCurveName   name;

    SECItem       curveOID;

};

typedef struct ECParamsStr ECParams;

struct ECPublicKeyStr {

    ECParams ecParams;

    SECItem publicValue;   /* elliptic curve point encoded as

                            * octet stream.

                            */

};

typedef struct ECPublicKeyStr ECPublicKey;

struct ECPrivateKeyStr {

    ECParams ecParams;

    SECItem publicValue;   /* encoded ec point */

    SECItem privateValue;  /* private big integer */

    SECItem version;       /* As per SEC 1, Appendix C, Section C.4 */

};

typedef struct ECPrivateKeyStr ECPrivateKey;

typedef enum _SECStatus {

        SECBufferTooSmall = -3,

        SECWouldBlock = -2,

        SECFailure = -1,

        SECSuccess = 0

} SECStatus;

#ifdef _KERNEL

#define RNG_GenerateGlobalRandomBytes(p,l) ecc_knzero_random_generator((p), (l))

#else

/*

 This function is no longer required because the random bytes are now

 supplied by the caller. Force a failure.

*/

#define RNG_GenerateGlobalRandomBytes(p,l) SECFailure

#endif

#define CHECK_MPI_OK(func) if (MP_OKAY > (err = func)) goto cleanup

#define MP_TO_SEC_ERROR(err)

#define SECITEM_TO_MPINT(it, mp)                                        \

        CHECK_MPI_OK(mp_read_unsigned_octets((mp), (it).data, (it).len))

extern int ecc_knzero_random_generator(uint8_t *, size_t);

extern ulong_t soft_nzero_random_generator(uint8_t *, ulong_t);

extern SECStatus EC_DecodeParams(const SECItem *, ECParams **, int);

extern SECItem * SECITEM_AllocItem(PRArenaPool *, SECItem *, unsigned int, int);

extern SECStatus SECITEM_CopyItem(PRArenaPool *, SECItem *, const SECItem *,

    int);

extern void SECITEM_FreeItem(SECItem *, boolean_t);

/* This function has been modified to accept an array of random bytes */

extern SECStatus EC_NewKey(ECParams *ecParams, ECPrivateKey **privKey,

    const unsigned char* random, int randomlen, int);

/* This function has been modified to accept an array of random bytes */

extern SECStatus ECDSA_SignDigest(ECPrivateKey *, SECItem *, const SECItem *,

    const unsigned char* random, int randomlen, int, int timing);

extern SECStatus ECDSA_VerifyDigest(ECPublicKey *, const SECItem *,

    const SECItem *, int);

extern SECStatus ECDH_Derive(SECItem *, ECParams *, SECItem *, boolean_t,

    SECItem *, int);

#ifdef  __cplusplus

}

#endif

#endif /* _ECC_IMPL_H */