From mboxrd@z Thu Jan 1 00:00:00 1970 From: Herbert Xu Subject: [PATCH 8/15] crypto: rng - Add crypto_rng_set_entropy Date: Mon, 20 Apr 2015 13:39:08 +0800 Message-ID: References: <20150420053515.GA18444@gondor.apana.org.au> To: Linux Crypto Mailing List Return-path: Received: from helcar.hengli.com.au ([209.40.204.226]:39088 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751521AbbDTFjM (ORCPT ); Mon, 20 Apr 2015 01:39:12 -0400 Received: from gondolin.me.apana.org.au ([192.168.0.6]) by norbury.hengli.com.au with esmtp (Exim 4.80 #3 (Debian)) id 1Yk4QH-0003Dj-2p for ; Mon, 20 Apr 2015 15:39:09 +1000 Sender: linux-crypto-owner@vger.kernel.org List-ID: This patch adds the function crypto_rng_set_entropy. It is only meant to be used by testmgr when testing RNG implementations by providing fixed entropy data in order to verify test vectors. Signed-off-by: Herbert Xu --- include/crypto/internal/rng.h | 6 ++++++ include/crypto/rng.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/include/crypto/internal/rng.h b/include/crypto/internal/rng.h index 76f3c95..93d41bc 100644 --- a/include/crypto/internal/rng.h +++ b/include/crypto/internal/rng.h @@ -26,4 +26,10 @@ static inline void *crypto_rng_ctx(struct crypto_rng *tfm) return crypto_tfm_ctx(&tfm->base); } +static inline void crypto_rng_set_entropy(struct crypto_rng *tfm, + const u8 *data, unsigned int len) +{ + crypto_rng_alg(tfm)->set_ent(tfm, data, len); +} + #endif diff --git a/include/crypto/rng.h b/include/crypto/rng.h index 133f044..cc22e52 100644 --- a/include/crypto/rng.h +++ b/include/crypto/rng.h @@ -32,6 +32,8 @@ struct crypto_rng; * up a new state, the seed must be provided by the * consumer while invoking this function. The required * size of the seed is defined with @seedsize . + * @set_ent: Set entropy that would otherwise be obtained from + * entropy source. Internal use only. * @seedsize: The seed size required for a random number generator * initialization defined with this variable. Some * random number generators does not require a seed @@ -45,6 +47,8 @@ struct rng_alg { const u8 *src, unsigned int slen, u8 *dst, unsigned int dlen); int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen); + void (*set_ent)(struct crypto_rng *tfm, const u8 *data, + unsigned int len); unsigned int seedsize;