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| author | Nicolai Stange <nstange@suse.de> | 2021-11-30 15:10:08 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-12-11 16:48:06 +1100 |
| commit | b454fb702515276041b701a4eda468b6cd6b384d (patch) | |
| tree | 7344058307c647b726e1ee03a34ec79bf6e6344c /crypto | |
| parent | 8f7977284331d0b0f210efa98a5d3fdcb2a65dd3 (diff) | |
| download | linux-b454fb702515276041b701a4eda468b6cd6b384d.tar.gz linux-b454fb702515276041b701a4eda468b6cd6b384d.tar.bz2 linux-b454fb702515276041b701a4eda468b6cd6b384d.zip | |
crypto: jitter - don't limit ->health_failure check to FIPS mode
The jitterentropy's Repetition Count Test (RCT) as well as the Adaptive
Proportion Test (APT) are run unconditionally on any collected samples.
However, their result, i.e. ->health_failure, will only get checked if
fips_enabled is set, c.f. the jent_health_failure() wrapper.
I would argue that a RCT or APT failure indicates that something's
seriously off and that this should always be reported as an error,
independently of whether FIPS mode is enabled or not: it should be up to
callers whether or not and how to handle jitterentropy failures.
Make jent_health_failure() to unconditionally return ->health_failure,
independent of whether fips_enabled is set.
Note that fips_enabled isn't accessed from the jitterentropy code anymore
now. Remove the linux/fips.h include as well as the jent_fips_enabled()
wrapper.
Signed-off-by: Nicolai Stange <nstange@suse.de>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/jitterentropy-kcapi.c | 6 | ||||
| -rw-r--r-- | crypto/jitterentropy.c | 4 | ||||
| -rw-r--r-- | crypto/jitterentropy.h | 1 |
3 files changed, 0 insertions, 11 deletions
diff --git a/crypto/jitterentropy-kcapi.c b/crypto/jitterentropy-kcapi.c index e8a4165a1874..2d115bec15ae 100644 --- a/crypto/jitterentropy-kcapi.c +++ b/crypto/jitterentropy-kcapi.c @@ -40,7 +40,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> -#include <linux/fips.h> #include <linux/time.h> #include <crypto/internal/rng.h> @@ -60,11 +59,6 @@ void jent_zfree(void *ptr) kfree_sensitive(ptr); } -int jent_fips_enabled(void) -{ - return fips_enabled; -} - void jent_panic(char *s) { panic("%s", s); diff --git a/crypto/jitterentropy.c b/crypto/jitterentropy.c index 788d90749715..24e087c3f526 100644 --- a/crypto/jitterentropy.c +++ b/crypto/jitterentropy.c @@ -298,10 +298,6 @@ static int jent_stuck(struct rand_data *ec, __u64 current_delta) */ static int jent_health_failure(struct rand_data *ec) { - /* Test is only enabled in FIPS mode */ - if (!jent_fips_enabled()) - return 0; - return ec->health_failure; } diff --git a/crypto/jitterentropy.h b/crypto/jitterentropy.h index c83fff32d130..b7397b617ef0 100644 --- a/crypto/jitterentropy.h +++ b/crypto/jitterentropy.h @@ -2,7 +2,6 @@ extern void *jent_zalloc(unsigned int len); extern void jent_zfree(void *ptr); -extern int jent_fips_enabled(void); extern void jent_panic(char *s); extern void jent_memcpy(void *dest, const void *src, unsigned int n); extern void jent_get_nstime(__u64 *out); |