/* crypto/engine/hw_atalla.c */

/*

 * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project

 * 2000.

 */

/* ====================================================================

 * Copyright (c) 1999-2001 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

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    licensing@OpenSSL.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

#include <stdio.h>

#include <string.h>

#include <openssl/crypto.h>

#include <openssl/buffer.h>

#include <openssl/dso.h>

#include <openssl/engine.h>

#ifndef OPENSSL_NO_RSA

# include <openssl/rsa.h>

#endif

#ifndef OPENSSL_NO_DSA

# include <openssl/dsa.h>

#endif

#ifndef OPENSSL_NO_DH

# include <openssl/dh.h>

#endif

#include <openssl/bn.h>

#ifndef OPENSSL_NO_HW

# ifndef OPENSSL_NO_HW_ATALLA

#  ifdef FLAT_INC

#   include "atalla.h"

#  else

#   include "vendor_defns/atalla.h"

#  endif

#  define ATALLA_LIB_NAME "atalla engine"

#  include "e_atalla_err.c"

static int atalla_destroy(ENGINE *e);

static int atalla_init(ENGINE *e);

static int atalla_finish(ENGINE *e);

static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void));

/* BIGNUM stuff */

static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,

                          const BIGNUM *m, BN_CTX *ctx);

#  ifndef OPENSSL_NO_RSA

/* RSA stuff */

static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,

                              BN_CTX *ctx);

/* This function is aliased to mod_exp (with the mont stuff dropped). */

static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,

                               const BIGNUM *m, BN_CTX *ctx,

                               BN_MONT_CTX *m_ctx);

#  endif

#  ifndef OPENSSL_NO_DSA

/* DSA stuff */

static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,

                              BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,

                              BN_CTX *ctx, BN_MONT_CTX *in_mont);

static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,

                              const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,

                              BN_MONT_CTX *m_ctx);

#  endif

#  ifndef OPENSSL_NO_DH

/* DH stuff */

/* This function is alised to mod_exp (with the DH and mont dropped). */

static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,

                             const BIGNUM *a, const BIGNUM *p,

                             const BIGNUM *m, BN_CTX *ctx,

                             BN_MONT_CTX *m_ctx);

#  endif

/* The definitions for control commands specific to this engine */

#  define ATALLA_CMD_SO_PATH              ENGINE_CMD_BASE

static const ENGINE_CMD_DEFN atalla_cmd_defns[] = {

    {ATALLA_CMD_SO_PATH,

     "SO_PATH",

     "Specifies the path to the 'atasi' shared library",

     ENGINE_CMD_FLAG_STRING},

    {0, NULL, NULL, 0}

};

#  ifndef OPENSSL_NO_RSA

/* Our internal RSA_METHOD that we provide pointers to */

static RSA_METHOD atalla_rsa = {

    "Atalla RSA method",

    NULL,

    NULL,

    NULL,

    NULL,

    atalla_rsa_mod_exp,

    atalla_mod_exp_mont,

    NULL,

    NULL,

    0,

    NULL,

    NULL,

    NULL,

    NULL

};

#  endif

#  ifndef OPENSSL_NO_DSA

/* Our internal DSA_METHOD that we provide pointers to */

static DSA_METHOD atalla_dsa = {

    "Atalla DSA method",

    NULL,                       /* dsa_do_sign */

    NULL,                       /* dsa_sign_setup */

    NULL,                       /* dsa_do_verify */

    atalla_dsa_mod_exp,         /* dsa_mod_exp */

    atalla_mod_exp_dsa,         /* bn_mod_exp */

    NULL,                       /* init */

    NULL,                       /* finish */

    0,                          /* flags */

    NULL,                       /* app_data */

    NULL,                       /* dsa_paramgen */

    NULL                        /* dsa_keygen */

};

#  endif

#  ifndef OPENSSL_NO_DH

/* Our internal DH_METHOD that we provide pointers to */

static DH_METHOD atalla_dh = {

    "Atalla DH method",

    NULL,

    NULL,

    atalla_mod_exp_dh,

    NULL,

    NULL,

    0,

    NULL,

    NULL

};

#  endif

/* Constants used when creating the ENGINE */

static const char *engine_atalla_id = "atalla";

static const char *engine_atalla_name = "Atalla hardware engine support";

/*

 * This internal function is used by ENGINE_atalla() and possibly by the

 * "dynamic" ENGINE support too

 */

static int bind_helper(ENGINE *e)

{

#  ifndef OPENSSL_NO_RSA

    const RSA_METHOD *meth1;

#  endif

#  ifndef OPENSSL_NO_DSA

    const DSA_METHOD *meth2;

#  endif

#  ifndef OPENSSL_NO_DH

    const DH_METHOD *meth3;

#  endif

    if (!ENGINE_set_id(e, engine_atalla_id) ||

        !ENGINE_set_name(e, engine_atalla_name) ||

#  ifndef OPENSSL_NO_RSA

        !ENGINE_set_RSA(e, &atalla_rsa) ||

#  endif

#  ifndef OPENSSL_NO_DSA

        !ENGINE_set_DSA(e, &atalla_dsa) ||

#  endif

#  ifndef OPENSSL_NO_DH

        !ENGINE_set_DH(e, &atalla_dh) ||

#  endif

        !ENGINE_set_destroy_function(e, atalla_destroy) ||

        !ENGINE_set_init_function(e, atalla_init) ||

        !ENGINE_set_finish_function(e, atalla_finish) ||

        !ENGINE_set_ctrl_function(e, atalla_ctrl) ||

        !ENGINE_set_cmd_defns(e, atalla_cmd_defns))

        return 0;

#  ifndef OPENSSL_NO_RSA

    /*

     * We know that the "PKCS1_SSLeay()" functions hook properly to the

     * atalla-specific mod_exp and mod_exp_crt so we use those functions. NB:

     * We don't use ENGINE_openssl() or anything "more generic" because

     * something like the RSAref code may not hook properly, and if you own

     * one of these cards then you have the right to do RSA operations on it

     * anyway!

     */

    meth1 = RSA_PKCS1_SSLeay();

    atalla_rsa.rsa_pub_enc = meth1->rsa_pub_enc;

    atalla_rsa.rsa_pub_dec = meth1->rsa_pub_dec;

    atalla_rsa.rsa_priv_enc = meth1->rsa_priv_enc;

    atalla_rsa.rsa_priv_dec = meth1->rsa_priv_dec;

#  endif

#  ifndef OPENSSL_NO_DSA

    /*

     * Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits.

     */

    meth2 = DSA_OpenSSL();

    atalla_dsa.dsa_do_sign = meth2->dsa_do_sign;

    atalla_dsa.dsa_sign_setup = meth2->dsa_sign_setup;

    atalla_dsa.dsa_do_verify = meth2->dsa_do_verify;

#  endif

#  ifndef OPENSSL_NO_DH

    /* Much the same for Diffie-Hellman */

    meth3 = DH_OpenSSL();

    atalla_dh.generate_key = meth3->generate_key;

    atalla_dh.compute_key = meth3->compute_key;

#  endif

    /* Ensure the atalla error handling is set up */

    ERR_load_ATALLA_strings();

    return 1;

}

#  ifdef OPENSSL_NO_DYNAMIC_ENGINE

static ENGINE *engine_atalla(void)

{

    ENGINE *ret = ENGINE_new();

    if (!ret)

        return NULL;

    if (!bind_helper(ret)) {

        ENGINE_free(ret);

        return NULL;

    }

    return ret;

}

void ENGINE_load_atalla(void)

{

    /* Copied from eng_[openssl|dyn].c */

    ENGINE *toadd = engine_atalla();

    if (!toadd)

        return;

    ENGINE_add(toadd);

    ENGINE_free(toadd);

    ERR_clear_error();

}

#  endif

/*

 * This is a process-global DSO handle used for loading and unloading the

 * Atalla library. NB: This is only set (or unset) during an init() or

 * finish() call (reference counts permitting) and they're operating with

 * global locks, so this should be thread-safe implicitly.

 */

static DSO *atalla_dso = NULL;

/*

 * These are the function pointers that are (un)set when the library has

 * successfully (un)loaded.

 */

static tfnASI_GetHardwareConfig *p_Atalla_GetHardwareConfig = NULL;

static tfnASI_RSAPrivateKeyOpFn *p_Atalla_RSAPrivateKeyOpFn = NULL;

static tfnASI_GetPerformanceStatistics *p_Atalla_GetPerformanceStatistics =

    NULL;

/*

 * These are the static string constants for the DSO file name and the

 * function symbol names to bind to. Regrettably, the DSO name on *nix

 * appears to be "atasi.so" rather than something more consistent like

 * "libatasi.so". At the time of writing, I'm not sure what the file name on

 * win32 is but clearly native name translation is not possible (eg

 * libatasi.so on *nix, and atasi.dll on win32). For the purposes of testing,

 * I have created a symbollic link called "libatasi.so" so that we can use

 * native name-translation - a better solution will be needed.

 */

static const char *ATALLA_LIBNAME = NULL;

static const char *get_ATALLA_LIBNAME(void)

{

    if (ATALLA_LIBNAME)

        return ATALLA_LIBNAME;

    return "atasi";

}

static void free_ATALLA_LIBNAME(void)

{

    if (ATALLA_LIBNAME)

        OPENSSL_free((void *)ATALLA_LIBNAME);

    ATALLA_LIBNAME = NULL;

}

static long set_ATALLA_LIBNAME(const char *name)

{

    free_ATALLA_LIBNAME();

    return (((ATALLA_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0);

}

static const char *ATALLA_F1 = "ASI_GetHardwareConfig";

static const char *ATALLA_F2 = "ASI_RSAPrivateKeyOpFn";

static const char *ATALLA_F3 = "ASI_GetPerformanceStatistics";

/* Destructor (complements the "ENGINE_atalla()" constructor) */

static int atalla_destroy(ENGINE *e)

{

    free_ATALLA_LIBNAME();

    /*

     * Unload the atalla error strings so any error state including our

     * functs or reasons won't lead to a segfault (they simply get displayed

     * without corresponding string data because none will be found).

     */

    ERR_unload_ATALLA_strings();

    return 1;

}

/* (de)initialisation functions. */

static int atalla_init(ENGINE *e)

{

    tfnASI_GetHardwareConfig *p1;

    tfnASI_RSAPrivateKeyOpFn *p2;

    tfnASI_GetPerformanceStatistics *p3;

    /*

     * Not sure of the origin of this magic value, but Ben's code had it and

     * it seemed to have been working for a few people. :-)

     */

    unsigned int config_buf[1024];

    if (atalla_dso != NULL) {

        ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_ALREADY_LOADED);

        goto err;

    }

    /*

     * Attempt to load libatasi.so/atasi.dll/whatever. Needs to be changed

     * unfortunately because the Atalla drivers don't have standard library

     * names that can be platform-translated well.

     */

    /*

     * TODO: Work out how to actually map to the names the Atalla drivers

     * really use - for now a symbollic link needs to be created on the host

     * system from libatasi.so to atasi.so on unix variants.

     */

    atalla_dso = DSO_load(NULL, get_ATALLA_LIBNAME(), NULL, 0);

    if (atalla_dso == NULL) {

        ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_NOT_LOADED);

        goto err;

    }

    if (!

        (p1 =

         (tfnASI_GetHardwareConfig *) DSO_bind_func(atalla_dso, ATALLA_F1))

|| !(p2 = (tfnASI_RSAPrivateKeyOpFn *) DSO_bind_func(atalla_dso, ATALLA_F2))

|| !(p3 =

     (tfnASI_GetPerformanceStatistics *) DSO_bind_func(atalla_dso,

                                                       ATALLA_F3))) {

        ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_NOT_LOADED);

        goto err;

    }

    /* Copy the pointers */

    p_Atalla_GetHardwareConfig = p1;

    p_Atalla_RSAPrivateKeyOpFn = p2;

    p_Atalla_GetPerformanceStatistics = p3;

    /*

     * Perform a basic test to see if there's actually any unit running.

     */

    if (p1(0L, config_buf) != 0) {

        ATALLAerr(ATALLA_F_ATALLA_INIT, ATALLA_R_UNIT_FAILURE);

        goto err;

    }

    /* Everything's fine. */

    return 1;

 err:

    if (atalla_dso)

        DSO_free(atalla_dso);

    atalla_dso = NULL;

    p_Atalla_GetHardwareConfig = NULL;

    p_Atalla_RSAPrivateKeyOpFn = NULL;

    p_Atalla_GetPerformanceStatistics = NULL;

    return 0;

}

static int atalla_finish(ENGINE *e)

{

    free_ATALLA_LIBNAME();

    if (atalla_dso == NULL) {

        ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_NOT_LOADED);

        return 0;

    }

    if (!DSO_free(atalla_dso)) {

        ATALLAerr(ATALLA_F_ATALLA_FINISH, ATALLA_R_UNIT_FAILURE);

        return 0;

    }

    atalla_dso = NULL;

    p_Atalla_GetHardwareConfig = NULL;

    p_Atalla_RSAPrivateKeyOpFn = NULL;

    p_Atalla_GetPerformanceStatistics = NULL;

    return 1;

}

static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))

{

    int initialised = ((atalla_dso == NULL) ? 0 : 1);

    switch (cmd) {

    case ATALLA_CMD_SO_PATH:

        if (p == NULL) {

            ATALLAerr(ATALLA_F_ATALLA_CTRL, ERR_R_PASSED_NULL_PARAMETER);

            return 0;

        }

        if (initialised) {

            ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_ALREADY_LOADED);

            return 0;

        }

        return set_ATALLA_LIBNAME((const char *)p);

    default:

        break;

    }

    ATALLAerr(ATALLA_F_ATALLA_CTRL, ATALLA_R_CTRL_COMMAND_NOT_IMPLEMENTED);

    return 0;

}

static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,

                          const BIGNUM *m, BN_CTX *ctx)

{

    /*

     * I need somewhere to store temporary serialised values for use with the

     * Atalla API calls. A neat cheat - I'll use BIGNUMs from the BN_CTX but

     * access their arrays directly as byte arrays <grin>. This way I don't

     * have to clean anything up.

     */

    BIGNUM *modulus;

    BIGNUM *exponent;

    BIGNUM *argument;

    BIGNUM *result;

    RSAPrivateKey keydata;

    int to_return, numbytes;

    modulus = exponent = argument = result = NULL;

    to_return = 0;              /* expect failure */

    if (!atalla_dso) {

        ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_NOT_LOADED);

        goto err;

    }

    /* Prepare the params */

    BN_CTX_start(ctx);

    modulus = BN_CTX_get(ctx);

    exponent = BN_CTX_get(ctx);

    argument = BN_CTX_get(ctx);

    result = BN_CTX_get(ctx);

    if (!result) {

        ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_BN_CTX_FULL);

        goto err;

    }

    if (!bn_wexpand(modulus, m->top) || !bn_wexpand(exponent, m->top) ||

        !bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top)) {

        ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_BN_EXPAND_FAIL);

        goto err;

    }

    /* Prepare the key-data */

    memset(&keydata, 0, sizeof keydata);

    numbytes = BN_num_bytes(m);

    memset(exponent->d, 0, numbytes);

    memset(modulus->d, 0, numbytes);

    BN_bn2bin(p, (unsigned char *)exponent->d + numbytes - BN_num_bytes(p));

    BN_bn2bin(m, (unsigned char *)modulus->d + numbytes - BN_num_bytes(m));

    keydata.privateExponent.data = (unsigned char *)exponent->d;

    keydata.privateExponent.len = numbytes;

    keydata.modulus.data = (unsigned char *)modulus->d;

    keydata.modulus.len = numbytes;

    /* Prepare the argument */

    memset(argument->d, 0, numbytes);

    memset(result->d, 0, numbytes);

    BN_bn2bin(a, (unsigned char *)argument->d + numbytes - BN_num_bytes(a));

    /* Perform the operation */

    if (p_Atalla_RSAPrivateKeyOpFn(&keydata, (unsigned char *)result->d,

                                   (unsigned char *)argument->d,

                                   keydata.modulus.len) != 0) {

        ATALLAerr(ATALLA_F_ATALLA_MOD_EXP, ATALLA_R_REQUEST_FAILED);

        goto err;

    }

    /* Convert the response */

    BN_bin2bn((unsigned char *)result->d, numbytes, r);

    to_return = 1;

 err:

    BN_CTX_end(ctx);

    return to_return;

}

#  ifndef OPENSSL_NO_RSA

static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa,

                              BN_CTX *ctx)

{

    int to_return = 0;

    if (!atalla_dso) {

        ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP, ATALLA_R_NOT_LOADED);

        goto err;

    }

    if (!rsa->d || !rsa->n) {

        ATALLAerr(ATALLA_F_ATALLA_RSA_MOD_EXP,

                  ATALLA_R_MISSING_KEY_COMPONENTS);

        goto err;

    }

    to_return = atalla_mod_exp(r0, I, rsa->d, rsa->n, ctx);

 err:

    return to_return;

}

#  endif

#  ifndef OPENSSL_NO_DSA

/*

 * This code was liberated and adapted from the commented-out code in

 * dsa_ossl.c. Because of the unoptimised form of the Atalla acceleration (it

 * doesn't have a CRT form for RSA), this function means that an Atalla

 * system running with a DSA server certificate can handshake around 5 or 6

 * times faster/more than an equivalent system running with RSA. Just check

 * out the "signs" statistics from the RSA and DSA parts of "openssl speed

 * -engine atalla dsa1024 rsa1024".

 */

static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,

                              BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,

                              BN_CTX *ctx, BN_MONT_CTX *in_mont)

{

    BIGNUM t;

    int to_return = 0;

    BN_init(&t);

    /* let rr = a1 ^ p1 mod m */

    if (!atalla_mod_exp(rr, a1, p1, m, ctx))

        goto end;

    /* let t = a2 ^ p2 mod m */

    if (!atalla_mod_exp(&t, a2, p2, m, ctx))

        goto end;

    /* let rr = rr * t mod m */

    if (!BN_mod_mul(rr, rr, &t, m, ctx))

        goto end;

    to_return = 1;

 end:

    BN_free(&t);

    return to_return;

}

static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,

                              const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,

                              BN_MONT_CTX *m_ctx)

{

    return atalla_mod_exp(r, a, p, m, ctx);

}

#  endif

#  ifndef OPENSSL_NO_RSA

/* This function is aliased to mod_exp (with the mont stuff dropped). */

static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,

                               const BIGNUM *m, BN_CTX *ctx,

                               BN_MONT_CTX *m_ctx)

{

    return atalla_mod_exp(r, a, p, m, ctx);

}

#  endif

#  ifndef OPENSSL_NO_DH

/* This function is aliased to mod_exp (with the dh and mont dropped). */

static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,

                             const BIGNUM *a, const BIGNUM *p,

                             const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)

{

    return atalla_mod_exp(r, a, p, m, ctx);

}

#  endif

/*

 * This stuff is needed if this ENGINE is being compiled into a

 * self-contained shared-library.

 */

#  ifndef OPENSSL_NO_DYNAMIC_ENGINE

static int bind_fn(ENGINE *e, const char *id)

{

    if (id && (strcmp(id, engine_atalla_id) != 0))

        return 0;

    if (!bind_helper(e))

        return 0;

    return 1;

}

IMPLEMENT_DYNAMIC_CHECK_FN()

    IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)

#  endif                        /* OPENSSL_NO_DYNAMIC_ENGINE */

# endif                         /* !OPENSSL_NO_HW_ATALLA */

#endif                          /* !OPENSSL_NO_HW */