| /* crypto/engine/hw_ibmca.c */ |
| /* |
| * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project |
| * 2000. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1999 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). |
| * |
| */ |
| |
| /* (C) COPYRIGHT International Business Machines Corp. 2001 */ |
| |
| #include <stdio.h> |
| #include <openssl/crypto.h> |
| #include <openssl/dso.h> |
| #include <openssl/engine.h> |
| |
| #ifndef OPENSSL_NO_HW |
| # ifndef OPENSSL_NO_HW_IBMCA |
| |
| # ifdef FLAT_INC |
| # include "ica_openssl_api.h" |
| # else |
| # include "vendor_defns/ica_openssl_api.h" |
| # endif |
| |
| # define IBMCA_LIB_NAME "ibmca engine" |
| # include "hw_ibmca_err.c" |
| |
| static int ibmca_destroy(ENGINE *e); |
| static int ibmca_init(ENGINE *e); |
| static int ibmca_finish(ENGINE *e); |
| static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ()); |
| |
| static const char *IBMCA_F1 = "icaOpenAdapter"; |
| static const char *IBMCA_F2 = "icaCloseAdapter"; |
| static const char *IBMCA_F3 = "icaRsaModExpo"; |
| static const char *IBMCA_F4 = "icaRandomNumberGenerate"; |
| static const char *IBMCA_F5 = "icaRsaCrt"; |
| |
| ICA_ADAPTER_HANDLE handle = 0; |
| |
| /* BIGNUM stuff */ |
| static int ibmca_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *m, BN_CTX *ctx); |
| |
| static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *q, const BIGNUM *dmp1, |
| const BIGNUM *dmq1, const BIGNUM *iqmp, |
| BN_CTX *ctx); |
| |
| # ifndef OPENSSL_NO_RSA |
| /* RSA stuff */ |
| static int ibmca_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa); |
| # endif |
| |
| /* This function is aliased to mod_exp (with the mont stuff dropped). */ |
| static int ibmca_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 |
| /* DSA stuff */ |
| static int ibmca_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 ibmca_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 ibmca_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 |
| |
| /* RAND stuff */ |
| static int ibmca_rand_bytes(unsigned char *buf, int num); |
| static int ibmca_rand_status(void); |
| |
| /* WJH - check for more commands, like in nuron */ |
| |
| /* The definitions for control commands specific to this engine */ |
| # define IBMCA_CMD_SO_PATH ENGINE_CMD_BASE |
| static const ENGINE_CMD_DEFN ibmca_cmd_defns[] = { |
| {IBMCA_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 ibmca_rsa = { |
| "Ibmca RSA method", |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| ibmca_rsa_mod_exp, |
| ibmca_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 ibmca_dsa = { |
| "Ibmca DSA method", |
| NULL, /* dsa_do_sign */ |
| NULL, /* dsa_sign_setup */ |
| NULL, /* dsa_do_verify */ |
| ibmca_dsa_mod_exp, /* dsa_mod_exp */ |
| ibmca_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 ibmca_dh = { |
| "Ibmca DH method", |
| NULL, |
| NULL, |
| ibmca_mod_exp_dh, |
| NULL, |
| NULL, |
| 0, |
| NULL |
| }; |
| # endif |
| |
| static RAND_METHOD ibmca_rand = { |
| /* "IBMCA RAND method", */ |
| NULL, |
| ibmca_rand_bytes, |
| NULL, |
| NULL, |
| ibmca_rand_bytes, |
| ibmca_rand_status, |
| }; |
| |
| /* Constants used when creating the ENGINE */ |
| static const char *engine_ibmca_id = "ibmca"; |
| static const char *engine_ibmca_name = "Ibmca hardware engine support"; |
| |
| /* |
| * This internal function is used by ENGINE_ibmca() 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_ibmca_id) || |
| !ENGINE_set_name(e, engine_ibmca_name) || |
| # ifndef OPENSSL_NO_RSA |
| !ENGINE_set_RSA(e, &ibmca_rsa) || |
| # endif |
| # ifndef OPENSSL_NO_DSA |
| !ENGINE_set_DSA(e, &ibmca_dsa) || |
| # endif |
| # ifndef OPENSSL_NO_DH |
| !ENGINE_set_DH(e, &ibmca_dh) || |
| # endif |
| !ENGINE_set_RAND(e, &ibmca_rand) || |
| !ENGINE_set_destroy_function(e, ibmca_destroy) || |
| !ENGINE_set_init_function(e, ibmca_init) || |
| !ENGINE_set_finish_function(e, ibmca_finish) || |
| !ENGINE_set_ctrl_function(e, ibmca_ctrl) || |
| !ENGINE_set_cmd_defns(e, ibmca_cmd_defns)) |
| return 0; |
| |
| # ifndef OPENSSL_NO_RSA |
| /* |
| * We know that the "PKCS1_SSLeay()" functions hook properly to the |
| * ibmca-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(); |
| ibmca_rsa.rsa_pub_enc = meth1->rsa_pub_enc; |
| ibmca_rsa.rsa_pub_dec = meth1->rsa_pub_dec; |
| ibmca_rsa.rsa_priv_enc = meth1->rsa_priv_enc; |
| ibmca_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(); |
| ibmca_dsa.dsa_do_sign = meth2->dsa_do_sign; |
| ibmca_dsa.dsa_sign_setup = meth2->dsa_sign_setup; |
| ibmca_dsa.dsa_do_verify = meth2->dsa_do_verify; |
| # endif |
| |
| # ifndef OPENSSL_NO_DH |
| /* Much the same for Diffie-Hellman */ |
| meth3 = DH_OpenSSL(); |
| ibmca_dh.generate_key = meth3->generate_key; |
| ibmca_dh.compute_key = meth3->compute_key; |
| # endif |
| |
| /* Ensure the ibmca error handling is set up */ |
| ERR_load_IBMCA_strings(); |
| return 1; |
| } |
| |
| static ENGINE *engine_ibmca(void) |
| { |
| ENGINE *ret = ENGINE_new(); |
| if (!ret) |
| return NULL; |
| if (!bind_helper(ret)) { |
| ENGINE_free(ret); |
| return NULL; |
| } |
| return ret; |
| } |
| |
| # ifdef ENGINE_DYNAMIC_SUPPORT |
| static |
| # endif |
| void ENGINE_load_ibmca(void) |
| { |
| /* Copied from eng_[openssl|dyn].c */ |
| ENGINE *toadd = engine_ibmca(); |
| if (!toadd) |
| return; |
| ENGINE_add(toadd); |
| ENGINE_free(toadd); |
| ERR_clear_error(); |
| } |
| |
| /* Destructor (complements the "ENGINE_ibmca()" constructor) */ |
| static int ibmca_destroy(ENGINE *e) |
| { |
| /* |
| * Unload the ibmca 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_IBMCA_strings(); |
| return 1; |
| } |
| |
| /* |
| * This is a process-global DSO handle used for loading and unloading the |
| * Ibmca 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 *ibmca_dso = NULL; |
| |
| /* |
| * These are the function pointers that are (un)set when the library has |
| * successfully (un)loaded. |
| */ |
| |
| static unsigned int (ICA_CALL * p_icaOpenAdapter) (); |
| static unsigned int (ICA_CALL * p_icaCloseAdapter) (); |
| static unsigned int (ICA_CALL * p_icaRsaModExpo) (); |
| static unsigned int (ICA_CALL * p_icaRandomNumberGenerate) (); |
| static unsigned int (ICA_CALL * p_icaRsaCrt) (); |
| |
| /* utility function to obtain a context */ |
| static int get_context(ICA_ADAPTER_HANDLE * p_handle) |
| { |
| unsigned int status = 0; |
| |
| status = p_icaOpenAdapter(0, p_handle); |
| if (status != 0) |
| return 0; |
| return 1; |
| } |
| |
| /* similarly to release one. */ |
| static void release_context(ICA_ADAPTER_HANDLE handle) |
| { |
| p_icaCloseAdapter(handle); |
| } |
| |
| /* (de)initialisation functions. */ |
| static int ibmca_init(ENGINE *e) |
| { |
| |
| void (*p1) (); |
| void (*p2) (); |
| void (*p3) (); |
| void (*p4) (); |
| void (*p5) (); |
| |
| if (ibmca_dso != NULL) { |
| IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_ALREADY_LOADED); |
| goto err; |
| } |
| /* |
| * Attempt to load libatasi.so/atasi.dll/whatever. Needs to be changed |
| * unfortunately because the Ibmca drivers don't have standard library |
| * names that can be platform-translated well. |
| */ |
| /* |
| * TODO: Work out how to actually map to the names the Ibmca 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. |
| */ |
| |
| /* WJH XXX check name translation */ |
| |
| ibmca_dso = DSO_load(NULL, IBMCA_LIBNAME, NULL, |
| /* |
| * DSO_FLAG_NAME_TRANSLATION |
| */ 0); |
| if (ibmca_dso == NULL) { |
| IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_DSO_FAILURE); |
| goto err; |
| } |
| |
| if (!(p1 = DSO_bind_func(ibmca_dso, IBMCA_F1)) || |
| !(p2 = DSO_bind_func(ibmca_dso, IBMCA_F2)) || |
| !(p3 = DSO_bind_func(ibmca_dso, IBMCA_F3)) || |
| !(p4 = DSO_bind_func(ibmca_dso, IBMCA_F4)) || |
| !(p5 = DSO_bind_func(ibmca_dso, IBMCA_F5))) { |
| IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_DSO_FAILURE); |
| goto err; |
| } |
| |
| /* Copy the pointers */ |
| |
| p_icaOpenAdapter = (unsigned int (ICA_CALL *) ())p1; |
| p_icaCloseAdapter = (unsigned int (ICA_CALL *) ())p2; |
| p_icaRsaModExpo = (unsigned int (ICA_CALL *) ())p3; |
| p_icaRandomNumberGenerate = (unsigned int (ICA_CALL *) ())p4; |
| p_icaRsaCrt = (unsigned int (ICA_CALL *) ())p5; |
| |
| if (!get_context(&handle)) { |
| IBMCAerr(IBMCA_F_IBMCA_INIT, IBMCA_R_UNIT_FAILURE); |
| goto err; |
| } |
| |
| return 1; |
| err: |
| if (ibmca_dso) |
| DSO_free(ibmca_dso); |
| |
| p_icaOpenAdapter = NULL; |
| p_icaCloseAdapter = NULL; |
| p_icaRsaModExpo = NULL; |
| p_icaRandomNumberGenerate = NULL; |
| |
| return 0; |
| } |
| |
| static int ibmca_finish(ENGINE *e) |
| { |
| if (ibmca_dso == NULL) { |
| IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_NOT_LOADED); |
| return 0; |
| } |
| release_context(handle); |
| if (!DSO_free(ibmca_dso)) { |
| IBMCAerr(IBMCA_F_IBMCA_FINISH, IBMCA_R_DSO_FAILURE); |
| return 0; |
| } |
| ibmca_dso = NULL; |
| |
| return 1; |
| } |
| |
| static int ibmca_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) ()) |
| { |
| int initialised = ((ibmca_dso == NULL) ? 0 : 1); |
| switch (cmd) { |
| case IBMCA_CMD_SO_PATH: |
| if (p == NULL) { |
| IBMCAerr(IBMCA_F_IBMCA_CTRL, ERR_R_PASSED_NULL_PARAMETER); |
| return 0; |
| } |
| if (initialised) { |
| IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_ALREADY_LOADED); |
| return 0; |
| } |
| IBMCA_LIBNAME = (const char *)p; |
| return 1; |
| default: |
| break; |
| } |
| IBMCAerr(IBMCA_F_IBMCA_CTRL, IBMCA_R_CTRL_COMMAND_NOT_IMPLEMENTED); |
| return 0; |
| } |
| |
| static int ibmca_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 |
| * Ibmca 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 *argument = NULL; |
| BIGNUM *result = NULL; |
| BIGNUM *key = NULL; |
| int to_return; |
| int inLen, outLen, tmpLen; |
| |
| ICA_KEY_RSA_MODEXPO *publKey = NULL; |
| unsigned int rc; |
| |
| to_return = 0; /* expect failure */ |
| |
| if (!ibmca_dso) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_NOT_LOADED); |
| goto err; |
| } |
| /* Prepare the params */ |
| BN_CTX_start(ctx); |
| argument = BN_CTX_get(ctx); |
| result = BN_CTX_get(ctx); |
| key = BN_CTX_get(ctx); |
| |
| if (!argument || !result || !key) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_CTX_FULL); |
| goto err; |
| } |
| |
| if (!bn_wexpand(argument, m->top) || !bn_wexpand(result, m->top) || |
| !bn_wexpand(key, sizeof(*publKey) / BN_BYTES)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_BN_EXPAND_FAIL); |
| goto err; |
| } |
| |
| publKey = (ICA_KEY_RSA_MODEXPO *)key->d; |
| |
| if (publKey == NULL) { |
| goto err; |
| } |
| memset(publKey, 0, sizeof(ICA_KEY_RSA_MODEXPO)); |
| |
| publKey->keyType = CORRECT_ENDIANNESS(ME_KEY_TYPE); |
| publKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_MODEXPO)); |
| publKey->expOffset = (char *)publKey->keyRecord - (char *)publKey; |
| |
| /* |
| * A quirk of the card: the exponent length has to be the same as the |
| * modulus (key) length |
| */ |
| |
| outLen = BN_num_bytes(m); |
| |
| /* check for modulus length SAB*/ |
| if (outLen > 256) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_MEXP_LENGTH_TO_LARGE); |
| goto err; |
| } |
| /* check for modulus length SAB*/ |
| |
| publKey->expLength = publKey->nLength = outLen; |
| /* |
| * SAB Check for underflow condition the size of the exponent is less |
| * than the size of the parameter then we have a big problem and will |
| * underflow the keyRecord buffer. Bad stuff could happen then |
| */ |
| if (outLen < BN_num_bytes(p)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_UNDERFLOW_KEYRECORD); |
| goto err; |
| } |
| /* SAB End check for underflow */ |
| |
| BN_bn2bin(p, &publKey->keyRecord[publKey->expLength - BN_num_bytes(p)]); |
| BN_bn2bin(m, &publKey->keyRecord[publKey->expLength]); |
| |
| publKey->modulusBitLength = CORRECT_ENDIANNESS(publKey->nLength * 8); |
| publKey->nOffset = CORRECT_ENDIANNESS(publKey->expOffset + |
| publKey->expLength); |
| |
| publKey->expOffset = CORRECT_ENDIANNESS((char *)publKey->keyRecord - |
| (char *)publKey); |
| |
| tmpLen = outLen; |
| publKey->expLength = publKey->nLength = CORRECT_ENDIANNESS(tmpLen); |
| |
| /* Prepare the argument */ |
| |
| memset(argument->d, 0, outLen); |
| BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a)); |
| |
| inLen = outLen; |
| |
| /* Perform the operation */ |
| |
| if ((rc = p_icaRsaModExpo(handle, inLen, (unsigned char *)argument->d, |
| publKey, &outLen, (unsigned char *)result->d)) |
| != 0) { |
| printf("rc = %d\n", rc); |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP, IBMCA_R_REQUEST_FAILED); |
| goto err; |
| } |
| |
| /* Convert the response */ |
| BN_bin2bn((unsigned char *)result->d, outLen, r); |
| to_return = 1; |
| err: |
| BN_CTX_end(ctx); |
| return to_return; |
| } |
| |
| # ifndef OPENSSL_NO_RSA |
| static int ibmca_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) { |
| if (!rsa->d || !rsa->n) { |
| IBMCAerr(IBMCA_F_IBMCA_RSA_MOD_EXP, |
| IBMCA_R_MISSING_KEY_COMPONENTS); |
| goto err; |
| } |
| to_return = ibmca_mod_exp(r0, I, rsa->d, rsa->n, ctx); |
| } else { |
| to_return = ibmca_mod_exp_crt(r0, I, rsa->p, rsa->q, rsa->dmp1, |
| rsa->dmq1, rsa->iqmp, ctx); |
| } |
| err: |
| if (ctx) |
| BN_CTX_free(ctx); |
| return to_return; |
| } |
| # endif |
| |
| /* Ein kleines chinesisches "Restessen" */ |
| static int ibmca_mod_exp_crt(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *q, const BIGNUM *dmp1, |
| const BIGNUM *dmq1, const BIGNUM *iqmp, |
| BN_CTX *ctx) |
| { |
| |
| BIGNUM *argument = NULL; |
| BIGNUM *result = NULL; |
| BIGNUM *key = NULL; |
| |
| int to_return = 0; /* expect failure */ |
| |
| char *pkey = NULL; |
| ICA_KEY_RSA_CRT *privKey = NULL; |
| int inLen, outLen; |
| |
| int rc; |
| unsigned int offset, pSize, qSize; |
| /* SAB New variables */ |
| unsigned int keyRecordSize; |
| unsigned int pbytes = BN_num_bytes(p); |
| unsigned int qbytes = BN_num_bytes(q); |
| unsigned int dmp1bytes = BN_num_bytes(dmp1); |
| unsigned int dmq1bytes = BN_num_bytes(dmq1); |
| unsigned int iqmpbytes = BN_num_bytes(iqmp); |
| |
| /* Prepare the params */ |
| |
| BN_CTX_start(ctx); |
| argument = BN_CTX_get(ctx); |
| result = BN_CTX_get(ctx); |
| key = BN_CTX_get(ctx); |
| |
| if (!argument || !result || !key) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_CTX_FULL); |
| goto err; |
| } |
| |
| if (!bn_wexpand(argument, p->top + q->top) || |
| !bn_wexpand(result, p->top + q->top) || |
| !bn_wexpand(key, sizeof(*privKey) / BN_BYTES)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_BN_EXPAND_FAIL); |
| goto err; |
| } |
| |
| privKey = (ICA_KEY_RSA_CRT *)key->d; |
| /* |
| * SAB Add check for total size in bytes of the parms does not exceed the |
| * buffer space we have do this first |
| */ |
| keyRecordSize = pbytes + qbytes + dmp1bytes + dmq1bytes + iqmpbytes; |
| if (keyRecordSize > sizeof(privKey->keyRecord)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
| goto err; |
| } |
| |
| if ((qbytes + dmq1bytes) > 256) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
| goto err; |
| } |
| |
| if (pbytes + dmp1bytes > 256) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
| goto err; |
| } |
| |
| /* end SAB additions */ |
| |
| memset(privKey, 0, sizeof(ICA_KEY_RSA_CRT)); |
| privKey->keyType = CORRECT_ENDIANNESS(CRT_KEY_TYPE); |
| privKey->keyLength = CORRECT_ENDIANNESS(sizeof(ICA_KEY_RSA_CRT)); |
| privKey->modulusBitLength = CORRECT_ENDIANNESS(BN_num_bytes(q) * 2 * 8); |
| |
| /* |
| * p,dp & qInv are 1 QWORD Larger |
| */ |
| privKey->pLength = CORRECT_ENDIANNESS(BN_num_bytes(p) + 8); |
| privKey->qLength = CORRECT_ENDIANNESS(BN_num_bytes(q)); |
| privKey->dpLength = CORRECT_ENDIANNESS(BN_num_bytes(dmp1) + 8); |
| privKey->dqLength = CORRECT_ENDIANNESS(BN_num_bytes(dmq1)); |
| privKey->qInvLength = CORRECT_ENDIANNESS(BN_num_bytes(iqmp) + 8); |
| |
| offset = (char *)privKey->keyRecord - (char *)privKey; |
| |
| qSize = BN_num_bytes(q); |
| pSize = qSize + 8; /* 1 QWORD larger */ |
| |
| /* |
| * SAB probably aittle redundant, but we'll verify that each of the |
| * components which make up a key record sent ot the card does not exceed |
| * the space that is allocated for it. this handles the case where even |
| * if the total length does not exceed keyrecord zied, if the operands are |
| * funny sized they could cause potential side affects on either the card |
| * or the result |
| */ |
| |
| if ((pbytes > pSize) || (dmp1bytes > pSize) || |
| (iqmpbytes > pSize) || (qbytes > qSize) || (dmq1bytes > qSize)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OPERANDS_TO_LARGE); |
| goto err; |
| |
| } |
| |
| privKey->dpOffset = CORRECT_ENDIANNESS(offset); |
| |
| offset += pSize; |
| privKey->dqOffset = CORRECT_ENDIANNESS(offset); |
| |
| offset += qSize; |
| privKey->pOffset = CORRECT_ENDIANNESS(offset); |
| |
| offset += pSize; |
| privKey->qOffset = CORRECT_ENDIANNESS(offset); |
| |
| offset += qSize; |
| privKey->qInvOffset = CORRECT_ENDIANNESS(offset); |
| |
| pkey = (char *)privKey->keyRecord; |
| |
| /* SAB first check that we don;t under flow the buffer */ |
| if (pSize < pbytes) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); |
| goto err; |
| } |
| |
| /* pkey += pSize - BN_num_bytes(p); WROING this should be dmp1) */ |
| pkey += pSize - BN_num_bytes(dmp1); |
| BN_bn2bin(dmp1, pkey); |
| pkey += BN_num_bytes(dmp1); /* move the pointer */ |
| |
| BN_bn2bin(dmq1, pkey); /* Copy over dmq1 */ |
| |
| pkey += qSize; /* move pointer */ |
| /* set up for zero padding of next field */ |
| pkey += pSize - BN_num_bytes(p); |
| |
| BN_bn2bin(p, pkey); |
| /* increment pointer by number of bytes moved */ |
| pkey += BN_num_bytes(p); |
| |
| BN_bn2bin(q, pkey); |
| pkey += qSize; /* move the pointer */ |
| pkey += pSize - BN_num_bytes(iqmp); /* Adjust for padding */ |
| BN_bn2bin(iqmp, pkey); |
| |
| /* Prepare the argument and response */ |
| |
| /* |
| * Correct endianess is used because the fields were converted above |
| */ |
| outLen = CORRECT_ENDIANNESS(privKey->qLength) * 2; |
| |
| if (outLen > 256) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_OUTLEN_TO_LARGE); |
| goto err; |
| } |
| |
| /* SAB check for underflow here on the argeument */ |
| if (outLen < BN_num_bytes(a)) { |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_UNDERFLOW_CONDITION); |
| goto err; |
| } |
| |
| BN_bn2bin(a, (unsigned char *)argument->d + outLen - BN_num_bytes(a)); |
| inLen = outLen; |
| |
| memset(result->d, 0, outLen); |
| |
| /* Perform the operation */ |
| |
| if ((rc = p_icaRsaCrt(handle, inLen, (unsigned char *)argument->d, |
| privKey, &outLen, (unsigned char *)result->d)) != 0) |
| { |
| printf("rc = %d\n", rc); |
| IBMCAerr(IBMCA_F_IBMCA_MOD_EXP_CRT, IBMCA_R_REQUEST_FAILED); |
| goto err; |
| } |
| |
| /* Convert the response */ |
| |
| BN_bin2bn((unsigned char *)result->d, outLen, r); |
| to_return = 1; |
| |
| err: |
| BN_CTX_end(ctx); |
| return to_return; |
| |
| } |
| |
| # 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 Ibmca acceleration (it |
| * doesn't have a CRT form for RSA), this function means that an Ibmca 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 |
| * ibmca dsa1024 rsa1024". |
| */ |
| static int ibmca_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 (!ibmca_mod_exp(rr, a1, p1, m, ctx)) |
| goto end; |
| /* let t = a2 ^ p2 mod m */ |
| if (!ibmca_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 ibmca_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a, |
| const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, |
| BN_MONT_CTX *m_ctx) |
| { |
| return ibmca_mod_exp(r, a, p, m, ctx); |
| } |
| # endif |
| |
| /* This function is aliased to mod_exp (with the mont stuff dropped). */ |
| static int ibmca_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *m, BN_CTX *ctx, |
| BN_MONT_CTX *m_ctx) |
| { |
| return ibmca_mod_exp(r, a, p, m, ctx); |
| } |
| |
| # ifndef OPENSSL_NO_DH |
| /* This function is aliased to mod_exp (with the dh and mont dropped). */ |
| static int ibmca_mod_exp_dh(DH const *dh, BIGNUM *r, |
| const BIGNUM *a, const BIGNUM *p, |
| const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx) |
| { |
| return ibmca_mod_exp(r, a, p, m, ctx); |
| } |
| # endif |
| |
| /* Random bytes are good */ |
| static int ibmca_rand_bytes(unsigned char *buf, int num) |
| { |
| int to_return = 0; /* assume failure */ |
| unsigned int ret; |
| |
| if (handle == 0) { |
| IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_NOT_INITIALISED); |
| goto err; |
| } |
| |
| ret = p_icaRandomNumberGenerate(handle, num, buf); |
| if (ret < 0) { |
| IBMCAerr(IBMCA_F_IBMCA_RAND_BYTES, IBMCA_R_REQUEST_FAILED); |
| goto err; |
| } |
| to_return = 1; |
| err: |
| return to_return; |
| } |
| |
| static int ibmca_rand_status(void) |
| { |
| return 1; |
| } |
| |
| /* |
| * 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_ibmca_id) != 0)) /* WJH XXX */ |
| 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_IBMCA */ |
| #endif /* !OPENSSL_NO_HW */ |
