--- /dev/null
+/* 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 */
projects / cassiopeia.git / blobdiff