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qat_hw_chachapoly.c
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qat_hw_chachapoly.c
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/* ====================================================================
*
*
* BSD LICENSE
*
* Copyright(c) 2021-2024 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_chachapoly.c
*
* This file provides an implementation of CHACHAPOLY operations for OpenSSL
* engine
*
*****************************************************************************/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <pthread.h>
#include <string.h>
#include <signal.h>
#include <stdarg.h>
#include "openssl/ossl_typ.h"
#include <openssl/evp.h>
#include "e_qat.h"
#include "qat_hw_callback.h"
#include "qat_hw_polling.h"
#include "qat_events.h"
#include "qat_utils.h"
#include "qat_hw_ciphers.h"
#include "qat_evp.h"
#include "qat_hw_chachapoly.h"
#ifdef QAT_HW_INTREE
# define ENABLE_QAT_HW_CHACHAPOLY
#endif
# define GET_SW_CHACHA_CTX EVP_chacha20_poly1305()
#ifdef ENABLE_QAT_HW_CHACHAPOLY
# ifdef QAT_OPENSSL_PROVIDER
static int qat_chacha20_poly1305_init_key_iv(qat_chachapoly_ctx *cp_ctx,
const unsigned char *key,
const unsigned char *iv);
static int qat_chacha20_poly1305_mac_keygen(qat_chachapoly_ctx *cp_ctx);
static void qat_chacha20_core(chacha_buf *output,
const unsigned int input[16]);
static void qat_chacha20_ctr32(unsigned char *out, const unsigned char *inp,
size_t len, const unsigned int key[8],
const unsigned int counter[4]);
# else
static int qat_chacha20_poly1305_init(EVP_CIPHER_CTX *ctx,
const unsigned char *user_key,
const unsigned char *iv, int enc);
static int qat_chacha20_poly1305_do_cipher(EVP_CIPHER_CTX * ctx,
unsigned char *out,
const unsigned char *in,
size_t len);
static int qat_chacha20_poly1305_cleanup(EVP_CIPHER_CTX *ctx);
static int qat_chacha20_poly1305_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
void *ptr);
static int qat_chacha20_poly1305_init_key_iv(qat_chachapoly_ctx *cp_ctx,
const unsigned char *key,
const unsigned char *iv);
static int qat_chacha20_poly1305_mac_keygen(qat_chachapoly_ctx *cp_ctx);
static void qat_chacha20_core(chacha_buf *output,
const unsigned int input[16]);
static void qat_chacha20_ctr32(unsigned char *out, const unsigned char *inp,
size_t len, const unsigned int key[8],
const unsigned int counter[4]);
# endif
/******************************************************************************
* function:
* chachapoly_cipher_meth(int nid, int keylen)
*
* @param nid [IN] - Cipher NID to be created
* @param keylen [IN] - Key length of cipher
* @retval - EVP_CIPHER * to created cipher
* @retval - NULL if failure
*
* description:
* create a new EVP_CIPHER based on requested nid
******************************************************************************/
const EVP_CIPHER *chachapoly_cipher_meth(int nid, int keylen)
{
EVP_CIPHER *c = NULL;
# ifndef QAT_OPENSSL_PROVIDER
int res = 1;
if (qat_hw_offload &&
(qat_hw_algo_enable_mask & ALGO_ENABLE_MASK_CHACHA_POLY)) {
/* block size is 1 and key size is 32 bytes. */
if ((c = EVP_CIPHER_meth_new(nid, 1, keylen)) == NULL) {
WARN("Failed to allocate cipher methods for nid %d\n", nid);
return NULL;
}
/* IV size is 12 bytes for TLS protocol */
res &= EVP_CIPHER_meth_set_iv_length(c, QAT_CHACHA20_POLY1305_MAX_IVLEN);
res &= EVP_CIPHER_meth_set_flags(c, EVP_CIPH_FLAG_AEAD_CIPHER |
EVP_CIPH_CUSTOM_IV |
EVP_CIPH_ALWAYS_CALL_INIT |
EVP_CIPH_CTRL_INIT | EVP_CIPH_CUSTOM_COPY |
EVP_CIPH_FLAG_CUSTOM_CIPHER |
EVP_CIPH_CUSTOM_IV_LENGTH);
res &= EVP_CIPHER_meth_set_init(c, qat_chacha20_poly1305_init);
res &= EVP_CIPHER_meth_set_do_cipher(c, qat_chacha20_poly1305_do_cipher);
res &= EVP_CIPHER_meth_set_cleanup(c, qat_chacha20_poly1305_cleanup);
res &= EVP_CIPHER_meth_set_impl_ctx_size(c, 0);
res &= EVP_CIPHER_meth_set_set_asn1_params(c, NULL);
res &= EVP_CIPHER_meth_set_get_asn1_params(c, NULL);
res &= EVP_CIPHER_meth_set_ctrl(c, qat_chacha20_poly1305_ctrl);
if (res == 0) {
WARN("Failed to set cipher methods for nid %d\n", nid);
EVP_CIPHER_meth_free(c);
c = NULL;
}
qat_hw_chacha_poly_offload = 1;
DEBUG("QAT HW CHACHA POLY registration succeeded\n");
return c;
} else {
qat_hw_chacha_poly_offload = 0;
DEBUG("QAT HW CHACHA POLY is disabled, using OpenSSL SW\n");
EVP_CIPHER_meth_free(c);
return EVP_chacha20_poly1305();
}
# else
return c;
# endif
}
/******************************************************************************
* function:
* qat_chachapoly_cb(void *callbackTag, CpaStatus status,
* const CpaCySymOp operationType, void *pOpData,
* CpaBufferList * pDstBuffer, CpaBoolean verifyResult)
*
* @param pCallbackTag [IN] - Opaque value provided by user while making
* individual function call.
* @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 function used by chachapoly.
******************************************************************************/
static void qat_chachapoly_cb(void *callbackTag, 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(callbackTag, status, CPA_CY_SYM_OP_CIPHER, pOpData,
NULL, CPA_TRUE);
}
static const CpaCySymOpData template_opData = {
.sessionCtx = NULL,
.packetType = CPA_CY_SYM_PACKET_TYPE_FULL,
.pIv = NULL,
.ivLenInBytes = 0,
.cryptoStartSrcOffsetInBytes = 0,
.messageLenToCipherInBytes = 0,
.hashStartSrcOffsetInBytes = 0,
.messageLenToHashInBytes = 0,
.pDigestResult = NULL,
.pAdditionalAuthData = NULL
};
/******************************************************************************
* function:
* qat_chacha20_core(chacha_buf *output, const unsigned int input[16])
*
* @param output [OUT] - output buffer to hold key bytes
* @param input [IN] - input keystream
*
* description:
* chacha_core performs 20 rounds of ChaCha on the input words in
* "input" and writes the 64 output bytes to "output".
******************************************************************************/
static void qat_chacha20_core(chacha_buf *output, const unsigned int input[16])
{
unsigned x[16];
int i;
memcpy(x, input, sizeof(x));
for (i = 20; i > 0; i -= 2) {
QUARTERROUND(0, 4, 8, 12);
QUARTERROUND(1, 5, 9, 13);
QUARTERROUND(2, 6, 10, 14);
QUARTERROUND(3, 7, 11, 15);
QUARTERROUND(0, 5, 10, 15);
QUARTERROUND(1, 6, 11, 12);
QUARTERROUND(2, 7, 8, 13);
QUARTERROUND(3, 4, 9, 14);
}
for (i = 0; i < 16; ++i)
output->u[i] = x[i] + input[i];
}
/******************************************************************************
* function:
* qat_chacha20_ctr32(unsigned char *out, const unsigned char *inp,
* size_t len, const unsigned int key[8],
* const unsigned int counter[4])
*
* @param out [OUT] - output buffer to hold key bytes
* @param inp [IN] - input keystream
* @param len [IN] - length of input key buffer
* @param key [IN] - chacha key collected into 8 64-bit elements
* @param counter [IN] - nonce and counter values concatenated into 4 32-bit elements
*
* description:
* ChaCha20_ctr32 encrypts "len" bytes from "inp" with the given key and
* nonce and writes the result to "out", which may be equal to "inp".
******************************************************************************/
static void qat_chacha20_ctr32(unsigned char *out, const unsigned char *inp,
size_t len, const unsigned int key[8],
const unsigned int counter[4])
{
static const char sigma[16] = "expand 32-byte k";
const char *constants;
unsigned int input[16];
chacha_buf buf;
size_t todo, i;
constants = sigma;
input[0] = U8TO32_LITTLE(constants + 0);
input[1] = U8TO32_LITTLE(constants + 4);
input[2] = U8TO32_LITTLE(constants + 8);
input[3] = U8TO32_LITTLE(constants + 12);
input[4] = key[0];
input[5] = key[1];
input[6] = key[2];
input[7] = key[3];
input[8] = key[4];
input[9] = key[5];
input[10] = key[6];
input[11] = key[7];
input[12] = counter[0];
input[13] = counter[1];
input[14] = counter[2];
input[15] = counter[3];
while (len > 0) {
todo = sizeof(buf);
if (len < todo)
todo = len;
qat_chacha20_core(&buf, input);
for (i = 0; i < todo; i++)
out[i] = inp[i] ^ buf.c[i];
out += todo;
inp += todo;
len -= todo;
input[12]++;
}
}
/******************************************************************************
* function:
* qat_chacha20_poly1305_init_key_iv(qat_chachapoly_ctx *ctx,
* const unsigned char *key,
* const unsigned char *iv)
*
* @param ctx [IN] - pointer to existing cipher ctx
* @param key [IN] - 256 bit cipher key
* @param iv [IN] - 96 bit IV
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* Initialise cipher key and IV in order to generate Poly1305(mac) key.
******************************************************************************/
static int qat_chacha20_poly1305_init_key_iv(qat_chachapoly_ctx *cp_ctx,
const unsigned char *key,
const unsigned char *iv)
{
int i;
if (cp_ctx == NULL) {
WARN("chachapoly cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_INIT_KEY_IV,
QAT_R_CHACHAPOLY_CTX_NULL);
return 0;
}
if (iv != NULL) {
unsigned char temp[QAT_CHACHA_CTR_SIZE] = { 0 };
if (cp_ctx->nonce_len <= QAT_CHACHA_CTR_SIZE)
memcpy(temp + QAT_CHACHA_CTR_SIZE - cp_ctx->nonce_len, iv,
cp_ctx->nonce_len);
for (i = 0; i < QAT_CHACHA_CTR_SIZE; i+=4)
cp_ctx->counter[i/4] = CHACHA_U8TOU32(temp+i);
cp_ctx->iv[0] = cp_ctx->counter[1];
cp_ctx->iv[1] = cp_ctx->counter[2];
cp_ctx->iv[2] = cp_ctx->counter[3];
}
if (key != NULL) {
for (i = 0; i < QAT_CHACHA_KEY_SIZE; i+=4)
cp_ctx->chacha_key[i/4] = CHACHA_U8TOU32(key+i);
}
return 1;
}
/******************************************************************************
* function:
* qat_chacha20_poly1305_mac_keygen(qat_chachapoly_ctx *cp_ctx)
*
* @param ctx [IN] - pointer to existing cipher ctx
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* Generate One-Time Poly1305 key for the hash operation
* using cipher key and IV.
******************************************************************************/
static int qat_chacha20_poly1305_mac_keygen(qat_chachapoly_ctx *cp_ctx)
{
const unsigned char in_buf[2 * QAT_CHACHA_BLK_SIZE] = { 0 };
if (cp_ctx == NULL) {
WARN("chachapoly cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_MAC_KEYGEN,
QAT_R_CHACHAPOLY_CTX_NULL);
return 0;
}
/* Initialise counter as 0. */
cp_ctx->counter[0] = 0;
/* qat_chacha20_ctr32 encrypts QAT_CHACHA_BLK_SIZE bytes from in_buf
* with the given key and nonce and writes the result
* to cp_ctx->mac_key */
qat_chacha20_ctr32(cp_ctx->mac_key, in_buf, QAT_CHACHA_BLK_SIZE,
cp_ctx->chacha_key, cp_ctx->counter);
cp_ctx->mac_key_set = 1;
return 1;
}
/******************************************************************************
* function:
* qat_chachapoly_session_data_init(qat_chachapoly_ctx *cp_ctx,
* const unsigned char *inkey,
* const unsigned char *iv,
* int enc)
*
* @param ctx [IN] - pointer to existing cipher ctx
* @param inKey [IN] - 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 is to create QAT specific session data.
* It is called from the function qat_chacha20_poly1305_init().
******************************************************************************/
static int qat_chachapoly_session_data_init(qat_chachapoly_ctx *cp_ctx,
const unsigned char* key,
const unsigned char* iv,
int enc)
{
if (cp_ctx == NULL) {
WARN("chachapoly cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT,
QAT_R_CHACHAPOLY_CTX_NULL);
return 0;
}
if (cp_ctx->session_data == NULL) {
cp_ctx->session_data = OPENSSL_zalloc(sizeof(CpaCySymSessionSetupData));
if (cp_ctx->session_data == NULL) {
WARN("Failed to allocate session setup data\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT,
ERR_R_MALLOC_FAILURE);
return 0;
}
}
cp_ctx->inst_num = get_instance(QAT_INSTANCE_SYM, QAT_INSTANCE_ANY);
if (cp_ctx->inst_num == QAT_INVALID_INSTANCE) {
WARN("Failed to get a QAT instance.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT, ERR_R_INTERNAL_ERROR);
return 0;
}
cp_ctx->qat_svm = !qat_instance_details[cp_ctx->inst_num].qat_instance_info.requiresPhysicallyContiguousMemory;
DEBUG("inst_num = %d inst mem type %d \n", cp_ctx->inst_num, cp_ctx->qat_svm);
if (cp_ctx->mac_key == NULL) {
cp_ctx->mac_key = qat_mem_alloc(QAT_CHACHA_BLK_SIZE, cp_ctx->qat_svm, __FILE__, __LINE__);
if (cp_ctx->mac_key == NULL) {
WARN("Failure in mac_key buffer allocation.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT,
ERR_R_MALLOC_FAILURE);
return -1;
}
}
if (key != NULL) {
memcpy(cp_ctx->cipher_key, key, QAT_CHACHA_KEY_SIZE);
cp_ctx->key_set = 1;
DUMPL("key", key, QAT_CHACHA_KEY_SIZE);
}
if (iv != NULL) {
memcpy(cp_ctx->nonce, iv, QAT_CHACHA20_POLY1305_MAX_IVLEN);
cp_ctx->iv_set = 1;
DUMPL("IV", iv, QAT_CHACHA20_POLY1305_MAX_IVLEN);
}
cp_ctx->session_data->sessionPriority = CPA_CY_PRIORITY_HIGH;
cp_ctx->session_data->symOperation = CPA_CY_SYM_OP_ALGORITHM_CHAINING;
cp_ctx->session_data->cipherSetupData.cipherAlgorithm = CPA_CY_SYM_CIPHER_CHACHA;
cp_ctx->session_data->cipherSetupData.cipherDirection = CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT;
cp_ctx->session_data->cipherSetupData.cipherKeyLenInBytes = QAT_CHACHA_KEY_SIZE;
/* Cipher key set NULL here as it will be set later. */
cp_ctx->session_data->cipherSetupData.pCipherKey = NULL;
cp_ctx->session_data->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_POLY;
cp_ctx->session_data->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH;
cp_ctx->session_data->hashSetupData.digestResultLenInBytes = QAT_POLY1305_DIGEST_SIZE;
cp_ctx->session_data->hashSetupData.authModeSetupData.authKey = NULL;
cp_ctx->session_data->hashSetupData.authModeSetupData.authKeyLenInBytes = 0;
cp_ctx->session_data->hashSetupData.authModeSetupData.aadLenInBytes = 0;
/* ChachaPoly performs the chacha(cipher) operation first and then
* the Poly MAC operation (hash) during encryption. */
cp_ctx->session_data->algChainOrder = CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH;
cp_ctx->session_data->digestIsAppended = CPA_FALSE;
cp_ctx->session_data->verifyDigest = CPA_FALSE;
if (!enc) {
cp_ctx->session_data->cipherSetupData.cipherDirection =
CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT;
cp_ctx->session_data->algChainOrder = CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER;
}
/* Partial requests not supported for CHACHA-POLY in the driver. */
cp_ctx->session_data->partialsNotRequired = CPA_TRUE;
if (cp_ctx->opd == NULL) {
cp_ctx->opd = OPENSSL_zalloc(sizeof(template_opData));
if (cp_ctx->opd == NULL) {
WARN("memory allocation failed for symopData struct.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT, ERR_R_MALLOC_FAILURE);
return 0;
}
/* Set cipher operation data template */
memcpy(cp_ctx->opd, &template_opData, sizeof(template_opData));
}
/* Set cipher key and IV. */
if (cp_ctx->key_set && cp_ctx->iv_set) {
if (qat_chacha20_poly1305_init_key_iv(cp_ctx, cp_ctx->cipher_key, cp_ctx->nonce)) {
/* Generate Poly1305 mac key */
if (!qat_chacha20_poly1305_mac_keygen(cp_ctx)) {
WARN("MAC keygen operation failed.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT,
ERR_R_INTERNAL_ERROR);
return 0;
}
DEBUG("Poly1305 key generated\n");
}
cp_ctx->session_data->cipherSetupData.pCipherKey = cp_ctx->cipher_key;
if (cp_ctx->opd->pIv == NULL) {
cp_ctx->opd->pIv = qat_mem_alloc(QAT_CHACHA20_POLY1305_MAX_IVLEN, cp_ctx->qat_svm,
__FILE__, __LINE__);
if (cp_ctx->opd->pIv == NULL) {
WARN("Malloc Failure for opd->pIv.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SESSION_DATA_INIT, ERR_R_MALLOC_FAILURE);
return 0;
}
}
memcpy(cp_ctx->opd->pIv, cp_ctx->nonce, QAT_CHACHA20_POLY1305_MAX_IVLEN);
cp_ctx->opd->ivLenInBytes = QAT_CHACHA20_POLY1305_MAX_IVLEN;
}
/* Mark session context init as set. */
cp_ctx->context_params_set = 1;
DEBUG("Chachapoly context init set.\n");
return 1;
}
/******************************************************************************
* function:
* qat_chacha20_poly1305_init(EVP_CIPHER_CTX *ctx,
* const unsigned char *inkey,
* const unsigned char *iv,
* int enc)
*
* @param ctx [IN] - pointer to existing cipher ctx
* @param inKey [IN] - 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 parameters for this EVP context.
* This function can and will be **called multiple times** with some args
* being NULL.
*
******************************************************************************/
#ifdef QAT_OPENSSL_PROVIDER
int qat_chacha20_poly1305_init(QAT_PROV_CIPHER_CTX *ctx,
const unsigned char *user_key,
const unsigned char *iv, int enc)
#else
static int qat_chacha20_poly1305_init(EVP_CIPHER_CTX *ctx,
const unsigned char *user_key,
const unsigned char *iv, int enc)
#endif
{
int ret = 1;
if (unlikely(ctx == NULL)) {
WARN("cipher context is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_INIT, QAT_R_CTX_NULL);
return 0;
}
#ifdef QAT_OPENSSL_PROVIDER
qat_chachapoly_ctx *cp_ctx = ctx->qat_cpctx;
#else
qat_chachapoly_ctx *cp_ctx = qat_chachapoly_data(ctx);
#endif
if (cp_ctx == NULL) {
WARN("chachapoly cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_INIT, QAT_R_CHACHAPOLY_CTX_NULL);
return 0;
}
#ifndef ENABLE_QAT_SMALL_PKT_OFFLOAD
# ifndef QAT_OPENSSL_PROVIDER
EVP_CIPHER_CTX_set_cipher_data(ctx, cp_ctx->sw_ctx_cipher_data);
/* Run the software init function */
ret = EVP_CIPHER_meth_get_init(GET_SW_CHACHA_CTX)(ctx, user_key, iv, enc);
EVP_CIPHER_CTX_set_cipher_data(ctx, cp_ctx);
if (ret != 1)
goto init_err;
# endif
#endif
/* Return 1 since it's not an error if key and IV not set. */
if (!user_key && !iv) {
DEBUG("key and IV not set.\n");
return 1;
}
/* Initialize QAT session */
ret = qat_chachapoly_session_data_init(cp_ctx, user_key, iv, enc);
if (ret == 0) {
WARN("qat_chachapoly_session_data_init failed.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_INIT, ERR_R_INTERNAL_ERROR);
goto init_err;
}
DEBUG("Init complete. ctx %p, cp_ctx %p, Session data %p\n", ctx, cp_ctx,
cp_ctx->session_data);
return ret;
init_err:
if (cp_ctx->opd) {
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->opd->pIv, cp_ctx->qat_svm);
OPENSSL_clear_free(cp_ctx->opd, sizeof(template_opData));
}
if (cp_ctx->session_data != NULL) {
OPENSSL_free(cp_ctx->session_data);
cp_ctx->session_data = NULL;
}
return ret;
}
/******************************************************************************
* function:
* qat_chachapoly_setup_op_params(qat_chachapoly_ctx *cp_ctx)
*
* @param ctx [IN] - pointer to existing ctx
*
* @retval 1 function succeeded
* @retval 0 function failed
*
* description:
* This function initialises the crypto session and flatbuffer lists to be
* passed to the driver.
*
******************************************************************************/
static int qat_chachapoly_setup_op_params(qat_chachapoly_ctx *cp_ctx)
{
int numBuffers = 1; /* Set numBuffers to 1. (For cipher and hash operations.) */
Cpa32U bufferMetaSize = 0;
Cpa32U sctx_size = 0;
CpaStatus status;
if (cp_ctx == NULL) {
WARN("chachapoly context cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, QAT_R_CHACHAPOLY_CTX_NULL);
return 0;
}
status = cpaCySymSessionCtxGetSize(qat_instance_handles[cp_ctx->inst_num],
cp_ctx->session_data, &sctx_size);
if (status != CPA_STATUS_SUCCESS) {
WARN("Failed to get SessionCtx size.\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, ERR_R_INTERNAL_ERROR);
return 0;
}
DEBUG("Size of session ctx = %d\n", sctx_size);
cp_ctx->session_ctx = (CpaCySymSessionCtx) qat_mem_alloc(sctx_size, cp_ctx->qat_svm,
__FILE__, __LINE__);
if (cp_ctx->session_ctx == NULL) {
WARN("Memory alloc failed for session ctx\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, ERR_R_MALLOC_FAILURE);
return 0;
}
DUMP_SESSION_SETUP_DATA(cp_ctx->session_data);
/* Initialise Session data */
status = cpaCySymInitSession(qat_instance_handles[cp_ctx->inst_num],
qat_chachapoly_cb,
cp_ctx->session_data, cp_ctx->session_ctx);
if (status != CPA_STATUS_SUCCESS) {
WARN("cpaCySymInitSession failed! Status = %d\n", status);
if (((status == CPA_STATUS_RESTARTING) || (status == CPA_STATUS_FAIL))) {
CRYPTO_QAT_LOG("Failed to submit request to qat inst_num %d device_id %d\n",
cp_ctx->inst_num,
qat_instance_details[cp_ctx->inst_num].qat_instance_info.physInstId.packageId);
}
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, ERR_R_INTERNAL_ERROR);
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->session_ctx, cp_ctx->qat_svm);
return 0;
}
/* Get buffer metasize */
status = cpaCyBufferListGetMetaSize(qat_instance_handles[cp_ctx->inst_num],
numBuffers, &bufferMetaSize);
if (status != CPA_STATUS_SUCCESS) {
WARN("cpaCyBufferListGetMetaSize failed for the instance id %d\n",
cp_ctx->inst_num);
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, ERR_R_INTERNAL_ERROR);
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->session_ctx, cp_ctx->qat_svm);
return 0;
}
DEBUG("Buffer MetaSize : %d\n", bufferMetaSize);
cp_ctx->pSrcBufferList.numBuffers = numBuffers;
cp_ctx->pDstBufferList.numBuffers = numBuffers;
if (bufferMetaSize) {
cp_ctx->pSrcBufferList.pPrivateMetaData =
qat_mem_alloc(bufferMetaSize, cp_ctx->qat_svm, __FILE__, __LINE__);
cp_ctx->pDstBufferList.pPrivateMetaData =
qat_mem_alloc(bufferMetaSize, cp_ctx->qat_svm,__FILE__, __LINE__);
if (cp_ctx->pSrcBufferList.pPrivateMetaData == NULL ||
cp_ctx->pDstBufferList.pPrivateMetaData == NULL) {
WARN("QMEM alloc failed for PrivateData\n");
QATerr(QAT_F_QAT_CHACHAPOLY_SETUP_OP_PARAMS, ERR_R_MALLOC_FAILURE);
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->session_ctx, cp_ctx->qat_svm);
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->pSrcBufferList.pPrivateMetaData, cp_ctx->qat_svm);
QAT_MEM_FREE_NONZERO_BUFF(cp_ctx->pDstBufferList.pPrivateMetaData, cp_ctx->qat_svm);
return 0;
}
} else {
cp_ctx->pSrcBufferList.pPrivateMetaData = NULL;
cp_ctx->pDstBufferList.pPrivateMetaData = NULL;
}
cp_ctx->pDstBufferList.pUserData = NULL;
cp_ctx->pSrcBufferList.pUserData = NULL;
cp_ctx->pSrcBufferList.pBuffers = &cp_ctx->src_buffer;
cp_ctx->pDstBufferList.pBuffers = &cp_ctx->dst_buffer;
/* Mark session init as set.*/
cp_ctx->session_init = 1;
return 1;
}
/******************************************************************************
* function:
* qat_chacha20_poly1305_tls_cipher(EVP_CIPHER_CTX *evp_ctx, unsigned char *out,
* const unsigned char *in, size_t len)
*
* @param evp_ctx [IN] - pointer to existing context
* @param out [OUT] - output buffer for transform result
* @param in [IN] - input buffer
* @param len [IN] - length of input buffer
*
* @retval 0 failure
* @retval 1 success
*
* description:
* This function performs the cryptographic transform according to the
* parameters setup during initialisation.
*
* This is the function used in the TLS case.
*
******************************************************************************/
#ifdef QAT_OPENSSL_PROVIDER
static int qat_chacha20_poly1305_tls_cipher(QAT_PROV_CIPHER_CTX * ctx, unsigned char *out,
size_t *outl, const unsigned char *in, size_t len)
#else
static int qat_chacha20_poly1305_tls_cipher(EVP_CIPHER_CTX * ctx, unsigned char *out,
const unsigned char *in, size_t len)
#endif
{
int outlen = 0;
int job_ret = 0;
int cipher_len = 0;
int plen;
int enc;
CpaStatus status;
op_done_t op_done;
thread_local_variables_t *tlv = NULL;
qat_chachapoly_ctx *cp_ctx = NULL;
#if !defined(QAT_OPENSSL_PROVIDER) && !defined(ENABLE_QAT_SMALL_PKT_OFFLOAD)
int retVal = 0;
# endif
if (unlikely(ctx == NULL)) {
WARN("ctx parameter is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, QAT_R_CTX_NULL);
return -1;
}
#ifdef QAT_OPENSSL_PROVIDER
cp_ctx = ctx->qat_cpctx;
#else
cp_ctx = qat_chachapoly_data(ctx);
#endif
if (cp_ctx == NULL) {
WARN("chachapoly context cipher data is NULL.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER,
QAT_R_CHACHAPOLY_CTX_NULL);
return -1;
}
plen = cp_ctx->tls_payload_length;
if (len != plen + QAT_POLY1305_BLOCK_SIZE) {
WARN("Invalid tls payload length\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER,
QAT_R_INVALID_INPUT_LENGTH);
return -1;
}
#ifdef QAT_OPENSSL_PROVIDER
enc = QAT_PROV_GET_ENC(ctx);
#else
enc = EVP_CIPHER_CTX_encrypting(ctx);
#endif
DEBUG("ctx %p, cp_ctx %p, len %zu plen %d enc: %d\n",
ctx, cp_ctx, len, plen, enc);
#ifndef ENABLE_QAT_SMALL_PKT_OFFLOAD
cp_ctx->packet_size = len;
# ifdef QAT_OPENSSL_PROVIDER
if ( (len - QAT_POLY1305_BLOCK_SIZE) <=
qat_pkt_threshold_table_get_threshold(ctx->nid)) {
int sw_final_len = 0;
DEBUG("Using OpenSSL SW for Packetsize %zu\n", len);
if (!EVP_CipherUpdate(ctx->sw_ctx, out, &outlen, in, len))
goto cleanup;
if (!EVP_CipherFinal_ex(ctx->sw_ctx, out + outlen, &sw_final_len))
goto cleanup;
outlen = len + sw_final_len;
goto cleanup;
}
# else
if ( (len - QAT_POLY1305_BLOCK_SIZE) <=
qat_pkt_threshold_table_get_threshold(EVP_CIPHER_CTX_nid(ctx))) {
DEBUG("Using OpenSSL SW for Packetsize %zu\n", len);
EVP_CIPHER_CTX_set_cipher_data(ctx, cp_ctx->sw_ctx_cipher_data);
retVal = EVP_CIPHER_meth_get_do_cipher(GET_SW_CHACHA_CTX)
(ctx, out, in, len);
EVP_CIPHER_CTX_set_cipher_data(ctx, cp_ctx);
if (retVal)
outlen = len;
goto cleanup;
}
# endif
#endif
/* Set chachapoly opdata params and initialise session. */
if (cp_ctx->context_params_set && !cp_ctx->session_init) {
if (!qat_chachapoly_setup_op_params(cp_ctx)) {
WARN("chachapoly operational params setup failed.\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER,
ERR_R_INTERNAL_ERROR);
goto tls_cipher_err;
}
}
/* Actual message length is the input length minus the tag length. */
cipher_len = len - QAT_POLY1305_DIGEST_SIZE;
DEBUG("InputLen %zu, CipherLen %d\n", len, cipher_len);
/* Allocate buffer for HASH and CIPHER operation. */
if (!cp_ctx->qat_svm)
cp_ctx->src_buffer.pData = qaeCryptoMemAlloc(len, __FILE__, __LINE__);
else
cp_ctx->src_buffer.pData = (Cpa8U *)in;
if (cp_ctx->src_buffer.pData == NULL) {
WARN("Unable to allocate memory for TLS header\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, ERR_R_MALLOC_FAILURE);
goto tls_cipher_err;
}
if (!cp_ctx->qat_svm) {
cp_ctx->dst_buffer.pData = cp_ctx->src_buffer.pData;
memcpy(cp_ctx->src_buffer.pData, in, cipher_len);
} else {
cp_ctx->dst_buffer.pData = (Cpa8U *)out;
}
tlv = qat_check_create_local_variables();
if (NULL == tlv) {
WARN("could not create local variables\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, ERR_R_INTERNAL_ERROR);
goto tls_cipher_err;
}
qat_init_op_done(&op_done);
if (op_done.job != NULL) {
if (qat_setup_async_event_notification(op_done.job) == 0) {
WARN("Failed to setup async event notification\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER,
ERR_R_INTERNAL_ERROR);
qat_cleanup_op_done(&op_done);
goto tls_cipher_err;
}
}
cp_ctx->src_buffer.dataLenInBytes = cipher_len;
cp_ctx->pSrcBufferList.pUserData = NULL;
cp_ctx->dst_buffer.dataLenInBytes = cipher_len;
cp_ctx->pDstBufferList.pUserData = NULL;
cp_ctx->opd->sessionCtx = cp_ctx->session_ctx;
/* Set messageLenToCipherInBytes to the cipher buffer length. */
cp_ctx->opd->messageLenToCipherInBytes = cipher_len;
/* Set the offset where the tag need to be written in the destination buffer. */
cp_ctx->opd->hashStartSrcOffsetInBytes = cipher_len;
/* Set AAD */
cp_ctx->opd->pAdditionalAuthData = cp_ctx->tls_aad;
cp_ctx->opd->pDigestResult = cp_ctx->mac_key;
DUMPL("pDigestResult", cp_ctx->opd->pDigestResult, QAT_CHACHA_KEY_SIZE);
DUMPL("AAD Buffer", cp_ctx->opd->pAdditionalAuthData,
cp_ctx->session_data->hashSetupData.authModeSetupData.aadLenInBytes);
OPENSSL_cleanse(cp_ctx->opd->pIv, QAT_CHACHA20_POLY1305_MAX_IVLEN);
memcpy(cp_ctx->opd->pIv, cp_ctx->derived_iv, QAT_CHACHA20_POLY1305_MAX_IVLEN);
if (!is_instance_available(cp_ctx->inst_num)) {
WARN("QAT instance %d not available.\n", cp_ctx->inst_num);
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, ERR_R_INTERNAL_ERROR);
if (op_done.job != NULL)
qat_clear_async_event_notification(op_done.job);
qat_cleanup_op_done(&op_done);
goto tls_cipher_err;
}
DUMP_CP_PERFORM_OP(qat_instance_handles[cp_ctx->inst_num], cp_ctx->opd,
cp_ctx->pSrcBufferList, cp_ctx->pDstBufferList);
status = qat_sym_perform_op(cp_ctx->inst_num, &op_done, cp_ctx->opd,
&(cp_ctx->pSrcBufferList),
&(cp_ctx->pDstBufferList),
&(cp_ctx->session_data->verifyDigest));
if (status != CPA_STATUS_SUCCESS) {
if (((status == CPA_STATUS_RESTARTING) || (status == CPA_STATUS_FAIL))) {
CRYPTO_QAT_LOG("Failed to submit request to qat inst_num %d device_id %d - %s\n",
cp_ctx->inst_num,
qat_instance_details[cp_ctx->inst_num].qat_instance_info.physInstId.packageId, __func__);
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, ERR_R_INTERNAL_ERROR);
} else if (status == CPA_STATUS_UNSUPPORTED) {
WARN("Algorithm type unsupported in QAT_HW\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, QAT_R_ALGO_TYPE_UNSUPPORTED);
}
if (op_done.job != NULL)
qat_clear_async_event_notification(op_done.job);
qat_cleanup_op_done(&op_done);
goto tls_cipher_err;
}
QAT_INC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (qat_use_signals()) {
if (tlv->localOpsInFlight == 1) {
if (sem_post(&hw_polling_thread_sem) != 0) {
WARN("hw sem_post failed!, hw_polling_thread_sem address: %p.\n",
&hw_polling_thread_sem);
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER,
ERR_R_INTERNAL_ERROR);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
goto tls_cipher_err;
}
}
}
if (enable_heuristic_polling) {
QAT_ATOMIC_INC(num_cipher_pipeline_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, ASYNC_STATUS_OK)) == 0)
sched_yield();
} else {
sched_yield();
}
} while (!op_done.flag ||
QAT_CHK_JOB_RESUMED_UNEXPECTEDLY(job_ret));
DUMP_CP_PERFORM_OP_OUTPUT(&(cp_ctx->session_data->verifyDigest),
cp_ctx->pDstBufferList);
QAT_DEC_IN_FLIGHT_REQS(num_requests_in_flight, tlv);
if (enc) {
outlen = len;
DEBUG("Encryption succeeded.\n");
} else {
if (op_done.verifyResult != CPA_TRUE) {
WARN("Verification of result failed\n");
QATerr(QAT_F_QAT_CHACHA20_POLY1305_TLS_CIPHER, ERR_R_INTERNAL_ERROR);
if (op_done.status == CPA_STATUS_FAIL) {
CRYPTO_QAT_LOG("Verification of result failed for qat inst_num %d device_id %d - %s\n",
cp_ctx->inst_num,
qat_instance_details[cp_ctx->inst_num].qat_instance_info.physInstId.packageId, __func__);
qat_cleanup_op_done(&op_done);
goto tls_cipher_err;
}
}
outlen = cipher_len;