crypto: drbg - use single block cipher API

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The CTR DRBG only encrypts one single block at a time. Thus, use the
single block crypto API to avoid additional overhead from the block
chaining modes.

With the patch, the speed of the DRBG increases between 30% and 40%.

The DRBG still passes the CTR DRBG CAVS test.

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

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Stephan Mueller 2015-03-01 20:39:17 +01:00 • committed by Herbert Xu

parent e8e5995372

commit 04bcbfcf7e

1 changed files with 16 additions and 23 deletions

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crypto/drbg.c

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