/* 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 #include #include #include #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 . 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 */