crypto: rng - RNG interface and implementation

This patch adds a random number generator interface as well as a cryptographic pseudo-random number generator based on AES. It is meant to be used in cases where a deterministic CPRNG is required. One of the first applications will be as an input in the IPsec IV generation process. Signed-off-by: Neil Horman <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
thomasl · Aug 29, 2008 · 17f0f4a · 17f0f4a
1 parent ccb778e
commit 17f0f4a
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Showing 8 changed files with 754 additions and 1 deletion.
diff --git a/crypto/Kconfig b/crypto/Kconfig
@@ -46,6 +46,10 @@ config CRYPTO_HASH
 	tristate
 	select CRYPTO_ALGAPI
 
+config CRYPTO_RNG
+	tristate
+	select CRYPTO_ALGAPI
+
 config CRYPTO_MANAGER
 	tristate "Cryptographic algorithm manager"
 	select CRYPTO_AEAD
@@ -689,6 +693,18 @@ config CRYPTO_LZO
 	help
 	  This is the LZO algorithm.
 
+comment "Random Number Generation"
+
+config CRYPTO_ANSI_CPRNG
+	tristate "Pseudo Random Number Generation for Cryptographic modules"
+	select CRYPTO_AES
+	select CRYPTO_RNG
+	select CRYPTO_FIPS
+	help
+	  This option enables the generic pseudo random number generator
+	  for cryptographic modules.  Uses the Algorithm specified in
+	  ANSI X9.31 A.2.4
+
 source "drivers/crypto/Kconfig"
 
 endif	# if CRYPTO
diff --git a/crypto/Makefile b/crypto/Makefile
@@ -73,7 +73,9 @@ obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
 obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
 obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o
 obj-$(CONFIG_CRYPTO_LZO) += lzo.o
-
+obj-$(CONFIG_CRYPTO_RNG) += rng.o
+obj-$(CONFIG_CRYPTO_RNG) += krng.o
+obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o
 obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
 
 #