linux-kernel - Re: [PATCH v2 2/2] integrity: convert digsig to akcipher api

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Date:	Mon, 14 Dec 2015 06:59:02 -0800
From:	Tadeusz Struk <tadeusz.struk@...el.com>
To:	Mimi Zohar <zohar@...ux.vnet.ibm.com>, dhowells@...hat.com
Cc:	herbert@...dor.apana.org.au, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH v2 2/2] integrity: convert digsig to akcipher api

On 12/14/2015 05:24 AM, Mimi Zohar wrote:
> On Sat, 2015-12-12 at 18:26 -0800, Tadeusz Struk wrote:
>> Convert asymmetric_verify to akcipher api.
>>
>> Signed-off-by: Tadeusz Struk <tadeusz.struk@...el.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 4fec181..5629372 100644
>> --- a/security/integrity/digsig_asymmetric.c
>> +++ b/security/integrity/digsig_asymmetric.c
>> @@ -92,13 +92,9 @@ 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;
> 
> Thanks!  With this change, my system is now able to boot.
> 
Thanks Mimi.

David, do you have any comments to this patch set? If not could you ACK please.
Thanks,

-- 
TS
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