From: Stephan Mueller Date: Sun, 17 Aug 2014 15:37:34 +0000 (+0200) Subject: crypto: drbg - replace int2byte with cpu_to_be X-Git-Tag: fixes-for-v3.18-merge-window~17^2~30 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72f3e00dd67ec449199a8844bc012a4fa1e0340a;p=pandora-kernel.git crypto: drbg - replace int2byte with cpu_to_be The DRBG requires the conversion of an integer into a string representation of that integer. The previous implementation converted the given integer byte-wise. However, the kernel offers the cpu_to_be function which already re-arranges the memory representation of an integer such that it applies when interpreting the same memory as character string. The change therefore uses an integer-cast / union of the target character array together with the cpu_to_be function to convert an integer into its string representation. Tests show that the Hash and CTR DRBG implementations (the HMAC DRBG does not require such conversion) is about 10% faster (or requires less computing power, respectively). Signed-off-by: Stephan Mueller Signed-off-by: Herbert Xu --- Reading git-diff-tree failed