From: Stephan Mueller <smueller@chronox.de>
Date: Fri, 17 Apr 2015 12:54:08 +0000 (+0200)
Subject: cryoto: drbg - clear all temporary memory
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~193^2~291
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e0498d99f182dd06c012dfc62768e8ca0450adf;p=pandora-kernel.git

cryoto: drbg - clear all temporary memory

The buffer uses for temporary data must be cleared entirely. In AES192
the used buffer is drbg_statelen(drbg) + drbg_blocklen(drbg) as
documented in the comment above drbg_ctr_df.

This patch ensures that the temp buffer is completely wiped.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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