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qat_hw_gcm.c
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qat_hw_gcm.c
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/* ====================================================================
*
*
* BSD LICENSE
*
* Copyright(c) 2020-2022 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_hw_gcm.c
*
* This file contains the engine implementations for GCM cipher operations
*
*****************************************************************************/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <string.h>
#include <pthread.h>
#include <signal.h>
#ifdef USE_QAT_CONTIG_MEM
# include "qae_mem_utils.h"
#endif
#ifdef USE_USDM_MEM
# include "qat_hw_usdm_inf.h"
#endif
#include "e_qat.h"
#include "qat_utils.h"
#include "qat_hw_callback.h"
#include "qat_hw_polling.h"
#include "qat_events.h"
#include "cpa.h"
#include "cpa_types.h"
#include "cpa_cy_sym.h"
#include "qat_evp.h"
#include "qat_hw_gcm.h"
#include "qat_hw_ciphers.h"
#include <openssl/evp.h>
#include <openssl/aes.h>
#include <openssl/err.h>
#include <openssl/sha.h>
#include <openssl/tls1.h>
#include <openssl/async.h>
#include <openssl/ssl.h>
#ifdef QAT_OPENSSL_PROVIDER
#include "qat_prov_ciphers.h"
#endif
#ifdef ENABLE_QAT_HW_GCM
# ifdef DISABLE_QAT_HW_GCM
# undef DISABLE_QAT_HW_GCM
# endif
#endif
#ifdef ENABLE_QAT_HW_GCM
/******************************************************************************
* function:
* qat_session_data_init(EVP_CIPHER_CTX *ctx,
* qat_aes_gcm_ctx *qctx,
* const unsigned char* key,
* int keylen,
* const unsigned char* iv,
* int ivlen,
* int enc)
*
* @param ctx [IN] - pointer to the evp context
* @param qctx [IN] - pointer to the qat context
* @param key [IN] - pointer to the cipher key
* @param iv [IN] - pointer to the iv this maybe NULL.
* @param enc [IN] - whether we are doing encryption (1) or decryption (0).
*
* description:
* This function is to create QAT specific session data.
* It is called from the function qat_aes_gcm_init().
*
* It will return 1 if successful and 0 on failure.
******************************************************************************/
#ifdef QAT_OPENSSL_PROVIDER
static int qat_session_data_init(EVP_CIPHER_CTX *ctx,
void *vctx,
const unsigned char* key,
int keylen,
const unsigned char* iv,
int ivlen,
int enc)
#else
static int qat_session_data_init(EVP_CIPHER_CTX *ctx,
qat_gcm_ctx *qctx,
const unsigned char* key,
const unsigned char* iv,
int enc)
#endif
{
#ifdef QAT_OPENSSL_PROVIDER
QAT_GCM_CTX *qctx = (QAT_GCM_CTX *)vctx;
#endif
DEBUG("QAT HW GCM Started\n");
if (NULL == qctx || NULL == ctx) {
WARN("qctx or ctx is NULL\n");
QATerr(QAT_F_QAT_SESSION_DATA_INIT, QAT_R_QCTX_CTX_NULL);
return 0;
}
if (key != NULL) {
if (qctx->cipher_key) {
qaeCryptoMemFreeNonZero(qctx->cipher_key);
qctx->cipher_key = NULL;
}
#ifdef QAT_OPENSSL_PROVIDER
qctx->cipher_key = qaeCryptoMemAlloc(keylen, __FILE__, __LINE__);
#else
qctx->cipher_key = qaeCryptoMemAlloc(EVP_CIPHER_CTX_key_length(ctx), __FILE__, __LINE__);
#endif
if (qctx->cipher_key == NULL) {
WARN("Unable to allocate memory for qctx->cipher_key.\n");
QATerr(QAT_F_QAT_SESSION_DATA_INIT, QAT_R_KEY_MALLOC_FAILURE);
return 0;
}
#ifdef QAT_OPENSSL_PROVIDER
memcpy(qctx->cipher_key, key, keylen);
#else
memcpy(qctx->cipher_key, key, EVP_CIPHER_CTX_key_length(ctx));
#endif
qctx->key_set = 1;
}
if (iv != NULL && qctx->iv_set) {
qctx->OpData.pIv = qctx->iv;
qctx->OpData.ivLenInBytes = qctx->iv_len;
}
qctx->session_data = OPENSSL_zalloc(sizeof(CpaCySymSessionSetupData));
if (NULL == qctx->session_data) {
WARN("session setup data zalloc failure\n");
QATerr(QAT_F_QAT_SESSION_DATA_INIT, QAT_R_SSD_MALLOC_FAILURE);
return 0;
}
/* Set priority and operation of this session */
qctx->session_data->sessionPriority = CPA_CY_PRIORITY_HIGH;
qctx->session_data->symOperation = CPA_CY_SYM_OP_ALGORITHM_CHAINING;
/* --- Cipher configuration --- */
/* Cipher algorithm and mode */
qctx->session_data->cipherSetupData.cipherAlgorithm =
CPA_CY_SYM_CIPHER_AES_GCM;
/* Cipher key length */
#ifdef QAT_OPENSSL_PROVIDER
qctx->session_data->cipherSetupData.cipherKeyLenInBytes = (Cpa32U)keylen;
#else
qctx->session_data->cipherSetupData.cipherKeyLenInBytes = (Cpa32U)EVP_CIPHER_CTX_key_length(ctx);
#endif
if (qctx->key_set)
qctx->session_data->cipherSetupData.pCipherKey = (Cpa8U *)qctx->cipher_key;
/* Operation to perform */
if (enc) {
qctx->session_data->cipherSetupData.cipherDirection =
CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT;
qctx->session_data->algChainOrder =
CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH;
} else {
qctx->session_data->cipherSetupData.cipherDirection =
CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT;
qctx->session_data->algChainOrder =
CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER;
}
/* --- Hash Configuration --- */
/* Set the hash mode and the length of the digest */
qctx->session_data->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_AES_GCM;
qctx->session_data->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH;
qctx->session_data->hashSetupData.digestResultLenInBytes = EVP_GCM_TLS_TAG_LEN;
/* For GCM authKey and authKeyLen are not required.
* This information is provided by the cipherKey in cipherSetupData */
qctx->session_data->hashSetupData.authModeSetupData.authKey = NULL;
qctx->session_data->hashSetupData.authModeSetupData.authKeyLenInBytes = 0;
/* Set the length of the AAD to the default value */
qctx->session_data->hashSetupData.authModeSetupData.aadLenInBytes = 0;
/* Tag follows immediately after the region to hash */
qctx->session_data->digestIsAppended = CPA_TRUE;
/* digestVerify is not required to be set. For GCM authenticated
* encryption this value is understood to be CPA_FALSE during encryption and
* CPA_TRUE during decryption */
qctx->init_params_set = 1;
return 1;
}
/******************************************************************************
* function:
* qat_aes_gcm_init(EVP_CIPHER_CTX *ctx, const unsigned char *inkey,
* int keylen, const unsigned char *iv, int ivlen,
* int enc)
*
* @param ctx [IN] - pointer to existing context
* @param inKey [IN] - input cipher key
* @param iv [IN] - initialisation vector
* @param enc [IN] - 1 encrypt 0 decrypt
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* This function initialises the cipher and hash algorithm parameters for this
* EVP context.
*
******************************************************************************/
#ifdef QAT_OPENSSL_PROVIDER
int qat_aes_gcm_init( void *ctx, const unsigned char *inkey,
int keylen, const unsigned char *iv, int ivlen,
int enc)
#else
int qat_aes_gcm_init(EVP_CIPHER_CTX *ctx,
const unsigned char *inkey,
const unsigned char *iv,
int enc)
#endif
{
#ifdef QAT_OPENSSL_PROVIDER
QAT_GCM_CTX* qctx = NULL;
#else
qat_gcm_ctx* qctx = NULL;
#endif
if (NULL == ctx) {
WARN("ctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_INIT, QAT_R_CTX_NULL);
return 0;
}
DEBUG("CTX = %p, key = %p, iv = %p, enc = %d\n",
(void*)ctx, (void*)inkey, (void*)iv, enc);
if (!inkey && !iv) {
DEBUG("key and IV not set\n");
return 1;
}
#ifdef QAT_OPENSSL_PROVIDER
qctx = (QAT_GCM_CTX *)ctx;
qctx->enc = enc;
#else
qctx = QAT_GCM_GET_CTX(ctx);
#endif
/* Initialise a QAT session and set the cipher keys*/
if (NULL == qctx) {
WARN("qctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_INIT, QAT_R_QCTX_NULL);
return 0;
}
/* Initialize pointers to NULL to handle failures correctly */
qctx->iv = NULL;
#ifdef QAT_OPENSSL_PROVIDER
DEBUG("IV Len = %d Key Len = %d\n",
ivlen, keylen);
#else
DEBUG("IV Len = %d Key Len = %d\n",
EVP_CIPHER_CTX_iv_length(ctx), EVP_CIPHER_CTX_key_length(ctx));
#endif
/* The length of the IV in the TLS case is fixed = 12 Bytes */
qctx->iv_len = QAT_GCM_TLS_TOTAL_IV_LEN;
/* Allocate pinned memory since there can be at most 1 in-flight request */
/* The length of the full IV used by GCM must be multiple of the block size.
* When the length is equal to 12 (TLS case) a padding of 0s is
* automatically added, but you need to reserve memory for the entire block.
* That's why EVP_CIPHER_CTX_iv_length(ctx) returns 16 */
#ifdef QAT_OPENSSL_PROVIDER
if (iv != NULL) {
qctx->iv = qaeCryptoMemAlloc(ivlen, __FILE__, __LINE__);
if (qctx->iv == NULL) {
WARN("iv is NULL.\n");
QATerr(QAT_F_QAT_AES_GCM_INIT, QAT_R_IV_MALLOC_FAILURE);
goto err;
}
}
#else
qctx->iv = qaeCryptoMemAlloc(EVP_CIPHER_CTX_iv_length(ctx), __FILE__, __LINE__);
if (qctx->iv == NULL) {
WARN("iv is NULL.\n");
QATerr(QAT_F_QAT_AES_GCM_INIT, QAT_R_IV_MALLOC_FAILURE);
goto err;
}
#endif
/* Set the value of the IV */
if (NULL != iv) {
memcpy(qctx->iv, iv, qctx->iv_len);
memcpy(qctx->next_iv, iv, qctx->iv_len);
qctx->iv_set = 1;
DUMPL("iv", iv, qctx->iv_len);
} else {
#ifndef QAT_OPENSSL_PROVIDER
memset(qctx->iv, 0, qctx->iv_len);
#endif
memset(qctx->next_iv, 0, qctx->iv_len);
}
#ifdef QAT_OPENSSL_PROVIDER
DUMPL("inkey", inkey, keylen);
#else
DUMPL("inkey", inkey, EVP_CIPHER_CTX_key_length(ctx));
#endif
qctx->tls_aad_len = -1;
qctx->tag_len = -1;
qctx->iv_gen = 0;
/* Initialize QAT session */
#ifdef QAT_OPENSSL_PROVIDER
if (0 == qat_session_data_init(ctx, qctx, inkey, keylen, iv, ivlen, enc)) {
#else
if (0 == qat_session_data_init(ctx, qctx, inkey, iv, enc)) {
#endif
WARN("qat_session_data_init failed.\n");
goto err;
}
return 1;
err:
if (NULL != qctx->iv) {
if (qctx->iv != EVP_CIPHER_CTX_iv_noconst(ctx)) {
qaeCryptoMemFreeNonZero(qctx->iv);
}
qctx->iv = NULL;
}
if (NULL != qctx->cipher_key) {
qaeCryptoMemFree(qctx->cipher_key);
qctx->cipher_key = NULL;
}
return 0;
}
/******************************************************************************
* * function:
* aes_gcm_increment_counter(unsigned char *ifc)
*
* @param ifc [IN,OUT] - pointer to invocation field counter
*
* description:
* Increment provided invocation field counter (64-bit int) by 1
*
*******************************************************************************/
static inline void qat_aes_gcm_inc_ctr(unsigned char* ifc)
{
int inv_field_size = 8;
int i = 0;
unsigned char byte;
/* Loop over ifc starting with the least significant byte
* and work towards the most significant byte of ifc*/
for (i = inv_field_size - 1; i > 0; --i) {
byte = ifc[i];
/* increment by one and copy back to invocation field */
byte++;
ifc[i] = byte;
/* check if incremented invocation field counter wrapped to zero,
* if greater than zero then break, else continue to loop and
* increment the next ifc byte */
if (byte > 0)
break;
}
}
#ifndef QAT_OPENSSL_PROVIDER
/******************************************************************************
* function:
* qat_aes_gcm_ctrl(EVP_CIPHER_CTX *ctx,
* int type, int arg, void *ptr)
*
* @param ctx [IN] - pointer to existing context
* @param type [IN] - type of request either
* EVP_CTRL_AEAD_SET_MAC_KEY or EVP_CTRL_AEAD_TLS1_AAD
* @param arg [IN] - size of the pointed to by ptr
* @param ptr [IN] - input buffer contain the necessary parameters
*
* @retval x The return value is dependent on the type of request being made
* EVP_CTRL_AEAD_SET_MAC_KEY return of 1 is success
* EVP_CTRL_AEAD_TLS1_AAD return value indicates the amount
* for padding to be applied to the SSL/TLS record
* @retval -1 function failed
*
* description:
* This function is a generic control interface provided by the EVP API. For
* chained requests this interface is used for setting the hmac key value for
* authentication of the SSL/TLS record.
* The second type is used to specify the TLS virtual header which is used
* in the authentication calculation and to identify record payload size.
*
******************************************************************************/
int qat_aes_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
qat_gcm_ctx *qctx = NULL;
unsigned int plen = 0;
int enc = 0;
if (NULL == ctx) {
WARN("ctx is NULL.\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_CTX_NULL);
return 0;
}
qctx = QAT_GCM_GET_CTX(ctx);
if (NULL == qctx) {
WARN("qctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_QCTX_NULL);
return 0;
}
enc = EVP_CIPHER_CTX_encrypting(ctx);
switch (type) {
case EVP_CTRL_INIT:
DEBUG("EVP_CTRL_INIT, ctx = %p, type = %d, "
"arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
qctx->key_set = 0;
qctx->iv_len = 0;
qctx->iv_set = 0;
qctx->iv_gen = 0;
qctx->tls_aad_len = -1;
qctx->tag_len = -1;
return 1;
case EVP_CTRL_GET_IVLEN:
DEBUG("EVP_CTRL_GCM_GET_IVLEN, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
*(int*)ptr = qctx->iv_len;
return 1;
case EVP_CTRL_GCM_SET_IVLEN:
DEBUG("EVP_CTRL_GCM_SET_IVLEN, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
/* At the moment we support only IV with length of 12 Bytes.
* This is the length of the IV in TLS.
*
* If the user wants to use an IV with different length we should
* implement the function J0 as described in GCM standard
*/
if (QAT_GCM_TLS_TOTAL_IV_LEN != arg) {
WARN("Unsupported IV length %d\n", arg);
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_LEN_NOT_SUPPORTED);
return 0;
}
return 1;
case EVP_CTRL_GCM_SET_TAG:
DEBUG("EVP_CTRL_GCM_SET_TAG, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (arg <= QAT_GCM_TAG_MIN_LEN || arg > QAT_GCM_TAG_MAX_LEN || enc) {
WARN("TAG length invalid or invalid operation enc\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_SET_TAG_INVALID_OP);
return 0;
}
if (EVP_GCM_TLS_TAG_LEN != arg) {
WARN("TAG length %d not supported. Accepted value = 16\n", arg);
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_LEN_NOT_SUPPORTED);
return 0;
}
if (NULL == EVP_CIPHER_CTX_buf_noconst(ctx) || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_INVALID_PTR);
return 0;
}
/* ctx->buf is a static buffer of size
* EVP_MAX_BLOCK_LENGTH = 32
*/
memcpy(EVP_CIPHER_CTX_buf_noconst(ctx), ptr, arg);
qctx->tag_len = arg;
return 1;
case EVP_CTRL_GCM_GET_TAG:
DEBUG("EVP_CTRL_GCM_GET_TAG, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (arg <= QAT_GCM_TAG_MIN_LEN || arg > QAT_GCM_TAG_MAX_LEN ||
!enc || qctx->tag_len <= 0) {
WARN("TAG length invalid or invalid operation (!enc)\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_SET_TAG_INVALID_OP);
return 0;
}
if (NULL == EVP_CIPHER_CTX_buf_noconst(ctx) || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_INVALID_PTR);
return 0;
}
memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(ctx), arg);
DUMPL("Tag", ptr, arg);
return 1;
case EVP_CTRL_GCM_SET_IV_FIXED:
DEBUG("EVP_CTRL_GCM_SET_IV_FIXED, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (NULL == qctx->next_iv || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_INVALID_PTR);
return 0;
}
/* Special case: -1 length restores whole IV */
if (arg == -1) {
memcpy(qctx->next_iv, ptr, qctx->iv_len);
qctx->iv_gen = 1;
return 1;
}
/* Fixed field must be at least 4 bytes (EVP_GCM_TLS_FIXED_IV_LEN)
* and invocation field at least 8 (EVP_GCM_TLS_EXPLICIT_IV_LEN)
*/
if ((arg < EVP_GCM_TLS_FIXED_IV_LEN) ||
(qctx->iv_len - arg) < EVP_GCM_TLS_EXPLICIT_IV_LEN) {
WARN("IV length invalid\n");
return 0;
}
if (arg != EVP_GCM_TLS_FIXED_IV_LEN) {
WARN("IV length not supported\n");
return 0;
}
if (arg) {
memcpy(qctx->next_iv, ptr, arg);
}
/* Generate the explicit part of the IV for encryption */
if (enc &&
RAND_bytes(qctx->next_iv + arg, qctx->iv_len - arg) <= 0) {
WARN("Error while generating random explicit IV\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_RAND_FAILURE);
return 0;
break;
}
qctx->iv_gen = 1;
return 1;
case EVP_CTRL_GCM_IV_GEN:
/* Called in TLS case before encryption */
DEBUG("EVP_CTRL_GCM_IV_GEN, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (NULL == qctx->iv || NULL == qctx->next_iv || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_NULL_PTR_INVALID);
return 0;
}
if (0 == qctx->iv_gen) {
WARN("Operation is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_GEN_INVALID);
return 0;
}
/* Set the IV that will be used in the current operation */
memcpy(qctx->iv, qctx->next_iv, qctx->iv_len);
if (arg <= 0 || arg > qctx->iv_len) {
arg = qctx->iv_len;
}
/* Copy the explicit IV in the output buffer */
memcpy(ptr, qctx->next_iv + qctx->iv_len - arg, arg);
/* Invocation field will be at least 8 bytes in size and
* so no need to check wrap around or increment more than
* last 8 bytes.
*/
qat_aes_gcm_inc_ctr(qctx->next_iv + qctx->iv_len - 8);
qctx->iv_set = 1;
return 1;
case EVP_CTRL_GCM_SET_IV_INV:
/* Called in TLS case before decryption */
DEBUG("EVP_CTRL_GCM_SET_IV_INV, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (0 == qctx->iv_gen || enc) {
WARN("Operation is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_NVALID);
return 0;
}
if (NULL == qctx->iv || NULL == qctx->next_iv || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_IV_INVALID);
return 0;
}
/* Retrieve the explicit IV from the message buffer */
memcpy(qctx->next_iv + qctx->iv_len - arg, ptr, arg);
/* Set the IV that will be used in the current operation */
memcpy(qctx->iv, qctx->next_iv, qctx->iv_len);
qctx->iv_set = 1;
return 1;
case EVP_CTRL_AEAD_TLS1_AAD:
DEBUG("EVP_CTRL_AEAD_TLS1_AAD, ctx = %p, type = %d,"
" arg = %d, ptr = %p\n", (void*)ctx, type, arg, ptr);
if (TLS_VIRT_HDR_SIZE != arg) {
WARN("AAD length is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_AAD_LEN_INVALID);
return 0;
}
/* Allocate the memory only the first time */
if (qctx->tls_aad_len < 0) {
int aad_buffer_len = TLS_VIRT_HDR_SIZE;
DEBUG("Allocating memory for AAD in TLS sync\n");
/* For QAT the length of the buffer for AAD must be multiple
* of block size */
if (aad_buffer_len % AES_BLOCK_SIZE) {
aad_buffer_len += AES_BLOCK_SIZE - (aad_buffer_len % AES_BLOCK_SIZE);
DEBUG("Adjusting AAD buffer length = %d\n", aad_buffer_len);
}
qctx->aad = qaeCryptoMemAlloc(aad_buffer_len, __FILE__, __LINE__);
if (NULL == qctx->aad) {
WARN("Unable to allocate memory for TLS header\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_AAD_MALLOC_FAILURE);
return 0;
}
/* Set the flag to mark the TLS case */
qctx->tls_aad_len = TLS_VIRT_HDR_SIZE;
/* Set the length of the AAD in the session
* The session hasn't been initialized yet here and this value
* should never change in the TLS case */
qctx->session_data->hashSetupData.authModeSetupData.aadLenInBytes = TLS_VIRT_HDR_SIZE;
}
if (NULL == qctx->aad || NULL == ptr) {
WARN("Memory pointer is not valid\n");
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_AAD_INVALID_PTR);
return 0;
}
/* Copy the header from p into the buffer */
memcpy(qctx->aad, ptr, TLS_VIRT_HDR_SIZE);
/* Extract the length of the payload from the TLS header */
plen = qctx->aad[arg - QAT_GCM_TLS_PAYLOADLENGTH_MSB_OFFSET]
<< QAT_BYTE_SHIFT |
qctx->aad[arg - QAT_GCM_TLS_PAYLOADLENGTH_LSB_OFFSET];
DEBUG("IN plen = %d\n", plen);
DUMPL("IN qctx->aad", qctx->aad, TLS_VIRT_HDR_SIZE);
/* The payload contains the explicit IV -> correct the length */
plen -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
/* If decrypting correct for tag too */
if (!enc) {
plen -= EVP_GCM_TLS_TAG_LEN;
}
/* Fix the length like in the SW version of GCM */
qctx->aad[TLS_VIRT_HDR_SIZE - QAT_GCM_TLS_PAYLOADLENGTH_MSB_OFFSET]
= plen >> QAT_BYTE_SHIFT;
qctx->aad[TLS_VIRT_HDR_SIZE - QAT_GCM_TLS_PAYLOADLENGTH_LSB_OFFSET]
= plen;
DEBUG("OUT plen = %d\n", plen);
DUMPL("OUT qctx->aad", qctx->aad, TLS_VIRT_HDR_SIZE);
/* Return the length of the TAG */
return EVP_GCM_TLS_TAG_LEN;
default:
WARN("Invalid type %d\n", type);
QATerr(QAT_F_QAT_AES_GCM_CTRL, QAT_R_INVALID_CTRL_TYPE);
return -1;
}
}
/******************************************************************************
* function:
* qat_aes_gcm_cleanup(EVP_CIPHER_CTX *ctx)
*
* @param ctx [IN] - pointer to existing context
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* This function will cleanup all allocated resources required to perform the
* cryptographic transform.
*
******************************************************************************/
int qat_aes_gcm_cleanup(EVP_CIPHER_CTX *ctx)
{
qat_gcm_ctx* qctx = NULL;
CpaStatus sts = 0;
CpaCySymSessionSetupData* session_data = NULL;
int ret_val = 1;
DEBUG("- Entering\n");
if (NULL == ctx) {
WARN("ctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_CLEANUP, QAT_R_CTX_NULL);
return 0;
}
qctx = QAT_GCM_GET_CTX(ctx);
if (NULL == qctx) {
WARN("qctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_CLEANUP, QAT_R_QCTX_NULL);
return 0;
}
if (0 == qctx->is_session_init) {
/* It is valid to call cleanup even if the context has not been
* initialised. */
return ret_val;
}
session_data = qctx->session_data;
if (session_data) {
/* Remove the session */
if (qctx->qat_ctx) {
if ((sts = cpaCySymRemoveSession(qat_instance_handles[qctx->inst_num], qctx->qat_ctx))
!= CPA_STATUS_SUCCESS) {
WARN("cpaCySymRemoveSession FAILED, sts = %d.!\n", sts);
ret_val = 0;
/* Lets not return yet and instead make a best effort to
* cleanup the rest to avoid memory leaks
*/
}
qaeCryptoMemFreeNonZero(qctx->qat_ctx);
qctx->qat_ctx = NULL;
}
/* Cleanup the memory */
if (qctx->aad) {
qaeCryptoMemFreeNonZero(qctx->aad);
qctx->aad = NULL;
}
if (qctx->srcBufferList.pPrivateMetaData) {
qaeCryptoMemFreeNonZero(qctx->srcBufferList.pPrivateMetaData);
qctx->srcBufferList.pPrivateMetaData = NULL;
}
if (qctx->dstBufferList.pPrivateMetaData) {
qaeCryptoMemFreeNonZero(qctx->dstBufferList.pPrivateMetaData);
qctx->dstBufferList.pPrivateMetaData = NULL;
}
if (qctx->iv) {
qaeCryptoMemFreeNonZero(qctx->iv);
qctx->iv = NULL;
}
if (qctx->cipher_key) {
qaeCryptoMemFree(qctx->cipher_key);
qctx->cipher_key = NULL;
}
session_data->cipherSetupData.pCipherKey = NULL;
OPENSSL_clear_free(session_data, sizeof(CpaCySymSessionSetupData));
}
qctx->is_session_init = 0;
return ret_val;
}
#endif
/******************************************************************************
* * function:
*
* static void qat_gcm_cb(void *pCallbackTag, CpaStatus status,
* const CpaCySymOp operationType,
* void *pOpData, CpaBufferList *pDstBuffer,
* CpaBoolean verifyResult)
*
* @param pCallbackTag [IN] - Opaque value provided by user while making
* individual function call. Cast to op_done_pipe_t.
* @param status [IN] - Status of the operation.
* @param operationType [IN] - Identifies the operation type requested.
* @param pOpData [IN] - Pointer to structure with input parameters.
* @param pDstBuffer [IN] - Destination buffer to hold the data output.
* @param verifyResult [IN] - Used to verify digest result.
*
* description:
Callback to indicate the completion of crypto operation
******************************************************************************/
static void qat_gcm_cb(void *pCallbackTag, CpaStatus status,
const CpaCySymOp operationType,
void *pOpData, CpaBufferList *pDstBuffer,
CpaBoolean verifyResult)
{
if (enable_heuristic_polling) {
QAT_ATOMIC_DEC(num_cipher_pipeline_requests_in_flight);
}
qat_crypto_callbackFn(pCallbackTag, status, CPA_CY_SYM_OP_CIPHER, pOpData,
NULL, CPA_TRUE);
}
/******************************************************************************
* function:
* qat_aes_gcm_session_init(EVP_CIPHER_CTX *ctx)
*
* @param ctx [IN] - pointer to context
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* This function synchronises the initialisation of the QAT session and
* pre-allocates the necessary buffers for the session.
******************************************************************************/
#ifdef QAT_OPENSSL_PROVIDER
static int qat_aes_gcm_session_init(void *ctx)
#else
static int qat_aes_gcm_session_init(EVP_CIPHER_CTX *ctx)
#endif
{
#ifdef QAT_OPENSSL_PROVIDER
QAT_GCM_CTX* qctx = NULL;
#else
qat_gcm_ctx* qctx = NULL;
#endif
CpaCySymSessionSetupData *sessionSetupData = NULL;
Cpa32U sessionCtxSize = 0;
CpaCySymSessionCtx pSessionCtx = NULL;
const unsigned int NUM_BUFFERS = 1;
DEBUG("- Entering\n");
if (NULL == ctx) {
WARN("parameter ctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, QAT_R_CTX_NULL);
return 0;
}
#ifdef QAT_OPENSSL_PROVIDER
qctx = (QAT_GCM_CTX *)ctx;
#else
qctx = QAT_GCM_GET_CTX(ctx);
#endif
if (NULL == qctx) {
WARN("qctx is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, QAT_R_QCTX_NULL);
return 0;
}
/* All parameters have not been set yet or we have already been
* initialised. */
if ((1 != qctx->init_params_set) || (1 == qctx->is_session_init)) {
WARN("Parameters not set or session already initialised\n");
return 0;
}
sessionSetupData = qctx->session_data;
if (NULL == sessionSetupData) {
WARN("sessionSetupData is NULL\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, QAT_R_SSD_NULL);
return 0;
}
qctx->inst_num = get_next_inst_num();
if (qctx->inst_num == QAT_INVALID_INSTANCE) {
WARN("Failed to get QAT Instance Handle\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
return 0;
}
if (cpaCySymSessionCtxGetSize(qat_instance_handles[qctx->inst_num],
sessionSetupData,
&sessionCtxSize) != CPA_STATUS_SUCCESS) {
WARN("cpaCySymSessionCtxGetSize failed.\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
return 0;
}
pSessionCtx = (CpaCySymSessionCtx) qaeCryptoMemAlloc(sessionCtxSize,
__FILE__, __LINE__);
if (NULL == pSessionCtx) {
WARN("pSessionCtx malloc failed\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
return 0;
}
DUMP_SESSION_SETUP_DATA(sessionSetupData);
if (cpaCySymInitSession(qat_instance_handles[qctx->inst_num],
qat_gcm_cb,
sessionSetupData,
pSessionCtx) != CPA_STATUS_SUCCESS) {
WARN("cpaCySymInitSession failed.\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
qaeCryptoMemFree(pSessionCtx);
return 0;
}
qctx->qat_ctx = pSessionCtx;
/* Setup meta data for buffer lists */
if (cpaCyBufferListGetMetaSize(qat_instance_handles[qctx->inst_num],
NUM_BUFFERS,
&(qctx->meta_size))
!= CPA_STATUS_SUCCESS) {
WARN("cpaCyBufferListGetBufferSize failed.\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
qaeCryptoMemFree(pSessionCtx);
return 0;
}
qctx->srcBufferList.numBuffers = NUM_BUFFERS;
qctx->srcBufferList.pBuffers = qctx->srcFlatBuffer;
qctx->srcBufferList.pUserData = NULL;
qctx->dstBufferList.numBuffers = NUM_BUFFERS;
qctx->dstBufferList.pBuffers = qctx->dstFlatBuffer;
qctx->dstBufferList.pUserData = NULL;
if (qctx->meta_size) {
qctx->srcBufferList.pPrivateMetaData =
qaeCryptoMemAlloc(qctx->meta_size, __FILE__, __LINE__);
if (NULL == qctx->srcBufferList.pPrivateMetaData) {
WARN("srcBufferList.pPrivateMetaData is NULL.\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
qaeCryptoMemFreeNonZero(pSessionCtx);
return 0;
}
qctx->dstBufferList.pPrivateMetaData =
qaeCryptoMemAlloc(qctx->meta_size, __FILE__, __LINE__);
if (NULL == qctx->dstBufferList.pPrivateMetaData) {
WARN("dstBufferList.pPrivateMetaData is NULL.\n");
QATerr(QAT_F_QAT_AES_GCM_SESSION_INIT, ERR_R_INTERNAL_ERROR);
qaeCryptoMemFreeNonZero(qctx->srcBufferList.pPrivateMetaData);
qctx->srcBufferList.pPrivateMetaData = NULL;
qaeCryptoMemFreeNonZero(pSessionCtx);
return 0;
}
} else {
qctx->srcBufferList.pPrivateMetaData = NULL;
qctx->dstBufferList.pPrivateMetaData = NULL;
}
/* Create the OpData structure to remove this processing from the data
* path */
qctx->OpData.sessionCtx = qctx->qat_ctx;
qctx->OpData.packetType = CPA_CY_SYM_PACKET_TYPE_FULL;
/* Set the IV */
/* Set the AAD */
qctx->OpData.pAdditionalAuthData = qctx->aad;
DUMPL("qctx->OpData.pAdditionalAuthData",
qctx->OpData.pAdditionalAuthData,
qctx->session_data->hashSetupData.authModeSetupData.aadLenInBytes);
/* All the data in the buffer must be encrypted */
qctx->OpData.cryptoStartSrcOffsetInBytes = 0;
/* Following parameters are ignored in GCM */
qctx->OpData.messageLenToHashInBytes = 0;
qctx->OpData.hashStartSrcOffsetInBytes = 0;
qctx->is_session_init = 1;
return 1;