On Wed, Sep 11, 2019 at 09:41:10AM +0200, Pascal van Leeuwen wrote:
> Added support for the hmac(sm3) ahash authentication algorithm
>
> Signed-off-by: Pascal van Leeuwen <pvanleeuwen@xxxxxxxxxxxxxx>
Acked-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
Thanks!
Antoine
> ---
> drivers/crypto/inside-secure/safexcel.c | 1 +
> drivers/crypto/inside-secure/safexcel.h | 1 +
> drivers/crypto/inside-secure/safexcel_hash.c | 70 ++++++++++++++++++++++++++++
> 3 files changed, 72 insertions(+)
>
> diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
> index 826d1fb..7d907d5 100644
> --- a/drivers/crypto/inside-secure/safexcel.c
> +++ b/drivers/crypto/inside-secure/safexcel.c
> @@ -1177,6 +1177,7 @@ static int safexcel_request_ring_irq(void *pdev, int irqid,
> &safexcel_alg_chachapoly,
> &safexcel_alg_chachapoly_esp,
> &safexcel_alg_sm3,
> + &safexcel_alg_hmac_sm3,
> };
>
> static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv)
> diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
> index fc2aba2..7ee09fe 100644
> --- a/drivers/crypto/inside-secure/safexcel.h
> +++ b/drivers/crypto/inside-secure/safexcel.h
> @@ -871,5 +871,6 @@ int safexcel_hmac_setkey(const char *alg, const u8 *key, unsigned int keylen,
> extern struct safexcel_alg_template safexcel_alg_chachapoly;
> extern struct safexcel_alg_template safexcel_alg_chachapoly_esp;
> extern struct safexcel_alg_template safexcel_alg_sm3;
> +extern struct safexcel_alg_template safexcel_alg_hmac_sm3;
>
> #endif
> diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
> index a4107bb..fdf4bcc 100644
> --- a/drivers/crypto/inside-secure/safexcel_hash.c
> +++ b/drivers/crypto/inside-secure/safexcel_hash.c
> @@ -2280,3 +2280,73 @@ struct safexcel_alg_template safexcel_alg_sm3 = {
> },
> },
> };
> +
> +static int safexcel_hmac_sm3_setkey(struct crypto_ahash *tfm, const u8 *key,
> + unsigned int keylen)
> +{
> + return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-sm3",
> + SM3_DIGEST_SIZE);
> +}
> +
> +static int safexcel_hmac_sm3_init(struct ahash_request *areq)
> +{
> + struct safexcel_ahash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(areq));
> + struct safexcel_ahash_req *req = ahash_request_ctx(areq);
> +
> + memset(req, 0, sizeof(*req));
> +
> + /* Start from ipad precompute */
> + memcpy(req->state, ctx->ipad, SM3_DIGEST_SIZE);
> + /* Already processed the key^ipad part now! */
> + req->len = SM3_BLOCK_SIZE;
> + req->processed = SM3_BLOCK_SIZE;
> +
> + ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SM3;
> + req->digest = CONTEXT_CONTROL_DIGEST_PRECOMPUTED;
> + req->state_sz = SM3_DIGEST_SIZE;
> + req->block_sz = SM3_BLOCK_SIZE;
> + req->hmac = true;
> +
> + return 0;
> +}
> +
> +static int safexcel_hmac_sm3_digest(struct ahash_request *areq)
> +{
> + int ret = safexcel_hmac_sm3_init(areq);
> +
> + if (ret)
> + return ret;
> +
> + return safexcel_ahash_finup(areq);
> +}
> +
> +struct safexcel_alg_template safexcel_alg_hmac_sm3 = {
> + .type = SAFEXCEL_ALG_TYPE_AHASH,
> + .algo_mask = SAFEXCEL_ALG_SM3,
> + .alg.ahash = {
> + .init = safexcel_hmac_sm3_init,
> + .update = safexcel_ahash_update,
> + .final = safexcel_ahash_final,
> + .finup = safexcel_ahash_finup,
> + .digest = safexcel_hmac_sm3_digest,
> + .setkey = safexcel_hmac_sm3_setkey,
> + .export = safexcel_ahash_export,
> + .import = safexcel_ahash_import,
> + .halg = {
> + .digestsize = SM3_DIGEST_SIZE,
> + .statesize = sizeof(struct safexcel_ahash_export_state),
> + .base = {
> + .cra_name = "hmac(sm3)",
> + .cra_driver_name = "safexcel-hmac-sm3",
> + .cra_priority = SAFEXCEL_CRA_PRIORITY,
> + .cra_flags = CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SM3_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct safexcel_ahash_ctx),
> + .cra_init = safexcel_ahash_cra_init,
> + .cra_exit = safexcel_ahash_cra_exit,
> + .cra_module = THIS_MODULE,
> + },
> + },
> + },
> +};
> --
> 1.8.3.1
>
--
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
