ACK: [SRU][Xenial][PATCH 1/1] integrity: convert digsig to akcipher api

[Stefan Bader]

On 07.12.2017 19:37, Joseph Salisbury wrote:
> From: Tadeusz Struk <tadeusz.struk at intel.com>
> 
> BugLink: http://bugs.launchpad.net/bugs/1735977
> 
> Convert asymmetric_verify to akcipher api.
> 
> Signed-off-by: Tadeusz Struk <tadeusz.struk at intel.com>
> Acked-by: Herbert Xu <herbert at gondor.apana.org.au>
> Signed-off-by: David Howells <dhowells at redhat.com>
> (cherry picked from commit eb5798f2e28f3b43091cecc71c84c3f6fb35c7de)
> Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>
Acked-by: Stefan Bader <stefan.bader at canonical.com>

> ---
>  security/integrity/Kconfig             |  1 +
>  security/integrity/digsig_asymmetric.c | 10 +++-------
>  2 files changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig
> index 73c457b..f0b2463 100644
> --- a/security/integrity/Kconfig
> +++ b/security/integrity/Kconfig
> @@ -36,6 +36,7 @@ config INTEGRITY_ASYMMETRIC_KEYS
>          select ASYMMETRIC_KEY_TYPE
>          select ASYMMETRIC_PUBLIC_KEY_SUBTYPE
>          select PUBLIC_KEY_ALGO_RSA
> +        select CRYPTO_RSA
>          select X509_CERTIFICATE_PARSER
>  	help
>  	  This option enables digital signature verification using
> diff --git a/security/integrity/digsig_asymmetric.c b/security/integrity/digsig_asymmetric.c
> index 5ade2a7..2fa3bc6 100644
> --- a/security/integrity/digsig_asymmetric.c
> +++ b/security/integrity/digsig_asymmetric.c
> @@ -106,13 +106,9 @@ int asymmetric_verify(struct key *keyring, const char *sig,
>  	pks.pkey_hash_algo = hdr->hash_algo;
>  	pks.digest = (u8 *)data;
>  	pks.digest_size = datalen;
> -	pks.nr_mpi = 1;
> -	pks.rsa.s = mpi_read_raw_data(hdr->sig, siglen);
> -
> -	if (pks.rsa.s)
> -		ret = verify_signature(key, &pks);
> -
> -	mpi_free(pks.rsa.s);
> +	pks.s = hdr->sig;
> +	pks.s_size = siglen;
> +	ret = verify_signature(key, &pks);
>  	key_put(key);
>  	pr_debug("%s() = %d\n", __func__, ret);
>  	return ret;
> 


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