| /*- |
| * Written by Corinne Dive-Reclus(cdive@baltimore.com) |
| * |
| * |
| * 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/)" |
| * |
| * Written by Corinne Dive-Reclus(cdive@baltimore.com) |
| * |
| * Copyright@2001 Baltimore Technologies Ltd. |
| * All right Reserved. |
| * * |
| * THIS FILE IS PROVIDED BY BALTIMORE TECHNOLOGIES ``AS IS'' AND * |
| * ANY EXPRESS 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 BALTIMORE TECHNOLOGIES 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. * |
| ====================================================================*/ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <openssl/crypto.h> |
| #include <openssl/pem.h> |
| #include <openssl/dso.h> |
| #include <openssl/engine.h> |
| #include <openssl/rand.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_SUREWARE |
| |
| # ifdef FLAT_INC |
| # include "sureware.h" |
| # else |
| # include "vendor_defns/sureware.h" |
| # endif |
| |
| # define SUREWARE_LIB_NAME "sureware engine" |
| # include "e_sureware_err.c" |
| |
| static int surewarehk_ctrl(ENGINE *e, int cmd, long i, void *p, |
| void (*f) (void)); |
| static int surewarehk_destroy(ENGINE *e); |
| static int surewarehk_init(ENGINE *e); |
| static int surewarehk_finish(ENGINE *e); |
| static int surewarehk_modexp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *m, BN_CTX *ctx); |
| |
| /* RSA stuff */ |
| # ifndef OPENSSL_NO_RSA |
| static int surewarehk_rsa_priv_dec(int flen, const unsigned char *from, |
| unsigned char *to, RSA *rsa, int padding); |
| static int surewarehk_rsa_sign(int flen, const unsigned char *from, |
| unsigned char *to, RSA *rsa, int padding); |
| # endif |
| |
| /* RAND stuff */ |
| static int surewarehk_rand_bytes(unsigned char *buf, int num); |
| static void surewarehk_rand_seed(const void *buf, int num); |
| static void surewarehk_rand_add(const void *buf, int num, double entropy); |
| |
| /* KM stuff */ |
| static EVP_PKEY *surewarehk_load_privkey(ENGINE *e, const char *key_id, |
| UI_METHOD *ui_method, |
| void *callback_data); |
| static EVP_PKEY *surewarehk_load_pubkey(ENGINE *e, const char *key_id, |
| UI_METHOD *ui_method, |
| void *callback_data); |
| static void surewarehk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, |
| int idx, long argl, void *argp); |
| # if 0 |
| static void surewarehk_dh_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, |
| int idx, long argl, void *argp); |
| # endif |
| |
| # ifndef OPENSSL_NO_RSA |
| /* This function is aliased to mod_exp (with the mont stuff dropped). */ |
| static int surewarehk_mod_exp_mont(BIGNUM *r, const BIGNUM *a, |
| const BIGNUM *p, const BIGNUM *m, |
| BN_CTX *ctx, BN_MONT_CTX *m_ctx) |
| { |
| return surewarehk_modexp(r, a, p, m, ctx); |
| } |
| |
| /* Our internal RSA_METHOD that we provide pointers to */ |
| static RSA_METHOD surewarehk_rsa = { |
| "SureWare RSA method", |
| NULL, /* pub_enc */ |
| NULL, /* pub_dec */ |
| surewarehk_rsa_sign, /* our rsa_sign is OpenSSL priv_enc */ |
| surewarehk_rsa_priv_dec, /* priv_dec */ |
| NULL, /* mod_exp */ |
| surewarehk_mod_exp_mont, /* mod_exp_mongomery */ |
| NULL, /* init */ |
| NULL, /* finish */ |
| 0, /* RSA flag */ |
| NULL, |
| NULL, /* OpenSSL sign */ |
| NULL, /* OpenSSL verify */ |
| NULL /* keygen */ |
| }; |
| # endif |
| |
| # ifndef OPENSSL_NO_DH |
| /* Our internal DH_METHOD that we provide pointers to */ |
| /* This function is aliased to mod_exp (with the dh and mont dropped). */ |
| static int surewarehk_modexp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a, |
| const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, |
| BN_MONT_CTX *m_ctx) |
| { |
| return surewarehk_modexp(r, a, p, m, ctx); |
| } |
| |
| static DH_METHOD surewarehk_dh = { |
| "SureWare DH method", |
| NULL, /* gen_key */ |
| NULL, /* agree, */ |
| surewarehk_modexp_dh, /* dh mod exp */ |
| NULL, /* init */ |
| NULL, /* finish */ |
| 0, /* flags */ |
| NULL, |
| NULL |
| }; |
| # endif |
| |
| static RAND_METHOD surewarehk_rand = { |
| /* "SureWare RAND method", */ |
| surewarehk_rand_seed, |
| surewarehk_rand_bytes, |
| NULL, /* cleanup */ |
| surewarehk_rand_add, |
| surewarehk_rand_bytes, |
| NULL, /* rand_status */ |
| }; |
| |
| # ifndef OPENSSL_NO_DSA |
| /* DSA stuff */ |
| static DSA_SIG *surewarehk_dsa_do_sign(const unsigned char *dgst, int dlen, |
| DSA *dsa); |
| static int surewarehk_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 (!surewarehk_modexp(rr, a1, p1, m, ctx)) |
| goto end; |
| /* let t = a2 ^ p2 mod m */ |
| if (!surewarehk_modexp(&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 DSA_METHOD surewarehk_dsa = { |
| "SureWare DSA method", |
| surewarehk_dsa_do_sign, |
| NULL, /* sign setup */ |
| NULL, /* verify, */ |
| surewarehk_dsa_mod_exp, /* mod exp */ |
| NULL, /* bn mod exp */ |
| NULL, /* init */ |
| NULL, /* finish */ |
| 0, |
| NULL, |
| NULL, |
| NULL |
| }; |
| # endif |
| |
| static const char *engine_sureware_id = "sureware"; |
| static const char *engine_sureware_name = "SureWare hardware engine support"; |
| |
| /* Now, to our own code */ |
| |
| /* |
| * As this is only ever called once, there's no need for locking (indeed - |
| * the lock will already be held by our caller!!!) |
| */ |
| static int bind_sureware(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_sureware_id) || |
| !ENGINE_set_name(e, engine_sureware_name) || |
| # ifndef OPENSSL_NO_RSA |
| !ENGINE_set_RSA(e, &surewarehk_rsa) || |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| !ENGINE_set_DSA(e, &surewarehk_dsa) || |
| # endif |
| # ifndef OPENSSL_NO_DH |
| !ENGINE_set_DH(e, &surewarehk_dh) || |
| # endif |
| !ENGINE_set_RAND(e, &surewarehk_rand) || |
| !ENGINE_set_destroy_function(e, surewarehk_destroy) || |
| !ENGINE_set_init_function(e, surewarehk_init) || |
| !ENGINE_set_finish_function(e, surewarehk_finish) || |
| !ENGINE_set_ctrl_function(e, surewarehk_ctrl) || |
| !ENGINE_set_load_privkey_function(e, surewarehk_load_privkey) || |
| !ENGINE_set_load_pubkey_function(e, surewarehk_load_pubkey)) |
| return 0; |
| |
| # ifndef OPENSSL_NO_RSA |
| /* |
| * We know that the "PKCS1_SSLeay()" functions hook properly to the |
| * cswift-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(); |
| if (meth1) { |
| surewarehk_rsa.rsa_pub_enc = meth1->rsa_pub_enc; |
| surewarehk_rsa.rsa_pub_dec = meth1->rsa_pub_dec; |
| } |
| # endif |
| |
| # ifndef OPENSSL_NO_DSA |
| /* |
| * Use the DSA_OpenSSL() method and just hook the mod_exp-ish bits. |
| */ |
| meth2 = DSA_OpenSSL(); |
| if (meth2) { |
| surewarehk_dsa.dsa_do_verify = meth2->dsa_do_verify; |
| } |
| # endif |
| |
| # ifndef OPENSSL_NO_DH |
| /* Much the same for Diffie-Hellman */ |
| meth3 = DH_OpenSSL(); |
| if (meth3) { |
| surewarehk_dh.generate_key = meth3->generate_key; |
| surewarehk_dh.compute_key = meth3->compute_key; |
| } |
| # endif |
| |
| /* Ensure the sureware error handling is set up */ |
| ERR_load_SUREWARE_strings(); |
| return 1; |
| } |
| |
| # ifndef OPENSSL_NO_DYNAMIC_ENGINE |
| static int bind_helper(ENGINE *e, const char *id) |
| { |
| if (id && (strcmp(id, engine_sureware_id) != 0)) |
| return 0; |
| if (!bind_sureware(e)) |
| return 0; |
| return 1; |
| } |
| |
| IMPLEMENT_DYNAMIC_CHECK_FN() |
| IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) |
| # else |
| static ENGINE *engine_sureware(void) |
| { |
| ENGINE *ret = ENGINE_new(); |
| if (!ret) |
| return NULL; |
| if (!bind_sureware(ret)) { |
| ENGINE_free(ret); |
| return NULL; |
| } |
| return ret; |
| } |
| |
| void ENGINE_load_sureware(void) |
| { |
| /* Copied from eng_[openssl|dyn].c */ |
| ENGINE *toadd = engine_sureware(); |
| 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 |
| * SureWareHook 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 *surewarehk_dso = NULL; |
| # ifndef OPENSSL_NO_RSA |
| /* Index for KM handle. Not really used yet. */ |
| static int rsaHndidx = -1; |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| /* Index for KM handle. Not really used yet. */ |
| static int dsaHndidx = -1; |
| # endif |
| |
| /* |
| * These are the function pointers that are (un)set when the library has |
| * successfully (un)loaded. |
| */ |
| static SureWareHook_Init_t *p_surewarehk_Init = NULL; |
| static SureWareHook_Finish_t *p_surewarehk_Finish = NULL; |
| static SureWareHook_Rand_Bytes_t *p_surewarehk_Rand_Bytes = NULL; |
| static SureWareHook_Rand_Seed_t *p_surewarehk_Rand_Seed = NULL; |
| static SureWareHook_Load_Privkey_t *p_surewarehk_Load_Privkey = NULL; |
| static SureWareHook_Info_Pubkey_t *p_surewarehk_Info_Pubkey = NULL; |
| static SureWareHook_Load_Rsa_Pubkey_t *p_surewarehk_Load_Rsa_Pubkey = NULL; |
| static SureWareHook_Load_Dsa_Pubkey_t *p_surewarehk_Load_Dsa_Pubkey = NULL; |
| static SureWareHook_Free_t *p_surewarehk_Free = NULL; |
| static SureWareHook_Rsa_Priv_Dec_t *p_surewarehk_Rsa_Priv_Dec = NULL; |
| static SureWareHook_Rsa_Sign_t *p_surewarehk_Rsa_Sign = NULL; |
| static SureWareHook_Dsa_Sign_t *p_surewarehk_Dsa_Sign = NULL; |
| static SureWareHook_Mod_Exp_t *p_surewarehk_Mod_Exp = NULL; |
| |
| /* Used in the DSO operations. */ |
| static const char *surewarehk_LIBNAME = "SureWareHook"; |
| static const char *n_surewarehk_Init = "SureWareHook_Init"; |
| static const char *n_surewarehk_Finish = "SureWareHook_Finish"; |
| static const char *n_surewarehk_Rand_Bytes = "SureWareHook_Rand_Bytes"; |
| static const char *n_surewarehk_Rand_Seed = "SureWareHook_Rand_Seed"; |
| static const char *n_surewarehk_Load_Privkey = "SureWareHook_Load_Privkey"; |
| static const char *n_surewarehk_Info_Pubkey = "SureWareHook_Info_Pubkey"; |
| static const char *n_surewarehk_Load_Rsa_Pubkey = |
| "SureWareHook_Load_Rsa_Pubkey"; |
| static const char *n_surewarehk_Load_Dsa_Pubkey = |
| "SureWareHook_Load_Dsa_Pubkey"; |
| static const char *n_surewarehk_Free = "SureWareHook_Free"; |
| static const char *n_surewarehk_Rsa_Priv_Dec = "SureWareHook_Rsa_Priv_Dec"; |
| static const char *n_surewarehk_Rsa_Sign = "SureWareHook_Rsa_Sign"; |
| static const char *n_surewarehk_Dsa_Sign = "SureWareHook_Dsa_Sign"; |
| static const char *n_surewarehk_Mod_Exp = "SureWareHook_Mod_Exp"; |
| static BIO *logstream = NULL; |
| |
| /* |
| * SureWareHook library functions and mechanics - these are used by the |
| * higher-level functions further down. NB: As and where there's no error |
| * checking, take a look lower down where these functions are called, the |
| * checking and error handling is probably down there. |
| */ |
| static int threadsafe = 1; |
| static int surewarehk_ctrl(ENGINE *e, int cmd, long i, void *p, |
| void (*f) (void)) |
| { |
| int to_return = 1; |
| |
| switch (cmd) { |
| case ENGINE_CTRL_SET_LOGSTREAM: |
| { |
| BIO *bio = (BIO *)p; |
| CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); |
| if (logstream) { |
| BIO_free(logstream); |
| logstream = NULL; |
| } |
| if (CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO) > 1) |
| logstream = bio; |
| else |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_CTRL, |
| SUREWARE_R_BIO_WAS_FREED); |
| } |
| CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); |
| break; |
| /* |
| * This will prevent the initialisation function from "installing" |
| * the mutex-handling callbacks, even if they are available from |
| * within the library (or were provided to the library from the |
| * calling application). This is to remove any baggage for |
| * applications not using multithreading. |
| */ |
| case ENGINE_CTRL_CHIL_NO_LOCKING: |
| CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); |
| threadsafe = 0; |
| CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); |
| break; |
| |
| /* The command isn't understood by this engine */ |
| default: |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_CTRL, |
| ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED); |
| to_return = 0; |
| break; |
| } |
| |
| return to_return; |
| } |
| |
| /* Destructor (complements the "ENGINE_surewarehk()" constructor) */ |
| static int surewarehk_destroy(ENGINE *e) |
| { |
| ERR_unload_SUREWARE_strings(); |
| return 1; |
| } |
| |
| /* (de)initialisation functions. */ |
| static int surewarehk_init(ENGINE *e) |
| { |
| char msg[64] = "ENGINE_init"; |
| SureWareHook_Init_t *p1 = NULL; |
| SureWareHook_Finish_t *p2 = NULL; |
| SureWareHook_Rand_Bytes_t *p3 = NULL; |
| SureWareHook_Rand_Seed_t *p4 = NULL; |
| SureWareHook_Load_Privkey_t *p5 = NULL; |
| SureWareHook_Load_Rsa_Pubkey_t *p6 = NULL; |
| SureWareHook_Free_t *p7 = NULL; |
| SureWareHook_Rsa_Priv_Dec_t *p8 = NULL; |
| SureWareHook_Rsa_Sign_t *p9 = NULL; |
| SureWareHook_Dsa_Sign_t *p12 = NULL; |
| SureWareHook_Info_Pubkey_t *p13 = NULL; |
| SureWareHook_Load_Dsa_Pubkey_t *p14 = NULL; |
| SureWareHook_Mod_Exp_t *p15 = NULL; |
| |
| if (surewarehk_dso != NULL) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT, ENGINE_R_ALREADY_LOADED); |
| goto err; |
| } |
| /* Attempt to load libsurewarehk.so/surewarehk.dll/whatever. */ |
| surewarehk_dso = DSO_load(NULL, surewarehk_LIBNAME, NULL, 0); |
| if (surewarehk_dso == NULL) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT, ENGINE_R_DSO_FAILURE); |
| goto err; |
| } |
| if (! |
| (p1 = |
| (SureWareHook_Init_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Init)) |
| || !(p2 = |
| (SureWareHook_Finish_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Finish)) |
| || !(p3 = |
| (SureWareHook_Rand_Bytes_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Rand_Bytes)) |
| || !(p4 = |
| (SureWareHook_Rand_Seed_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Rand_Seed)) |
| || !(p5 = |
| (SureWareHook_Load_Privkey_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Load_Privkey)) |
| || !(p6 = |
| (SureWareHook_Load_Rsa_Pubkey_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Load_Rsa_Pubkey)) |
| || !(p7 = |
| (SureWareHook_Free_t *) DSO_bind_func(surewarehk_dso, n_surewarehk_Free)) |
| || !(p8 = |
| (SureWareHook_Rsa_Priv_Dec_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Rsa_Priv_Dec)) |
| || !(p9 = |
| (SureWareHook_Rsa_Sign_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Rsa_Sign)) |
| || !(p12 = |
| (SureWareHook_Dsa_Sign_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Dsa_Sign)) |
| || !(p13 = |
| (SureWareHook_Info_Pubkey_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Info_Pubkey)) |
| || !(p14 = |
| (SureWareHook_Load_Dsa_Pubkey_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Load_Dsa_Pubkey)) |
| || !(p15 = |
| (SureWareHook_Mod_Exp_t *) DSO_bind_func(surewarehk_dso, |
| n_surewarehk_Mod_Exp))) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT, ENGINE_R_DSO_FAILURE); |
| goto err; |
| } |
| /* Copy the pointers */ |
| p_surewarehk_Init = p1; |
| p_surewarehk_Finish = p2; |
| p_surewarehk_Rand_Bytes = p3; |
| p_surewarehk_Rand_Seed = p4; |
| p_surewarehk_Load_Privkey = p5; |
| p_surewarehk_Load_Rsa_Pubkey = p6; |
| p_surewarehk_Free = p7; |
| p_surewarehk_Rsa_Priv_Dec = p8; |
| p_surewarehk_Rsa_Sign = p9; |
| p_surewarehk_Dsa_Sign = p12; |
| p_surewarehk_Info_Pubkey = p13; |
| p_surewarehk_Load_Dsa_Pubkey = p14; |
| p_surewarehk_Mod_Exp = p15; |
| /* Contact the hardware and initialises it. */ |
| if (p_surewarehk_Init(msg, threadsafe) == SUREWAREHOOK_ERROR_UNIT_FAILURE) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT, SUREWARE_R_UNIT_FAILURE); |
| goto err; |
| } |
| if (p_surewarehk_Init(msg, threadsafe) == SUREWAREHOOK_ERROR_UNIT_FAILURE) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_INIT, SUREWARE_R_UNIT_FAILURE); |
| goto err; |
| } |
| /* |
| * try to load the default private key, if failed does not return a |
| * failure but wait for an explicit ENGINE_load_privakey |
| */ |
| surewarehk_load_privkey(e, NULL, NULL, NULL); |
| |
| /* Everything's fine. */ |
| # ifndef OPENSSL_NO_RSA |
| if (rsaHndidx == -1) |
| rsaHndidx = RSA_get_ex_new_index(0, |
| "SureWareHook RSA key handle", |
| NULL, NULL, surewarehk_ex_free); |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| if (dsaHndidx == -1) |
| dsaHndidx = DSA_get_ex_new_index(0, |
| "SureWareHook DSA key handle", |
| NULL, NULL, surewarehk_ex_free); |
| # endif |
| |
| return 1; |
| err: |
| if (surewarehk_dso) |
| DSO_free(surewarehk_dso); |
| surewarehk_dso = NULL; |
| p_surewarehk_Init = NULL; |
| p_surewarehk_Finish = NULL; |
| p_surewarehk_Rand_Bytes = NULL; |
| p_surewarehk_Rand_Seed = NULL; |
| p_surewarehk_Load_Privkey = NULL; |
| p_surewarehk_Load_Rsa_Pubkey = NULL; |
| p_surewarehk_Free = NULL; |
| p_surewarehk_Rsa_Priv_Dec = NULL; |
| p_surewarehk_Rsa_Sign = NULL; |
| p_surewarehk_Dsa_Sign = NULL; |
| p_surewarehk_Info_Pubkey = NULL; |
| p_surewarehk_Load_Dsa_Pubkey = NULL; |
| p_surewarehk_Mod_Exp = NULL; |
| return 0; |
| } |
| |
| static int surewarehk_finish(ENGINE *e) |
| { |
| int to_return = 1; |
| if (surewarehk_dso == NULL) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_FINISH, ENGINE_R_NOT_LOADED); |
| to_return = 0; |
| goto err; |
| } |
| p_surewarehk_Finish(); |
| if (!DSO_free(surewarehk_dso)) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_FINISH, ENGINE_R_DSO_FAILURE); |
| to_return = 0; |
| goto err; |
| } |
| err: |
| if (logstream) |
| BIO_free(logstream); |
| surewarehk_dso = NULL; |
| p_surewarehk_Init = NULL; |
| p_surewarehk_Finish = NULL; |
| p_surewarehk_Rand_Bytes = NULL; |
| p_surewarehk_Rand_Seed = NULL; |
| p_surewarehk_Load_Privkey = NULL; |
| p_surewarehk_Load_Rsa_Pubkey = NULL; |
| p_surewarehk_Free = NULL; |
| p_surewarehk_Rsa_Priv_Dec = NULL; |
| p_surewarehk_Rsa_Sign = NULL; |
| p_surewarehk_Dsa_Sign = NULL; |
| p_surewarehk_Info_Pubkey = NULL; |
| p_surewarehk_Load_Dsa_Pubkey = NULL; |
| p_surewarehk_Mod_Exp = NULL; |
| return to_return; |
| } |
| |
| static void surewarehk_error_handling(char *const msg, int func, int ret) |
| { |
| switch (ret) { |
| case SUREWAREHOOK_ERROR_UNIT_FAILURE: |
| ENGINEerr(func, SUREWARE_R_UNIT_FAILURE); |
| break; |
| case SUREWAREHOOK_ERROR_FALLBACK: |
| ENGINEerr(func, SUREWARE_R_REQUEST_FALLBACK); |
| break; |
| case SUREWAREHOOK_ERROR_DATA_SIZE: |
| ENGINEerr(func, SUREWARE_R_SIZE_TOO_LARGE_OR_TOO_SMALL); |
| break; |
| case SUREWAREHOOK_ERROR_INVALID_PAD: |
| ENGINEerr(func, SUREWARE_R_PADDING_CHECK_FAILED); |
| break; |
| default: |
| ENGINEerr(func, SUREWARE_R_REQUEST_FAILED); |
| break; |
| case 1: /* nothing */ |
| msg[0] = '\0'; |
| } |
| if (*msg) { |
| ERR_add_error_data(1, msg); |
| if (logstream) { |
| CRYPTO_w_lock(CRYPTO_LOCK_BIO); |
| BIO_write(logstream, msg, strlen(msg)); |
| CRYPTO_w_unlock(CRYPTO_LOCK_BIO); |
| } |
| } |
| } |
| |
| static int surewarehk_rand_bytes(unsigned char *buf, int num) |
| { |
| int ret = 0; |
| char msg[64] = "ENGINE_rand_bytes"; |
| if (!p_surewarehk_Rand_Bytes) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RAND_BYTES, |
| ENGINE_R_NOT_INITIALISED); |
| } else { |
| ret = p_surewarehk_Rand_Bytes(msg, buf, num); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_RAND_BYTES, ret); |
| } |
| return ret == 1 ? 1 : 0; |
| } |
| |
| static void surewarehk_rand_seed(const void *buf, int num) |
| { |
| int ret = 0; |
| char msg[64] = "ENGINE_rand_seed"; |
| if (!p_surewarehk_Rand_Seed) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RAND_SEED, |
| ENGINE_R_NOT_INITIALISED); |
| } else { |
| ret = p_surewarehk_Rand_Seed(msg, buf, num); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_RAND_SEED, ret); |
| } |
| } |
| |
| static void surewarehk_rand_add(const void *buf, int num, double entropy) |
| { |
| surewarehk_rand_seed(buf, num); |
| } |
| |
| static EVP_PKEY *sureware_load_public(ENGINE *e, const char *key_id, |
| char *hptr, unsigned long el, |
| char keytype) |
| { |
| EVP_PKEY *res = NULL; |
| # ifndef OPENSSL_NO_RSA |
| RSA *rsatmp = NULL; |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| DSA *dsatmp = NULL; |
| # endif |
| char msg[64] = "sureware_load_public"; |
| int ret = 0; |
| if (!p_surewarehk_Load_Rsa_Pubkey || !p_surewarehk_Load_Dsa_Pubkey) { |
| SUREWAREerr(SUREWARE_F_SUREWARE_LOAD_PUBLIC, |
| ENGINE_R_NOT_INITIALISED); |
| goto err; |
| } |
| switch (keytype) { |
| # ifndef OPENSSL_NO_RSA |
| case 1: |
| /*RSA*/ |
| /* set private external reference */ |
| rsatmp = RSA_new_method(e); |
| RSA_set_ex_data(rsatmp, rsaHndidx, hptr); |
| rsatmp->flags |= RSA_FLAG_EXT_PKEY; |
| |
| /* set public big nums */ |
| rsatmp->e = BN_new(); |
| rsatmp->n = BN_new(); |
| if(!rsatmp->e || !rsatmp->n) |
| goto err; |
| bn_expand2(rsatmp->e, el / sizeof(BN_ULONG)); |
| bn_expand2(rsatmp->n, el / sizeof(BN_ULONG)); |
| if (rsatmp->e->dmax != (int)(el / sizeof(BN_ULONG)) || |
| rsatmp->n->dmax != (int)(el / sizeof(BN_ULONG))) |
| goto err; |
| ret = p_surewarehk_Load_Rsa_Pubkey(msg, key_id, el, |
| (unsigned long *)rsatmp->n->d, |
| (unsigned long *)rsatmp->e->d); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWARE_LOAD_PUBLIC, ret); |
| if (ret != 1) { |
| SUREWAREerr(SUREWARE_F_SUREWARE_LOAD_PUBLIC, |
| ENGINE_R_FAILED_LOADING_PUBLIC_KEY); |
| goto err; |
| } |
| /* normalise pub e and pub n */ |
| rsatmp->e->top = el / sizeof(BN_ULONG); |
| bn_fix_top(rsatmp->e); |
| rsatmp->n->top = el / sizeof(BN_ULONG); |
| bn_fix_top(rsatmp->n); |
| /* create an EVP object: engine + rsa key */ |
| res = EVP_PKEY_new(); |
| EVP_PKEY_assign_RSA(res, rsatmp); |
| break; |
| # endif |
| |
| # ifndef OPENSSL_NO_DSA |
| case 2: |
| /*DSA*/ |
| /* set private/public external reference */ |
| dsatmp = DSA_new_method(e); |
| DSA_set_ex_data(dsatmp, dsaHndidx, hptr); |
| /* |
| * dsatmp->flags |= DSA_FLAG_EXT_PKEY; |
| */ |
| |
| /* set public key */ |
| dsatmp->pub_key = BN_new(); |
| dsatmp->p = BN_new(); |
| dsatmp->q = BN_new(); |
| dsatmp->g = BN_new(); |
| if(!dsatmp->pub_key || !dsatmp->p || !dsatmp->q || !dsatmp->g) |
| goto err; |
| bn_expand2(dsatmp->pub_key, el / sizeof(BN_ULONG)); |
| bn_expand2(dsatmp->p, el / sizeof(BN_ULONG)); |
| bn_expand2(dsatmp->q, 20 / sizeof(BN_ULONG)); |
| bn_expand2(dsatmp->g, el / sizeof(BN_ULONG)); |
| if (dsatmp->pub_key->dmax != (int)(el / sizeof(BN_ULONG)) |
| || dsatmp->p->dmax != (int)(el / sizeof(BN_ULONG)) |
| || dsatmp->q->dmax != 20 / sizeof(BN_ULONG) |
| || dsatmp->g->dmax != (int)(el / sizeof(BN_ULONG))) |
| goto err; |
| |
| ret = p_surewarehk_Load_Dsa_Pubkey(msg, key_id, el, |
| (unsigned long *)dsatmp-> |
| pub_key->d, |
| (unsigned long *)dsatmp->p->d, |
| (unsigned long *)dsatmp->q->d, |
| (unsigned long *)dsatmp->g->d); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWARE_LOAD_PUBLIC, ret); |
| if (ret != 1) { |
| SUREWAREerr(SUREWARE_F_SUREWARE_LOAD_PUBLIC, |
| ENGINE_R_FAILED_LOADING_PUBLIC_KEY); |
| goto err; |
| } |
| /* set parameters */ |
| /* normalise pubkey and parameters in case of */ |
| dsatmp->pub_key->top = el / sizeof(BN_ULONG); |
| bn_fix_top(dsatmp->pub_key); |
| dsatmp->p->top = el / sizeof(BN_ULONG); |
| bn_fix_top(dsatmp->p); |
| dsatmp->q->top = 20 / sizeof(BN_ULONG); |
| bn_fix_top(dsatmp->q); |
| dsatmp->g->top = el / sizeof(BN_ULONG); |
| bn_fix_top(dsatmp->g); |
| |
| /* create an EVP object: engine + rsa key */ |
| res = EVP_PKEY_new(); |
| EVP_PKEY_assign_DSA(res, dsatmp); |
| break; |
| # endif |
| |
| default: |
| SUREWAREerr(SUREWARE_F_SUREWARE_LOAD_PUBLIC, |
| ENGINE_R_FAILED_LOADING_PRIVATE_KEY); |
| goto err; |
| } |
| return res; |
| err: |
| # ifndef OPENSSL_NO_RSA |
| if (rsatmp) |
| RSA_free(rsatmp); |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| if (dsatmp) |
| DSA_free(dsatmp); |
| # endif |
| return NULL; |
| } |
| |
| static EVP_PKEY *surewarehk_load_privkey(ENGINE *e, const char *key_id, |
| UI_METHOD *ui_method, |
| void *callback_data) |
| { |
| EVP_PKEY *res = NULL; |
| int ret = 0; |
| unsigned long el = 0; |
| char *hptr = NULL; |
| char keytype = 0; |
| char msg[64] = "ENGINE_load_privkey"; |
| |
| if (!p_surewarehk_Load_Privkey) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVKEY, |
| ENGINE_R_NOT_INITIALISED); |
| } else { |
| ret = p_surewarehk_Load_Privkey(msg, key_id, &hptr, &el, &keytype); |
| if (ret != 1) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PRIVKEY, |
| ENGINE_R_FAILED_LOADING_PRIVATE_KEY); |
| ERR_add_error_data(1, msg); |
| } else |
| res = sureware_load_public(e, key_id, hptr, el, keytype); |
| } |
| return res; |
| } |
| |
| static EVP_PKEY *surewarehk_load_pubkey(ENGINE *e, const char *key_id, |
| UI_METHOD *ui_method, |
| void *callback_data) |
| { |
| EVP_PKEY *res = NULL; |
| int ret = 0; |
| unsigned long el = 0; |
| char *hptr = NULL; |
| char keytype = 0; |
| char msg[64] = "ENGINE_load_pubkey"; |
| |
| if (!p_surewarehk_Info_Pubkey) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PUBKEY, |
| ENGINE_R_NOT_INITIALISED); |
| } else { |
| /* call once to identify if DSA or RSA */ |
| ret = p_surewarehk_Info_Pubkey(msg, key_id, &el, &keytype); |
| if (ret != 1) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_LOAD_PUBKEY, |
| ENGINE_R_FAILED_LOADING_PUBLIC_KEY); |
| ERR_add_error_data(1, msg); |
| } else |
| res = sureware_load_public(e, key_id, hptr, el, keytype); |
| } |
| return res; |
| } |
| |
| /* |
| * This cleans up an RSA/DSA KM key(do not destroy the key into the hardware) |
| * , called when ex_data is freed |
| */ |
| static void surewarehk_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, |
| int idx, long argl, void *argp) |
| { |
| if (!p_surewarehk_Free) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_EX_FREE, ENGINE_R_NOT_INITIALISED); |
| } else |
| p_surewarehk_Free((char *)item, 0); |
| } |
| |
| # if 0 |
| /* not currently used (bug?) */ |
| /* |
| * This cleans up an DH KM key (destroys the key into hardware), called when |
| * ex_data is freed |
| */ |
| static void surewarehk_dh_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad, |
| int idx, long argl, void *argp) |
| { |
| if (!p_surewarehk_Free) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_DH_EX_FREE, |
| ENGINE_R_NOT_INITIALISED); |
| } else |
| p_surewarehk_Free((char *)item, 1); |
| } |
| # endif |
| |
| /* |
| * return number of decrypted bytes |
| */ |
| # ifndef OPENSSL_NO_RSA |
| static int surewarehk_rsa_priv_dec(int flen, const unsigned char *from, |
| unsigned char *to, RSA *rsa, int padding) |
| { |
| int ret = 0, tlen; |
| char *buf = NULL, *hptr = NULL; |
| char msg[64] = "ENGINE_rsa_priv_dec"; |
| if (!p_surewarehk_Rsa_Priv_Dec) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| ENGINE_R_NOT_INITIALISED); |
| } |
| /* extract ref to private key */ |
| else if (!(hptr = RSA_get_ex_data(rsa, rsaHndidx))) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| SUREWARE_R_MISSING_KEY_COMPONENTS); |
| goto err; |
| } |
| /* analyse what padding we can do into the hardware */ |
| if (padding == RSA_PKCS1_PADDING) { |
| /* do it one shot */ |
| ret = |
| p_surewarehk_Rsa_Priv_Dec(msg, flen, (unsigned char *)from, &tlen, |
| to, hptr, SUREWARE_PKCS1_PAD); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| ret); |
| if (ret != 1) |
| goto err; |
| ret = tlen; |
| } else { /* do with no padding into hardware */ |
| |
| ret = |
| p_surewarehk_Rsa_Priv_Dec(msg, flen, (unsigned char *)from, &tlen, |
| to, hptr, SUREWARE_NO_PAD); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| ret); |
| if (ret != 1) |
| goto err; |
| /* intermediate buffer for padding */ |
| if ((buf = OPENSSL_malloc(tlen)) == NULL) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| memcpy(buf, to, tlen); /* transfert to into buf */ |
| switch (padding) { /* check padding in software */ |
| # ifndef OPENSSL_NO_SHA |
| case RSA_PKCS1_OAEP_PADDING: |
| ret = |
| RSA_padding_check_PKCS1_OAEP(to, tlen, (unsigned char *)buf, |
| tlen, tlen, NULL, 0); |
| break; |
| # endif |
| case RSA_SSLV23_PADDING: |
| ret = |
| RSA_padding_check_SSLv23(to, tlen, (unsigned char *)buf, flen, |
| tlen); |
| break; |
| case RSA_NO_PADDING: |
| ret = |
| RSA_padding_check_none(to, tlen, (unsigned char *)buf, flen, |
| tlen); |
| break; |
| default: |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| SUREWARE_R_UNKNOWN_PADDING_TYPE); |
| goto err; |
| } |
| if (ret < 0) |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_PRIV_DEC, |
| SUREWARE_R_PADDING_CHECK_FAILED); |
| } |
| err: |
| if (buf) { |
| OPENSSL_cleanse(buf, tlen); |
| OPENSSL_free(buf); |
| } |
| return ret; |
| } |
| |
| /* |
| * Does what OpenSSL rsa_priv_enc does. |
| */ |
| static int surewarehk_rsa_sign(int flen, const unsigned char *from, |
| unsigned char *to, RSA *rsa, int padding) |
| { |
| int ret = 0, tlen; |
| char *hptr = NULL; |
| char msg[64] = "ENGINE_rsa_sign"; |
| if (!p_surewarehk_Rsa_Sign) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_SIGN, ENGINE_R_NOT_INITIALISED); |
| } |
| /* extract ref to private key */ |
| else if (!(hptr = RSA_get_ex_data(rsa, rsaHndidx))) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_SIGN, |
| SUREWARE_R_MISSING_KEY_COMPONENTS); |
| } else { |
| switch (padding) { |
| case RSA_PKCS1_PADDING: /* do it in one shot */ |
| ret = |
| p_surewarehk_Rsa_Sign(msg, flen, (unsigned char *)from, &tlen, |
| to, hptr, SUREWARE_PKCS1_PAD); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_RSA_SIGN, |
| ret); |
| break; |
| case RSA_NO_PADDING: |
| default: |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_RSA_SIGN, |
| SUREWARE_R_UNKNOWN_PADDING_TYPE); |
| } |
| } |
| return ret == 1 ? tlen : ret; |
| } |
| |
| # endif |
| |
| # ifndef OPENSSL_NO_DSA |
| /* DSA sign and verify */ |
| static DSA_SIG *surewarehk_dsa_do_sign(const unsigned char *from, int flen, |
| DSA *dsa) |
| { |
| int ret = 0; |
| char *hptr = NULL; |
| DSA_SIG *psign = NULL; |
| char msg[64] = "ENGINE_dsa_do_sign"; |
| if (!p_surewarehk_Dsa_Sign) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN, |
| ENGINE_R_NOT_INITIALISED); |
| goto err; |
| } |
| /* extract ref to private key */ |
| else if (!(hptr = DSA_get_ex_data(dsa, dsaHndidx))) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN, |
| SUREWARE_R_MISSING_KEY_COMPONENTS); |
| goto err; |
| } else { |
| if ((psign = DSA_SIG_new()) == NULL) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_DSA_DO_SIGN, |
| ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| psign->r = BN_new(); |
| psign->s = BN_new(); |
| if(!psign->r || !psign->s) |
| goto err; |
| bn_expand2(psign->r, 20 / sizeof(BN_ULONG)); |
| bn_expand2(psign->s, 20 / sizeof(BN_ULONG)); |
| if (psign->r->dmax != 20 / sizeof(BN_ULONG) || |
| psign->s->dmax != 20 / sizeof(BN_ULONG)) |
| goto err; |
| ret = p_surewarehk_Dsa_Sign(msg, flen, from, |
| (unsigned long *)psign->r->d, |
| (unsigned long *)psign->s->d, hptr); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_DSA_DO_SIGN, |
| ret); |
| } |
| psign->r->top = 20 / sizeof(BN_ULONG); |
| bn_fix_top(psign->r); |
| psign->s->top = 20 / sizeof(BN_ULONG); |
| bn_fix_top(psign->s); |
| |
| err: |
| if (psign) { |
| DSA_SIG_free(psign); |
| psign = NULL; |
| } |
| return psign; |
| } |
| # endif |
| |
| static int surewarehk_modexp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *m, BN_CTX *ctx) |
| { |
| int ret = 0; |
| char msg[64] = "ENGINE_modexp"; |
| if (!p_surewarehk_Mod_Exp) { |
| SUREWAREerr(SUREWARE_F_SUREWAREHK_MODEXP, ENGINE_R_NOT_INITIALISED); |
| } else if (r) { |
| bn_expand2(r, m->top); |
| if (r->dmax == m->top) { |
| /* do it */ |
| ret = p_surewarehk_Mod_Exp(msg, |
| m->top * sizeof(BN_ULONG), |
| (unsigned long *)m->d, |
| p->top * sizeof(BN_ULONG), |
| (unsigned long *)p->d, |
| a->top * sizeof(BN_ULONG), |
| (unsigned long *)a->d, |
| (unsigned long *)r->d); |
| surewarehk_error_handling(msg, SUREWARE_F_SUREWAREHK_MODEXP, ret); |
| if (ret == 1) { |
| /* normalise result */ |
| r->top = m->top; |
| bn_fix_top(r); |
| } |
| } |
| } |
| return ret; |
| } |
| # endif /* !OPENSSL_NO_HW_SureWare */ |
| #endif /* !OPENSSL_NO_HW */ |
