crypto: rng - Make DRBG the default RNG
This patch creates a new invisible Kconfig option CRYPTO_RNG_DEFAULT
that simply selects the DRBG. This new option is then selected
by the IV generators.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 91018d9..cb7806f 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -78,6 +78,10 @@
tristate
select CRYPTO_ALGAPI2
+config CRYPTO_RNG_DEFAULT
+ tristate
+ select CRYPTO_DRBG_MENU
+
config CRYPTO_PCOMP
tristate
select CRYPTO_PCOMP2
@@ -234,7 +238,7 @@
select CRYPTO_AEAD
select CRYPTO_BLKCIPHER
select CRYPTO_NULL
- select CRYPTO_RNG
+ select CRYPTO_RNG_DEFAULT
help
This IV generator generates an IV based on a sequence number by
xoring it with a salt. This algorithm is mainly useful for CTR
@@ -243,7 +247,7 @@
tristate "Encrypted Chain IV Generator"
select CRYPTO_AEAD
select CRYPTO_NULL
- select CRYPTO_RNG
+ select CRYPTO_RNG_DEFAULT
default m
help
This IV generator generates an IV based on the encryption of
@@ -1484,7 +1488,6 @@
config CRYPTO_ANSI_CPRNG
tristate "Pseudo Random Number Generation for Cryptographic modules"
- default m
select CRYPTO_AES
select CRYPTO_RNG
help
@@ -1502,11 +1505,9 @@
if CRYPTO_DRBG_MENU
config CRYPTO_DRBG_HMAC
- bool "Enable HMAC DRBG"
+ bool
default y
select CRYPTO_HMAC
- help
- Enable the HMAC DRBG variant as defined in NIST SP800-90A.
config CRYPTO_DRBG_HASH
bool "Enable Hash DRBG"
@@ -1522,7 +1523,7 @@
config CRYPTO_DRBG
tristate
- default CRYPTO_DRBG_MENU if (CRYPTO_DRBG_HMAC || CRYPTO_DRBG_HASH || CRYPTO_DRBG_CTR)
+ default CRYPTO_DRBG_MENU
select CRYPTO_RNG
select CRYPTO_JITTERENTROPY