diff options
Diffstat (limited to 'crypto/engine/hw_ubsec.c')
| -rw-r--r-- | crypto/engine/hw_ubsec.c | 1060 |
1 files changed, 1060 insertions, 0 deletions
diff --git a/crypto/engine/hw_ubsec.c b/crypto/engine/hw_ubsec.c new file mode 100644 index 000000000000..5234a08a07bd --- /dev/null +++ b/crypto/engine/hw_ubsec.c @@ -0,0 +1,1060 @@ +/* crypto/engine/hw_ubsec.c */ +/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL + * project 2000. + * + * Cloned shamelessly by Joe Tardo. + */ +/* ==================================================================== + * 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 <openssl/crypto.h> +#include "cryptlib.h" +#include <openssl/dso.h> +#include <openssl/engine.h> + +#ifndef OPENSSL_NO_HW +#ifndef OPENSSL_NO_HW_UBSEC + +#ifdef FLAT_INC +#include "hw_ubsec.h" +#else +#include "vendor_defns/hw_ubsec.h" +#endif + +#define UBSEC_LIB_NAME "ubsec engine" +#include "hw_ubsec_err.c" + +#define FAIL_TO_SOFTWARE -15 + +static int ubsec_destroy(ENGINE *e); +static int ubsec_init(ENGINE *e); +static int ubsec_finish(ENGINE *e); +static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()); +static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx); +static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *q, const BIGNUM *dp, + const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx); +#ifndef OPENSSL_NO_RSA +static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa); +#endif +static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); +#ifndef OPENSSL_NO_DSA +#ifdef NOT_USED +static int ubsec_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 ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, + const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *m_ctx); +#endif +static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa); +static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len, + DSA_SIG *sig, DSA *dsa); +#endif +#ifndef OPENSSL_NO_DH +static int ubsec_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); +static int ubsec_dh_compute_key(unsigned char *key,const BIGNUM *pub_key,DH *dh); +static int ubsec_dh_generate_key(DH *dh); +#endif + +#ifdef NOT_USED +static int ubsec_rand_bytes(unsigned char *buf, int num); +static int ubsec_rand_status(void); +#endif + +#define UBSEC_CMD_SO_PATH ENGINE_CMD_BASE +static const ENGINE_CMD_DEFN ubsec_cmd_defns[] = { + {UBSEC_CMD_SO_PATH, + "SO_PATH", + "Specifies the path to the 'ubsec' 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 ubsec_rsa = + { + "UBSEC RSA method", + NULL, + NULL, + NULL, + NULL, + ubsec_rsa_mod_exp, + ubsec_mod_exp_mont, + NULL, + NULL, + 0, + NULL, + NULL, + NULL + }; +#endif + +#ifndef OPENSSL_NO_DSA +/* Our internal DSA_METHOD that we provide pointers to */ +static DSA_METHOD ubsec_dsa = + { + "UBSEC DSA method", + ubsec_dsa_do_sign, /* dsa_do_sign */ + NULL, /* dsa_sign_setup */ + ubsec_dsa_verify, /* dsa_do_verify */ + NULL, /* ubsec_dsa_mod_exp */ /* dsa_mod_exp */ + NULL, /* ubsec_mod_exp_dsa */ /* bn_mod_exp */ + NULL, /* init */ + NULL, /* finish */ + 0, /* flags */ + NULL /* app_data */ + }; +#endif + +#ifndef OPENSSL_NO_DH +/* Our internal DH_METHOD that we provide pointers to */ +static DH_METHOD ubsec_dh = + { + "UBSEC DH method", + ubsec_dh_generate_key, + ubsec_dh_compute_key, + ubsec_mod_exp_dh, + NULL, + NULL, + 0, + NULL + }; +#endif + +/* Constants used when creating the ENGINE */ +static const char *engine_ubsec_id = "ubsec"; +static const char *engine_ubsec_name = "UBSEC hardware engine support"; + +/* This internal function is used by ENGINE_ubsec() 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_DH +#ifndef HAVE_UBSEC_DH + const DH_METHOD *meth3; +#endif /* HAVE_UBSEC_DH */ +#endif + if(!ENGINE_set_id(e, engine_ubsec_id) || + !ENGINE_set_name(e, engine_ubsec_name) || +#ifndef OPENSSL_NO_RSA + !ENGINE_set_RSA(e, &ubsec_rsa) || +#endif +#ifndef OPENSSL_NO_DSA + !ENGINE_set_DSA(e, &ubsec_dsa) || +#endif +#ifndef OPENSSL_NO_DH + !ENGINE_set_DH(e, &ubsec_dh) || +#endif + !ENGINE_set_destroy_function(e, ubsec_destroy) || + !ENGINE_set_init_function(e, ubsec_init) || + !ENGINE_set_finish_function(e, ubsec_finish) || + !ENGINE_set_ctrl_function(e, ubsec_ctrl) || + !ENGINE_set_cmd_defns(e, ubsec_cmd_defns)) + return 0; + +#ifndef OPENSSL_NO_RSA + /* We know that the "PKCS1_SSLeay()" functions hook properly + * to the Broadcom-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(); + ubsec_rsa.rsa_pub_enc = meth1->rsa_pub_enc; + ubsec_rsa.rsa_pub_dec = meth1->rsa_pub_dec; + ubsec_rsa.rsa_priv_enc = meth1->rsa_priv_enc; + ubsec_rsa.rsa_priv_dec = meth1->rsa_priv_dec; +#endif + +#ifndef OPENSSL_NO_DH +#ifndef HAVE_UBSEC_DH + /* Much the same for Diffie-Hellman */ + meth3 = DH_OpenSSL(); + ubsec_dh.generate_key = meth3->generate_key; + ubsec_dh.compute_key = meth3->compute_key; +#endif /* HAVE_UBSEC_DH */ +#endif + + /* Ensure the ubsec error handling is set up */ + ERR_load_UBSEC_strings(); + return 1; + } + +#ifndef ENGINE_DYNAMIC_SUPPORT +static ENGINE *engine_ubsec(void) + { + ENGINE *ret = ENGINE_new(); + if(!ret) + return NULL; + if(!bind_helper(ret)) + { + ENGINE_free(ret); + return NULL; + } + return ret; + } + +void ENGINE_load_ubsec(void) + { + /* Copied from eng_[openssl|dyn].c */ + ENGINE *toadd = engine_ubsec(); + 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 UBSEC 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 *ubsec_dso = NULL; + +/* These are the function pointers that are (un)set when the library has + * successfully (un)loaded. */ + +static t_UBSEC_ubsec_bytes_to_bits *p_UBSEC_ubsec_bytes_to_bits = NULL; +static t_UBSEC_ubsec_bits_to_bytes *p_UBSEC_ubsec_bits_to_bytes = NULL; +static t_UBSEC_ubsec_open *p_UBSEC_ubsec_open = NULL; +static t_UBSEC_ubsec_close *p_UBSEC_ubsec_close = NULL; +#ifndef OPENSSL_NO_DH +static t_UBSEC_diffie_hellman_generate_ioctl + *p_UBSEC_diffie_hellman_generate_ioctl = NULL; +static t_UBSEC_diffie_hellman_agree_ioctl *p_UBSEC_diffie_hellman_agree_ioctl = NULL; +#endif +/* #ifndef OPENSSL_NO_RSA */ +static t_UBSEC_rsa_mod_exp_ioctl *p_UBSEC_rsa_mod_exp_ioctl = NULL; +static t_UBSEC_rsa_mod_exp_crt_ioctl *p_UBSEC_rsa_mod_exp_crt_ioctl = NULL; +/* #endif */ +#ifndef OPENSSL_NO_DSA +static t_UBSEC_dsa_sign_ioctl *p_UBSEC_dsa_sign_ioctl = NULL; +static t_UBSEC_dsa_verify_ioctl *p_UBSEC_dsa_verify_ioctl = NULL; +#endif +static t_UBSEC_math_accelerate_ioctl *p_UBSEC_math_accelerate_ioctl = NULL; +static t_UBSEC_rng_ioctl *p_UBSEC_rng_ioctl = NULL; +static t_UBSEC_max_key_len_ioctl *p_UBSEC_max_key_len_ioctl = NULL; + +static int max_key_len = 1024; /* ??? */ + +/* + * These are the static string constants for the DSO file name and the function + * symbol names to bind to. + */ + +static const char *UBSEC_LIBNAME = NULL; +static const char *get_UBSEC_LIBNAME(void) + { + if(UBSEC_LIBNAME) + return UBSEC_LIBNAME; + return "ubsec"; + } +static void free_UBSEC_LIBNAME(void) + { + if(UBSEC_LIBNAME) + OPENSSL_free((void*)UBSEC_LIBNAME); + UBSEC_LIBNAME = NULL; + } +static long set_UBSEC_LIBNAME(const char *name) + { + free_UBSEC_LIBNAME(); + return (((UBSEC_LIBNAME = BUF_strdup(name)) != NULL) ? 1 : 0); + } +static const char *UBSEC_F1 = "ubsec_bytes_to_bits"; +static const char *UBSEC_F2 = "ubsec_bits_to_bytes"; +static const char *UBSEC_F3 = "ubsec_open"; +static const char *UBSEC_F4 = "ubsec_close"; +#ifndef OPENSSL_NO_DH +static const char *UBSEC_F5 = "diffie_hellman_generate_ioctl"; +static const char *UBSEC_F6 = "diffie_hellman_agree_ioctl"; +#endif +/* #ifndef OPENSSL_NO_RSA */ +static const char *UBSEC_F7 = "rsa_mod_exp_ioctl"; +static const char *UBSEC_F8 = "rsa_mod_exp_crt_ioctl"; +/* #endif */ +#ifndef OPENSSL_NO_DSA +static const char *UBSEC_F9 = "dsa_sign_ioctl"; +static const char *UBSEC_F10 = "dsa_verify_ioctl"; +#endif +static const char *UBSEC_F11 = "math_accelerate_ioctl"; +static const char *UBSEC_F12 = "rng_ioctl"; +static const char *UBSEC_F13 = "ubsec_max_key_len_ioctl"; + +/* Destructor (complements the "ENGINE_ubsec()" constructor) */ +static int ubsec_destroy(ENGINE *e) + { + free_UBSEC_LIBNAME(); + ERR_unload_UBSEC_strings(); + return 1; + } + +/* (de)initialisation functions. */ +static int ubsec_init(ENGINE *e) + { + t_UBSEC_ubsec_bytes_to_bits *p1; + t_UBSEC_ubsec_bits_to_bytes *p2; + t_UBSEC_ubsec_open *p3; + t_UBSEC_ubsec_close *p4; +#ifndef OPENSSL_NO_DH + t_UBSEC_diffie_hellman_generate_ioctl *p5; + t_UBSEC_diffie_hellman_agree_ioctl *p6; +#endif +/* #ifndef OPENSSL_NO_RSA */ + t_UBSEC_rsa_mod_exp_ioctl *p7; + t_UBSEC_rsa_mod_exp_crt_ioctl *p8; +/* #endif */ +#ifndef OPENSSL_NO_DSA + t_UBSEC_dsa_sign_ioctl *p9; + t_UBSEC_dsa_verify_ioctl *p10; +#endif + t_UBSEC_math_accelerate_ioctl *p11; + t_UBSEC_rng_ioctl *p12; + t_UBSEC_max_key_len_ioctl *p13; + int fd = 0; + + if(ubsec_dso != NULL) + { + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_ALREADY_LOADED); + goto err; + } + /* + * Attempt to load libubsec.so/ubsec.dll/whatever. + */ + ubsec_dso = DSO_load(NULL, get_UBSEC_LIBNAME(), NULL, 0); + if(ubsec_dso == NULL) + { + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE); + goto err; + } + + if ( + !(p1 = (t_UBSEC_ubsec_bytes_to_bits *) DSO_bind_func(ubsec_dso, UBSEC_F1)) || + !(p2 = (t_UBSEC_ubsec_bits_to_bytes *) DSO_bind_func(ubsec_dso, UBSEC_F2)) || + !(p3 = (t_UBSEC_ubsec_open *) DSO_bind_func(ubsec_dso, UBSEC_F3)) || + !(p4 = (t_UBSEC_ubsec_close *) DSO_bind_func(ubsec_dso, UBSEC_F4)) || +#ifndef OPENSSL_NO_DH + !(p5 = (t_UBSEC_diffie_hellman_generate_ioctl *) + DSO_bind_func(ubsec_dso, UBSEC_F5)) || + !(p6 = (t_UBSEC_diffie_hellman_agree_ioctl *) + DSO_bind_func(ubsec_dso, UBSEC_F6)) || +#endif +/* #ifndef OPENSSL_NO_RSA */ + !(p7 = (t_UBSEC_rsa_mod_exp_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F7)) || + !(p8 = (t_UBSEC_rsa_mod_exp_crt_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F8)) || +/* #endif */ +#ifndef OPENSSL_NO_DSA + !(p9 = (t_UBSEC_dsa_sign_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F9)) || + !(p10 = (t_UBSEC_dsa_verify_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F10)) || +#endif + !(p11 = (t_UBSEC_math_accelerate_ioctl *) + DSO_bind_func(ubsec_dso, UBSEC_F11)) || + !(p12 = (t_UBSEC_rng_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F12)) || + !(p13 = (t_UBSEC_max_key_len_ioctl *) DSO_bind_func(ubsec_dso, UBSEC_F13))) + { + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_DSO_FAILURE); + goto err; + } + + /* Copy the pointers */ + p_UBSEC_ubsec_bytes_to_bits = p1; + p_UBSEC_ubsec_bits_to_bytes = p2; + p_UBSEC_ubsec_open = p3; + p_UBSEC_ubsec_close = p4; +#ifndef OPENSSL_NO_DH + p_UBSEC_diffie_hellman_generate_ioctl = p5; + p_UBSEC_diffie_hellman_agree_ioctl = p6; +#endif +#ifndef OPENSSL_NO_RSA + p_UBSEC_rsa_mod_exp_ioctl = p7; + p_UBSEC_rsa_mod_exp_crt_ioctl = p8; +#endif +#ifndef OPENSSL_NO_DSA + p_UBSEC_dsa_sign_ioctl = p9; + p_UBSEC_dsa_verify_ioctl = p10; +#endif + p_UBSEC_math_accelerate_ioctl = p11; + p_UBSEC_rng_ioctl = p12; + p_UBSEC_max_key_len_ioctl = p13; + + /* Perform an open to see if there's actually any unit running. */ + if (((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) > 0) && (p_UBSEC_max_key_len_ioctl(fd, &max_key_len) == 0)) + { + p_UBSEC_ubsec_close(fd); + return 1; + } + else + { + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + } + +err: + if(ubsec_dso) + DSO_free(ubsec_dso); + p_UBSEC_ubsec_bytes_to_bits = NULL; + p_UBSEC_ubsec_bits_to_bytes = NULL; + p_UBSEC_ubsec_open = NULL; + p_UBSEC_ubsec_close = NULL; +#ifndef OPENSSL_NO_DH + p_UBSEC_diffie_hellman_generate_ioctl = NULL; + p_UBSEC_diffie_hellman_agree_ioctl = NULL; +#endif +#ifndef OPENSSL_NO_RSA + p_UBSEC_rsa_mod_exp_ioctl = NULL; + p_UBSEC_rsa_mod_exp_crt_ioctl = NULL; +#endif +#ifndef OPENSSL_NO_DSA + p_UBSEC_dsa_sign_ioctl = NULL; + p_UBSEC_dsa_verify_ioctl = NULL; +#endif + p_UBSEC_math_accelerate_ioctl = NULL; + p_UBSEC_rng_ioctl = NULL; + p_UBSEC_max_key_len_ioctl = NULL; + + return 0; + } + +static int ubsec_finish(ENGINE *e) + { + free_UBSEC_LIBNAME(); + if(ubsec_dso == NULL) + { + UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_NOT_LOADED); + return 0; + } + if(!DSO_free(ubsec_dso)) + { + UBSECerr(UBSEC_F_UBSEC_FINISH, UBSEC_R_DSO_FAILURE); + return 0; + } + ubsec_dso = NULL; + p_UBSEC_ubsec_bytes_to_bits = NULL; + p_UBSEC_ubsec_bits_to_bytes = NULL; + p_UBSEC_ubsec_open = NULL; + p_UBSEC_ubsec_close = NULL; +#ifndef OPENSSL_NO_DH + p_UBSEC_diffie_hellman_generate_ioctl = NULL; + p_UBSEC_diffie_hellman_agree_ioctl = NULL; +#endif +#ifndef OPENSSL_NO_RSA + p_UBSEC_rsa_mod_exp_ioctl = NULL; + p_UBSEC_rsa_mod_exp_crt_ioctl = NULL; +#endif +#ifndef OPENSSL_NO_DSA + p_UBSEC_dsa_sign_ioctl = NULL; + p_UBSEC_dsa_verify_ioctl = NULL; +#endif + p_UBSEC_math_accelerate_ioctl = NULL; + p_UBSEC_rng_ioctl = NULL; + p_UBSEC_max_key_len_ioctl = NULL; + return 1; + } + +static int ubsec_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()) + { + int initialised = ((ubsec_dso == NULL) ? 0 : 1); + switch(cmd) + { + case UBSEC_CMD_SO_PATH: + if(p == NULL) + { + UBSECerr(UBSEC_F_UBSEC_CTRL,ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + if(initialised) + { + UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_ALREADY_LOADED); + return 0; + } + return set_UBSEC_LIBNAME((const char *)p); + default: + break; + } + UBSECerr(UBSEC_F_UBSEC_CTRL,UBSEC_R_CTRL_COMMAND_NOT_IMPLEMENTED); + return 0; + } + +static int ubsec_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx) + { + int y_len = 0; + int fd; + + if(ubsec_dso == NULL) + { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_NOT_LOADED); + return 0; + } + + /* Check if hardware can't handle this argument. */ + y_len = BN_num_bits(m); + if (y_len > max_key_len) { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL); + return BN_mod_exp(r, a, p, m, ctx); + } + + if(!bn_wexpand(r, m->top)) + { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_BN_EXPAND_FAIL); + return 0; + } + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) { + fd = 0; + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + return BN_mod_exp(r, a, p, m, ctx); + } + + if (p_UBSEC_rsa_mod_exp_ioctl(fd, (unsigned char *)a->d, BN_num_bits(a), + (unsigned char *)m->d, BN_num_bits(m), (unsigned char *)p->d, + BN_num_bits(p), (unsigned char *)r->d, &y_len) != 0) + { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + + return BN_mod_exp(r, a, p, m, ctx); + } + + p_UBSEC_ubsec_close(fd); + + r->top = (BN_num_bits(m)+BN_BITS2-1)/BN_BITS2; + return 1; + } + +#ifndef OPENSSL_NO_RSA +static int ubsec_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa) + { + BN_CTX *ctx; + int to_return = 0; + + if((ctx = BN_CTX_new()) == NULL) + goto err; + + if(!rsa->p || !rsa->q || !rsa->dmp1 || !rsa->dmq1 || !rsa->iqmp) + { + UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP, UBSEC_R_MISSING_KEY_COMPONENTS); + goto err; + } + + to_return = ubsec_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1, + rsa->dmq1, rsa->iqmp, ctx); + if (to_return == FAIL_TO_SOFTWARE) + { + /* + * Do in software as hardware failed. + */ + const RSA_METHOD *meth = RSA_PKCS1_SSLeay(); + to_return = (*meth->rsa_mod_exp)(r0, I, rsa); + } +err: + if(ctx) + BN_CTX_free(ctx); + return to_return; + } +#endif + +static int ubsec_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *q, const BIGNUM *dp, + const BIGNUM *dq, const BIGNUM *qinv, BN_CTX *ctx) + { + int y_len, + m_len, + fd; + + m_len = BN_num_bytes(p) + BN_num_bytes(q) + 1; + y_len = BN_num_bits(p) + BN_num_bits(q); + + /* Check if hardware can't handle this argument. */ + if (y_len > max_key_len) { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_SIZE_TOO_LARGE_OR_TOO_SMALL); + return FAIL_TO_SOFTWARE; + } + + if (!bn_wexpand(r, p->top + q->top + 1)) { + UBSECerr(UBSEC_F_UBSEC_RSA_MOD_EXP_CRT, UBSEC_R_BN_EXPAND_FAIL); + return 0; + } + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) { + fd = 0; + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + return FAIL_TO_SOFTWARE; + } + + if (p_UBSEC_rsa_mod_exp_crt_ioctl(fd, + (unsigned char *)a->d, BN_num_bits(a), + (unsigned char *)qinv->d, BN_num_bits(qinv), + (unsigned char *)dp->d, BN_num_bits(dp), + (unsigned char *)p->d, BN_num_bits(p), + (unsigned char *)dq->d, BN_num_bits(dq), + (unsigned char *)q->d, BN_num_bits(q), + (unsigned char *)r->d, &y_len) != 0) { + UBSECerr(UBSEC_F_UBSEC_MOD_EXP, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + return FAIL_TO_SOFTWARE; + } + + p_UBSEC_ubsec_close(fd); + + r->top = (BN_num_bits(p) + BN_num_bits(q) + BN_BITS2 - 1)/BN_BITS2; + return 1; +} + +#ifndef OPENSSL_NO_DSA +#ifdef NOT_USED +static int ubsec_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 (!ubsec_mod_exp(rr,a1,p1,m,ctx)) goto end; + /* let t = a2 ^ p2 mod m */ + if (!ubsec_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 ubsec_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, + const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *m_ctx) + { + return ubsec_mod_exp(r, a, p, m, ctx); + } +#endif +#endif + +/* + * This function is aliased to mod_exp (with the mont stuff dropped). + */ +static int ubsec_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) + { + int ret = 0; + +#ifndef OPENSSL_NO_RSA + /* Do in software if the key is too large for the hardware. */ + if (BN_num_bits(m) > max_key_len) + { + const RSA_METHOD *meth = RSA_PKCS1_SSLeay(); + ret = (*meth->bn_mod_exp)(r, a, p, m, ctx, m_ctx); + } + else +#endif + { + ret = ubsec_mod_exp(r, a, p, m, ctx); + } + + return ret; + } + +#ifndef OPENSSL_NO_DH +/* This function is aliased to mod_exp (with the dh and mont dropped). */ +static int ubsec_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 ubsec_mod_exp(r, a, p, m, ctx); + } +#endif + +#ifndef OPENSSL_NO_DSA +static DSA_SIG *ubsec_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa) + { + DSA_SIG *to_return = NULL; + int s_len = 160, r_len = 160, d_len, fd; + BIGNUM m, *r=NULL, *s=NULL; + + BN_init(&m); + + s = BN_new(); + r = BN_new(); + if ((s == NULL) || (r==NULL)) + goto err; + + d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dlen); + + if(!bn_wexpand(r, (160+BN_BITS2-1)/BN_BITS2) || + (!bn_wexpand(s, (160+BN_BITS2-1)/BN_BITS2))) { + UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL); + goto err; + } + + if (BN_bin2bn(dgst,dlen,&m) == NULL) { + UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL); + goto err; + } + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) { + const DSA_METHOD *meth; + fd = 0; + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + meth = DSA_OpenSSL(); + to_return = meth->dsa_do_sign(dgst, dlen, dsa); + goto err; + } + + if (p_UBSEC_dsa_sign_ioctl(fd, 0, /* compute hash before signing */ + (unsigned char *)dgst, d_len, + NULL, 0, /* compute random value */ + (unsigned char *)dsa->p->d, BN_num_bits(dsa->p), + (unsigned char *)dsa->q->d, BN_num_bits(dsa->q), + (unsigned char *)dsa->g->d, BN_num_bits(dsa->g), + (unsigned char *)dsa->priv_key->d, BN_num_bits(dsa->priv_key), + (unsigned char *)r->d, &r_len, + (unsigned char *)s->d, &s_len ) != 0) { + const DSA_METHOD *meth; + + UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + meth = DSA_OpenSSL(); + to_return = meth->dsa_do_sign(dgst, dlen, dsa); + + goto err; + } + + p_UBSEC_ubsec_close(fd); + + r->top = (160+BN_BITS2-1)/BN_BITS2; + s->top = (160+BN_BITS2-1)/BN_BITS2; + + to_return = DSA_SIG_new(); + if(to_return == NULL) { + UBSECerr(UBSEC_F_UBSEC_DSA_SIGN, UBSEC_R_BN_EXPAND_FAIL); + goto err; + } + + to_return->r = r; + to_return->s = s; + +err: + if (!to_return) { + if (r) BN_free(r); + if (s) BN_free(s); + } + BN_clear_free(&m); + return to_return; +} + +static int ubsec_dsa_verify(const unsigned char *dgst, int dgst_len, + DSA_SIG *sig, DSA *dsa) + { + int v_len, d_len; + int to_return = 0; + int fd; + BIGNUM v; + + BN_init(&v); + + if(!bn_wexpand(&v, dsa->p->top)) { + UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY ,UBSEC_R_BN_EXPAND_FAIL); + goto err; + } + + v_len = BN_num_bits(dsa->p); + + d_len = p_UBSEC_ubsec_bytes_to_bits((unsigned char *)dgst, dgst_len); + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) { + const DSA_METHOD *meth; + fd = 0; + UBSECerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + meth = DSA_OpenSSL(); + to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa); + goto err; + } + + if (p_UBSEC_dsa_verify_ioctl(fd, 0, /* compute hash before signing */ + (unsigned char *)dgst, d_len, + (unsigned char *)dsa->p->d, BN_num_bits(dsa->p), + (unsigned char *)dsa->q->d, BN_num_bits(dsa->q), + (unsigned char *)dsa->g->d, BN_num_bits(dsa->g), + (unsigned char *)dsa->pub_key->d, BN_num_bits(dsa->pub_key), + (unsigned char *)sig->r->d, BN_num_bits(sig->r), + (unsigned char *)sig->s->d, BN_num_bits(sig->s), + (unsigned char *)v.d, &v_len) != 0) { + const DSA_METHOD *meth; + UBSECerr(UBSEC_F_UBSEC_DSA_VERIFY , UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + + meth = DSA_OpenSSL(); + to_return = meth->dsa_do_verify(dgst, dgst_len, sig, dsa); + + goto err; + } + + p_UBSEC_ubsec_close(fd); + + to_return = 1; +err: + BN_clear_free(&v); + return to_return; + } +#endif + +#ifndef OPENSSL_NO_DH +static int ubsec_dh_compute_key (unsigned char *key,const BIGNUM *pub_key,DH *dh) + { + int ret = -1, + k_len, + fd; + + k_len = BN_num_bits(dh->p); + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) + { + const DH_METHOD *meth; + ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + meth = DH_OpenSSL(); + ret = meth->compute_key(key, pub_key, dh); + goto err; + } + + if (p_UBSEC_diffie_hellman_agree_ioctl(fd, + (unsigned char *)dh->priv_key->d, BN_num_bits(dh->priv_key), + (unsigned char *)pub_key->d, BN_num_bits(pub_key), + (unsigned char *)dh->p->d, BN_num_bits(dh->p), + key, &k_len) != 0) + { + /* Hardware's a no go, failover to software */ + const DH_METHOD *meth; + ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + + meth = DH_OpenSSL(); + ret = meth->compute_key(key, pub_key, dh); + + goto err; + } + + p_UBSEC_ubsec_close(fd); + + ret = p_UBSEC_ubsec_bits_to_bytes(k_len); +err: + return ret; + } + +static int ubsec_dh_generate_key (DH *dh) + { + int ret = 0, + random_bits = 0, + pub_key_len = 0, + priv_key_len = 0, + fd; + BIGNUM *pub_key = NULL; + BIGNUM *priv_key = NULL; + + /* + * How many bits should Random x be? dh_key.c + * sets the range from 0 to num_bits(modulus) ??? + */ + + if (dh->priv_key == NULL) + { + priv_key = BN_new(); + if (priv_key == NULL) goto err; + priv_key_len = BN_num_bits(dh->p); + bn_wexpand(priv_key, dh->p->top); + do + if (!BN_rand_range(priv_key, dh->p)) goto err; + while (BN_is_zero(priv_key)); + random_bits = BN_num_bits(priv_key); + } + else + { + priv_key = dh->priv_key; + } + + if (dh->pub_key == NULL) + { + pub_key = BN_new(); + pub_key_len = BN_num_bits(dh->p); + bn_wexpand(pub_key, dh->p->top); + if(pub_key == NULL) goto err; + } + else + { + pub_key = dh->pub_key; + } + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) + { + const DH_METHOD *meth; + ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + meth = DH_OpenSSL(); + ret = meth->generate_key(dh); + goto err; + } + + if (p_UBSEC_diffie_hellman_generate_ioctl(fd, + (unsigned char *)priv_key->d, &priv_key_len, + (unsigned char *)pub_key->d, &pub_key_len, + (unsigned char *)dh->g->d, BN_num_bits(dh->g), + (unsigned char *)dh->p->d, BN_num_bits(dh->p), + 0, 0, random_bits) != 0) + { + /* Hardware's a no go, failover to software */ + const DH_METHOD *meth; + + ENGINEerr(UBSEC_F_UBSEC_DH_COMPUTE_KEY, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + + meth = DH_OpenSSL(); + ret = meth->generate_key(dh); + + goto err; + } + + p_UBSEC_ubsec_close(fd); + + dh->pub_key = pub_key; + dh->pub_key->top = (pub_key_len + BN_BITS2-1) / BN_BITS2; + dh->priv_key = priv_key; + dh->priv_key->top = (priv_key_len + BN_BITS2-1) / BN_BITS2; + + ret = 1; +err: + return ret; + } +#endif + +#ifdef NOT_USED +static int ubsec_rand_bytes(unsigned char * buf, + int num) + { + int ret = 0, + fd; + + if ((fd = p_UBSEC_ubsec_open(UBSEC_KEY_DEVICE_NAME)) <= 0) + { + const RAND_METHOD *meth; + ENGINEerr(UBSEC_F_UBSEC_INIT, UBSEC_R_UNIT_FAILURE); + num = p_UBSEC_ubsec_bits_to_bytes(num); + meth = RAND_SSLeay(); + meth->seed(buf, num); + ret = meth->bytes(buf, num); + goto err; + } + + num *= 8; /* bytes to bits */ + + if (p_UBSEC_rng_ioctl(fd, + UBSEC_RNG_DIRECT, + buf, + &num) != 0) + { + /* Hardware's a no go, failover to software */ + const RAND_METHOD *meth; + + ENGINEerr(UBSEC_F_UBSEC_RNG_BYTES, UBSEC_R_REQUEST_FAILED); + p_UBSEC_ubsec_close(fd); + + num = p_UBSEC_ubsec_bits_to_bytes(num); + meth = RAND_SSLeay(); + meth->seed(buf, num); + ret = meth->bytes(buf, num); + + goto err; + } + + p_UBSEC_ubsec_close(fd); + + ret = 1; +err: + return(ret); + } + + +static int ubsec_rand_status(void) + { + return 0; + } +#endif + +/* This stuff is needed if this ENGINE is being compiled into a self-contained + * shared-library. */ +#ifdef ENGINE_DYNAMIC_SUPPORT +static int bind_fn(ENGINE *e, const char *id) + { + if(id && (strcmp(id, engine_ubsec_id) != 0)) + return 0; + if(!bind_helper(e)) + return 0; + return 1; + } +IMPLEMENT_DYNAMIC_CHECK_FN() +IMPLEMENT_DYNAMIC_BIND_FN(bind_fn) +#endif /* ENGINE_DYNAMIC_SUPPORT */ + +#endif /* !OPENSSL_NO_HW_UBSEC */ +#endif /* !OPENSSL_NO_HW */ |