linux-kernel - Use cryptd(%s) as cryptd-ed algorithm name instead of %s

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-next>] [day] [month] [year] [list]

Message-Id: <1231915448.5937.145.camel@yhuang-dev.sh.intel.com>
Date:	Wed, 14 Jan 2009 14:44:08 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>
Subject: Use cryptd(%s) as cryptd-ed algorithm name instead of %s

Because:

1. if use %s, you can only request cryptd(<driver name>), not
   cryptd(<alg name>), because generated new algorithm instance has
   algorithm name: <alg name> and driver name cryptd(<driver name>).

2. Generated cryptd-ed algorithm will have the same algorithm name and
   higher priority, but some user may not want to use cryptd-ed
   version.

Signed-off-by: Huang Ying <ying.huang@...el.com>

---
 crypto/cryptd.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -215,7 +215,9 @@ static struct crypto_instance *cryptd_al
 
 	ctx->state = state;
 
-	memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME);
+	if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME,
+		     "cryptd(%s)", alg->cra_name) >= CRYPTO_MAX_ALG_NAME)
+		goto out_free_inst;
 
 	inst->alg.cra_priority = alg->cra_priority + 50;
 	inst->alg.cra_blocksize = alg->cra_blocksize;


Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)