/* 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 #include #include "cryptlib.h" #include #include #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 #if 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 #if 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; } 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(); } /* 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 = "ubsec"; 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) { 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, 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) { 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; } UBSEC_LIBNAME = (const char *)p; return 1; 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; } memset(r->d, 0, BN_num_bytes(m)); 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 #if 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 #if 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 */