Re: [PATCH] crypto: inside-secure: Remove redundant DES ECB & CBC keysize check

[Antoine Tenart <antoine.tenart@bootlin.com>]

Hi Pascal,

On Wed, Jul 31, 2019 at 08:10:54AM +0200, Pascal van Leeuwen wrote:
> This patch removes a DES key size check that is redundant as it is already
> performed by the crypto API itself due to min_keysize = max_keysize.
> 
> Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>

Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>

Thanks!
Antoine

> ---
>  drivers/crypto/inside-secure/safexcel_cipher.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
> index 56dc8f9..d52b8ff 100644
> --- a/drivers/crypto/inside-secure/safexcel_cipher.c
> +++ b/drivers/crypto/inside-secure/safexcel_cipher.c
> @@ -1188,11 +1188,6 @@ static int safexcel_des_setkey(struct crypto_skcipher *ctfm, const u8 *key,
>  	u32 tmp[DES_EXPKEY_WORDS];
>  	int ret;
>  
> -	if (len != DES_KEY_SIZE) {
> -		crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
> -		return -EINVAL;
> -	}
> -
>  	ret = des_ekey(tmp, key);
>  	if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
>  		tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
> -- 
> 1.8.3.1
> 

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com