int tls_sw_fallback_init(struct sock *sk,
struct tls_offload_context_tx *offload_ctx,
struct tls_crypto_info *crypto_info)
{
const u8 *key;
int rc;
offload_ctx->aead_send =
crypto_alloc_aead("gcm(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(offload_ctx->aead_send)) {
rc = PTR_ERR(offload_ctx->aead_send);
pr_err_ratelimited("crypto_alloc_aead failed rc=%d\n", rc);
offload_ctx->aead_send = NULL;
goto err_out;
}
key = ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->key;
rc = crypto_aead_setkey(offload_ctx->aead_send, key,
TLS_CIPHER_AES_GCM_128_KEY_SIZE);
if (rc)
goto free_aead;
rc = crypto_aead_setauthsize(offload_ctx->aead_send,
TLS_CIPHER_AES_GCM_128_TAG_SIZE);
if (rc)
goto free_aead;
return 0;
free_aead:
crypto_free_aead(offload_ctx->aead_send);
err_out:
return rc;
}
struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[])
{
struct crypto_aead *tfm;
int err;
tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return tfm;
err = crypto_aead_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
if (!err)
err = crypto_aead_setauthsize(tfm, IEEE80211_CCMP_MIC_LEN);
if (!err)
return tfm;
crypto_free_aead(tfm);
return ERR_PTR(err);
}
struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[],
size_t key_len,
size_t mic_len)
{
struct crypto_aead *tfm;
int err;
tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return tfm;
err = crypto_aead_setkey(tfm, key, key_len);
if (!err)
err = crypto_aead_setauthsize(tfm, mic_len);
if (!err)
return tfm;
crypto_free_aead(tfm);
return ERR_PTR(err);
}
struct crypto_aead *ieee80211_aes_gcm_key_setup_encrypt(const u8 key[],
size_t key_len)
{
struct crypto_aead *tfm;
int err;
tfm = crypto_alloc_aead("gcm(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return tfm;
err = crypto_aead_setkey(tfm, key, key_len);
if (err)
goto free_aead;
err = crypto_aead_setauthsize(tfm, IEEE80211_GCMP_MIC_LEN);
if (err)
goto free_aead;
return tfm;
free_aead:
crypto_free_aead(tfm);
return ERR_PTR(err);
}
struct simd_aead_alg *simd_aead_create_compat(const char *algname,
const char *drvname,
const char *basename)
{
struct simd_aead_alg *salg;
struct crypto_aead *tfm;
struct aead_alg *ialg;
struct aead_alg *alg;
int err;
tfm = crypto_alloc_aead(basename, CRYPTO_ALG_INTERNAL,
CRYPTO_ALG_INTERNAL | CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return ERR_CAST(tfm);
ialg = crypto_aead_alg(tfm);
salg = kzalloc(sizeof(*salg), GFP_KERNEL);
if (!salg) {
salg = ERR_PTR(-ENOMEM);
goto out_put_tfm;
}
salg->ialg_name = basename;
alg = &salg->alg;
err = -ENAMETOOLONG;
if (snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", algname) >=
CRYPTO_MAX_ALG_NAME)
goto out_free_salg;
if (snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
drvname) >= CRYPTO_MAX_ALG_NAME)
goto out_free_salg;
alg->base.cra_flags = CRYPTO_ALG_ASYNC;
alg->base.cra_priority = ialg->base.cra_priority;
alg->base.cra_blocksize = ialg->base.cra_blocksize;
alg->base.cra_alignmask = ialg->base.cra_alignmask;
alg->base.cra_module = ialg->base.cra_module;
alg->base.cra_ctxsize = sizeof(struct simd_aead_ctx);
alg->ivsize = ialg->ivsize;
alg->maxauthsize = ialg->maxauthsize;
alg->chunksize = ialg->chunksize;
alg->init = simd_aead_init;
alg->exit = simd_aead_exit;
alg->setkey = simd_aead_setkey;
alg->setauthsize = simd_aead_setauthsize;
alg->encrypt = simd_aead_encrypt;
alg->decrypt = simd_aead_decrypt;
err = crypto_register_aead(alg);
if (err)
goto out_free_salg;
out_put_tfm:
crypto_free_aead(tfm);
return salg;
out_free_salg:
kfree(salg);
salg = ERR_PTR(err);
goto out_put_tfm;
}
/*
* AEAD algorithm self tests
*/
int _fips_qcrypto_aead_selftest(struct fips_selftest_data *selftest_d)
{
int rc = 0, err, tv_index, num_tv, authsize, buf_length;
struct crypto_aead *tfm;
struct aead_request *aead_req;
struct _fips_completion fips_completion;
struct scatterlist fips_sg, fips_assoc_sg;
char *k_align_src = NULL;
struct _fips_test_vector_aead tv_aead;
num_tv = (sizeof(fips_test_vector_aead)) /
(sizeof(struct _fips_test_vector_aead));
/* One-by-one testing */
for (tv_index = 0; tv_index < num_tv; tv_index++) {
memcpy(&tv_aead, &fips_test_vector_aead[tv_index],
(sizeof(struct _fips_test_vector_aead)));
if (tv_aead.pln_txt_len > tv_aead.enc_txt_len)
buf_length = tv_aead.pln_txt_len;
else
buf_length = tv_aead.enc_txt_len;
/* Single buffer allocation for in place operation */
k_align_src = kzalloc(buf_length, GFP_KERNEL);
if (k_align_src == NULL) {
pr_err("qcrypto:, Failed to allocate memory for k_align_src %ld\n",
PTR_ERR(k_align_src));
return -ENOMEM;
}
memcpy(&k_align_src[0], tv_aead.pln_txt,
tv_aead.pln_txt_len);
/* 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 (selftest_d->prefix_aead_algo) {
if (_fips_get_alg_cra_name(tv_aead.mod_alg,
selftest_d->algo_prefix,
strlen(tv_aead.mod_alg))) {
rc = -1;
pr_err("Algo Name is too long for tv %d\n",
tv_index);
goto clr_buf;
}
}
tfm = crypto_alloc_aead(tv_aead.mod_alg, 0, 0);
if (IS_ERR(tfm)) {
pr_err("qcrypto: %s algorithm not found\n",
tv_aead.mod_alg);
rc = -ENOMEM;
goto clr_buf;
}
aead_req = aead_request_alloc(tfm, GFP_KERNEL);
if (!aead_req) {
pr_err("qcrypto:aead_request_alloc failed\n");
rc = -ENOMEM;
goto clr_tfm;
}
rc = qcrypto_aead_set_device(aead_req, selftest_d->ce_device);
if (rc != 0) {
pr_err("%s qcrypto_cipher_set_device failed with err %d\n",
__func__, rc);
goto clr_aead_req;
}
init_completion(&fips_completion.completion);
aead_request_set_callback(aead_req,
CRYPTO_TFM_REQ_MAY_BACKLOG,
_fips_cb, &fips_completion);
crypto_aead_clear_flags(tfm, ~0);
rc = crypto_aead_setkey(tfm, tv_aead.key, tv_aead.klen);
if (rc) {
pr_err("qcrypto:crypto_aead_setkey failed\n");
goto clr_aead_req;
}
authsize = abs(tv_aead.enc_txt_len - tv_aead.pln_txt_len);
rc = crypto_aead_setauthsize(tfm, authsize);
if (rc) {
pr_err("qcrypto:crypto_aead_setauthsize failed\n");
goto clr_aead_req;
}
sg_init_one(&fips_sg, k_align_src,
tv_aead.pln_txt_len + authsize);
aead_request_set_crypt(aead_req, &fips_sg, &fips_sg,
tv_aead.pln_txt_len , tv_aead.iv);
sg_init_one(&fips_assoc_sg, tv_aead.assoc, tv_aead.alen);
aead_request_set_assoc(aead_req, &fips_assoc_sg, tv_aead.alen);
/**** Encryption test ****/
rc = crypto_aead_encrypt(aead_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:aead:ENC, wait_for_completion failed\n");
goto clr_aead_req;
}
}
if (memcmp(k_align_src, tv_aead.enc_txt, tv_aead.enc_txt_len)) {
rc = -1;
goto clr_aead_req;
}
/** Decryption test **/
init_completion(&fips_completion.completion);
aead_request_set_callback(aead_req,
CRYPTO_TFM_REQ_MAY_BACKLOG,
_fips_cb, &fips_completion);
crypto_aead_clear_flags(tfm, ~0);
rc = crypto_aead_setkey(tfm, tv_aead.key, tv_aead.klen);
if (rc) {
pr_err("qcrypto:aead:DEC, crypto_aead_setkey failed\n");
goto clr_aead_req;
}
authsize = abs(tv_aead.enc_txt_len - tv_aead.pln_txt_len);
rc = crypto_aead_setauthsize(tfm, authsize);
if (rc) {
pr_err("qcrypto:aead:DEC, crypto_aead_setauthsize failed\n");
goto clr_aead_req;
}
sg_init_one(&fips_sg, k_align_src,
tv_aead.enc_txt_len + authsize);
aead_request_set_crypt(aead_req, &fips_sg, &fips_sg,
tv_aead.enc_txt_len, tv_aead.iv);
sg_init_one(&fips_assoc_sg, tv_aead.assoc, tv_aead.alen);
aead_request_set_assoc(aead_req, &fips_assoc_sg,
tv_aead.alen);
rc = crypto_aead_decrypt(aead_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:aead:DEC, wait_for_completion failed\n");
goto clr_aead_req;
}
}
if (memcmp(k_align_src, tv_aead.pln_txt, tv_aead.pln_txt_len)) {
rc = -1;
goto clr_aead_req;
}
clr_aead_req:
aead_request_free(aead_req);
clr_tfm:
crypto_free_aead(tfm);
clr_buf:
kzfree(k_align_src);
/* In case of any failure, return error */
if (rc)
return rc;
}
return rc;
}
int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx)
{
char keyval[TLS_CIPHER_AES_GCM_128_KEY_SIZE];
struct tls_crypto_info *crypto_info;
struct tls12_crypto_info_aes_gcm_128 *gcm_128_info;
struct tls_sw_context *sw_ctx;
u16 nonce_size, tag_size, iv_size, rec_seq_size;
char *iv, *rec_seq;
int rc = 0;
if (!ctx) {
rc = -EINVAL;
goto out;
}
if (ctx->priv_ctx) {
rc = -EEXIST;
goto out;
}
sw_ctx = kzalloc(sizeof(*sw_ctx), GFP_KERNEL);
if (!sw_ctx) {
rc = -ENOMEM;
goto out;
}
ctx->priv_ctx = (struct tls_offload_context *)sw_ctx;
crypto_info = &ctx->crypto_send;
switch (crypto_info->cipher_type) {
case TLS_CIPHER_AES_GCM_128: {
nonce_size = TLS_CIPHER_AES_GCM_128_IV_SIZE;
tag_size = TLS_CIPHER_AES_GCM_128_TAG_SIZE;
iv_size = TLS_CIPHER_AES_GCM_128_IV_SIZE;
iv = ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->iv;
rec_seq_size = TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE;
rec_seq =
((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->rec_seq;
gcm_128_info =
(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
break;
}
default:
rc = -EINVAL;
goto out;
}
ctx->prepend_size = TLS_HEADER_SIZE + nonce_size;
ctx->tag_size = tag_size;
ctx->overhead_size = ctx->prepend_size + ctx->tag_size;
ctx->iv_size = iv_size;
ctx->iv = kmalloc(iv_size + TLS_CIPHER_AES_GCM_128_SALT_SIZE,
GFP_KERNEL);
if (!ctx->iv) {
rc = -ENOMEM;
goto out;
}
memcpy(ctx->iv, gcm_128_info->salt, TLS_CIPHER_AES_GCM_128_SALT_SIZE);
memcpy(ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, iv, iv_size);
ctx->rec_seq_size = rec_seq_size;
ctx->rec_seq = kmalloc(rec_seq_size, GFP_KERNEL);
if (!ctx->rec_seq) {
rc = -ENOMEM;
goto free_iv;
}
memcpy(ctx->rec_seq, rec_seq, rec_seq_size);
sg_init_table(sw_ctx->sg_encrypted_data,
ARRAY_SIZE(sw_ctx->sg_encrypted_data));
sg_init_table(sw_ctx->sg_plaintext_data,
ARRAY_SIZE(sw_ctx->sg_plaintext_data));
sg_init_table(sw_ctx->sg_aead_in, 2);
sg_set_buf(&sw_ctx->sg_aead_in[0], sw_ctx->aad_space,
sizeof(sw_ctx->aad_space));
sg_unmark_end(&sw_ctx->sg_aead_in[1]);
sg_chain(sw_ctx->sg_aead_in, 2, sw_ctx->sg_plaintext_data);
sg_init_table(sw_ctx->sg_aead_out, 2);
sg_set_buf(&sw_ctx->sg_aead_out[0], sw_ctx->aad_space,
sizeof(sw_ctx->aad_space));
sg_unmark_end(&sw_ctx->sg_aead_out[1]);
sg_chain(sw_ctx->sg_aead_out, 2, sw_ctx->sg_encrypted_data);
if (!sw_ctx->aead_send) {
sw_ctx->aead_send = crypto_alloc_aead("gcm(aes)", 0, 0);
if (IS_ERR(sw_ctx->aead_send)) {
rc = PTR_ERR(sw_ctx->aead_send);
sw_ctx->aead_send = NULL;
goto free_rec_seq;
}
}
ctx->push_pending_record = tls_sw_push_pending_record;
memcpy(keyval, gcm_128_info->key, TLS_CIPHER_AES_GCM_128_KEY_SIZE);
rc = crypto_aead_setkey(sw_ctx->aead_send, keyval,
TLS_CIPHER_AES_GCM_128_KEY_SIZE);
if (rc)
goto free_aead;
rc = crypto_aead_setauthsize(sw_ctx->aead_send, ctx->tag_size);
if (!rc)
goto out;
free_aead:
crypto_free_aead(sw_ctx->aead_send);
sw_ctx->aead_send = NULL;
free_rec_seq:
kfree(ctx->rec_seq);
ctx->rec_seq = NULL;
free_iv:
kfree(ctx->iv);
ctx->iv = NULL;
out:
return rc;
}
int cryptodev_cipher_init(struct cipher_data *out, const char *alg_name,
uint8_t *keyp, size_t keylen, int stream, int aead)
{
int ret;
if (aead == 0) {
struct ablkcipher_alg *alg;
out->async.s = crypto_alloc_ablkcipher(alg_name, 0, 0);
if (unlikely(IS_ERR(out->async.s))) {
ddebug(1, "Failed to load cipher %s", alg_name);
return -EINVAL;
}
alg = crypto_ablkcipher_alg(out->async.s);
if (alg != NULL) {
/* Was correct key length supplied? */
if (alg->max_keysize > 0 &&
unlikely((keylen < alg->min_keysize) ||
(keylen > alg->max_keysize))) {
ddebug(1, "Wrong keylen '%zu' for algorithm '%s'. Use %u to %u.",
keylen, alg_name, alg->min_keysize, alg->max_keysize);
ret = -EINVAL;
goto error;
}
}
out->blocksize = crypto_ablkcipher_blocksize(out->async.s);
out->ivsize = crypto_ablkcipher_ivsize(out->async.s);
out->alignmask = crypto_ablkcipher_alignmask(out->async.s);
ret = crypto_ablkcipher_setkey(out->async.s, keyp, keylen);
} else {
out->async.as = crypto_alloc_aead(alg_name, 0, 0);
if (unlikely(IS_ERR(out->async.as))) {
ddebug(1, "Failed to load cipher %s", alg_name);
return -EINVAL;
}
out->blocksize = crypto_aead_blocksize(out->async.as);
out->ivsize = crypto_aead_ivsize(out->async.as);
out->alignmask = crypto_aead_alignmask(out->async.as);
ret = crypto_aead_setkey(out->async.as, keyp, keylen);
}
if (unlikely(ret)) {
ddebug(1, "Setting key failed for %s-%zu.", alg_name, keylen*8);
ret = -EINVAL;
goto error;
}
out->stream = stream;
out->aead = aead;
out->async.result = kzalloc(sizeof(*out->async.result), GFP_KERNEL);
if (unlikely(!out->async.result)) {
ret = -ENOMEM;
goto error;
}
init_completion(&out->async.result->completion);
if (aead == 0) {
out->async.request = ablkcipher_request_alloc(out->async.s, GFP_KERNEL);
if (unlikely(!out->async.request)) {
derr(1, "error allocating async crypto request");
ret = -ENOMEM;
goto error;
}
ablkcipher_request_set_callback(out->async.request,
CRYPTO_TFM_REQ_MAY_BACKLOG,
cryptodev_complete, out->async.result);
} else {
out->async.arequest = aead_request_alloc(out->async.as, GFP_KERNEL);
if (unlikely(!out->async.arequest)) {
derr(1, "error allocating async crypto request");
ret = -ENOMEM;
goto error;
}
aead_request_set_callback(out->async.arequest,
CRYPTO_TFM_REQ_MAY_BACKLOG,
cryptodev_complete, out->async.result);
}
out->init = 1;
return 0;
error:
if (aead == 0) {
if (out->async.request)
ablkcipher_request_free(out->async.request);
if (out->async.s)
crypto_free_ablkcipher(out->async.s);
} else {
if (out->async.arequest)
aead_request_free(out->async.arequest);
if (out->async.as)
crypto_free_aead(out->async.as);
}
kfree(out->async.result);
return ret;
}
/* Allocate out aead at the time of creation of new out SA.
pSA : pointer to out SA
ptr_aead : pointer to crypto_aead created corresponding to SA
*/
int32_t asf_alloc_aead_out(outSA_t *pSA, struct crypto_aead ** ptr_aead)
{
struct crypto_aead * aead = NULL;
struct crypto_authenc_key_param *param;
struct rtattr *rta;
char *key;
char *p;
char authenc_name[CRYPTO_MAX_ALG_NAME];
unsigned int keylen;
int err;
int aeadAlgo = 0;
int saltLen=0;
ASF_FP_LINUX_CRYPTO_FENTRY;
err = -EINVAL;
if(unlikely(!(pSA->SAParams.bEncrypt)))
goto error;
err = -ENAMETOOLONG;
//Check if AEAD algorithm
if(pSA->SAParams.ucCipherAlgo >= 14 && pSA->SAParams.ucCipherAlgo < 24)
{
aeadAlgo = 1;
if(unlikely(snprintf(authenc_name,CRYPTO_MAX_ALG_NAME,"%s",
get_enc_algo(pSA->SAParams.ucCipherAlgo)) >= CRYPTO_MAX_ALG_NAME))
goto error;
}
else
{
ASF_FP_LINUX_CRYPTO_DEBUG("test: asf_alloc_aead_out -Not AEAD ALOGO \
pSA->SAParams.ucCipherAlgo = %d: %d \n",
pSA->SAParams.ucCipherAlgo, __LINE__);
if (pSA->SAParams.bUseExtendedSequenceNumber)
{
if(unlikely(snprintf(authenc_name, CRYPTO_MAX_ALG_NAME,
"authencesn(%s,%s)",
pSA->SAParams.bAuth ? get_auth_algo(pSA->SAParams.ucAuthAlgo) :
"digest_null",
get_enc_algo(pSA->SAParams.ucCipherAlgo)) >= CRYPTO_MAX_ALG_NAME))
goto error;
}
else
{
if(unlikely (snprintf(authenc_name, CRYPTO_MAX_ALG_NAME,
"authenc(%s,%s)",
pSA->SAParams.bAuth ? get_auth_algo(pSA->SAParams.ucAuthAlgo) :
"digest_null",
get_enc_algo(pSA->SAParams.ucCipherAlgo)) >= CRYPTO_MAX_ALG_NAME) )
goto error;
}
}
ASF_FP_LINUX_CRYPTO_DEBUG("asf_alloc_aead_out authenc_name = %s: %d\n",
authenc_name, __LINE__);
aead = crypto_alloc_aead(authenc_name, 0, 0);
err = PTR_ERR(aead);
if(unlikely (IS_ERR(aead)))
goto error;
if(!aeadAlgo)
{
keylen = (pSA->SAParams.bAuth ? pSA->SAParams.AuthKeyLen : 0) +
pSA->SAParams.EncKeyLen + RTA_SPACE(sizeof(*param));
err = -ENOMEM;
key = kmalloc(keylen, GFP_KERNEL);
ASF_FP_LINUX_CRYPTO_DEBUG("asf_alloc_aead_out keylen = %d \
pSA->SAParams.EncKeyLen = %d pSA->SAParams.AuthKeyLen = %d \
: %d\n", keylen, pSA->SAParams.EncKeyLen,
pSA->SAParams.AuthKeyLen, __LINE__);
if(unlikely (!key))
goto error;
}