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qat_rsa.c
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/* ====================================================================
*
*
* BSD LICENSE
*
* Copyright(c) 2016-2018 Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER OR 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.
*
*
* ====================================================================
*/
/*****************************************************************************
* @file qat_rsa.c
*
* This file contains the engine implementations for RSA operations
*
*****************************************************************************/
/* macros defined to allow use of the cpu get and set affinity functions */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#define __USE_GNU
#include <pthread.h>
#include <openssl/rsa.h>
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
#include <openssl/async.h>
#endif
#include <openssl/err.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#ifdef USE_QAT_CONTIG_MEM
# include "qae_mem_utils.h"
#endif
#ifdef USE_QAE_MEM
# include "cmn_mem_drv_inf.h"
#endif
#include "qat_utils.h"
#include "e_qat.h"
#include "qat_callback.h"
#include "qat_polling.h"
#include "qat_events.h"
#include "cpa.h"
#include "cpa_types.h"
#include "cpa_cy_rsa.h"
#include "cpa_cy_ln.h"
#include "qat_rsa.h"
#include "qat_rsa_aux.h"
#include "qat_asym_common.h"
#include "e_qat_err.h"
#include "icp_sal_poll.h"
#include "qat_rsa_crt.h"
#ifdef OPENSSL_ENABLE_QAT_RSA
# ifdef OPENSSL_DISABLE_QAT_RSA
# undef OPENSSL_DISABLE_QAT_RSA
# endif
#endif
/* To specify the RSA op sizes supported by QAT engine */
#define RSA_QAT_RANGE_MIN 512
#define RSA_QAT_RANGE_MAX 4096
#define NO_PADDING 0
#define PADDING 1
#ifndef OPENSSL_DISABLE_QAT_RSA
/* Qat engine RSA methods declaration */
static int qat_rsa_priv_enc(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int qat_rsa_priv_dec(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int qat_rsa_pub_enc(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int qat_rsa_pub_dec(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int qat_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx);
static int qat_bn_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
#endif
static RSA_METHOD *qat_rsa_method = NULL;
RSA_METHOD *qat_get_RSA_methods(void)
{
#ifndef OPENSSL_DISABLE_QAT_RSA
int res = 1;
#endif
if (qat_rsa_method != NULL)
return qat_rsa_method;
#ifndef OPENSSL_DISABLE_QAT_RSA
if ((qat_rsa_method = RSA_meth_new("QAT RSA method", 0)) == NULL) {
WARN("Failed to allocate QAT RSA methods\n");
QATerr(QAT_F_QAT_GET_RSA_METHODS, QAT_R_ALLOC_QAT_RSA_METH_FAILURE);
return NULL;
}
res &= RSA_meth_set_pub_enc(qat_rsa_method, qat_rsa_pub_enc);
res &= RSA_meth_set_pub_dec(qat_rsa_method, qat_rsa_pub_dec);
res &= RSA_meth_set_priv_enc(qat_rsa_method, qat_rsa_priv_enc);
res &= RSA_meth_set_priv_dec(qat_rsa_method, qat_rsa_priv_dec);
res &= RSA_meth_set_mod_exp(qat_rsa_method, qat_rsa_mod_exp);
res &= RSA_meth_set_bn_mod_exp(qat_rsa_method, qat_bn_mod_exp);
if (res == 0) {
WARN("Failed to set QAT RSA methods\n");
QATerr(QAT_F_QAT_GET_RSA_METHODS, QAT_R_SET_QAT_RSA_METH_FAILURE);
return NULL;
}
#else
qat_rsa_method = (RSA_METHOD *)RSA_get_default_method();
#endif
return qat_rsa_method;
}
void qat_free_RSA_methods(void)
{
#ifndef OPENSSL_DISABLE_QAT_RSA
if (qat_rsa_method != NULL) {
RSA_meth_free(qat_rsa_method);
qat_rsa_method = NULL;
} else {
WARN("qat_rsa_method is NULL\n");
QATerr(QAT_F_QAT_FREE_RSA_METHODS, QAT_R_FREE_QAT_RSA_METH_FAILURE);
}
#endif
}
#ifndef OPENSSL_DISABLE_QAT_RSA
/*
* The RSA range check is performed so that if the op sizes are not in the
* range supported by QAT engine then fall back to software
*/
static inline int qat_rsa_range_check(int plen)
{
return ((plen >= RSA_QAT_RANGE_MIN) && (plen <= RSA_QAT_RANGE_MAX));
}
/******************************************************************************
* function:
* qat_rsaCallbackFn(void *pCallbackTag, CpaStatus status,
* void *pOpData, CpaFlatBuffer * pOut)
*
* @param pCallbackTag [IN] - Opaque User Data for this specific call. Will
* be returned unchanged in the callback.
* @param status [IN] - Status result of the RSA operation.
* @param pOpData [IN] - Structure containing all the data needed to
* perform the RSA encryption operation.
* @param pOut [IN] - Pointer to buffer into which the result of
* the RSA encryption is written.
* description:
* Callback function used by RSA operations to indicate completion.
* Calls back to qat_crypto_callbackFn() as functionally it does the same.
*
******************************************************************************/
static void qat_rsaCallbackFn(void *pCallbackTag, CpaStatus status, void *pOpData,
CpaFlatBuffer * pOut)
{
if (enable_heuristic_polling) {
QAT_ATOMIC_DEC(num_asym_requests_in_flight);
}
qat_crypto_callbackFn(pCallbackTag, status, CPA_CY_SYM_OP_CIPHER, pOpData,
NULL, CPA_TRUE);
}
static void
rsa_decrypt_op_buf_free(CpaCyRsaDecryptOpData * dec_op_data,
CpaFlatBuffer * out_buf)
{
CpaCyRsaPrivateKeyRep2 *key = NULL;
DEBUG("- Started\n");
if (dec_op_data) {
if (dec_op_data->inputData.pData)
qaeCryptoMemFree(dec_op_data->inputData.pData);
if (dec_op_data->pRecipientPrivateKey) {
key = &dec_op_data->pRecipientPrivateKey->privateKeyRep2;
QAT_CHK_CLNSE_QMFREE_FLATBUFF(key->prime1P);
QAT_CHK_CLNSE_QMFREE_FLATBUFF(key->prime2Q);
QAT_CHK_CLNSE_QMFREE_FLATBUFF(key->exponent1Dp);
QAT_CHK_CLNSE_QMFREE_FLATBUFF(key->exponent2Dq);
QAT_CHK_CLNSE_QMFREE_FLATBUFF(key->coefficientQInv);
OPENSSL_free(dec_op_data->pRecipientPrivateKey);
}
OPENSSL_free(dec_op_data);
}
if (out_buf) {
if (out_buf->pData)
qaeCryptoMemFree(out_buf->pData);
OPENSSL_free(out_buf);
}
DEBUG("- Finished\n");
}
static int qat_rsa_decrypt(CpaCyRsaDecryptOpData * dec_op_data, int rsa_len,
CpaFlatBuffer * output_buf)
{
/* Used for RSA Decrypt and RSA Sign */
op_done_t op_done;
CpaStatus sts = CPA_STATUS_FAIL;
int inst_num = QAT_INVALID_INSTANCE;
int job_ret = 0;
int sync_mode_ret = 0;
thread_local_variables_t *tlv = NULL;
DEBUG("- Started\n");
tlv = qat_check_create_local_variables();
if (NULL == tlv) {
WARN("could not create local variables\n");
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
return 0;
}
QAT_INC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (qat_use_signals()) {
if (tlv->localOpsInFlight == 1) {
if (pthread_kill(timer_poll_func_thread, SIGUSR1) != 0) {
WARN("pthread_kill error\n");
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
}
}
qat_init_op_done(&op_done);
if (op_done.job != NULL) {
if (qat_setup_async_event_notification(0) == 0) {
WARN("Failed to setup async event notifications\n");
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
} else {
/*
* Sync mode
*/
qat_cleanup_op_done(&op_done);
sync_mode_ret = qat_rsa_decrypt_CRT(dec_op_data, rsa_len, output_buf);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return sync_mode_ret;
}
/*
* cpaCyRsaDecrypt() is the function called for RSA Sign in the API.
* For that particular case the dec_op_data [IN] contains both the
* private key value and the message (hash) value. The output_buf [OUT]
* stores the signature as the output once the request is fully completed.
* The sts return value contains 0 (CPA_STATUS_SUCCESS) if the request
* was successfully submitted.
*/
CRYPTO_QAT_LOG("- RSA\n");
do {
if ((inst_num = get_next_inst_num()) == QAT_INVALID_INSTANCE) {
WARN("Failed to get an instance\n");
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
qat_clear_async_event_notification();
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
DUMP_RSA_DECRYPT(qat_instance_handles[inst_num], &op_done, dec_op_data, output_buf);
sts = cpaCyRsaDecrypt(qat_instance_handles[inst_num], qat_rsaCallbackFn, &op_done,
dec_op_data, output_buf);
if (sts == CPA_STATUS_RETRY) {
if ((qat_wake_job(op_done.job, 0) == 0) ||
(qat_pause_job(op_done.job, 0) == 0)) {
WARN("qat_wake_job or qat_pause_job failed\n");
break;
}
}
}
while (sts == CPA_STATUS_RETRY);
if (sts != CPA_STATUS_SUCCESS) {
WARN("Failed to submit request to qat - status = %d\n", sts);
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
qat_clear_async_event_notification();
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
if (enable_heuristic_polling) {
QAT_ATOMIC_INC(num_asym_requests_in_flight);
}
do {
/* If we get a failure on qat_pause_job then we will
not flag an error here and quit because we have
an asynchronous request in flight.
We don't want to start cleaning up data
structures that are still being used. If
qat_pause_job fails we will just yield and
loop around and try again until the request
completes and we can continue. */
if ((job_ret = qat_pause_job(op_done.job, 0)) == 0)
pthread_yield();
}
while (!op_done.flag ||
QAT_CHK_JOB_RESUMED_UNEXPECTEDLY(job_ret));
DUMP_RSA_DECRYPT_OUTPUT(output_buf);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (op_done.verifyResult != CPA_TRUE) {
qat_cleanup_op_done(&op_done);
WARN("Verification of result failed\n");
QATerr(QAT_F_QAT_RSA_DECRYPT, ERR_R_INTERNAL_ERROR);
return 0;
}
qat_cleanup_op_done(&op_done);
DEBUG("- Finished\n");
return 1;
}
static int
build_decrypt_op_buf(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding,
CpaCyRsaDecryptOpData ** dec_op_data,
CpaFlatBuffer ** output_buffer, int alloc_pad)
{
int rsa_len = 0;
int padding_result = 0;
CpaCyRsaPrivateKey *cpa_prv_key = NULL;
const BIGNUM *p = NULL;
const BIGNUM *q = NULL;
const BIGNUM *dmp1 = NULL;
const BIGNUM *dmq1 = NULL;
const BIGNUM *iqmp = NULL;
DEBUG("- Started\n");
RSA_get0_factors((const RSA*)rsa, &p, &q);
RSA_get0_crt_params((const RSA*)rsa, &dmp1, &dmq1, &iqmp);
if (p == NULL || q == NULL || dmp1 == NULL || dmq1 == NULL || iqmp == NULL) {
WARN("Either p %p, q %p, dmp1 %p, dmq1 %p, iqmp %p are NULL\n",
p, q, dmp1, dmq1, iqmp);
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_P_Q_DMP_DMQ_IQMP_NULL);
return 0;
}
DEBUG("flen = %d, padding = %d \n", flen, padding);
/* output signature should have same length as the RSA size */
rsa_len = RSA_size(rsa);
/* Padding check */
if ((padding != RSA_NO_PADDING) &&
(padding != RSA_PKCS1_PADDING) &&
(padding != RSA_PKCS1_OAEP_PADDING) &&
(padding != RSA_SSLV23_PADDING) &&
(padding != RSA_X931_PADDING)) {
WARN("Unknown Padding %d\n", padding);
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_PADDING_UNKNOWN);
return 0;
}
cpa_prv_key =
(CpaCyRsaPrivateKey *) OPENSSL_zalloc(sizeof(CpaCyRsaPrivateKey));
if (NULL == cpa_prv_key) {
WARN("Failed to allocate cpa_prv_key\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_PRIV_KEY_MALLOC_FAILURE);
return 0;
}
/* output and input data MUST allocate memory for sign process */
/* memory allocation for DecOpdata[IN] */
*dec_op_data = OPENSSL_zalloc(sizeof(CpaCyRsaDecryptOpData));
if (NULL == *dec_op_data) {
WARN("Failed to allocate dec_op_data\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_DEC_OP_DATA_MALLOC_FAILURE);
OPENSSL_free(cpa_prv_key);
return 0;
}
/* Setup the DecOpData structure */
(*dec_op_data)->pRecipientPrivateKey = cpa_prv_key;
cpa_prv_key->version = CPA_CY_RSA_VERSION_TWO_PRIME;
/* Setup the private key rep type 2 structure */
cpa_prv_key->privateKeyRepType = CPA_CY_RSA_PRIVATE_KEY_REP_TYPE_2;
if (qat_BN_to_FB(&cpa_prv_key->privateKeyRep2.prime1P, p) != 1 ||
qat_BN_to_FB(&cpa_prv_key->privateKeyRep2.prime2Q, q) != 1 ||
qat_BN_to_FB(&cpa_prv_key->privateKeyRep2.exponent1Dp, dmp1) != 1 ||
qat_BN_to_FB(&cpa_prv_key->privateKeyRep2.exponent2Dq, dmq1) != 1 ||
qat_BN_to_FB(&cpa_prv_key->privateKeyRep2.coefficientQInv, iqmp) != 1) {
WARN("Failed to convert privateKeyRep2 elements to flatbuffer\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_P_Q_DMP_DMQ_CONVERT_TO_FB_FAILURE);
return 0;
}
(*dec_op_data)->inputData.pData = (Cpa8U *) qaeCryptoMemAlloc(
((padding != RSA_NO_PADDING) && alloc_pad) ? rsa_len : flen,
__FILE__,
__LINE__);
if (NULL == (*dec_op_data)->inputData.pData) {
WARN("Failed to allocate (*dec_op_data)->inputData.pData\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_INPUT_DATA_MALLOC_FAILURE);
return 0;
}
(*dec_op_data)->inputData.dataLenInBytes =
(padding != RSA_NO_PADDING) && alloc_pad ? rsa_len : flen;
if (alloc_pad) {
switch (padding) {
case RSA_PKCS1_PADDING:
padding_result =
RSA_padding_add_PKCS1_type_1((*dec_op_data)->inputData.pData,
rsa_len, from, flen);
break;
case RSA_X931_PADDING:
padding_result =
RSA_padding_add_X931((*dec_op_data)->inputData.pData,
rsa_len, from, flen);
break;
case RSA_NO_PADDING:
padding_result =
RSA_padding_add_none((*dec_op_data)->inputData.pData,
rsa_len, from, flen);
break;
default:
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, RSA_R_UNKNOWN_PADDING_TYPE);
break;
}
} else {
padding_result =
RSA_padding_add_none((*dec_op_data)->inputData.pData,
rsa_len, from, flen);
}
if (padding_result <= 0) {
WARN("Failed to add padding\n");
/* Error is raised within the padding function. */
return 0;
}
*output_buffer = OPENSSL_malloc(sizeof(CpaFlatBuffer));
if (NULL == *output_buffer) {
WARN("Failed to allocate output_buffer\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_OUTPUT_BUF_MALLOC_FAILURE);
return 0;
}
/*
* Memory allocation for DecOpdata[IN] the size of outputBuffer
* should big enough to contain RSA_size
*/
(*output_buffer)->pData =
(Cpa8U *) qaeCryptoMemAlloc(rsa_len, __FILE__, __LINE__);
if (NULL == (*output_buffer)->pData) {
WARN("Failed to allocate output_buffer->pData\n");
QATerr(QAT_F_BUILD_DECRYPT_OP_BUF, QAT_R_RSA_OUTPUT_BUF_PDATA_MALLOC_FAILURE);
return 0;
}
(*output_buffer)->dataLenInBytes = rsa_len;
DEBUG("- Finished\n");
return 1;
}
static void
rsa_encrypt_op_buf_free(CpaCyRsaEncryptOpData * enc_op_data,
CpaFlatBuffer * out_buf)
{
DEBUG("- Started\n");
if (enc_op_data) {
if (enc_op_data->pPublicKey) {
if (enc_op_data->pPublicKey->modulusN.pData)
qaeCryptoMemFree(enc_op_data->pPublicKey->modulusN.pData);
if (enc_op_data->pPublicKey->publicExponentE.pData)
qaeCryptoMemFree(enc_op_data->pPublicKey->
publicExponentE.pData);
OPENSSL_free(enc_op_data->pPublicKey);
}
if (enc_op_data->inputData.pData)
qaeCryptoMemFree(enc_op_data->inputData.pData);
OPENSSL_free(enc_op_data);
}
if (out_buf) {
if (out_buf->pData)
qaeCryptoMemFree(out_buf->pData);
OPENSSL_free(out_buf);
}
DEBUG("- Finished\n");
}
static int qat_rsa_encrypt(CpaCyRsaEncryptOpData * enc_op_data,
CpaFlatBuffer * output_buf)
{
/* Used for RSA Encrypt and RSA Verify */
op_done_t op_done;
CpaStatus sts = CPA_STATUS_FAIL;
int qatPerformOpRetries = 0;
int inst_num = QAT_INVALID_INSTANCE;
int job_ret = 0;
thread_local_variables_t *tlv = NULL;
int iMsgRetry = getQatMsgRetryCount();
useconds_t ulPollInterval = getQatPollInterval();
DEBUG("- Started\n");
tlv = qat_check_create_local_variables();
if (NULL == tlv) {
WARN("could not create local variables\n");
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
return 0;
}
QAT_INC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (qat_use_signals()) {
if (tlv->localOpsInFlight == 1) {
if (pthread_kill(timer_poll_func_thread, SIGUSR1) != 0) {
WARN("pthread_kill error\n");
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
}
}
qat_init_op_done(&op_done);
if (op_done.job != NULL) {
if (qat_setup_async_event_notification(0) == 0) {
WARN("Failed to setup async event notification\n");
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
}
/*
* cpaCyRsaEncrypt() is the function called for RSA verify in the API.
* For that particular case the enc_op_data [IN] contains both the
* public key value and the signature value. The output_buf [OUT]
* stores the message as the output once the request is fully completed.
* The sts return value contains 0 (CPA_STATUS_SUCCESS) if the request
* was successfully submitted.
*/
CRYPTO_QAT_LOG("RSA - %s\n", __func__);
do {
if ((inst_num = get_next_inst_num()) == QAT_INVALID_INSTANCE) {
WARN("Failed to get an instance\n");
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
if (op_done.job != NULL) {
qat_clear_async_event_notification();
}
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
DUMP_RSA_ENCRYPT(qat_instance_handles[inst_num], &op_done, enc_op_data, output_buf);
sts = cpaCyRsaEncrypt(qat_instance_handles[inst_num], qat_rsaCallbackFn, &op_done,
enc_op_data, output_buf);
if (sts == CPA_STATUS_RETRY) {
if (op_done.job == NULL) {
usleep(ulPollInterval +
(qatPerformOpRetries % QAT_RETRY_BACKOFF_MODULO_DIVISOR));
qatPerformOpRetries++;
if (iMsgRetry != QAT_INFINITE_MAX_NUM_RETRIES) {
if (qatPerformOpRetries >= iMsgRetry) {
WARN("No. of retries exceeded max retry : %d\n", iMsgRetry);
break;
}
}
} else {
if ((qat_wake_job(op_done.job, 0) == 0) ||
(qat_pause_job(op_done.job, 0) == 0)) {
WARN("qat_wake_job or qat_pause_job failed\n");
break;
}
}
}
}
while (sts == CPA_STATUS_RETRY);
if (sts != CPA_STATUS_SUCCESS) {
WARN("Failed to submit request to qat - status = %d\n", sts);
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
if (op_done.job != NULL) {
qat_clear_async_event_notification();
}
qat_cleanup_op_done(&op_done);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
return 0;
}
if (enable_heuristic_polling) {
QAT_ATOMIC_INC(num_asym_requests_in_flight);
}
do {
if(op_done.job != NULL) {
/* If we get a failure on qat_pause_job then we will
not flag an error here and quit because we have
an asynchronous request in flight.
We don't want to start cleaning up data
structures that are still being used. If
qat_pause_job fails we will just yield and
loop around and try again until the request
completes and we can continue. */
if ((job_ret = qat_pause_job(op_done.job, 0)) == 0)
pthread_yield();
} else {
if(getEnableInlinePolling()) {
icp_sal_CyPollInstance(qat_instance_handles[inst_num], 0);
} else {
pthread_yield();
}
}
} while (!op_done.flag ||
QAT_CHK_JOB_RESUMED_UNEXPECTEDLY(job_ret));
DUMP_RSA_ENCRYPT_OUTPUT(output_buf);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (op_done.verifyResult != CPA_TRUE) {
qat_cleanup_op_done(&op_done);
WARN("Verification of result failed\n");
QATerr(QAT_F_QAT_RSA_ENCRYPT, ERR_R_INTERNAL_ERROR);
return 0;
}
qat_cleanup_op_done(&op_done);
return 1;
}
static int
build_encrypt_op_buf(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding,
CpaCyRsaEncryptOpData ** enc_op_data,
CpaFlatBuffer ** output_buffer, int alloc_pad)
{
CpaCyRsaPublicKey *cpa_pub_key = NULL;
int rsa_len = 0;
int padding_result = 0;
const BIGNUM *n = NULL;
const BIGNUM *e = NULL;
const BIGNUM *d = NULL;
DEBUG("- Started\n");
RSA_get0_key((const RSA*)rsa, &n, &e, &d);
/* Note: not checking 'd' as it is not used */
if (n == NULL || e == NULL) {
WARN("RSA key values n = %p or e = %p are NULL\n", n, e);
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_N_E_NULL);
return 0;
}
DEBUG("flen =%d, padding = %d \n", flen, padding);
rsa_len = RSA_size(rsa);
if ((padding != RSA_NO_PADDING) &&
(padding != RSA_PKCS1_PADDING) &&
(padding != RSA_PKCS1_OAEP_PADDING) &&
(padding != RSA_X931_PADDING) &&
(padding != RSA_SSLV23_PADDING)) {
WARN("Unknown Padding %d\n", padding);
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_UNKNOWN_PADDING);
return 0;
}
cpa_pub_key = OPENSSL_zalloc(sizeof(CpaCyRsaPublicKey));
if (NULL == cpa_pub_key) {
WARN("Public Key zalloc failed\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_PUB_KEY_MALLOC_FAILURE);
return 0;
}
/* Output and input data MUST allocate memory for RSA verify process */
/* Memory allocation for EncOpData[IN] */
*enc_op_data = OPENSSL_zalloc(sizeof(CpaCyRsaEncryptOpData));
if (NULL == *enc_op_data) {
WARN("Failed to allocate enc_op_data\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_ENC_OP_DATA_MALLOC_FAILURE);
OPENSSL_free(cpa_pub_key);
return 0;
}
/* Setup the Encrypt operation Data structure */
(*enc_op_data)->pPublicKey = cpa_pub_key;
/* Passing Public key from big number format to big endian order binary */
if (qat_BN_to_FB(&cpa_pub_key->modulusN, n) != 1 ||
qat_BN_to_FB(&cpa_pub_key->publicExponentE, e) != 1) {
WARN("Failed to convert cpa_pub_key elements to flatbuffer\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_N_E_CONVERT_TO_FB_FAILURE);
return 0;
}
(*enc_op_data)->inputData.pData = (Cpa8U *) qaeCryptoMemAlloc(
((padding != RSA_NO_PADDING) && alloc_pad) ? rsa_len : flen,
__FILE__,
__LINE__);
if (NULL == (*enc_op_data)->inputData.pData) {
WARN("Failed to allocate (*enc_op_data)->inputData.pData\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_INPUT_DATA_MALLOC_FAILURE);
return 0;
}
(*enc_op_data)->inputData.dataLenInBytes =
((padding != RSA_NO_PADDING) && alloc_pad) ? rsa_len : flen;
if (alloc_pad) {
switch (padding) {
case RSA_PKCS1_PADDING:
padding_result =
RSA_padding_add_PKCS1_type_2((*enc_op_data)->inputData.pData,
rsa_len, from, flen);
break;
case RSA_PKCS1_OAEP_PADDING:
padding_result =
RSA_padding_add_PKCS1_OAEP((*enc_op_data)->inputData.pData,
rsa_len, from, flen, NULL, 0);
break;
case RSA_SSLV23_PADDING:
padding_result =
RSA_padding_add_SSLv23((*enc_op_data)->inputData.pData,
rsa_len, from, flen);
break;
case RSA_NO_PADDING:
padding_result =
RSA_padding_add_none((*enc_op_data)->inputData.pData,
rsa_len, from, flen);
break;
default:
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, RSA_R_UNKNOWN_PADDING_TYPE);
break;
}
} else {
padding_result =
RSA_padding_add_none((*enc_op_data)->inputData.pData,
rsa_len, from, flen);
}
if (padding_result <= 0) {
WARN("Failed to add padding\n");
/* Error is raised within the padding function. */
return 0;
}
/*
* Memory allocation for outputBuffer[OUT] OutputBuffer size initialize
* as the size of rsa size
*/
(*output_buffer) =
(CpaFlatBuffer *) OPENSSL_malloc(sizeof(CpaFlatBuffer));
if (NULL == (*output_buffer)) {
WARN("Failed to allocate output_buffer\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_OUTPUT_BUF_MALLOC_FAILURE);
return 0;
}
/*
* outputBuffer size should large enough to hold the Hash value but
* smaller than (RSA_size(rsa)-11)
*/
(*output_buffer)->dataLenInBytes = rsa_len;
(*output_buffer)->pData = qaeCryptoMemAlloc(rsa_len, __FILE__, __LINE__);
if (NULL == (*output_buffer)->pData) {
WARN("Failed to allocate (*output_buffer)->pData\n");
QATerr(QAT_F_BUILD_ENCRYPT_OP_BUF, QAT_R_OUTPUT_BUF_PDATA_MALLOC_FAILURE);
return 0;;
}
DEBUG("- Finished\n");
return 1;
}
/******************************************************************************
* function:
* qat_rsa_priv_enc (int flen,
* const unsigned char *from,
* unsigned char *to,
* RSA *rsa,
* int padding)
*
* @param flen [IN] - length in bytes of input file
* @param from [IN] - pointer to the input file
* @param to [OUT] - pointer to output signature
* @param rsa [IN] - pointer to private key structure
* @param padding [IN] - Padding scheme
*
* description: Perform an RSA private encrypt (RSA Sign)
* We use the decrypt implementation to achieve this.
******************************************************************************/
int
qat_rsa_priv_enc(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
int rsa_len = 0;
CpaCyRsaDecryptOpData *dec_op_data = NULL;
CpaFlatBuffer *output_buffer = NULL;
int sts = 1;
#ifndef OPENSSL_DISABLE_QAT_LENSTRA_PROTECTION
unsigned char *ver_msg = NULL;
const BIGNUM *n = NULL;
const BIGNUM *e = NULL;
const BIGNUM *d = NULL;
#endif
DEBUG("- Started.\n");
/* Parameter Checking */
/*
* The input message length should be less than or equal to RSA size and also have
* minimum space of at least 11 bytes of padding if using PKCS1 padding.
*/
if (rsa == NULL || from == NULL || to == NULL || flen == 0) {
WARN("RSA key, input or output is NULL or invalid length, \
flen = %d\n", flen);
QATerr(QAT_F_QAT_RSA_PRIV_ENC, QAT_R_RSA_FROM_TO_NULL);
goto exit;
}
rsa_len = RSA_size(rsa);
/*
* If the op sizes are not in the range supported by QAT engine then fall
* back to software
*/
if (!qat_rsa_range_check(RSA_bits((const RSA*)rsa)))
return RSA_meth_get_priv_enc(RSA_PKCS1_OpenSSL())
(flen, from, to, rsa, padding);
if (1 != build_decrypt_op_buf(flen, from, to, rsa, padding,
&dec_op_data, &output_buffer, PADDING)) {
WARN("Failure in build_decrypt_op_buf\n");
/* Errors are already raised within build_decrypt_op_buf. */
sts = 0;
goto exit;
}
if (1 != qat_rsa_decrypt(dec_op_data, rsa_len, output_buffer)) {
WARN("Failure in qat_rsa_decrypt\n");
/* Errors are already raised within qat_rsa_decrypt. */
sts = 0;
goto exit;
}
memcpy(to, output_buffer->pData, rsa_len);
rsa_decrypt_op_buf_free(dec_op_data, output_buffer);
#ifndef OPENSSL_DISABLE_QAT_LENSTRA_PROTECTION
/* Lenstra vulnerability protection: Now call the s/w impl'n of public decrypt in order to
verify the sign operation just carried out (cpaCyRsaDecrypt). */
RSA_get0_key((const RSA*)rsa, &n, &e, &d);
/* Note: not checking 'd' as it is not used */
if (e != NULL) { /* then a public key exists and we can effect Lenstra attack protection*/
ver_msg = OPENSSL_zalloc(flen);
if (ver_msg == NULL) {
WARN("ver_msg zalloc failed.\n");
QATerr(QAT_F_QAT_RSA_PRIV_ENC, ERR_R_MALLOC_FAILURE);
sts = 0;
goto exit_lenstra;
}
if ((RSA_meth_get_pub_dec(RSA_PKCS1_OpenSSL())
(rsa_len, (const unsigned char *)to, ver_msg, rsa, padding) <= 0)
|| (CRYPTO_memcmp(from, ver_msg, flen) != 0)) {
WARN("- Verify failed - redoing sign operation in s/w\n");
OPENSSL_free(ver_msg);
return RSA_meth_get_priv_enc(RSA_PKCS1_OpenSSL())(flen, from, to, rsa, padding);
}
OPENSSL_free(ver_msg);
}
#endif
DEBUG("- Finished\n");
return rsa_len;
exit:
/* Free all the memory allocated in this function */
rsa_decrypt_op_buf_free(dec_op_data, output_buffer);
#ifndef OPENSSL_DISABLE_QAT_LENSTRA_PROTECTION
exit_lenstra:
#endif
/* set output all 0xff if failed */
if (!sts)
memset(to, 0xff, rsa_len);
/* Return an error */
return 0;
}
/******************************************************************************
* function:
* qat_rsa_priv_dec(int flen,
* const unsigned char *from,
* unsigned char *to,
* RSA * rsa,
* int padding)
*
* @param flen [IN] - length in bytes of input
* @param from [IN] - pointer to the input
* @param to [OUT] - pointer to output
* @param rsa [IN] - pointer to the private key structure
* @param padding [IN] - Padding scheme
*
* description:
* description: Perform an RSA private decrypt. (RSA Decrypt)
******************************************************************************/
int qat_rsa_priv_dec(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
{
int rsa_len = 0;
int output_len = -1;
int sts = 1;
CpaCyRsaDecryptOpData *dec_op_data = NULL;
CpaFlatBuffer *output_buffer = NULL;
#ifndef OPENSSL_DISABLE_QAT_LENSTRA_PROTECTION
unsigned char *ver_msg = NULL;
const BIGNUM *n = NULL;
const BIGNUM *e = NULL;
const BIGNUM *d = NULL;
#endif
DEBUG("- Started.\n");
/* parameter checks */
if (rsa == NULL || from == NULL || to == NULL ||
(flen != (rsa_len = RSA_size(rsa)))) {
WARN("RSA key, input or output is NULL or invalid length, \
flen = %d, rsa_len = %d\n", flen, rsa_len);
QATerr(QAT_F_QAT_RSA_PRIV_DEC, QAT_R_RSA_FROM_TO_NULL);
return 0;
}
/*
* If the op sizes are not in the range supported by QAT engine then fall
* back to software
*/
if (!qat_rsa_range_check(RSA_bits((const RSA*)rsa)))
return RSA_meth_get_priv_dec(RSA_PKCS1_OpenSSL())
(flen, from, to, rsa, padding);
if (1 != build_decrypt_op_buf(flen, from, to, rsa, padding,
&dec_op_data, &output_buffer, NO_PADDING)) {
WARN("Failure in build_decrypt_op_buf\n");
/* Errors are already raised within build_decrypt_op_buf. */
sts = 0;
goto exit;
}