static int qce_import_common(struct ahash_request *req, u64 in_count,
const u32 *state, const u8 *buffer, bool hmac)
{
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
struct qce_sha_reqctx *rctx = ahash_request_ctx(req);
unsigned int digestsize = crypto_ahash_digestsize(ahash);
unsigned int blocksize;
u64 count = in_count;
blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
rctx->count = in_count;
memcpy(rctx->buf, buffer, blocksize);
if (in_count <= blocksize) {
rctx->first_blk = 1;
} else {
rctx->first_blk = 0;
/*
* For HMAC, there is a hardware padding done when first block
* is set. Therefore the byte_count must be incremened by 64
* after the first block operation.
*/
if (hmac)
count += SHA_PADDING;
}
rctx->byte_count[0] = (__force __be32)(count & ~SHA_PADDING_MASK);
rctx->byte_count[1] = (__force __be32)(count >> 32);
qce_cpu_to_be32p_array((__be32 *)rctx->digest, (const u8 *)state,
digestsize);
rctx->buflen = (unsigned int)(in_count & (blocksize - 1));
return 0;
}
static int qce_ahash_export(struct ahash_request *req, void *out)
{
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
struct qce_sha_reqctx *rctx = ahash_request_ctx(req);
unsigned long flags = rctx->flags;
unsigned int digestsize = crypto_ahash_digestsize(ahash);
unsigned int blocksize =
crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
if (IS_SHA1(flags) || IS_SHA1_HMAC(flags)) {
struct sha1_state *out_state = out;
out_state->count = rctx->count;
qce_cpu_to_be32p_array((__be32 *)out_state->state,
rctx->digest, digestsize);
memcpy(out_state->buffer, rctx->buf, blocksize);
} else if (IS_SHA256(flags) || IS_SHA256_HMAC(flags)) {
struct sha256_state *out_state = out;
out_state->count = rctx->count;
qce_cpu_to_be32p_array((__be32 *)out_state->state,
rctx->digest, digestsize);
memcpy(out_state->buf, rctx->buf, blocksize);
} else {
return -EINVAL;
}
return 0;
}
static int mv_cesa_ahmac_setkey(const char *hash_alg_name,
const u8 *key, unsigned int keylen,
void *istate, void *ostate)
{
struct ahash_request *req;
struct crypto_ahash *tfm;
unsigned int blocksize;
u8 *ipad = NULL;
u8 *opad;
int ret;
tfm = crypto_alloc_ahash(hash_alg_name, CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
if (IS_ERR(tfm))
return PTR_ERR(tfm);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
ret = -ENOMEM;
goto free_ahash;
}
crypto_ahash_clear_flags(tfm, ~0);
blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
ipad = kzalloc(2 * blocksize, GFP_KERNEL);
if (!ipad) {
ret = -ENOMEM;
goto free_req;
}
opad = ipad + blocksize;
ret = mv_cesa_ahmac_pad_init(req, key, keylen, ipad, opad, blocksize);
if (ret)
goto free_ipad;
ret = mv_cesa_ahmac_iv_state_init(req, ipad, istate, blocksize);
if (ret)
goto free_ipad;
ret = mv_cesa_ahmac_iv_state_init(req, opad, ostate, blocksize);
free_ipad:
kfree(ipad);
free_req:
ahash_request_free(req);
free_ahash:
crypto_free_ahash(tfm);
return ret;
}
static int mv_cesa_ahmac_sha256_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
struct sha256_state istate, ostate;
int ret, i;
ret = mv_cesa_ahmac_setkey("mv-sha256", key, keylen, &istate, &ostate);
if (ret)
return ret;
for (i = 0; i < ARRAY_SIZE(istate.state); i++)
ctx->iv[i] = be32_to_cpu(istate.state[i]);
for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
return 0;
}
static void tcrypt_complete(struct crypto_async_request *req, int err)
{
struct tcrypt_result *res = req->data;
if (err == -EINPROGRESS)
return;
res->err = err;
complete(&res->completion);
}
static int test_hash(struct crypto_ahash *tfm, struct hash_testvec *template,
unsigned int tcount)
{
const char *algo = crypto_tfm_alg_driver_name(crypto_ahash_tfm(tfm));
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char result[64];
struct ahash_request *req;
struct tcrypt_result tresult;
int ret;
void *hash_buff;
init_completion(&tresult.completion);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
printk(KERN_ERR "alg: hash: Failed to allocate request for "
"%s\n", algo);
ret = -ENOMEM;
e_free:
sg_free_table(&rctx->data_sg);
return ret;
}
static int ccp_do_cmac_update(struct ahash_request *req, unsigned int nbytes,
unsigned int final)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct ccp_ctx *ctx = crypto_ahash_ctx(tfm);
struct ccp_aes_cmac_req_ctx *rctx = ahash_request_ctx(req);
struct scatterlist *sg, *cmac_key_sg = NULL;
unsigned int block_size =
crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
unsigned int need_pad, sg_count;
gfp_t gfp;
u64 len;
int ret;
if (!ctx->u.aes.key_len)
return -EINVAL;
if (nbytes)
rctx->null_msg = 0;
len = (u64)rctx->buf_count + (u64)nbytes;
if (!final && (len <= block_size)) {
scatterwalk_map_and_copy(rctx->buf + rctx->buf_count, req->src,
static inline const char *crypto_ahash_driver_name(struct crypto_ahash *tfm)
{
return crypto_tfm_alg_driver_name(crypto_ahash_tfm(tfm));
}
static int qce_ahash_hmac_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
unsigned int digestsize = crypto_ahash_digestsize(tfm);
struct qce_sha_ctx *ctx = crypto_tfm_ctx(&tfm->base);
struct qce_ahash_result result;
struct ahash_request *req;
struct scatterlist sg;
unsigned int blocksize;
struct crypto_ahash *ahash_tfm;
u8 *buf;
int ret;
const char *alg_name;
blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
memset(ctx->authkey, 0, sizeof(ctx->authkey));
if (keylen <= blocksize) {
memcpy(ctx->authkey, key, keylen);
return 0;
}
if (digestsize == SHA1_DIGEST_SIZE)
alg_name = "sha1-qce";
else if (digestsize == SHA256_DIGEST_SIZE)
alg_name = "sha256-qce";
else
return -EINVAL;
ahash_tfm = crypto_alloc_ahash(alg_name, CRYPTO_ALG_TYPE_AHASH,
CRYPTO_ALG_TYPE_AHASH_MASK);
if (IS_ERR(ahash_tfm))
return PTR_ERR(ahash_tfm);
req = ahash_request_alloc(ahash_tfm, GFP_KERNEL);
if (!req) {
ret = -ENOMEM;
goto err_free_ahash;
}
init_completion(&result.completion);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
qce_digest_complete, &result);
crypto_ahash_clear_flags(ahash_tfm, ~0);
buf = kzalloc(keylen + QCE_MAX_ALIGN_SIZE, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto err_free_req;
}
memcpy(buf, key, keylen);
sg_init_one(&sg, buf, keylen);
ahash_request_set_crypt(req, &sg, ctx->authkey, keylen);
ret = crypto_ahash_digest(req);
if (ret == -EINPROGRESS || ret == -EBUSY) {
ret = wait_for_completion_interruptible(&result.completion);
if (!ret)
ret = result.error;
}
if (ret)
crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
kfree(buf);
err_free_req:
ahash_request_free(req);
err_free_ahash:
crypto_free_ahash(ahash_tfm);
return ret;
}
static int qce_ahash_update(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct qce_sha_reqctx *rctx = ahash_request_ctx(req);
struct qce_alg_template *tmpl = to_ahash_tmpl(req->base.tfm);
struct qce_device *qce = tmpl->qce;
struct scatterlist *sg_last, *sg;
unsigned int total, len;
unsigned int hash_later;
unsigned int nbytes;
unsigned int blocksize;
blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
rctx->count += req->nbytes;
/* check for buffer from previous updates and append it */
total = req->nbytes + rctx->buflen;
if (total <= blocksize) {
scatterwalk_map_and_copy(rctx->buf + rctx->buflen, req->src,
0, req->nbytes, 0);
rctx->buflen += req->nbytes;
return 0;
}
/* save the original req structure fields */
rctx->src_orig = req->src;
rctx->nbytes_orig = req->nbytes;
/*
* if we have data from previous update copy them on buffer. The old
* data will be combined with current request bytes.
*/
if (rctx->buflen)
memcpy(rctx->tmpbuf, rctx->buf, rctx->buflen);
/* calculate how many bytes will be hashed later */
hash_later = total % blocksize;
if (hash_later) {
unsigned int src_offset = req->nbytes - hash_later;
scatterwalk_map_and_copy(rctx->buf, req->src, src_offset,
hash_later, 0);
}
/* here nbytes is multiple of blocksize */
nbytes = total - hash_later;
len = rctx->buflen;
sg = sg_last = req->src;
while (len < nbytes && sg) {
if (len + sg_dma_len(sg) > nbytes)
break;
len += sg_dma_len(sg);
sg_last = sg;
sg = sg_next(sg);
}
if (!sg_last)
return -EINVAL;
sg_mark_end(sg_last);
if (rctx->buflen) {
sg_init_table(rctx->sg, 2);
sg_set_buf(rctx->sg, rctx->tmpbuf, rctx->buflen);
sg_chain(rctx->sg, 2, req->src);
req->src = rctx->sg;
}
req->nbytes = nbytes;
rctx->buflen = hash_later;
return qce->async_req_enqueue(tmpl->qce, &req->base);
}
static int sahara_sha_prepare_request(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct sahara_sha_reqctx *rctx = ahash_request_ctx(req);
unsigned int hash_later;
unsigned int block_size;
unsigned int len;
block_size = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
/* append bytes from previous operation */
len = rctx->buf_cnt + req->nbytes;
/* only the last transfer can be padded in hardware */
if (!rctx->last && (len < block_size)) {
/* to few data, save for next operation */
scatterwalk_map_and_copy(rctx->buf + rctx->buf_cnt, req->src,
0, req->nbytes, 0);
rctx->buf_cnt += req->nbytes;
return 0;
}
/* add data from previous operation first */
if (rctx->buf_cnt)
memcpy(rctx->rembuf, rctx->buf, rctx->buf_cnt);
/* data must always be a multiple of block_size */
hash_later = rctx->last ? 0 : len & (block_size - 1);
if (hash_later) {
unsigned int offset = req->nbytes - hash_later;
/* Save remaining bytes for later use */
scatterwalk_map_and_copy(rctx->buf, req->src, offset,
hash_later, 0);
}
/* nbytes should now be multiple of blocksize */
req->nbytes = req->nbytes - hash_later;
sahara_walk_and_recalc(req->src, req->nbytes);
/* have data from previous operation and current */
if (rctx->buf_cnt && req->nbytes) {
sg_init_table(rctx->in_sg_chain, 2);
sg_set_buf(rctx->in_sg_chain, rctx->rembuf, rctx->buf_cnt);
scatterwalk_sg_chain(rctx->in_sg_chain, 2, req->src);
rctx->total = req->nbytes + rctx->buf_cnt;
rctx->in_sg = rctx->in_sg_chain;
rctx->in_sg_chained = true;
req->src = rctx->in_sg_chain;
/* only data from previous operation */
} else if (rctx->buf_cnt) {
if (req->src)
rctx->in_sg = req->src;
else
rctx->in_sg = rctx->in_sg_chain;
/* buf was copied into rembuf above */
sg_init_one(rctx->in_sg, rctx->rembuf, rctx->buf_cnt);
rctx->total = rctx->buf_cnt;
rctx->in_sg_chained = false;
/* no data from previous operation */
} else {
rctx->in_sg = req->src;
rctx->total = req->nbytes;
req->src = rctx->in_sg;
rctx->in_sg_chained = false;
}
/* on next call, we only have the remaining data in the buffer */
rctx->buf_cnt = hash_later;
return -EINPROGRESS;
}
