diff options
| author | Eric Biggers <ebiggers@kernel.org> | 2025-11-13 18:57:08 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2025-11-22 10:04:50 +0800 |
| commit | c7dcb041ce7d32c0becd43e8f99f993365e6bd20 (patch) | |
| tree | a73739c63eda310a0664577d059b69345369e668 /crypto/Kconfig | |
| parent | 79492d5adf456051908878816f1682144962be75 (diff) | |
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purpose, since it's been superseded by the more modern algorithms in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>
Diffstat (limited to 'crypto/Kconfig')
| -rw-r--r-- | crypto/Kconfig | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index b9afd8505b89..a7997759cbd6 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -25,7 +25,7 @@ menu "Crypto core or helper" 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 @@ -1169,17 +1169,6 @@ 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)" help |