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rte_openssl_pmd.c
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rte_openssl_pmd.c
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016-2017 Intel Corporation
*/
#include <rte_common.h>
#include <rte_hexdump.h>
#include <rte_cryptodev.h>
#include <cryptodev_pmd.h>
#include <rte_bus_vdev.h>
#include <rte_malloc.h>
#include <rte_cpuflags.h>
#include <openssl/hmac.h>
#include <openssl/evp.h>
#include "openssl_pmd_private.h"
#include "compat.h"
#define DES_BLOCK_SIZE 8
static uint8_t cryptodev_driver_id;
#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
static HMAC_CTX *HMAC_CTX_new(void)
{
HMAC_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
if (ctx != NULL)
HMAC_CTX_init(ctx);
return ctx;
}
static void HMAC_CTX_free(HMAC_CTX *ctx)
{
if (ctx != NULL) {
HMAC_CTX_cleanup(ctx);
OPENSSL_free(ctx);
}
}
#endif
static int cryptodev_openssl_remove(struct rte_vdev_device *vdev);
/*----------------------------------------------------------------------------*/
/**
* Increment counter by 1
* Counter is 64 bit array, big-endian
*/
static void
ctr_inc(uint8_t *ctr)
{
uint64_t *ctr64 = (uint64_t *)ctr;
*ctr64 = __builtin_bswap64(*ctr64);
(*ctr64)++;
*ctr64 = __builtin_bswap64(*ctr64);
}
/*
*------------------------------------------------------------------------------
* Session Prepare
*------------------------------------------------------------------------------
*/
/** Get xform chain order */
static enum openssl_chain_order
openssl_get_chain_order(const struct rte_crypto_sym_xform *xform)
{
enum openssl_chain_order res = OPENSSL_CHAIN_NOT_SUPPORTED;
if (xform != NULL) {
if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
if (xform->next == NULL)
res = OPENSSL_CHAIN_ONLY_AUTH;
else if (xform->next->type ==
RTE_CRYPTO_SYM_XFORM_CIPHER)
res = OPENSSL_CHAIN_AUTH_CIPHER;
}
if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
if (xform->next == NULL)
res = OPENSSL_CHAIN_ONLY_CIPHER;
else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
res = OPENSSL_CHAIN_CIPHER_AUTH;
}
if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD)
res = OPENSSL_CHAIN_COMBINED;
}
return res;
}
/** Get session cipher key from input cipher key */
static void
get_cipher_key(const uint8_t *input_key, int keylen, uint8_t *session_key)
{
memcpy(session_key, input_key, keylen);
}
/** Get key ede 24 bytes standard from input key */
static int
get_cipher_key_ede(const uint8_t *key, int keylen, uint8_t *key_ede)
{
int res = 0;
/* Initialize keys - 24 bytes: [key1-key2-key3] */
switch (keylen) {
case 24:
memcpy(key_ede, key, 24);
break;
case 16:
/* K3 = K1 */
memcpy(key_ede, key, 16);
memcpy(key_ede + 16, key, 8);
break;
case 8:
/* K1 = K2 = K3 (DES compatibility) */
memcpy(key_ede, key, 8);
memcpy(key_ede + 8, key, 8);
memcpy(key_ede + 16, key, 8);
break;
default:
OPENSSL_LOG(ERR, "Unsupported key size");
res = -EINVAL;
}
return res;
}
/** Get adequate openssl function for input cipher algorithm */
static uint8_t
get_cipher_algo(enum rte_crypto_cipher_algorithm sess_algo, size_t keylen,
const EVP_CIPHER **algo)
{
int res = 0;
if (algo != NULL) {
switch (sess_algo) {
case RTE_CRYPTO_CIPHER_3DES_CBC:
switch (keylen) {
case 8:
*algo = EVP_des_cbc();
break;
case 16:
*algo = EVP_des_ede_cbc();
break;
case 24:
*algo = EVP_des_ede3_cbc();
break;
default:
res = -EINVAL;
}
break;
case RTE_CRYPTO_CIPHER_3DES_CTR:
break;
case RTE_CRYPTO_CIPHER_AES_CBC:
switch (keylen) {
case 16:
*algo = EVP_aes_128_cbc();
break;
case 24:
*algo = EVP_aes_192_cbc();
break;
case 32:
*algo = EVP_aes_256_cbc();
break;
default:
res = -EINVAL;
}
break;
case RTE_CRYPTO_CIPHER_AES_CTR:
switch (keylen) {
case 16:
*algo = EVP_aes_128_ctr();
break;
case 24:
*algo = EVP_aes_192_ctr();
break;
case 32:
*algo = EVP_aes_256_ctr();
break;
default:
res = -EINVAL;
}
break;
default:
res = -EINVAL;
break;
}
} else {
res = -EINVAL;
}
return res;
}
/** Get adequate openssl function for input auth algorithm */
static uint8_t
get_auth_algo(enum rte_crypto_auth_algorithm sessalgo,
const EVP_MD **algo)
{
int res = 0;
if (algo != NULL) {
switch (sessalgo) {
case RTE_CRYPTO_AUTH_MD5:
case RTE_CRYPTO_AUTH_MD5_HMAC:
*algo = EVP_md5();
break;
case RTE_CRYPTO_AUTH_SHA1:
case RTE_CRYPTO_AUTH_SHA1_HMAC:
*algo = EVP_sha1();
break;
case RTE_CRYPTO_AUTH_SHA224:
case RTE_CRYPTO_AUTH_SHA224_HMAC:
*algo = EVP_sha224();
break;
case RTE_CRYPTO_AUTH_SHA256:
case RTE_CRYPTO_AUTH_SHA256_HMAC:
*algo = EVP_sha256();
break;
case RTE_CRYPTO_AUTH_SHA384:
case RTE_CRYPTO_AUTH_SHA384_HMAC:
*algo = EVP_sha384();
break;
case RTE_CRYPTO_AUTH_SHA512:
case RTE_CRYPTO_AUTH_SHA512_HMAC:
*algo = EVP_sha512();
break;
default:
res = -EINVAL;
break;
}
} else {
res = -EINVAL;
}
return res;
}
/** Get adequate openssl function for input cipher algorithm */
static uint8_t
get_aead_algo(enum rte_crypto_aead_algorithm sess_algo, size_t keylen,
const EVP_CIPHER **algo)
{
int res = 0;
if (algo != NULL) {
switch (sess_algo) {
case RTE_CRYPTO_AEAD_AES_GCM:
switch (keylen) {
case 16:
*algo = EVP_aes_128_gcm();
break;
case 24:
*algo = EVP_aes_192_gcm();
break;
case 32:
*algo = EVP_aes_256_gcm();
break;
default:
res = -EINVAL;
}
break;
case RTE_CRYPTO_AEAD_AES_CCM:
switch (keylen) {
case 16:
*algo = EVP_aes_128_ccm();
break;
case 24:
*algo = EVP_aes_192_ccm();
break;
case 32:
*algo = EVP_aes_256_ccm();
break;
default:
res = -EINVAL;
}
break;
default:
res = -EINVAL;
break;
}
} else {
res = -EINVAL;
}
return res;
}
/* Set session AEAD encryption parameters */
static int
openssl_set_sess_aead_enc_param(struct openssl_session *sess,
enum rte_crypto_aead_algorithm algo,
uint8_t tag_len, const uint8_t *key)
{
int iv_type = 0;
unsigned int do_ccm;
sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
sess->auth.operation = RTE_CRYPTO_AUTH_OP_GENERATE;
/* Select AEAD algo */
switch (algo) {
case RTE_CRYPTO_AEAD_AES_GCM:
iv_type = EVP_CTRL_GCM_SET_IVLEN;
if (tag_len != 16)
return -EINVAL;
do_ccm = 0;
break;
case RTE_CRYPTO_AEAD_AES_CCM:
iv_type = EVP_CTRL_CCM_SET_IVLEN;
/* Digest size can be 4, 6, 8, 10, 12, 14 or 16 bytes */
if (tag_len < 4 || tag_len > 16 || (tag_len & 1) == 1)
return -EINVAL;
do_ccm = 1;
break;
default:
return -ENOTSUP;
}
sess->cipher.mode = OPENSSL_CIPHER_LIB;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
if (get_aead_algo(algo, sess->cipher.key.length,
&sess->cipher.evp_algo) != 0)
return -EINVAL;
get_cipher_key(key, sess->cipher.key.length, sess->cipher.key.data);
sess->chain_order = OPENSSL_CHAIN_COMBINED;
if (EVP_EncryptInit_ex(sess->cipher.ctx, sess->cipher.evp_algo,
NULL, NULL, NULL) <= 0)
return -EINVAL;
if (EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, iv_type, sess->iv.length,
NULL) <= 0)
return -EINVAL;
if (do_ccm)
EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, EVP_CTRL_CCM_SET_TAG,
tag_len, NULL);
if (EVP_EncryptInit_ex(sess->cipher.ctx, NULL, NULL, key, NULL) <= 0)
return -EINVAL;
return 0;
}
/* Set session AEAD decryption parameters */
static int
openssl_set_sess_aead_dec_param(struct openssl_session *sess,
enum rte_crypto_aead_algorithm algo,
uint8_t tag_len, const uint8_t *key)
{
int iv_type = 0;
unsigned int do_ccm = 0;
sess->cipher.direction = RTE_CRYPTO_CIPHER_OP_DECRYPT;
sess->auth.operation = RTE_CRYPTO_AUTH_OP_VERIFY;
/* Select AEAD algo */
switch (algo) {
case RTE_CRYPTO_AEAD_AES_GCM:
iv_type = EVP_CTRL_GCM_SET_IVLEN;
if (tag_len != 16)
return -EINVAL;
break;
case RTE_CRYPTO_AEAD_AES_CCM:
iv_type = EVP_CTRL_CCM_SET_IVLEN;
/* Digest size can be 4, 6, 8, 10, 12, 14 or 16 bytes */
if (tag_len < 4 || tag_len > 16 || (tag_len & 1) == 1)
return -EINVAL;
do_ccm = 1;
break;
default:
return -ENOTSUP;
}
sess->cipher.mode = OPENSSL_CIPHER_LIB;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
if (get_aead_algo(algo, sess->cipher.key.length,
&sess->cipher.evp_algo) != 0)
return -EINVAL;
get_cipher_key(key, sess->cipher.key.length, sess->cipher.key.data);
sess->chain_order = OPENSSL_CHAIN_COMBINED;
if (EVP_DecryptInit_ex(sess->cipher.ctx, sess->cipher.evp_algo,
NULL, NULL, NULL) <= 0)
return -EINVAL;
if (EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, iv_type,
sess->iv.length, NULL) <= 0)
return -EINVAL;
if (do_ccm)
EVP_CIPHER_CTX_ctrl(sess->cipher.ctx, EVP_CTRL_CCM_SET_TAG,
tag_len, NULL);
if (EVP_DecryptInit_ex(sess->cipher.ctx, NULL, NULL, key, NULL) <= 0)
return -EINVAL;
return 0;
}
/** Set session cipher parameters */
static int
openssl_set_session_cipher_parameters(struct openssl_session *sess,
const struct rte_crypto_sym_xform *xform)
{
/* Select cipher direction */
sess->cipher.direction = xform->cipher.op;
/* Select cipher key */
sess->cipher.key.length = xform->cipher.key.length;
/* Set IV parameters */
sess->iv.offset = xform->cipher.iv.offset;
sess->iv.length = xform->cipher.iv.length;
/* Select cipher algo */
switch (xform->cipher.algo) {
case RTE_CRYPTO_CIPHER_3DES_CBC:
case RTE_CRYPTO_CIPHER_AES_CBC:
case RTE_CRYPTO_CIPHER_AES_CTR:
sess->cipher.mode = OPENSSL_CIPHER_LIB;
sess->cipher.algo = xform->cipher.algo;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
if (get_cipher_algo(sess->cipher.algo, sess->cipher.key.length,
&sess->cipher.evp_algo) != 0)
return -EINVAL;
get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
sess->cipher.key.data);
if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
if (EVP_EncryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
} else if (sess->cipher.direction ==
RTE_CRYPTO_CIPHER_OP_DECRYPT) {
if (EVP_DecryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
}
break;
case RTE_CRYPTO_CIPHER_3DES_CTR:
sess->cipher.mode = OPENSSL_CIPHER_DES3CTR;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
if (get_cipher_key_ede(xform->cipher.key.data,
sess->cipher.key.length,
sess->cipher.key.data) != 0)
return -EINVAL;
break;
case RTE_CRYPTO_CIPHER_DES_CBC:
sess->cipher.algo = xform->cipher.algo;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
sess->cipher.evp_algo = EVP_des_cbc();
get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
sess->cipher.key.data);
if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
if (EVP_EncryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
} else if (sess->cipher.direction ==
RTE_CRYPTO_CIPHER_OP_DECRYPT) {
if (EVP_DecryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
}
break;
case RTE_CRYPTO_CIPHER_DES_DOCSISBPI:
sess->cipher.algo = xform->cipher.algo;
sess->chain_order = OPENSSL_CHAIN_CIPHER_BPI;
sess->cipher.ctx = EVP_CIPHER_CTX_new();
sess->cipher.evp_algo = EVP_des_cbc();
sess->cipher.bpi_ctx = EVP_CIPHER_CTX_new();
/* IV will be ECB encrypted whether direction is encrypt or decrypt */
if (EVP_EncryptInit_ex(sess->cipher.bpi_ctx, EVP_des_ecb(),
NULL, xform->cipher.key.data, 0) != 1)
return -EINVAL;
get_cipher_key(xform->cipher.key.data, sess->cipher.key.length,
sess->cipher.key.data);
if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
if (EVP_EncryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
} else if (sess->cipher.direction ==
RTE_CRYPTO_CIPHER_OP_DECRYPT) {
if (EVP_DecryptInit_ex(sess->cipher.ctx,
sess->cipher.evp_algo,
NULL, xform->cipher.key.data,
NULL) != 1) {
return -EINVAL;
}
}
break;
default:
sess->cipher.algo = RTE_CRYPTO_CIPHER_NULL;
return -ENOTSUP;
}
return 0;
}
/* Set session auth parameters */
static int
openssl_set_session_auth_parameters(struct openssl_session *sess,
const struct rte_crypto_sym_xform *xform)
{
/* Select auth generate/verify */
sess->auth.operation = xform->auth.op;
sess->auth.algo = xform->auth.algo;
sess->auth.digest_length = xform->auth.digest_length;
/* Select auth algo */
switch (xform->auth.algo) {
case RTE_CRYPTO_AUTH_AES_GMAC:
/*
* OpenSSL requires GMAC to be a GCM operation
* with no cipher data length
*/
sess->cipher.key.length = xform->auth.key.length;
/* Set IV parameters */
sess->iv.offset = xform->auth.iv.offset;
sess->iv.length = xform->auth.iv.length;
if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_GENERATE)
return openssl_set_sess_aead_enc_param(sess,
RTE_CRYPTO_AEAD_AES_GCM,
xform->auth.digest_length,
xform->auth.key.data);
else
return openssl_set_sess_aead_dec_param(sess,
RTE_CRYPTO_AEAD_AES_GCM,
xform->auth.digest_length,
xform->auth.key.data);
break;
case RTE_CRYPTO_AUTH_MD5:
case RTE_CRYPTO_AUTH_SHA1:
case RTE_CRYPTO_AUTH_SHA224:
case RTE_CRYPTO_AUTH_SHA256:
case RTE_CRYPTO_AUTH_SHA384:
case RTE_CRYPTO_AUTH_SHA512:
sess->auth.mode = OPENSSL_AUTH_AS_AUTH;
if (get_auth_algo(xform->auth.algo,
&sess->auth.auth.evp_algo) != 0)
return -EINVAL;
sess->auth.auth.ctx = EVP_MD_CTX_create();
break;
case RTE_CRYPTO_AUTH_MD5_HMAC:
case RTE_CRYPTO_AUTH_SHA1_HMAC:
case RTE_CRYPTO_AUTH_SHA224_HMAC:
case RTE_CRYPTO_AUTH_SHA256_HMAC:
case RTE_CRYPTO_AUTH_SHA384_HMAC:
case RTE_CRYPTO_AUTH_SHA512_HMAC:
sess->auth.mode = OPENSSL_AUTH_AS_HMAC;
sess->auth.hmac.ctx = HMAC_CTX_new();
if (get_auth_algo(xform->auth.algo,
&sess->auth.hmac.evp_algo) != 0)
return -EINVAL;
if (HMAC_Init_ex(sess->auth.hmac.ctx,
xform->auth.key.data,
xform->auth.key.length,
sess->auth.hmac.evp_algo, NULL) != 1)
return -EINVAL;
break;
default:
return -ENOTSUP;
}
return 0;
}
/* Set session AEAD parameters */
static int
openssl_set_session_aead_parameters(struct openssl_session *sess,
const struct rte_crypto_sym_xform *xform)
{
/* Select cipher key */
sess->cipher.key.length = xform->aead.key.length;
/* Set IV parameters */
if (xform->aead.algo == RTE_CRYPTO_AEAD_AES_CCM)
/*
* For AES-CCM, the actual IV is placed
* one byte after the start of the IV field,
* according to the API.
*/
sess->iv.offset = xform->aead.iv.offset + 1;
else
sess->iv.offset = xform->aead.iv.offset;
sess->iv.length = xform->aead.iv.length;
sess->auth.aad_length = xform->aead.aad_length;
sess->auth.digest_length = xform->aead.digest_length;
sess->aead_algo = xform->aead.algo;
/* Select cipher direction */
if (xform->aead.op == RTE_CRYPTO_AEAD_OP_ENCRYPT)
return openssl_set_sess_aead_enc_param(sess, xform->aead.algo,
xform->aead.digest_length, xform->aead.key.data);
else
return openssl_set_sess_aead_dec_param(sess, xform->aead.algo,
xform->aead.digest_length, xform->aead.key.data);
}
/** Parse crypto xform chain and set private session parameters */
int
openssl_set_session_parameters(struct openssl_session *sess,
const struct rte_crypto_sym_xform *xform)
{
const struct rte_crypto_sym_xform *cipher_xform = NULL;
const struct rte_crypto_sym_xform *auth_xform = NULL;
const struct rte_crypto_sym_xform *aead_xform = NULL;
int ret;
sess->chain_order = openssl_get_chain_order(xform);
switch (sess->chain_order) {
case OPENSSL_CHAIN_ONLY_CIPHER:
cipher_xform = xform;
break;
case OPENSSL_CHAIN_ONLY_AUTH:
auth_xform = xform;
break;
case OPENSSL_CHAIN_CIPHER_AUTH:
cipher_xform = xform;
auth_xform = xform->next;
break;
case OPENSSL_CHAIN_AUTH_CIPHER:
auth_xform = xform;
cipher_xform = xform->next;
break;
case OPENSSL_CHAIN_COMBINED:
aead_xform = xform;
break;
default:
return -EINVAL;
}
/* Default IV length = 0 */
sess->iv.length = 0;
/* cipher_xform must be check before auth_xform */
if (cipher_xform) {
ret = openssl_set_session_cipher_parameters(
sess, cipher_xform);
if (ret != 0) {
OPENSSL_LOG(ERR,
"Invalid/unsupported cipher parameters");
return ret;
}
}
if (auth_xform) {
ret = openssl_set_session_auth_parameters(sess, auth_xform);
if (ret != 0) {
OPENSSL_LOG(ERR,
"Invalid/unsupported auth parameters");
return ret;
}
}
if (aead_xform) {
ret = openssl_set_session_aead_parameters(sess, aead_xform);
if (ret != 0) {
OPENSSL_LOG(ERR,
"Invalid/unsupported AEAD parameters");
return ret;
}
}
return 0;
}
/** Reset private session parameters */
void
openssl_reset_session(struct openssl_session *sess)
{
EVP_CIPHER_CTX_free(sess->cipher.ctx);
if (sess->chain_order == OPENSSL_CHAIN_CIPHER_BPI)
EVP_CIPHER_CTX_free(sess->cipher.bpi_ctx);
switch (sess->auth.mode) {
case OPENSSL_AUTH_AS_AUTH:
EVP_MD_CTX_destroy(sess->auth.auth.ctx);
break;
case OPENSSL_AUTH_AS_HMAC:
EVP_PKEY_free(sess->auth.hmac.pkey);
HMAC_CTX_free(sess->auth.hmac.ctx);
break;
default:
break;
}
}
/** Provide session for operation */
static void *
get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
{
struct openssl_session *sess = NULL;
struct openssl_asym_session *asym_sess = NULL;
if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
if (op->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC) {
/* get existing session */
if (likely(op->sym->session != NULL))
sess = (struct openssl_session *)
get_sym_session_private_data(
op->sym->session,
cryptodev_driver_id);
} else {
if (likely(op->asym->session != NULL))
asym_sess = (struct openssl_asym_session *)
get_asym_session_private_data(
op->asym->session,
cryptodev_driver_id);
if (asym_sess == NULL)
op->status =
RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
return asym_sess;
}
} else {
/* sessionless asymmetric not supported */
if (op->type == RTE_CRYPTO_OP_TYPE_ASYMMETRIC)
return NULL;
/* provide internal session */
void *_sess = rte_cryptodev_sym_session_create(qp->sess_mp);
void *_sess_private_data = NULL;
if (_sess == NULL)
return NULL;
if (rte_mempool_get(qp->sess_mp_priv,
(void **)&_sess_private_data))
return NULL;
sess = (struct openssl_session *)_sess_private_data;
if (unlikely(openssl_set_session_parameters(sess,
op->sym->xform) != 0)) {
rte_mempool_put(qp->sess_mp, _sess);
rte_mempool_put(qp->sess_mp_priv, _sess_private_data);
sess = NULL;
}
op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
set_sym_session_private_data(op->sym->session,
cryptodev_driver_id, _sess_private_data);
}
if (sess == NULL)
op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
return sess;
}
/*
*------------------------------------------------------------------------------
* Process Operations
*------------------------------------------------------------------------------
*/
static inline int
process_openssl_encryption_update(struct rte_mbuf *mbuf_src, int offset,
uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx, uint8_t inplace)
{
struct rte_mbuf *m;
int dstlen;
int l, n = srclen;
uint8_t *src, temp[EVP_CIPHER_CTX_block_size(ctx)];
for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
m = m->next)
offset -= rte_pktmbuf_data_len(m);
if (m == 0)
return -1;
src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
if (inplace)
*dst = src;
l = rte_pktmbuf_data_len(m) - offset;
if (srclen <= l) {
if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
return -1;
*dst += l;
return 0;
}
if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
return -1;
*dst += dstlen;
n -= l;
for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
uint8_t diff = l - dstlen, rem;
src = rte_pktmbuf_mtod(m, uint8_t *);
l = RTE_MIN(rte_pktmbuf_data_len(m), n);
if (diff && inplace) {
rem = RTE_MIN(l,
(EVP_CIPHER_CTX_block_size(ctx) - diff));
if (EVP_EncryptUpdate(ctx, temp,
&dstlen, src, rem) <= 0)
return -1;
n -= rem;
rte_memcpy(*dst, temp, diff);
rte_memcpy(src, temp + diff, rem);
src += rem;
l -= rem;
}
if (inplace)
*dst = src;
if (EVP_EncryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
return -1;
*dst += dstlen;
n -= l;
}
return 0;
}
static inline int
process_openssl_decryption_update(struct rte_mbuf *mbuf_src, int offset,
uint8_t **dst, int srclen, EVP_CIPHER_CTX *ctx, uint8_t inplace)
{
struct rte_mbuf *m;
int dstlen;
int l, n = srclen;
uint8_t *src, temp[EVP_CIPHER_CTX_block_size(ctx)];
for (m = mbuf_src; m != NULL && offset > rte_pktmbuf_data_len(m);
m = m->next)
offset -= rte_pktmbuf_data_len(m);
if (m == 0)
return -1;
src = rte_pktmbuf_mtod_offset(m, uint8_t *, offset);
if (inplace)
*dst = src;
l = rte_pktmbuf_data_len(m) - offset;
if (srclen <= l) {
if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, srclen) <= 0)
return -1;
*dst += l;
return 0;
}
if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
return -1;
*dst += dstlen;
n -= l;
for (m = m->next; (m != NULL) && (n > 0); m = m->next) {
uint8_t diff = l - dstlen, rem;
src = rte_pktmbuf_mtod(m, uint8_t *);
l = RTE_MIN(rte_pktmbuf_data_len(m), n);
if (diff && inplace) {
rem = RTE_MIN(l,
(EVP_CIPHER_CTX_block_size(ctx) - diff));
if (EVP_DecryptUpdate(ctx, temp,
&dstlen, src, rem) <= 0)
return -1;
n -= rem;
rte_memcpy(*dst, temp, diff);
rte_memcpy(src, temp + diff, rem);
src += rem;
l -= rem;
}
if (inplace)
*dst = src;
if (EVP_DecryptUpdate(ctx, *dst, &dstlen, src, l) <= 0)
return -1;
*dst += dstlen;
n -= l;
}
return 0;
}
/** Process standard openssl cipher encryption */
static int
process_openssl_cipher_encrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
int offset, uint8_t *iv, int srclen, EVP_CIPHER_CTX *ctx,
uint8_t inplace)
{
int totlen;
if (EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
goto process_cipher_encrypt_err;
EVP_CIPHER_CTX_set_padding(ctx, 0);
if (process_openssl_encryption_update(mbuf_src, offset, &dst,
srclen, ctx, inplace))
goto process_cipher_encrypt_err;
if (EVP_EncryptFinal_ex(ctx, dst, &totlen) <= 0)
goto process_cipher_encrypt_err;
return 0;
process_cipher_encrypt_err:
OPENSSL_LOG(ERR, "Process openssl cipher encrypt failed");
return -EINVAL;
}
/** Process standard openssl cipher encryption */
static int
process_openssl_cipher_bpi_encrypt(uint8_t *src, uint8_t *dst,
uint8_t *iv, int srclen,
EVP_CIPHER_CTX *ctx)
{
uint8_t i;
uint8_t encrypted_iv[DES_BLOCK_SIZE];
int encrypted_ivlen;
if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen,
iv, DES_BLOCK_SIZE) <= 0)
goto process_cipher_encrypt_err;
for (i = 0; i < srclen; i++)
*(dst + i) = *(src + i) ^ (encrypted_iv[i]);
return 0;
process_cipher_encrypt_err:
OPENSSL_LOG(ERR, "Process openssl cipher bpi encrypt failed");
return -EINVAL;
}
/** Process standard openssl cipher decryption */
static int
process_openssl_cipher_decrypt(struct rte_mbuf *mbuf_src, uint8_t *dst,
int offset, uint8_t *iv, int srclen, EVP_CIPHER_CTX *ctx,
uint8_t inplace)
{
int totlen;
if (EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, iv) <= 0)
goto process_cipher_decrypt_err;
EVP_CIPHER_CTX_set_padding(ctx, 0);
if (process_openssl_decryption_update(mbuf_src, offset, &dst,
srclen, ctx, inplace))
goto process_cipher_decrypt_err;
if (EVP_DecryptFinal_ex(ctx, dst, &totlen) <= 0)
goto process_cipher_decrypt_err;
return 0;
process_cipher_decrypt_err:
OPENSSL_LOG(ERR, "Process openssl cipher decrypt failed");
return -EINVAL;
}
/** Process cipher des 3 ctr encryption, decryption algorithm */
static int