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/[e-mail]/

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purpose, since it's been superseded by the more modern algorithms in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 <[e-mail]>
Cc: Haotian Zhang <[e-mail]>
Cc: Neil Horman <[e-mail]>
Signed-off-by: Eric Biggers <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

Documentation/crypto/userspace-if.rst

···
 
 
 Depending on the RNG type, the RNG must be seeded. The seed is provided
-using the setsockopt interface to set the key. For example, the
-ansi_cprng requires a seed. The DRBGs do not require a seed, but may be
-seeded. The seed is also known as a *Personalization String* in NIST SP 800-90A
-standard.
+using the setsockopt interface to set the key. The SP800-90A DRBGs do
+not require a seed, but may be seeded. The seed is also known as a
+*Personalization String* in NIST SP 800-90A standard.
 
 Using the read()/recvmsg() system calls, random numbers can be obtained.
 The kernel generates at most 128 bytes in one call. If user space

MAINTAINERS

···
 M:	Neil Horman <[e-mail]>
 L:	[e-mail]
 S:	Maintained
-F:	crypto/ansi_cprng.c
 F:	crypto/rng.c
 
 CS3308 MEDIA DRIVER

arch/arm/configs/axm55xx_defconfig

···
 CONFIG_DEBUG_USER=y
 CONFIG_CRYPTO_GCM=y
 CONFIG_CRYPTO_SHA256=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/clps711x_defconfig

···
 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

arch/arm/configs/dove_defconfig

···
 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

arch/arm/configs/ep93xx_defconfig

···
 CONFIG_DEBUG_MUTEXES=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/jornada720_defconfig

···
 CONFIG_DEBUG_KERNEL=y
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/keystone_defconfig

···
 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

arch/arm/configs/lpc32xx_defconfig

···
 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

arch/arm/configs/mmp2_defconfig

···
 CONFIG_DEBUG_LL=y
 CONFIG_DEBUG_MMP_UART3=y
 CONFIG_EARLY_PRINTK=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/mv78xx0_defconfig

···
 CONFIG_SCHEDSTATS=y
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/omap1_defconfig

···
 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

arch/arm/configs/orion5x_defconfig

···
 # CONFIG_FTRACE is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/pxa168_defconfig

···
 # CONFIG_DEBUG_PREEMPT is not set
 CONFIG_DEBUG_USER=y
 CONFIG_DEBUG_LL=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/pxa3xx_defconfig

···
 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

arch/arm/configs/pxa910_defconfig

···
 CONFIG_DEBUG_LL=y
 CONFIG_DEBUG_MMP_UART2=y
 CONFIG_EARLY_PRINTK=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/arm/configs/spitz_defconfig

···
 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

arch/arm64/configs/defconfig

···
 CONFIG_CRYPTO_BENCHMARK=m
 CONFIG_CRYPTO_ECHAINIV=y
 CONFIG_CRYPTO_MICHAEL_MIC=m
-CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_GHASH_ARM64_CE=y
 CONFIG_CRYPTO_SHA3_ARM64=m

arch/hexagon/configs/comet_defconfig

···
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
 CONFIG_CRYPTO_MD5=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set
 CONFIG_FRAME_WARN=0
 CONFIG_MAGIC_SYSRQ=y

arch/m68k/configs/amcore_defconfig

···
 # CONFIG_SCHED_DEBUG is not set
 # CONFIG_DEBUG_BUGVERBOSE is not set
 # CONFIG_CRYPTO_ECHAINIV is not set
-CONFIG_CRYPTO_ANSI_CPRNG=y
 # CONFIG_CRYPTO_HW is not set

arch/m68k/configs/amiga_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/apollo_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/atari_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/bvme6000_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/hp300_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/mac_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/multi_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/mvme147_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/mvme16x_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/q40_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/stmark2_defconfig

···
 CONFIG_CRAMFS=y
 CONFIG_SQUASHFS=y
 CONFIG_ROMFS_FS=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
 # CONFIG_CRYPTO_HW is not set
 CONFIG_PRINTK_TIME=y
 # CONFIG_DEBUG_BUGVERBOSE is not set

arch/m68k/configs/sun3_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/m68k/configs/sun3x_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 CONFIG_CRYPTO_USER_API_HASH=m

arch/mips/configs/decstation_64_defconfig

···
 CONFIG_CRYPTO_842=m
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 # CONFIG_CRYPTO_HW is not set

arch/mips/configs/decstation_defconfig

···
 CONFIG_CRYPTO_842=m
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 # CONFIG_CRYPTO_HW is not set

arch/mips/configs/decstation_r4k_defconfig

···
 CONFIG_CRYPTO_842=m
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_DRBG_HASH=y
 CONFIG_CRYPTO_DRBG_CTR=y
 # CONFIG_CRYPTO_HW is not set

arch/s390/configs/debug_defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m

arch/s390/configs/defconfig

···
 CONFIG_CRYPTO_LZ4=m
 CONFIG_CRYPTO_LZ4HC=m
 CONFIG_CRYPTO_ZSTD=m
-CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_JITTERENTROPY_OSR=1
 CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m

arch/sh/configs/ap325rxa_defconfig

···
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_CRYPTO=y
 CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/apsh4a3a_defconfig

···
 # CONFIG_DEBUG_BUGVERBOSE is not set
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 # CONFIG_FTRACE is not set
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/apsh4ad0a_defconfig

···
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 CONFIG_DEBUG_VM=y
 CONFIG_DWARF_UNWINDER=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/dreamcast_defconfig

···
 CONFIG_PROC_KCORE=y
 CONFIG_TMPFS=y
 CONFIG_HUGETLBFS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_GENERIC=y

arch/sh/configs/ecovec24_defconfig

···
 CONFIG_DEBUG_FS=y
 CONFIG_CRYPTO=y
 CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/edosk7760_defconfig

···
 CONFIG_CRYPTO=y
 CONFIG_CRYPTO_MD5=y
 CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/espt_defconfig

···
 CONFIG_NLS_UTF8=y
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/hp6xx_defconfig

···
 CONFIG_CRYPTO_ECB=y
 CONFIG_CRYPTO_PCBC=y
 CONFIG_CRYPTO_MD5=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/landisk_defconfig

···
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_NLS_CODEPAGE_932=y
 CONFIG_SH_STANDARD_BIOS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/lboxre2_defconfig

···
 CONFIG_ROMFS_FS=y
 CONFIG_NLS_CODEPAGE_437=y
 CONFIG_SH_STANDARD_BIOS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/migor_defconfig

···
 CONFIG_NFS_FS=y
 CONFIG_ROOT_NFS=y
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/r7780mp_defconfig

···
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m
 CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/r7785rp_defconfig

···
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m
 CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/rts7751r2d1_defconfig

···
 CONFIG_MINIX_FS=y
 CONFIG_NLS_CODEPAGE_932=y
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/rts7751r2dplus_defconfig

···
 CONFIG_MINIX_FS=y
 CONFIG_NLS_CODEPAGE_932=y
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sdk7780_defconfig

···
 CONFIG_SH_STANDARD_BIOS=y
 CONFIG_CRYPTO_MD5=y
 CONFIG_CRYPTO_DES=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sdk7786_defconfig

···
 CONFIG_DMA_API_DEBUG=y
 CONFIG_DEBUG_STACK_USAGE=y
 CONFIG_DWARF_UNWINDER=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7206_defconfig

···
 CONFIG_DEBUG_STACK_USAGE=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/se7343_defconfig

···
 CONFIG_NFS_FS=y
 CONFIG_NFS_V3=y
 CONFIG_NFSD=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7705_defconfig

···
 CONFIG_JFFS2_FS=y
 CONFIG_NFS_FS=y
 CONFIG_ROOT_NFS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7712_defconfig

···
 CONFIG_FRAME_POINTER=y
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7721_defconfig

···
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 CONFIG_FRAME_POINTER=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7722_defconfig

···
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_FS=y
 CONFIG_SH_STANDARD_BIOS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7724_defconfig

···
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_CRYPTO=y
 CONFIG_CRYPTO_CBC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7750_defconfig

···
 CONFIG_PARTITION_ADVANCED=y
 # CONFIG_MSDOS_PARTITION is not set
 # CONFIG_ENABLE_MUST_CHECK is not set
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7751_defconfig

···
 CONFIG_PROC_KCORE=y
 CONFIG_TMPFS=y
 CONFIG_JFFS2_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/se7780_defconfig

···
 CONFIG_NFS_V3=y
 CONFIG_ROOT_NFS=y
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sh03_defconfig

···
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_SHA1=y
 CONFIG_CRYPTO_DEFLATE=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_GENERIC=y

arch/sh/configs/sh2007_defconfig

···
 CONFIG_CRYPTO_TWOFISH=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/sh7710voipgw_defconfig

···
 # CONFIG_DNOTIFY is not set
 CONFIG_JFFS2_FS=y
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sh7757lcr_defconfig

···
 # CONFIG_DEBUG_BUGVERBOSE is not set
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 # CONFIG_FTRACE is not set
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sh7763rdp_defconfig

···
 CONFIG_NLS_UTF8=y
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_DEBUG_FS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/sh7785lcr_32bit_defconfig

···
 CONFIG_LATENCYTOP=y
 # CONFIG_FTRACE is not set
 CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/sh7785lcr_defconfig

···
 CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_DEBUG_BUGVERBOSE is not set
 CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sh/configs/shmin_defconfig

···
 CONFIG_NFS_V3=y
 CONFIG_ROOT_NFS=y
 CONFIG_SH_STANDARD_BIOS=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/shx3_defconfig

···
 CONFIG_FRAME_POINTER=y
 CONFIG_SH_STANDARD_BIOS=y
 CONFIG_DEBUG_STACK_USAGE=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/titan_defconfig

···
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/ul2_defconfig

···
 CONFIG_NLS_ISO8859_1=y
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_CRYPTO_MICHAEL_MIC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set

arch/sh/configs/urquell_defconfig

···
 # CONFIG_FTRACE is not set
 # CONFIG_DUMP_CODE is not set
 CONFIG_CRYPTO_HMAC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sparc/configs/sparc32_defconfig

···
 CONFIG_CRYPTO_CAST6=m
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_TWOFISH=m
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 # CONFIG_CRYPTO_HW is not set

arch/sparc/configs/sparc64_defconfig

···
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_TEA=m
 CONFIG_CRYPTO_TWOFISH=m
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
 CONFIG_VCC=m
 CONFIG_PATA_CMD64X=y
 CONFIG_IP_PNP=y

arch/xtensa/configs/audio_kc705_defconfig

···
 CONFIG_RCU_TRACE=y
 # CONFIG_FTRACE is not set
 # CONFIG_S32C1I_SELFTEST is not set
-CONFIG_CRYPTO_ANSI_CPRNG=y

arch/xtensa/configs/generic_kc705_defconfig

···
 # CONFIG_FTRACE is not set
 CONFIG_LD_NO_RELAX=y
 # CONFIG_S32C1I_SELFTEST is not set
-CONFIG_CRYPTO_ANSI_CPRNG=y

arch/xtensa/configs/iss_defconfig

···
 CONFIG_TMPFS=y
 # CONFIG_FRAME_POINTER is not set
 CONFIG_DETECT_HUNG_TASK=y
-CONFIG_CRYPTO_ANSI_CPRNG=y

arch/xtensa/configs/nommu_kc705_defconfig

···
 # CONFIG_FTRACE is not set
 # CONFIG_LD_NO_RELAX is not set
 # CONFIG_CRYPTO_ECHAINIV is not set
-CONFIG_CRYPTO_ANSI_CPRNG=y

arch/xtensa/configs/smp_lx200_defconfig

···
 # CONFIG_FTRACE is not set
 CONFIG_LD_NO_RELAX=y
 # CONFIG_S32C1I_SELFTEST is not set
-CONFIG_CRYPTO_ANSI_CPRNG=y

arch/xtensa/configs/virt_defconfig

···
 CONFIG_CRYPTO_ECHAINIV=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_CRYPTO_DEV_VIRTIO=y
 CONFIG_FONTS=y
 CONFIG_PRINTK_TIME=y

arch/xtensa/configs/xip_kc705_defconfig

···
 CONFIG_CRYPTO_ECHAINIV=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_LZO=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
 CONFIG_PRINTK_TIME=y
 CONFIG_DYNAMIC_DEBUG=y
 CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y

crypto/Kconfig

···
 
 config CRYPTO_FIPS
 	bool "FIPS 200 compliance"
-	depends on (CRYPTO_ANSI_CPRNG || CRYPTO_DRBG) && CRYPTO_SELFTESTS
+	depends on CRYPTO_DRBG && CRYPTO_SELFTESTS
 	depends on (MODULE_SIG || !MODULES)
 	help
 	  This option enables the fips boot option which is
···
 endmenu
 
 menu "Random number generation"
-
-config CRYPTO_ANSI_CPRNG
-	tristate "ANSI PRNG (Pseudo Random Number Generator)"
-	select CRYPTO_AES
-	select CRYPTO_RNG
-	help
-	  Pseudo RNG (random number generator) (ANSI X9.31 Appendix A.2.4)
-
-	  This uses the AES cipher algorithm.
-
-	  Note that this option must be enabled if CRYPTO_FIPS is selected
 
 menuconfig CRYPTO_DRBG_MENU
 	tristate "NIST SP800-90A DRBG (Deterministic Random Bit Generator)"

crypto/Makefile

···
 obj-$(CONFIG_CRYPTO_XXHASH) += xxhash_generic.o
 obj-$(CONFIG_CRYPTO_842) += 842.o
 obj-$(CONFIG_CRYPTO_RNG2) += rng.o
-obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o
 obj-$(CONFIG_CRYPTO_DRBG) += drbg.o
 obj-$(CONFIG_CRYPTO_JITTERENTROPY) += jitterentropy_rng.o
 CFLAGS_jitterentropy.o = -O0

crypto/ansi_cprng.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * PRNG: Pseudo Random Number Generator
- *       Based on NIST Recommended PRNG From ANSI X9.31 Appendix A.2.4 using
- *       AES 128 cipher
- *
- *  (C) Neil Horman <[e-mail]>
- */
-
-#include <crypto/internal/cipher.h>
-#include <crypto/internal/rng.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/string.h>
-
-#define DEFAULT_PRNG_KEY "0123456789abcdef"
-#define DEFAULT_PRNG_KSZ 16
-#define DEFAULT_BLK_SZ 16
-#define DEFAULT_V_SEED "zaybxcwdveuftgsh"
-
-/*
- * Flags for the prng_context flags field
- */
-
-#define PRNG_FIXED_SIZE 0x1
-#define PRNG_NEED_RESET 0x2
-
-/*
- * Note: DT is our counter value
- *	 I is our intermediate value
- *	 V is our seed vector
- * See http://csrc.nist.gov/groups/STM/cavp/documents/rng/931rngext.pdf
- * for implementation details
- */
-
-
-struct prng_context {
-	spinlock_t prng_lock;
-	unsigned char rand_data[DEFAULT_BLK_SZ];
-	unsigned char last_rand_data[DEFAULT_BLK_SZ];
-	unsigned char DT[DEFAULT_BLK_SZ];
-	unsigned char I[DEFAULT_BLK_SZ];
-	unsigned char V[DEFAULT_BLK_SZ];
-	u32 rand_data_valid;
-	struct crypto_cipher *tfm;
-	u32 flags;
-};
-
-static int dbg;
-
-static void hexdump(char *note, unsigned char *buf, unsigned int len)
-{
-	if (dbg) {
-		printk(KERN_CRIT "%s", note);
-		print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET,
-				16, 1,
-				buf, len, false);
-	}
-}
-
-#define dbgprint(format, args...) do {\
-if (dbg)\
-	printk(format, ##args);\
-} while (0)
-
-static void xor_vectors(unsigned char *in1, unsigned char *in2,
-			unsigned char *out, unsigned int size)
-{
-	int i;
-
-	for (i = 0; i < size; i++)
-		out[i] = in1[i] ^ in2[i];
-
-}
-/*
- * Returns DEFAULT_BLK_SZ bytes of random data per call
- * returns 0 if generation succeeded, <0 if something went wrong
- */
-static int _get_more_prng_bytes(struct prng_context *ctx, int cont_test)
-{
-	int i;
-	unsigned char tmp[DEFAULT_BLK_SZ];
-	unsigned char *output = NULL;
-
-
-	dbgprint(KERN_CRIT "Calling _get_more_prng_bytes for context %p\n",
-		ctx);
-
-	hexdump("Input DT: ", ctx->DT, DEFAULT_BLK_SZ);
-	hexdump("Input I: ", ctx->I, DEFAULT_BLK_SZ);
-	hexdump("Input V: ", ctx->V, DEFAULT_BLK_SZ);
-
-	/*
-	 * This algorithm is a 3 stage state machine
-	 */
-	for (i = 0; i < 3; i++) {
-
-		switch (i) {
-		case 0:
-			/*
-			 * Start by encrypting the counter value
-			 * This gives us an intermediate value I
-			 */
-			memcpy(tmp, ctx->DT, DEFAULT_BLK_SZ);
-			output = ctx->I;
-			hexdump("tmp stage 0: ", tmp, DEFAULT_BLK_SZ);
-			break;
-		case 1:
-
-			/*
-			 * Next xor I with our secret vector V
-			 * encrypt that result to obtain our
-			 * pseudo random data which we output
-			 */
-			xor_vectors(ctx->I, ctx->V, tmp, DEFAULT_BLK_SZ);
-			hexdump("tmp stage 1: ", tmp, DEFAULT_BLK_SZ);
-			output = ctx->rand_data;
-			break;
-		case 2:
-			/*
-			 * First check that we didn't produce the same
-			 * random data that we did last time around through this
-			 */
-			if (!memcmp(ctx->rand_data, ctx->last_rand_data,
-					DEFAULT_BLK_SZ)) {
-				if (cont_test) {
-					panic("cprng %p Failed repetition check!\n",
-						ctx);
-				}
-
-				printk(KERN_ERR
-					"ctx %p Failed repetition check!\n",
-					ctx);
-
-				ctx->flags |= PRNG_NEED_RESET;
-				return -EINVAL;
-			}
-			memcpy(ctx->last_rand_data, ctx->rand_data,
-				DEFAULT_BLK_SZ);
-
-			/*
-			 * Lastly xor the random data with I
-			 * and encrypt that to obtain a new secret vector V
-			 */
-			xor_vectors(ctx->rand_data, ctx->I, tmp,
-				DEFAULT_BLK_SZ);
-			output = ctx->V;
-			hexdump("tmp stage 2: ", tmp, DEFAULT_BLK_SZ);
-			break;
-		}
-
-
-		/* do the encryption */
-		crypto_cipher_encrypt_one(ctx->tfm, output, tmp);
-
-	}
-
-	/*
-	 * Now update our DT value
-	 */
-	for (i = DEFAULT_BLK_SZ - 1; i >= 0; i--) {
-		ctx->DT[i] += 1;
-		if (ctx->DT[i] != 0)
-			break;
-	}
-
-	dbgprint("Returning new block for context %p\n", ctx);
-	ctx->rand_data_valid = 0;
-
-	hexdump("Output DT: ", ctx->DT, DEFAULT_BLK_SZ);
-	hexdump("Output I: ", ctx->I, DEFAULT_BLK_SZ);
-	hexdump("Output V: ", ctx->V, DEFAULT_BLK_SZ);
-	hexdump("New Random Data: ", ctx->rand_data, DEFAULT_BLK_SZ);
-
-	return 0;
-}
-
-/* Our exported functions */
-static int get_prng_bytes(char *buf, size_t nbytes, struct prng_context *ctx,
-				int do_cont_test)
-{
-	unsigned char *ptr = buf;
-	unsigned int byte_count = (unsigned int)nbytes;
-	int err;
-
-
-	spin_lock_bh(&ctx->prng_lock);
-
-	err = -EINVAL;
-	if (ctx->flags & PRNG_NEED_RESET)
-		goto done;
-
-	/*
-	 * If the FIXED_SIZE flag is on, only return whole blocks of
-	 * pseudo random data
-	 */
-	err = -EINVAL;
-	if (ctx->flags & PRNG_FIXED_SIZE) {
-		if (nbytes < DEFAULT_BLK_SZ)
-			goto done;
-		byte_count = DEFAULT_BLK_SZ;
-	}
-
-	/*
-	 * Return 0 in case of success as mandated by the kernel
-	 * crypto API interface definition.
-	 */
-	err = 0;
-
-	dbgprint(KERN_CRIT "getting %d random bytes for context %p\n",
-		byte_count, ctx);
-
-
-remainder:
-	if (ctx->rand_data_valid == DEFAULT_BLK_SZ) {
-		if (_get_more_prng_bytes(ctx, do_cont_test) < 0) {
-			memset(buf, 0, nbytes);
-			err = -EINVAL;
-			goto done;
-		}
-	}
-
-	/*
-	 * Copy any data less than an entire block
-	 */
-	if (byte_count < DEFAULT_BLK_SZ) {
-empty_rbuf:
-		while (ctx->rand_data_valid < DEFAULT_BLK_SZ) {
-			*ptr = ctx->rand_data[ctx->rand_data_valid];
-			ptr++;
-			byte_count--;
-			ctx->rand_data_valid++;
-			if (byte_count == 0)
-				goto done;
-		}
-	}
-
-	/*
-	 * Now copy whole blocks
-	 */
-	for (; byte_count >= DEFAULT_BLK_SZ; byte_count -= DEFAULT_BLK_SZ) {
-		if (ctx->rand_data_valid == DEFAULT_BLK_SZ) {
-			if (_get_more_prng_bytes(ctx, do_cont_test) < 0) {
-				memset(buf, 0, nbytes);
-				err = -EINVAL;
-				goto done;
-			}
-		}
-		if (ctx->rand_data_valid > 0)
-			goto empty_rbuf;
-		memcpy(ptr, ctx->rand_data, DEFAULT_BLK_SZ);
-		ctx->rand_data_valid += DEFAULT_BLK_SZ;
-		ptr += DEFAULT_BLK_SZ;
-	}
-
-	/*
-	 * Now go back and get any remaining partial block
-	 */
-	if (byte_count)
-		goto remainder;
-
-done:
-	spin_unlock_bh(&ctx->prng_lock);
-	dbgprint(KERN_CRIT "returning %d from get_prng_bytes in context %p\n",
-		err, ctx);
-	return err;
-}
-
-static void free_prng_context(struct prng_context *ctx)
-{
-	crypto_free_cipher(ctx->tfm);
-}
-
-static int reset_prng_context(struct prng_context *ctx,
-			      const unsigned char *key, size_t klen,
-			      const unsigned char *V, const unsigned char *DT)
-{
-	int ret;
-	const unsigned char *prng_key;
-
-	spin_lock_bh(&ctx->prng_lock);
-	ctx->flags |= PRNG_NEED_RESET;
-
-	prng_key = (key != NULL) ? key : (unsigned char *)DEFAULT_PRNG_KEY;
-
-	if (!key)
-		klen = DEFAULT_PRNG_KSZ;
-
-	if (V)
-		memcpy(ctx->V, V, DEFAULT_BLK_SZ);
-	else
-		memcpy(ctx->V, DEFAULT_V_SEED, DEFAULT_BLK_SZ);
-
-	if (DT)
-		memcpy(ctx->DT, DT, DEFAULT_BLK_SZ);
-	else
-		memset(ctx->DT, 0, DEFAULT_BLK_SZ);
-
-	memset(ctx->rand_data, 0, DEFAULT_BLK_SZ);
-	memset(ctx->last_rand_data, 0, DEFAULT_BLK_SZ);
-
-	ctx->rand_data_valid = DEFAULT_BLK_SZ;
-
-	ret = crypto_cipher_setkey(ctx->tfm, prng_key, klen);
-	if (ret) {
-		dbgprint(KERN_CRIT "PRNG: setkey() failed flags=%x\n",
-			crypto_cipher_get_flags(ctx->tfm));
-		goto out;
-	}
-
-	ret = 0;
-	ctx->flags &= ~PRNG_NEED_RESET;
-out:
-	spin_unlock_bh(&ctx->prng_lock);
-	return ret;
-}
-
-static int cprng_init(struct crypto_tfm *tfm)
-{
-	struct prng_context *ctx = crypto_tfm_ctx(tfm);
-
-	spin_lock_init(&ctx->prng_lock);
-	ctx->tfm = crypto_alloc_cipher("aes", 0, 0);
-	if (IS_ERR(ctx->tfm)) {
-		dbgprint(KERN_CRIT "Failed to alloc tfm for context %p\n",
-				ctx);
-		return PTR_ERR(ctx->tfm);
-	}
-
-	if (reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL) < 0)
-		return -EINVAL;
-
-	/*
-	 * after allocation, we should always force the user to reset
-	 * so they don't inadvertently use the insecure default values
-	 * without specifying them intentially
-	 */
-	ctx->flags |= PRNG_NEED_RESET;
-	return 0;
-}
-
-static void cprng_exit(struct crypto_tfm *tfm)
-{
-	free_prng_context(crypto_tfm_ctx(tfm));
-}
-
-static int cprng_get_random(struct crypto_rng *tfm,
-			    const u8 *src, unsigned int slen,
-			    u8 *rdata, unsigned int dlen)
-{
-	struct prng_context *prng = crypto_rng_ctx(tfm);
-
-	return get_prng_bytes(rdata, dlen, prng, 0);
-}
-
-/*
- *  This is the cprng_registered reset method the seed value is
- *  interpreted as the tuple { V KEY DT}
- *  V and KEY are required during reset, and DT is optional, detected
- *  as being present by testing the length of the seed
- */
-static int cprng_reset(struct crypto_rng *tfm,
-		       const u8 *seed, unsigned int slen)
-{
-	struct prng_context *prng = crypto_rng_ctx(tfm);
-	const u8 *key = seed + DEFAULT_BLK_SZ;
-	const u8 *dt = NULL;
-
-	if (slen < DEFAULT_PRNG_KSZ + DEFAULT_BLK_SZ)
-		return -EINVAL;
-
-	if (slen >= (2 * DEFAULT_BLK_SZ + DEFAULT_PRNG_KSZ))
-		dt = key + DEFAULT_PRNG_KSZ;
-
-	reset_prng_context(prng, key, DEFAULT_PRNG_KSZ, seed, dt);
-
-	if (prng->flags & PRNG_NEED_RESET)
-		return -EINVAL;
-	return 0;
-}
-
-#ifdef CONFIG_CRYPTO_FIPS
-static int fips_cprng_get_random(struct crypto_rng *tfm,
-				 const u8 *src, unsigned int slen,
-				 u8 *rdata, unsigned int dlen)
-{
-	struct prng_context *prng = crypto_rng_ctx(tfm);
-
-	return get_prng_bytes(rdata, dlen, prng, 1);
-}
-
-static int fips_cprng_reset(struct crypto_rng *tfm,
-			    const u8 *seed, unsigned int slen)
-{
-	u8 rdata[DEFAULT_BLK_SZ];
-	const u8 *key = seed + DEFAULT_BLK_SZ;
-	int rc;
-
-	struct prng_context *prng = crypto_rng_ctx(tfm);
-
-	if (slen < DEFAULT_PRNG_KSZ + DEFAULT_BLK_SZ)
-		return -EINVAL;
-
-	/* fips strictly requires seed != key */
-	if (!memcmp(seed, key, DEFAULT_PRNG_KSZ))
-		return -EINVAL;
-
-	rc = cprng_reset(tfm, seed, slen);
-
-	if (!rc)
-		goto out;
-
-	/* this primes our continuity test */
-	rc = get_prng_bytes(rdata, DEFAULT_BLK_SZ, prng, 0);
-	prng->rand_data_valid = DEFAULT_BLK_SZ;
-
-out:
-	return rc;
-}
-#endif
-
-static struct rng_alg rng_algs[] = { {
-	.generate		= cprng_get_random,
-	.seed			= cprng_reset,
-	.seedsize		= DEFAULT_PRNG_KSZ + 2 * DEFAULT_BLK_SZ,
-	.base			=	{
-		.cra_name		= "stdrng",
-		.cra_driver_name	= "ansi_cprng",
-		.cra_priority		= 100,
-		.cra_ctxsize		= sizeof(struct prng_context),
-		.cra_module		= THIS_MODULE,
-		.cra_init		= cprng_init,
-		.cra_exit		= cprng_exit,
-	}
-#ifdef CONFIG_CRYPTO_FIPS
-}, {
-	.generate		= fips_cprng_get_random,
-	.seed			= fips_cprng_reset,
-	.seedsize		= DEFAULT_PRNG_KSZ + 2 * DEFAULT_BLK_SZ,
-	.base			=	{
-		.cra_name		= "fips(ansi_cprng)",
-		.cra_driver_name	= "fips_ansi_cprng",
-		.cra_priority		= 300,
-		.cra_ctxsize		= sizeof(struct prng_context),
-		.cra_module		= THIS_MODULE,
-		.cra_init		= cprng_init,
-		.cra_exit		= cprng_exit,
-	}
-#endif
-} };
-
-/* Module initalization */
-static int __init prng_mod_init(void)
-{
-	return crypto_register_rngs(rng_algs, ARRAY_SIZE(rng_algs));
-}
-
-static void __exit prng_mod_fini(void)
-{
-	crypto_unregister_rngs(rng_algs, ARRAY_SIZE(rng_algs));
-}
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Software Pseudo Random Number Generator");
-MODULE_AUTHOR("Neil Horman <[e-mail]>");
-module_param(dbg, int, 0);
-MODULE_PARM_DESC(dbg, "Boolean to enable debugging (0/1 == off/on)");
-module_init(prng_mod_init);
-module_exit(prng_mod_fini);
-MODULE_ALIAS_CRYPTO("stdrng");
-MODULE_ALIAS_CRYPTO("ansi_cprng");
-MODULE_IMPORT_NS("CRYPTO_INTERNAL");

crypto/tcrypt.c

···
 		ret = min(ret, tcrypt_test("hmac(streebog512)"));
 		break;
 
-	case 150:
-		ret = min(ret, tcrypt_test("ansi_cprng"));
-		break;
-
 	case 151:
 		ret = min(ret, tcrypt_test("rfc4106(gcm(aes))"));
 		break;

crypto/testmgr.c

···
 	unsigned int count;
 };
 
-struct cprng_test_suite {
-	const struct cprng_testvec *vecs;
-	unsigned int count;
-};
-
 struct drbg_test_suite {
 	const struct drbg_testvec *vecs;
 	unsigned int count;
···
 		struct cipher_test_suite cipher;
 		struct comp_test_suite comp;
 		struct hash_test_suite hash;
-		struct cprng_test_suite cprng;
 		struct drbg_test_suite drbg;
 		struct akcipher_test_suite akcipher;
 		struct sig_test_suite sig;
···
 	return ret;
 }
 
-static int test_cprng(struct crypto_rng *tfm,
-		      const struct cprng_testvec *template,
-		      unsigned int tcount)
-{
-	const char *algo = crypto_tfm_alg_driver_name(crypto_rng_tfm(tfm));
-	int err = 0, i, j, seedsize;
-	u8 *seed;
-	char result[32];
-
-	seedsize = crypto_rng_seedsize(tfm);
-
-	seed = kmalloc(seedsize, GFP_KERNEL);
-	if (!seed) {
-		printk(KERN_ERR "alg: cprng: Failed to allocate seed space "
-		       "for %s\n", algo);
-		return -ENOMEM;
-	}
-
-	for (i = 0; i < tcount; i++) {
-		memset(result, 0, 32);
-
-		memcpy(seed, template[i].v, template[i].vlen);
-		memcpy(seed + template[i].vlen, template[i].key,
-		       template[i].klen);
-		memcpy(seed + template[i].vlen + template[i].klen,
-		       template[i].dt, template[i].dtlen);
-
-		err = crypto_rng_reset(tfm, seed, seedsize);
-		if (err) {
-			printk(KERN_ERR "alg: cprng: Failed to reset rng "
-			       "for %s\n", algo);
-			goto out;
-		}
-
-		for (j = 0; j < template[i].loops; j++) {
-			err = crypto_rng_get_bytes(tfm, result,
-						   template[i].rlen);
-			if (err < 0) {
-				printk(KERN_ERR "alg: cprng: Failed to obtain "
-				       "the correct amount of random data for "
-				       "%s (requested %d)\n", algo,
-				       template[i].rlen);
-				goto out;
-			}
-		}
-
-		err = memcmp(result, template[i].result,
-			     template[i].rlen);
-		if (err) {
-			printk(KERN_ERR "alg: cprng: Test %d failed for %s\n",
-			       i, algo);
-			hexdump(result, template[i].rlen);
-			err = -EINVAL;
-			goto out;
-		}
-	}
-
-out:
-	kfree(seed);
-	return err;
-}
-
 static int alg_test_cipher(const struct alg_test_desc *desc,
 			   const char *driver, u32 type, u32 mask)
 {
···
 	crypto_free_acomp(acomp);
 	return err;
 }
-
-static int alg_test_cprng(const struct alg_test_desc *desc, const char *driver,
-			  u32 type, u32 mask)
-{
-	struct crypto_rng *rng;
-	int err;
-
-	rng = crypto_alloc_rng(driver, type, mask);
-	if (IS_ERR(rng)) {
-		if (PTR_ERR(rng) == -ENOENT)
-			return 0;
-		printk(KERN_ERR "alg: cprng: Failed to load transform for %s: "
-		       "%ld\n", driver, PTR_ERR(rng));
-		return PTR_ERR(rng);
-	}
-
-	err = test_cprng(rng, desc->suite.cprng.vecs, desc->suite.cprng.count);
-
-	crypto_free_rng(rng);
-
-	return err;
-}
-
 
 static int drbg_cavs_test(const struct drbg_testvec *test, int pr,
 			  const char *driver, u32 type, u32 mask)
···
 		.test = alg_test_aead,
 		.suite = {
 			.aead = __VECS(aegis128_tv_template)
-		}
-	}, {
-		.alg = "ansi_cprng",
-		.test = alg_test_cprng,
-		.suite = {
-			.cprng = __VECS(ansi_cprng_aes_tv_template)
 		}
 	}, {
 		.alg = "authenc(hmac(md5),ecb(cipher_null))",

crypto/testmgr.h

···
 	int crypt_error;
 };
 
-struct cprng_testvec {
-	const char *key;
-	const char *dt;
-	const char *v;
-	const char *result;
-	unsigned char klen;
-	unsigned short dtlen;
-	unsigned short vlen;
-	unsigned short rlen;
-	unsigned short loops;
-};
-
 struct drbg_testvec {
 	const unsigned char *entropy;
 	size_t entropylen;
···
 			  "\xf5\x57\x0f\x2f\x49\x0e\x11\x3b"
 			  "\x78\x93\xec\xfc\xf4\xff\xe1\x2d",
 		.clen	= 24,
-	},
-};
-
-/*
- * ANSI X9.31 Continuous Pseudo-Random Number Generator (AES mode)
- * test vectors, taken from Appendix B.2.9 and B.2.10:
- *     http://csrc.nist.gov/groups/STM/cavp/documents/rng/RNGVS.pdf
- * Only AES-128 is supported at this time.
- */
-static const struct cprng_testvec ansi_cprng_aes_tv_template[] = {
-	{
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xf9",
-		.dtlen	= 16,
-		.v	= "\x80\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x59\x53\x1e\xd1\x3b\xb0\xc0\x55"
-			  "\x84\x79\x66\x85\xc1\x2f\x76\x41",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfa",
-		.dtlen	= 16,
-		.v	= "\xc0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x7c\x22\x2c\xf4\xca\x8f\xa2\x4c"
-			  "\x1c\x9c\xb6\x41\xa9\xf3\x22\x0d",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfb",
-		.dtlen	= 16,
-		.v	= "\xe0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x8a\xaa\x00\x39\x66\x67\x5b\xe5"
-			  "\x29\x14\x28\x81\xa9\x4d\x4e\xc7",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfc",
-		.dtlen	= 16,
-		.v	= "\xf0\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x88\xdd\xa4\x56\x30\x24\x23\xe5"
-			  "\xf6\x9d\xa5\x7e\x7b\x95\xc7\x3a",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {
-		.key	= "\xf3\xb1\x66\x6d\x13\x60\x72\x42"
-			  "\xed\x06\x1c\xab\xb8\xd4\x62\x02",
-		.klen	= 16,
-		.dt	= "\xe6\xb3\xbe\x78\x2a\x23\xfa\x62"
-			  "\xd7\x1d\x4a\xfb\xb0\xe9\x22\xfd",
-		.dtlen	= 16,
-		.v	= "\xf8\x00\x00\x00\x00\x00\x00\x00"
-			  "\x00\x00\x00\x00\x00\x00\x00\x00",
-		.vlen	= 16,
-		.result	= "\x05\x25\x92\x46\x61\x79\xd2\xcb"
-			  "\x78\xc4\x0b\x14\x0a\x5a\x9a\xc8",
-		.rlen	= 16,
-		.loops	= 1,
-	}, {	/* Monte Carlo Test */
-		.key	= "\x9f\x5b\x51\x20\x0b\xf3\x34\xb5"
-			  "\xd8\x2b\xe8\xc3\x72\x55\xc8\x48",
-		.klen	= 16,
-		.dt	= "\x63\x76\xbb\xe5\x29\x02\xba\x3b"
-			  "\x67\xc9\x25\xfa\x70\x1f\x11\xac",
-		.dtlen	= 16,
-		.v	= "\x57\x2c\x8e\x76\x87\x26\x47\x97"
-			  "\x7e\x74\xfb\xdd\xc4\x95\x01\xd1",
-		.vlen	= 16,
-		.result	= "\x48\xe9\xbd\x0d\x06\xee\x18\xfb"
-			  "\xe4\x57\x90\xd5\xc3\xfc\x9b\x73",
-		.rlen	= 16,
-		.loops	= 10000,
 	},
 };
 

include/crypto/rng.h

···
  *
  * The reset function completely re-initializes the random number generator
  * referenced by the cipher handle by clearing the current state. The new state
- * is initialized with the caller provided seed or automatically, depending
- * on the random number generator type (the ANSI X9.31 RNG requires
- * caller-provided seed, the SP800-90A DRBGs perform an automatic seeding).
- * The seed is provided as a parameter to this function call. The provided seed
- * should have the length of the seed size defined for the random number
- * generator as defined by crypto_rng_seedsize.
+ * is initialized with the caller provided seed or automatically, depending on
+ * the random number generator type. (The SP800-90A DRBGs perform an automatic
+ * seeding.) The seed is provided as a parameter to this function call. The
+ * provided seed should have the length of the seed size defined for the random
+ * number generator as defined by crypto_rng_seedsize.
  *
  * Return: 0 if the setting of the key was successful; < 0 if an error occurred
  */