crypto: ansi_cprng - Remove unused ansi_cprng algorithm

Remove ansi_cprng, since it's obsolete and unused, as confirmed at
https://lore.kernel.org/r/aQxpnckYMgAAOLpZ@gondor.apana.org.au/

This was originally added in 2008, apparently as a FIPS approved random
number generator.  Whether this has ever belonged upstream is
questionable.  Either way, ansi_cprng is no longer usable for this
purpose, since it's been superseded by the more modern algorithms in
crypto/drbg.c, and FIPS itself no longer allows it.  (NIST SP 800-131A
Rev 1 (2015) says that RNGs based on ANSI X9.31 will be disallowed after
2015.  NIST SP 800-131A Rev 2 (2019) confirms they are now disallowed.)

Therefore, there is no reason to keep it around.

Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Haotian Zhang <vulab@iscas.ac.cn>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

15 files changed, 0 insertions, 15 deletions

diff --git a/arch/arm/configs/axm55xx_defconfig b/arch/arm/configs/axm55xx_defconfig
index 516689dc6cf1..f35d1e7efc7d 100644
--- a/arch/arm/configs/axm55xx_defconfig
+++ b/arch/arm/configs/axm55xx_defconfig
@@ -233,4 +233,3 @@ CONFIG_RCU_CPU_STALL_TIMEOUT=60
 CONFIG_DEBUG_USER=y
 CONFIG_CRYPTO_GCM=y
 CONFIG_CRYPTO_SHA256=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/clps711x_defconfig b/arch/arm/configs/clps711x_defconfig
index 6fa3477e6b02..f66d502ce2ef 100644
--- a/arch/arm/configs/clps711x_defconfig
+++ b/arch/arm/configs/clps711x_defconfig
@@ -75,5 +75,4 @@ CONFIG_MINIX_FS=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
 CONFIG_EARLY_PRINTK=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set
diff --git a/arch/arm/configs/dove_defconfig b/arch/arm/configs/dove_defconfig
index d76eb12d29a7..23d0b61402e4 100644
--- a/arch/arm/configs/dove_defconfig
+++ b/arch/arm/configs/dove_defconfig
@@ -126,7 +126,6 @@ CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_SHA512=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_CRYPTO_DEV_MARVELL_CESA=y
 CONFIG_PRINTK_TIME=y
 # CONFIG_DEBUG_BUGVERBOSE is not set
diff --git a/arch/arm/configs/ep93xx_defconfig b/arch/arm/configs/ep93xx_defconfig
index 2248afaf35b5..facdd4902470 100644
--- a/arch/arm/configs/ep93xx_defconfig
+++ b/arch/arm/configs/ep93xx_defconfig
@@ -119,4 +119,3 @@ CONFIG_DEBUG_SPINLOCK=y
 CONFIG_DEBUG_MUTEXES=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/jornada720_defconfig b/arch/arm/configs/jornada720_defconfig
index e6ec768f42e2..d57285cfefb2 100644
--- a/arch/arm/configs/jornada720_defconfig
+++ b/arch/arm/configs/jornada720_defconfig
@@ -92,4 +92,3 @@ CONFIG_NLS_UTF8=m
 CONFIG_DEBUG_KERNEL=y
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index c1291ca290b2..b0cadd878152 100644
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -228,7 +228,6 @@ CONFIG_CRYPTO_DES=y
 CONFIG_CRYPTO_CBC=y
 CONFIG_CRYPTO_CTR=y
 CONFIG_CRYPTO_XCBC=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_USER_API_SKCIPHER=y
 CONFIG_DMA_CMA=y
diff --git a/arch/arm/configs/lpc32xx_defconfig b/arch/arm/configs/lpc32xx_defconfig
index 9afccd76446b..2bddb0924a8c 100644
--- a/arch/arm/configs/lpc32xx_defconfig
+++ b/arch/arm/configs/lpc32xx_defconfig
@@ -177,7 +177,6 @@ CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_ASCII=y
 CONFIG_NLS_ISO8859_1=y
 CONFIG_NLS_UTF8=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
 # CONFIG_CRYPTO_HW is not set
 CONFIG_PRINTK_TIME=y
 CONFIG_DYNAMIC_DEBUG=y
diff --git a/arch/arm/configs/mmp2_defconfig b/arch/arm/configs/mmp2_defconfig
index 842a989baa27..d38e8d36fef2 100644
--- a/arch/arm/configs/mmp2_defconfig
+++ b/arch/arm/configs/mmp2_defconfig
@@ -78,4 +78,3 @@ CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
 CONFIG_DEBUG_MMP_UART3=y
 CONFIG_EARLY_PRINTK=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/mv78xx0_defconfig b/arch/arm/configs/mv78xx0_defconfig
index 3343f72de7ea..e9d6af34c4e1 100644
--- a/arch/arm/configs/mv78xx0_defconfig
+++ b/arch/arm/configs/mv78xx0_defconfig
@@ -121,4 +121,3 @@ CONFIG_DEBUG_KERNEL=y
 CONFIG_SCHEDSTATS=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/omap1_defconfig b/arch/arm/configs/omap1_defconfig
index 661e5d6894bd..c574aa090acb 100644
--- a/arch/arm/configs/omap1_defconfig
+++ b/arch/arm/configs/omap1_defconfig
@@ -220,7 +220,6 @@ CONFIG_CRYPTO_ECB=y
 CONFIG_CRYPTO_PCBC=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_FONTS=y
 CONFIG_FONT_8x8=y
 CONFIG_FONT_8x16=y
diff --git a/arch/arm/configs/orion5x_defconfig b/arch/arm/configs/orion5x_defconfig
index 62b9c6102789..1194ae1458f7 100644
--- a/arch/arm/configs/orion5x_defconfig
+++ b/arch/arm/configs/orion5x_defconfig
@@ -145,4 +145,3 @@ CONFIG_LATENCYTOP=y
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/pxa168_defconfig b/arch/arm/configs/pxa168_defconfig
index 4748c7d33cb8..8cbca84fe33a 100644
--- a/arch/arm/configs/pxa168_defconfig
+++ b/arch/arm/configs/pxa168_defconfig
@@ -48,4 +48,3 @@ CONFIG_MAGIC_SYSRQ=y
 # CONFIG_DEBUG_PREEMPT is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/pxa3xx_defconfig b/arch/arm/configs/pxa3xx_defconfig
index 381356faf382..07d422f0ff34 100644
--- a/arch/arm/configs/pxa3xx_defconfig
+++ b/arch/arm/configs/pxa3xx_defconfig
@@ -106,5 +106,4 @@ CONFIG_DEBUG_SPINLOCK=y
 CONFIG_DEBUG_SPINLOCK_SLEEP=y
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_USER=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set
diff --git a/arch/arm/configs/pxa910_defconfig b/arch/arm/configs/pxa910_defconfig
index 49b59c600ae1..71ed0d73f8a9 100644
--- a/arch/arm/configs/pxa910_defconfig
+++ b/arch/arm/configs/pxa910_defconfig
@@ -59,4 +59,3 @@ CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
 CONFIG_DEBUG_MMP_UART2=y
 CONFIG_EARLY_PRINTK=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
diff --git a/arch/arm/configs/spitz_defconfig b/arch/arm/configs/spitz_defconfig
index ac2a0f998c73..cd27bb960436 100644
--- a/arch/arm/configs/spitz_defconfig
+++ b/arch/arm/configs/spitz_defconfig
@@ -228,7 +228,6 @@ CONFIG_CRYPTO_KHAZAD=m
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_MD4=m
 CONFIG_CRYPTO_MICHAEL_MIC=m