/**
* Initialize the state descriptor for the specified hash algorithm.
*
* An internal routine to allocate the hash-specific state in \a hdesc for
* use with cfs_crypto_hash_digest() to compute the hash of a single message,
* though possibly in multiple chunks. The descriptor internal state should
* be freed with cfs_crypto_hash_final().
*
* \param[in] hash_alg hash algorithm id (CFS_HASH_ALG_*)
* \param[out] type pointer to the hash description in hash_types[] array
* \param[in,out] req ahash request to be initialized
* \param[in] key initial hash value/state, NULL to use default value
* \param[in] key_len length of \a key
*
* \retval 0 on success
* \retval negative errno on failure
*/
static int cfs_crypto_hash_alloc(enum cfs_crypto_hash_alg hash_alg,
const struct cfs_crypto_hash_type **type,
struct ahash_request **req,
unsigned char *key,
unsigned int key_len)
{
struct crypto_ahash *tfm;
int err = 0;
*type = cfs_crypto_hash_type(hash_alg);
if (*type == NULL) {
CWARN("Unsupported hash algorithm id = %d, max id is %d\n",
hash_alg, CFS_HASH_ALG_MAX);
return -EINVAL;
}
tfm = crypto_alloc_ahash((*type)->cht_name, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
CDEBUG(D_INFO, "Failed to alloc crypto hash %s\n",
(*type)->cht_name);
return PTR_ERR(tfm);
}
*req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!*req) {
CDEBUG(D_INFO, "Failed to alloc ahash_request for %s\n",
(*type)->cht_name);
crypto_free_ahash(tfm);
return -ENOMEM;
}
ahash_request_set_callback(*req, 0, NULL, NULL);
if (key)
err = crypto_ahash_setkey(tfm, key, key_len);
else if ((*type)->cht_key != 0)
err = crypto_ahash_setkey(tfm,
(unsigned char *)&((*type)->cht_key),
(*type)->cht_size);
if (err != 0) {
ahash_request_free(*req);
crypto_free_ahash(tfm);
return err;
}
CDEBUG(D_INFO, "Using crypto hash: %s (%s) speed %d MB/s\n",
crypto_ahash_alg_name(tfm), crypto_ahash_driver_name(tfm),
cfs_crypto_hash_speeds[hash_alg]);
err = crypto_ahash_init(*req);
if (err) {
ahash_request_free(*req);
crypto_free_ahash(tfm);
}
return err;
}
int cryptodev_hash_init(struct hash_data *hdata, const char *alg_name,
int hmac_mode, void *mackey, size_t mackeylen)
{
int ret;
hdata->async.s = crypto_alloc_ahash(alg_name, 0, 0);
if (unlikely(IS_ERR(hdata->async.s))) {
ddebug(1, "Failed to load transform for %s", alg_name);
return -EINVAL;
}
/* Copy the key from user and set to TFM. */
if (hmac_mode != 0) {
ret = crypto_ahash_setkey(hdata->async.s, mackey, mackeylen);
if (unlikely(ret)) {
ddebug(1, "Setting hmac key failed for %s-%zu.",
alg_name, mackeylen*8);
ret = -EINVAL;
goto error;
}
}
hdata->digestsize = crypto_ahash_digestsize(hdata->async.s);
hdata->alignmask = crypto_ahash_alignmask(hdata->async.s);
hdata->async.result = kzalloc(sizeof(*hdata->async.result), GFP_KERNEL);
if (unlikely(!hdata->async.result)) {
ret = -ENOMEM;
goto error;
}
init_completion(&hdata->async.result->completion);
hdata->async.request = ahash_request_alloc(hdata->async.s, GFP_KERNEL);
if (unlikely(!hdata->async.request)) {
derr(0, "error allocating async crypto request");
ret = -ENOMEM;
goto error;
}
ahash_request_set_callback(hdata->async.request,
CRYPTO_TFM_REQ_MAY_BACKLOG,
cryptodev_complete, hdata->async.result);
ret = crypto_ahash_init(hdata->async.request);
if (unlikely(ret)) {
derr(0, "error in crypto_hash_init()");
goto error_request;
}
hdata->init = 1;
return 0;
error_request:
ahash_request_free(hdata->async.request);
error:
kfree(hdata->async.result);
crypto_free_ahash(hdata->async.s);
return ret;
}
static int ghash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
struct ghash_async_ctx *ctx = crypto_ahash_ctx(tfm);
struct crypto_ahash *child = &ctx->cryptd_tfm->base;
int err;
crypto_ahash_clear_flags(child, CRYPTO_TFM_REQ_MASK);
crypto_ahash_set_flags(child, crypto_ahash_get_flags(tfm)
& CRYPTO_TFM_REQ_MASK);
err = crypto_ahash_setkey(child, key, keylen);
crypto_ahash_set_flags(tfm, crypto_ahash_get_flags(child)
& CRYPTO_TFM_RES_MASK);
return 0;
}
int wcnss_wlan_crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
return crypto_ahash_setkey(tfm, key, keylen);
}
static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
unsigned int keylen)
{
struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
struct crypto_ahash *ghash = ctx->ghash;
struct crypto_ablkcipher *ctr = ctx->ctr;
struct {
be128 hash;
u8 iv[8];
struct crypto_gcm_setkey_result result;
struct scatterlist sg[1];
struct ablkcipher_request req;
} *data;
int err;
crypto_ablkcipher_clear_flags(ctr, CRYPTO_TFM_REQ_MASK);
crypto_ablkcipher_set_flags(ctr, crypto_aead_get_flags(aead) &
CRYPTO_TFM_REQ_MASK);
err = crypto_ablkcipher_setkey(ctr, key, keylen);
if (err)
return err;
crypto_aead_set_flags(aead, crypto_ablkcipher_get_flags(ctr) &
CRYPTO_TFM_RES_MASK);
data = kzalloc(sizeof(*data) + crypto_ablkcipher_reqsize(ctr),
GFP_KERNEL);
if (!data)
return -ENOMEM;
init_completion(&data->result.completion);
sg_init_one(data->sg, &data->hash, sizeof(data->hash));
ablkcipher_request_set_tfm(&data->req, ctr);
ablkcipher_request_set_callback(&data->req, CRYPTO_TFM_REQ_MAY_SLEEP |
CRYPTO_TFM_REQ_MAY_BACKLOG,
crypto_gcm_setkey_done,
&data->result);
ablkcipher_request_set_crypt(&data->req, data->sg, data->sg,
sizeof(data->hash), data->iv);
err = crypto_ablkcipher_encrypt(&data->req);
if (err == -EINPROGRESS || err == -EBUSY) {
err = wait_for_completion_interruptible(
&data->result.completion);
if (!err)
err = data->result.err;
}
if (err)
goto out;
crypto_ahash_clear_flags(ghash, CRYPTO_TFM_REQ_MASK);
crypto_ahash_set_flags(ghash, crypto_aead_get_flags(aead) &
CRYPTO_TFM_REQ_MASK);
err = crypto_ahash_setkey(ghash, (u8 *)&data->hash, sizeof(be128));
crypto_aead_set_flags(aead, crypto_ahash_get_flags(ghash) &
CRYPTO_TFM_RES_MASK);
out:
kfree(data);
return err;
}
int hmac_md5(v_U8_t *key, v_U8_t ksize, char *plaintext, v_U8_t psize,
v_U8_t *output, v_U8_t outlen)
{
int ret = 0;
struct crypto_ahash *tfm;
struct scatterlist sg;
struct ahash_request *req;
struct hmac_md5_result tresult = {.err = 0};
void *hash_buff = NULL;
unsigned char hash_result[64];
int i;
memset(output, 0, outlen);
init_completion(&tresult.completion);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
tfm = crypto_alloc_ahash("hmac(md5)", CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
#else
tfm = wcnss_wlan_crypto_alloc_ahash("hmac(md5)", CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
#endif
if (IS_ERR(tfm)) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "crypto_alloc_ahash failed");
ret = PTR_ERR(tfm);
goto err_tfm;
}
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "failed to allocate request for hmac(md5)");
ret = -ENOMEM;
goto err_req;
}
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
hmac_md5_complete, &tresult);
hash_buff = kzalloc(psize, GFP_KERNEL);
if (!hash_buff) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "failed to kzalloc hash_buff");
ret = -ENOMEM;
goto err_hash_buf;
}
memset(hash_result, 0, 64);
vos_mem_copy(hash_buff, plaintext, psize);
sg_init_one(&sg, hash_buff, psize);
if (ksize) {
crypto_ahash_clear_flags(tfm, ~0);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
ret = crypto_ahash_setkey(tfm, key, ksize);
#else
ret = wcnss_wlan_crypto_ahash_setkey(tfm, key, ksize);
#endif
if (ret) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "crypto_ahash_setkey failed");
goto err_setkey;
}
}
ahash_request_set_crypt(req, &sg, hash_result, psize);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
ret = crypto_ahash_digest(req);
#else
ret = wcnss_wlan_crypto_ahash_digest(req);
#endif
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "ret 0x%x", ret);
switch (ret) {
case 0:
for (i=0; i< outlen; i++)
output[i] = hash_result[i];
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(&tresult.completion);
if (!ret && !tresult.err) {
for (i = 0; i < outlen; i++)
output[i] = hash_result[i];
INIT_COMPLETION(tresult.completion);
break;
} else {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "wait_for_completion_interruptible failed");
if (!ret)
ret = tresult.err;
goto out;
}
default:
goto out;
}
out:
err_setkey:
kfree(hash_buff);
err_hash_buf:
ahash_request_free(req);
err_req:
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
crypto_free_ahash(tfm);
#else
wcnss_wlan_crypto_free_ahash(tfm);
#endif
err_tfm:
return ret;
}
VOS_STATUS vos_md5_hmac_str(v_U32_t cryptHandle, /* Handle */
v_U8_t *pText, /* pointer to data stream */
v_U32_t textLen, /* length of data stream */
v_U8_t *pKey, /* pointer to authentication key */
v_U32_t keyLen, /* length of authentication key */
v_U8_t digest[VOS_DIGEST_MD5_SIZE])/* caller digest to be filled in */
{
int ret = 0;
ret = hmac_md5(
pKey, //v_U8_t *key,
(v_U8_t) keyLen, //v_U8_t ksize,
(char *)pText, //char *plaintext,
(v_U8_t) textLen, //v_U8_t psize,
digest, //v_U8_t *output,
VOS_DIGEST_MD5_SIZE //v_U8_t outlen
);
if (ret != 0) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR,"hmac_md5() call failed");
return VOS_STATUS_E_FAULT;
}
return VOS_STATUS_SUCCESS;
}
int hmac_sha1(v_U8_t *key, v_U8_t ksize, char *plaintext, v_U8_t psize,
v_U8_t *output, v_U8_t outlen)
{
int ret = 0;
struct crypto_ahash *tfm;
struct scatterlist sg;
struct ahash_request *req;
struct hmac_sha1_result tresult;
void *hash_buff = NULL;
unsigned char hash_result[64];
int i;
memset(output, 0, outlen);
init_completion(&tresult.completion);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
tfm = crypto_alloc_ahash("hmac(sha1)", CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
#else
tfm = wcnss_wlan_crypto_alloc_ahash("hmac(sha1)", CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
#endif
if (IS_ERR(tfm)) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "crypto_alloc_ahash failed");
ret = PTR_ERR(tfm);
goto err_tfm;
}
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "failed to allocate request for hmac(sha1)");
ret = -ENOMEM;
goto err_req;
}
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
hmac_sha1_complete, &tresult);
hash_buff = kzalloc(psize, GFP_KERNEL);
if (!hash_buff) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "failed to kzalloc hash_buff");
ret = -ENOMEM;
goto err_hash_buf;
}
memset(hash_result, 0, 64);
vos_mem_copy(hash_buff, plaintext, psize);
sg_init_one(&sg, hash_buff, psize);
if (ksize) {
crypto_ahash_clear_flags(tfm, ~0);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
ret = crypto_ahash_setkey(tfm, key, ksize);
#else
ret = wcnss_wlan_crypto_ahash_setkey(tfm, key, ksize);
#endif
if (ret) {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "crypto_ahash_setkey failed");
goto err_setkey;
}
}
ahash_request_set_crypt(req, &sg, hash_result, psize);
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
ret = crypto_ahash_digest(req);
#else
ret = wcnss_wlan_crypto_ahash_digest(req);
#endif
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "ret 0x%x", ret);
switch (ret) {
case 0:
for (i=0; i< outlen; i++)
output[i] = hash_result[i];
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(&tresult.completion);
if (!ret && !tresult.err) {
for (i = 0; i < outlen; i++)
output[i] = hash_result[i];
INIT_COMPLETION(tresult.completion);
break;
} else {
VOS_TRACE(VOS_MODULE_ID_VOSS,VOS_TRACE_LEVEL_ERROR, "wait_for_completion_interruptible failed");
if (!ret)
ret = tresult.err;
goto out;
}
default:
goto out;
}
out:
err_setkey:
kfree(hash_buff);
err_hash_buf:
ahash_request_free(req);
err_req:
#if !defined(CONFIG_CNSS) && (defined(HIF_USB) || defined(HIF_SDIO))
crypto_free_ahash(tfm);
#else
wcnss_wlan_crypto_free_ahash(tfm);
#endif
err_tfm:
return ret;
}
/*
* Sha/HMAC self tests
*/
int _fips_qcrypto_sha_selftest(struct fips_selftest_data *selftest_d)
{
int rc = 0, err, tv_index = 0, num_tv;
char *k_out_buf = NULL;
struct scatterlist fips_sg;
struct crypto_ahash *tfm;
struct ahash_request *ahash_req;
struct _fips_completion fips_completion;
struct _fips_test_vector_sha_hmac tv_sha_hmac;
num_tv = (sizeof(fips_test_vector_sha_hmac)) /
(sizeof(struct _fips_test_vector_sha_hmac));
/* One-by-one testing */
for (tv_index = 0; tv_index < num_tv; tv_index++) {
memcpy(&tv_sha_hmac, &fips_test_vector_sha_hmac[tv_index],
(sizeof(struct _fips_test_vector_sha_hmac)));
k_out_buf = kzalloc(tv_sha_hmac.diglen, GFP_KERNEL);
if (k_out_buf == NULL) {
pr_err("qcrypto: Failed to allocate memory for k_out_buf %ld\n",
PTR_ERR(k_out_buf));
return -ENOMEM;
}
memset(k_out_buf, 0, tv_sha_hmac.diglen);
init_completion(&fips_completion.completion);
/* use_sw flags are set in dtsi file which makes
default Linux API calls to go to s/w crypto instead
of h/w crypto. This code makes sure that all selftests
calls always go to h/w, independent of DTSI flags. */
if (tv_sha_hmac.klen == 0) {
if (selftest_d->prefix_ahash_algo)
if (_fips_get_alg_cra_name(tv_sha_hmac
.hash_alg, selftest_d->algo_prefix,
strlen(tv_sha_hmac.hash_alg))) {
rc = -1;
pr_err("Algo Name is too long for tv %d\n",
tv_index);
goto clr_buf;
}
} else {
if (selftest_d->prefix_hmac_algo)
if (_fips_get_alg_cra_name(tv_sha_hmac
.hash_alg, selftest_d->algo_prefix,
strlen(tv_sha_hmac.hash_alg))) {
rc = -1;
pr_err("Algo Name is too long for tv %d\n",
tv_index);
goto clr_buf;
}
}
tfm = crypto_alloc_ahash(tv_sha_hmac.hash_alg, 0, 0);
if (IS_ERR(tfm)) {
pr_err("qcrypto: %s algorithm not found\n",
tv_sha_hmac.hash_alg);
rc = PTR_ERR(tfm);
goto clr_buf;
}
ahash_req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!ahash_req) {
pr_err("qcrypto: ahash_request_alloc failed\n");
rc = -ENOMEM;
goto clr_tfm;
}
rc = qcrypto_ahash_set_device(ahash_req, selftest_d->ce_device);
if (rc != 0) {
pr_err("%s qcrypto_cipher_set_device failed with err %d\n",
__func__, rc);
goto clr_ahash_req;
}
ahash_request_set_callback(ahash_req,
CRYPTO_TFM_REQ_MAY_BACKLOG,
_fips_cb, &fips_completion);
sg_init_one(&fips_sg, &tv_sha_hmac.input[0], tv_sha_hmac.ilen);
crypto_ahash_clear_flags(tfm, ~0);
if (tv_sha_hmac.klen != 0) {
rc = crypto_ahash_setkey(tfm, tv_sha_hmac.key,
tv_sha_hmac.klen);
if (rc) {
pr_err("qcrypto: crypto_ahash_setkey failed\n");
goto clr_ahash_req;
}
}
ahash_request_set_crypt(ahash_req, &fips_sg, k_out_buf,
tv_sha_hmac.ilen);
rc = crypto_ahash_digest(ahash_req);
if (rc == -EINPROGRESS || rc == -EBUSY) {
rc = wait_for_completion_interruptible(
&fips_completion.completion);
err = fips_completion.err;
if (!rc && !err) {
INIT_COMPLETION(fips_completion.completion);
} else {
pr_err("qcrypto:SHA: wait_for_completion failed\n");
goto clr_ahash_req;
}
}
if (memcmp(k_out_buf, tv_sha_hmac.digest,
tv_sha_hmac.diglen))
rc = -1;
clr_ahash_req:
ahash_request_free(ahash_req);
clr_tfm:
crypto_free_ahash(tfm);
clr_buf:
kzfree(k_out_buf);
/* For any failure, return error */
if (rc)
return rc;
}
return rc;
}
/**
* Initialize the state descriptor for the specified hash algorithm.
*
* An internal routine to allocate the hash-specific state in \a hdesc for
* use with cfs_crypto_hash_digest() to compute the hash of a single message,
* though possibly in multiple chunks. The descriptor internal state should
* be freed with cfs_crypto_hash_final().
*
* \param[in] hash_alg hash algorithm id (CFS_HASH_ALG_*)
* \param[out] type pointer to the hash description in hash_types[] array
* \param[in,out] req ahash request to be initialized
* \param[in] key initial hash value/state, NULL to use default value
* \param[in] key_len length of \a key
*
* \retval 0 on success
* \retval negative errno on failure
*/
static int cfs_crypto_hash_alloc(enum cfs_crypto_hash_alg hash_alg,
const struct cfs_crypto_hash_type **type,
struct ahash_request **req,
unsigned char *key,
unsigned int key_len)
{
struct crypto_ahash *tfm;
int err = 0;
*type = cfs_crypto_hash_type(hash_alg);
if (!*type) {
CWARN("Unsupported hash algorithm id = %d, max id is %d\n",
hash_alg, CFS_HASH_ALG_MAX);
return -EINVAL;
}
/* Keys are only supported for the hmac version */
if (key && key_len > 0) {
char *algo_name;
algo_name = kasprintf(GFP_KERNEL, "hmac(%s)",
(*type)->cht_name);
if (!algo_name)
return -ENOMEM;
tfm = crypto_alloc_ahash(algo_name, 0, CRYPTO_ALG_ASYNC);
kfree(algo_name);
} else {
tfm = crypto_alloc_ahash((*type)->cht_name, 0,
CRYPTO_ALG_ASYNC);
}
if (IS_ERR(tfm)) {
CDEBUG(D_INFO, "Failed to alloc crypto hash %s\n",
(*type)->cht_name);
return PTR_ERR(tfm);
}
*req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!*req) {
CDEBUG(D_INFO, "Failed to alloc ahash_request for %s\n",
(*type)->cht_name);
GOTO(out_free_tfm, err = -ENOMEM);
}
ahash_request_set_callback(*req, 0, NULL, NULL);
if (key)
err = crypto_ahash_setkey(tfm, key, key_len);
else if ((*type)->cht_key != 0)
err = crypto_ahash_setkey(tfm,
(unsigned char *)&((*type)->cht_key),
(*type)->cht_size);
if (err)
GOTO(out_free_req, err);
CDEBUG(D_INFO, "Using crypto hash: %s (%s) speed %d MB/s\n",
crypto_ahash_alg_name(tfm), crypto_ahash_driver_name(tfm),
cfs_crypto_hash_speeds[hash_alg]);
err = crypto_ahash_init(*req);
if (err) {
out_free_req:
ahash_request_free(*req);
out_free_tfm:
crypto_free_ahash(tfm);
}
return err;
}
static int tegra_crypto_sha(struct tegra_sha_req *sha_req)
{
struct crypto_ahash *tfm;
struct scatterlist sg[1];
char result[64];
struct ahash_request *req;
struct tegra_crypto_completion sha_complete;
void *hash_buff;
unsigned long *xbuf[XBUFSIZE];
int ret = -ENOMEM;
tfm = crypto_alloc_ahash(sha_req->algo, 0, 0);
if (IS_ERR(tfm)) {
printk(KERN_ERR "alg: hash: Failed to load transform for %s: "
"%ld\n", sha_req->algo, PTR_ERR(tfm));
goto out_alloc;
}
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
printk(KERN_ERR "alg: hash: Failed to allocate request for "
"%s\n", sha_req->algo);
goto out_noreq;
}
ret = alloc_bufs(xbuf);
if (ret < 0) {
pr_err("alloc_bufs failed");
goto out_buf;
}
init_completion(&sha_complete.restart);
memset(result, 0, 64);
hash_buff = xbuf[0];
memcpy(hash_buff, sha_req->plaintext, sha_req->plaintext_sz);
sg_init_one(&sg[0], hash_buff, sha_req->plaintext_sz);
if (sha_req->keylen) {
crypto_ahash_clear_flags(tfm, ~0);
ret = crypto_ahash_setkey(tfm, sha_req->key,
sha_req->keylen);
if (ret) {
printk(KERN_ERR "alg: hash: setkey failed on "
" %s: ret=%d\n", sha_req->algo,
-ret);
goto out;
}
}
ahash_request_set_crypt(req, sg, result, sha_req->plaintext_sz);
ret = sha_async_hash_op(req, &sha_complete, crypto_ahash_init(req));
if (ret) {
pr_err("alg: hash: init failed on "
"for %s: ret=%d\n", sha_req->algo, -ret);
goto out;
}
ret = sha_async_hash_op(req, &sha_complete, crypto_ahash_update(req));
if (ret) {
pr_err("alg: hash: update failed on "
"for %s: ret=%d\n", sha_req->algo, -ret);
goto out;
}
ret = sha_async_hash_op(req, &sha_complete, crypto_ahash_final(req));
if (ret) {
pr_err("alg: hash: final failed on "
"for %s: ret=%d\n", sha_req->algo, -ret);
goto out;
}
ret = copy_to_user((void __user *)sha_req->result,
(const void *)result, crypto_ahash_digestsize(tfm));
if (ret) {
ret = -EFAULT;
pr_err("alg: hash: copy_to_user failed (%d) for %s\n",
ret, sha_req->algo);
}
out:
free_bufs(xbuf);
out_buf:
ahash_request_free(req);
out_noreq:
crypto_free_ahash(tfm);
out_alloc:
return ret;
}
static int tegra_crypt_rsa(struct tegra_crypto_ctx *ctx,
struct tegra_rsa_req *rsa_req)
{
struct crypto_ahash *tfm = NULL;
struct ahash_request *req = NULL;
struct scatterlist sg[1];
char *result = NULL;
void *hash_buff;
int ret = 0;
unsigned long *xbuf[XBUFSIZE];
struct tegra_crypto_completion rsa_complete;
switch (rsa_req->algo) {
case TEGRA_RSA512:
req = ahash_request_alloc(ctx->rsa512_tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: hash: Failed to allocate request for rsa512\n");
goto req_fail;
}
tfm = ctx->rsa512_tfm;
break;
case TEGRA_RSA1024:
req = ahash_request_alloc(ctx->rsa1024_tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: hash: Failed to allocate request for rsa1024\n");
goto req_fail;
}
tfm = ctx->rsa1024_tfm;
break;
case TEGRA_RSA1536:
req = ahash_request_alloc(ctx->rsa1536_tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: hash: Failed to allocate request for rsa1536\n");
goto req_fail;
}
tfm = ctx->rsa1536_tfm;
break;
case TEGRA_RSA2048:
req = ahash_request_alloc(ctx->rsa2048_tfm, GFP_KERNEL);
if (!req) {
pr_err("alg: hash: Failed to allocate request for rsa2048\n");
goto req_fail;
}
tfm = ctx->rsa2048_tfm;
break;
default:
goto req_fail;
}
ret = alloc_bufs(xbuf);
if (ret < 0) {
pr_err("alloc_bufs failed");
goto buf_fail;
}
init_completion(&rsa_complete.restart);
result = kzalloc(rsa_req->keylen >> 16, GFP_KERNEL);
if (!result) {
pr_err("\nresult alloc fail\n");
goto result_fail;
}
hash_buff = xbuf[0];
memcpy(hash_buff, rsa_req->message, rsa_req->msg_len);
sg_init_one(&sg[0], hash_buff, rsa_req->msg_len);
if (!(rsa_req->keylen))
goto rsa_fail;
if (!rsa_req->skip_key) {
ret = crypto_ahash_setkey(tfm, rsa_req->key, rsa_req->keylen);
if (ret) {
pr_err("alg: hash: setkey failed\n");
goto rsa_fail;
}
}
ahash_request_set_crypt(req, sg, result, rsa_req->msg_len);
ret = crypto_ahash_digest(req);
if (ret == -EINPROGRESS || ret == -EBUSY) {
ret = wait_for_completion_interruptible(&rsa_complete.restart);
if (!ret)
ret = rsa_complete.req_err;
INIT_COMPLETION(rsa_complete.restart);
}
if (ret) {
pr_err("alg: hash: digest failed\n");
goto rsa_fail;
}
ret = copy_to_user((void __user *)rsa_req->result, (const void *)result,
crypto_ahash_digestsize(tfm));
if (ret) {
ret = -EFAULT;
pr_err("alg: hash: copy_to_user failed (%d)\n", ret);
}
rsa_fail:
kfree(result);
result_fail:
free_bufs(xbuf);
buf_fail:
ahash_request_free(req);
req_fail:
return ret;
}