linux-kernel - [PATCH v5 4/7] crypto: LRNG

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Message-ID: <1662129.L97dOHjXBe@positron.chronox.de>
Date:	Sun, 19 Jun 2016 18:00:46 +0200
From:	Stephan Mueller <smueller@...onox.de>
To:	herbert@...dor.apana.org.au
Cc:	Theodore Tso <tytso@....edu>, Andi Kleen <andi@...stfloor.org>,
	sandyinchina@...il.com, Jason Cooper <cryptography@...edaemon.net>,
	John Denker <jsd@...n.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Joe Perches <joe@...ches.com>, Pavel Machek <pavel@....cz>,
	George Spelvin <linux@...izon.com>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v5 4/7] crypto: LRNG - enable compile

Add LRNG compilation support.

Signed-off-by: Stephan Mueller <smueller@...onox.de>
---
 crypto/Kconfig  | 11 +++++++++++
 crypto/Makefile |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index c903f18..772d430 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1589,6 +1589,17 @@ config CRYPTO_JITTERENTROPY
 	  random numbers. This Jitterentropy RNG registers with
 	  the kernel crypto API and can be used by any caller.
 
+config CRYPTO_LRNG
+	bool "Linux Random Number Generator"
+	select CRYPTO_DRBG_MENU
+	select CRYPTO_CMAC if CRYPTO_DRBG_CTR
+	help
+	  The Linux Random Number Generator (LRNG) is the replacement
+	  of the legacy /dev/random provided with drivers/char/random.c.
+	  It generates entropy from different noise sources and
+	  delivers significant entropy during boot. The LRNG only
+	  works with the presence of a high-resolution timer.
+
 config CRYPTO_USER_API
 	tristate
 
diff --git a/crypto/Makefile b/crypto/Makefile
index 4f4ef7e..f013fac 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -114,6 +114,8 @@ obj-$(CONFIG_CRYPTO_DRBG) += drbg.o
 obj-$(CONFIG_CRYPTO_JITTERENTROPY) += jitterentropy_rng.o
 CFLAGS_jitterentropy.o = -O0
 jitterentropy_rng-y := jitterentropy.o jitterentropy-kcapi.o
+obj-$(CONFIG_CRYPTO_LRNG) += lrng.o
+lrng-y += lrng_base.o lrng_kcapi.o
 obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
 obj-$(CONFIG_CRYPTO_GHASH) += ghash-generic.o
 obj-$(CONFIG_CRYPTO_USER_API) += af_alg.o
-- 
2.5.5