static int seqiv_aead_init(struct crypto_tfm *tfm)
{
struct crypto_aead *geniv = __crypto_aead_cast(tfm);
struct seqiv_ctx *ctx = crypto_aead_ctx(geniv);
spin_lock_init(&ctx->lock);
tfm->crt_aead.reqsize = sizeof(struct aead_request);
return aead_geniv_init(tfm);
}
static int seqiv_aead_init(struct crypto_tfm *tfm)
{
struct crypto_aead *geniv = __crypto_aead_cast(tfm);
struct seqiv_ctx *ctx = crypto_aead_ctx(geniv);
spin_lock_init(&ctx->lock);
tfm->crt_aead.reqsize = sizeof(struct aead_request);
return crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
crypto_aead_ivsize(geniv)) ?:
aead_geniv_init(tfm);
}
static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
{
struct aead_alg *alg = &tfm->__crt_alg->cra_aead;
struct aead_tfm *crt = &tfm->crt_aead;
if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
return -EINVAL;
crt->setkey = tfm->__crt_alg->cra_flags & CRYPTO_ALG_GENIV ?
alg->setkey : setkey;
crt->encrypt = alg->encrypt;
crt->decrypt = alg->decrypt;
crt->givencrypt = alg->givencrypt ?: no_givcrypt;
crt->givdecrypt = alg->givdecrypt ?: no_givcrypt;
crt->base = __crypto_aead_cast(tfm);
crt->ivsize = alg->ivsize;
crt->authsize = alg->maxauthsize;
return 0;
}
static int crypto_init_nivaead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
{
struct aead_alg *alg = &tfm->__crt_alg->cra_aead;
struct aead_tfm *crt = &tfm->crt_aead;
if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
return -EINVAL;
crt->setkey = setkey;
crt->encrypt = alg->encrypt;
crt->decrypt = alg->decrypt;
if (!alg->ivsize) {
crt->givencrypt = aead_null_givencrypt;
crt->givdecrypt = aead_null_givdecrypt;
}
crt->base = __crypto_aead_cast(tfm);
crt->ivsize = alg->ivsize;
crt->authsize = alg->maxauthsize;
return 0;
}
struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask)
{
struct crypto_tfm *tfm;
int err;
type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
type |= CRYPTO_ALG_TYPE_AEAD;
mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
mask |= CRYPTO_ALG_TYPE_MASK;
for (;;) {
struct crypto_alg *alg;
alg = crypto_lookup_aead(alg_name, type, mask);
if (IS_ERR(alg)) {
err = PTR_ERR(alg);
goto err;
}
tfm = __crypto_alloc_tfm(alg, type, mask);
if (!IS_ERR(tfm))
return __crypto_aead_cast(tfm);
crypto_mod_put(alg);
err = PTR_ERR(tfm);
err:
if (err != -EAGAIN)
break;
if (signal_pending(current)) {
err = -EINTR;
break;
}
}
return ERR_PTR(err);
}
static int echainiv_encrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
struct echainiv_ctx *ctx = crypto_aead_ctx(geniv);
struct aead_request *subreq = aead_request_ctx(req);
crypto_completion_t compl;
void *data;
u8 *info;
unsigned int ivsize = crypto_aead_ivsize(geniv);
int err;
if (req->cryptlen < ivsize)
return -EINVAL;
aead_request_set_tfm(subreq, ctx->geniv.child);
compl = echainiv_encrypt_complete;
data = req;
info = req->iv;
if (req->src != req->dst) {
struct blkcipher_desc desc = {
.tfm = ctx->null,
};
err = crypto_blkcipher_encrypt(
&desc, req->dst, req->src,
req->assoclen + req->cryptlen);
if (err)
return err;
}
if (unlikely(!IS_ALIGNED((unsigned long)info,
crypto_aead_alignmask(geniv) + 1))) {
info = kmalloc(ivsize, req->base.flags &
CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL:
GFP_ATOMIC);
if (!info)
return -ENOMEM;
memcpy(info, req->iv, ivsize);
}
aead_request_set_callback(subreq, req->base.flags, compl, data);
aead_request_set_crypt(subreq, req->dst, req->dst,
req->cryptlen - ivsize, info);
aead_request_set_ad(subreq, req->assoclen + ivsize);
crypto_xor(info, ctx->salt, ivsize);
scatterwalk_map_and_copy(info, req->dst, req->assoclen, ivsize, 1);
echainiv_read_iv(info, ivsize);
err = crypto_aead_encrypt(subreq);
echainiv_encrypt_complete2(req, err);
return err;
}
static int echainiv_decrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
struct echainiv_ctx *ctx = crypto_aead_ctx(geniv);
struct aead_request *subreq = aead_request_ctx(req);
crypto_completion_t compl;
void *data;
unsigned int ivsize = crypto_aead_ivsize(geniv);
if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
return -EINVAL;
aead_request_set_tfm(subreq, ctx->geniv.child);
compl = req->base.complete;
data = req->base.data;
aead_request_set_callback(subreq, req->base.flags, compl, data);
aead_request_set_crypt(subreq, req->src, req->dst,
req->cryptlen - ivsize, req->iv);
aead_request_set_ad(subreq, req->assoclen + ivsize);
scatterwalk_map_and_copy(req->iv, req->src, req->assoclen, ivsize, 0);
if (req->src != req->dst)
scatterwalk_map_and_copy(req->iv, req->dst,
req->assoclen, ivsize, 1);
return crypto_aead_decrypt(subreq);
}
static int echainiv_init(struct crypto_tfm *tfm)
{
struct crypto_aead *geniv = __crypto_aead_cast(tfm);
struct echainiv_ctx *ctx = crypto_aead_ctx(geniv);
int err;
spin_lock_init(&ctx->geniv.lock);
crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));
err = crypto_get_default_rng();
if (err)
goto out;
err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
crypto_aead_ivsize(geniv));
crypto_put_default_rng();
if (err)
goto out;
ctx->null = crypto_get_default_null_skcipher();
err = PTR_ERR(ctx->null);
if (IS_ERR(ctx->null))
goto out;
err = aead_geniv_init(tfm);
if (err)
goto drop_null;
ctx->geniv.child = geniv->child;
geniv->child = geniv;
out:
return err;
drop_null:
crypto_put_default_null_skcipher();
goto out;
}
static void echainiv_exit(struct crypto_tfm *tfm)
{
struct echainiv_ctx *ctx = crypto_tfm_ctx(tfm);
crypto_free_aead(ctx->geniv.child);
crypto_put_default_null_skcipher();
}
static int echainiv_aead_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
struct aead_instance *inst;
struct crypto_aead_spawn *spawn;
struct aead_alg *alg;
int err;
inst = aead_geniv_alloc(tmpl, tb, 0, 0);
if (IS_ERR(inst))
return PTR_ERR(inst);
spawn = aead_instance_ctx(inst);
alg = crypto_spawn_aead_alg(spawn);
if (alg->base.cra_aead.encrypt)
goto done;
err = -EINVAL;
if (inst->alg.ivsize & (sizeof(u32) - 1) ||
inst->alg.ivsize > MAX_IV_SIZE)
goto free_inst;
inst->alg.encrypt = echainiv_encrypt;
inst->alg.decrypt = echainiv_decrypt;
inst->alg.base.cra_init = echainiv_init;
inst->alg.base.cra_exit = echainiv_exit;
inst->alg.base.cra_alignmask |= __alignof__(u32) - 1;
inst->alg.base.cra_ctxsize = sizeof(struct echainiv_ctx);
inst->alg.base.cra_ctxsize += inst->alg.ivsize;
done:
err = aead_register_instance(tmpl, inst);
if (err)
goto free_inst;
out:
return err;
free_inst:
aead_geniv_free(inst);
goto out;
}
static void echainiv_free(struct crypto_instance *inst)
{
aead_geniv_free(aead_instance(inst));
}
static int qat_alg_aead_init_dec_session(struct qat_alg_aead_ctx *ctx,
int alg,
struct crypto_authenc_keys *keys)
{
struct crypto_aead *aead_tfm = __crypto_aead_cast(ctx->tfm);
unsigned int digestsize = crypto_aead_crt(aead_tfm)->authsize;
struct qat_dec *dec_ctx = &ctx->dec_cd->qat_dec_cd;
struct icp_qat_hw_auth_algo_blk *hash = &dec_ctx->hash;
struct icp_qat_hw_cipher_algo_blk *cipher =
(struct icp_qat_hw_cipher_algo_blk *)((char *)dec_ctx +
sizeof(struct icp_qat_hw_auth_setup) +
roundup(crypto_shash_digestsize(ctx->hash_tfm), 8) * 2);
struct icp_qat_fw_la_bulk_req *req_tmpl = &ctx->dec_fw_req;
struct icp_qat_fw_comn_req_hdr_cd_pars *cd_pars = &req_tmpl->cd_pars;
struct icp_qat_fw_comn_req_hdr *header = &req_tmpl->comn_hdr;
void *ptr = &req_tmpl->cd_ctrl;
struct icp_qat_fw_cipher_cd_ctrl_hdr *cipher_cd_ctrl = ptr;
struct icp_qat_fw_auth_cd_ctrl_hdr *hash_cd_ctrl = ptr;
struct icp_qat_fw_la_auth_req_params *auth_param =
(struct icp_qat_fw_la_auth_req_params *)
((char *)&req_tmpl->serv_specif_rqpars +
sizeof(struct icp_qat_fw_la_cipher_req_params));
/* CD setup */
cipher->aes.cipher_config.val = QAT_AES_HW_CONFIG_CBC_DEC(alg);
memcpy(cipher->aes.key, keys->enckey, keys->enckeylen);
hash->sha.inner_setup.auth_config.config =
ICP_QAT_HW_AUTH_CONFIG_BUILD(ICP_QAT_HW_AUTH_MODE1,
ctx->qat_hash_alg,
digestsize);
hash->sha.inner_setup.auth_counter.counter =
cpu_to_be32(crypto_shash_blocksize(ctx->hash_tfm));
if (qat_alg_do_precomputes(hash, ctx, keys->authkey, keys->authkeylen))
return -EFAULT;
/* Request setup */
qat_alg_init_common_hdr(header);
header->service_cmd_id = ICP_QAT_FW_LA_CMD_HASH_CIPHER;
ICP_QAT_FW_LA_DIGEST_IN_BUFFER_SET(header->serv_specif_flags,
ICP_QAT_FW_LA_DIGEST_IN_BUFFER);
ICP_QAT_FW_LA_RET_AUTH_SET(header->serv_specif_flags,
ICP_QAT_FW_LA_NO_RET_AUTH_RES);
ICP_QAT_FW_LA_CMP_AUTH_SET(header->serv_specif_flags,
ICP_QAT_FW_LA_CMP_AUTH_RES);
cd_pars->u.s.content_desc_addr = ctx->dec_cd_paddr;
cd_pars->u.s.content_desc_params_sz = sizeof(struct qat_alg_cd) >> 3;
/* Cipher CD config setup */
cipher_cd_ctrl->cipher_key_sz = keys->enckeylen >> 3;
cipher_cd_ctrl->cipher_state_sz = AES_BLOCK_SIZE >> 3;
cipher_cd_ctrl->cipher_cfg_offset =
(sizeof(struct icp_qat_hw_auth_setup) +
roundup(crypto_shash_digestsize(ctx->hash_tfm), 8) * 2) >> 3;
ICP_QAT_FW_COMN_CURR_ID_SET(cipher_cd_ctrl, ICP_QAT_FW_SLICE_CIPHER);
ICP_QAT_FW_COMN_NEXT_ID_SET(cipher_cd_ctrl, ICP_QAT_FW_SLICE_DRAM_WR);
/* Auth CD config setup */
hash_cd_ctrl->hash_cfg_offset = 0;
hash_cd_ctrl->hash_flags = ICP_QAT_FW_AUTH_HDR_FLAG_NO_NESTED;
hash_cd_ctrl->inner_res_sz = digestsize;
hash_cd_ctrl->final_sz = digestsize;
switch (ctx->qat_hash_alg) {
case ICP_QAT_HW_AUTH_ALGO_SHA1:
hash_cd_ctrl->inner_state1_sz =
round_up(ICP_QAT_HW_SHA1_STATE1_SZ, 8);
hash_cd_ctrl->inner_state2_sz =
round_up(ICP_QAT_HW_SHA1_STATE2_SZ, 8);
break;
case ICP_QAT_HW_AUTH_ALGO_SHA256:
hash_cd_ctrl->inner_state1_sz = ICP_QAT_HW_SHA256_STATE1_SZ;
hash_cd_ctrl->inner_state2_sz = ICP_QAT_HW_SHA256_STATE2_SZ;
break;
case ICP_QAT_HW_AUTH_ALGO_SHA512:
hash_cd_ctrl->inner_state1_sz = ICP_QAT_HW_SHA512_STATE1_SZ;
hash_cd_ctrl->inner_state2_sz = ICP_QAT_HW_SHA512_STATE2_SZ;
break;
default:
break;
}
hash_cd_ctrl->inner_state2_offset = hash_cd_ctrl->hash_cfg_offset +
((sizeof(struct icp_qat_hw_auth_setup) +
round_up(hash_cd_ctrl->inner_state1_sz, 8)) >> 3);
auth_param->auth_res_sz = digestsize;
ICP_QAT_FW_COMN_CURR_ID_SET(hash_cd_ctrl, ICP_QAT_FW_SLICE_AUTH);
ICP_QAT_FW_COMN_NEXT_ID_SET(hash_cd_ctrl, ICP_QAT_FW_SLICE_CIPHER);
return 0;
}
