linux-ext4 - Re: [PATCH] crypto: allow to assign gfp_t for __crypto_alloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150519065929.GA28610@gondor.apana.org.au>
Date:	Tue, 19 May 2015 14:59:29 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	davem@...emloft.net, linux-crypto@...r.kernel.org,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net, ecryptfs@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] crypto: allow to assign gfp_t for __crypto_alloc_tfm

On Mon, May 18, 2015 at 11:58:12PM -0700, Jaegeuk Kim wrote:
>
> > So where does the key get generated? The crypto tfm should be
> > allocated when you generate the key.
> 
> In fs/ext4/crypto.c,
> 
>  - writepage
>    - ext4_encrypt
>      - ext4_get_crypto_ctx
>        - crypto_alloc_ablkcipher
>      - ext4_page_crypto
>        - crypto_ablkcipher_setkey
>        - ablkcipher_request_alloc(GFP_NOFS)
>        - ablkcipher_request_set_crypt(PAGE_CACHE_SIZE)
>        - crypto_ablkcipher_encrypt
> 
>  - end_io
>    - crypto_free_tfm

No that's where you set the key, not where you generate the key.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html