Set .fips_allowed in the following drbg alg_test_desc structs.
drbg_nopr_hmac_sha384
drbg_nopr_sha384
drbg_pr_hmac_sha384
drbg_pr_sha384
The sha384 and hmac_sha384 DRBGs with and without prediction resistance
were disallowed in an early version of the FIPS 140-3 Implementation
Guidance document. Hence, the fips_allowed flag in struct alg_test_desc
pertaining to the affected DRBGs was unset. The IG has been withdrawn
and they are allowed again.
Furthermore, when the DRBGs are configured, /proc/crypto shows that
drbg_*pr_sha384 and drbg_*pr_hmac_sha384 are fips-approved ("fips: yes")
but because their self-tests are not run (a consequence of unsetting
the fips_allowed flag), the drbgs won't load successfully with the seeming
contradictory "fips: yes" in /proc/crypto.
This series contains a single patch that sets the fips_allowed flag in
the sha384-impacted DRBGs, which restores the ability to load them in
FIPS mode.
Link: https://lore.kernel.org/linux-crypto/979f4f6f-bb74-4b93-8cbf-6ed653604f0e@xxxxxxxxx/
Link: https://csrc.nist.gov/CSRC/media/Projects/cryptographic-module-validation-program/documents/fips%20140-3/FIPS%20140-3%20IG.pdf
To: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
To: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Jeff Barnes <jeffbarnes@xxxxxxxxxxxxxxxxxxx>
---
crypto/testmgr.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 2f5f6b52b2d4..815d1f31dbac 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4897,6 +4897,7 @@ static const struct alg_test_desc alg_test_descs[] = {
*/
.alg = "drbg_nopr_hmac_sha384",
.test = alg_test_null,
+ .fips_allowed = 1
}, {
.alg = "drbg_nopr_hmac_sha512",
.test = alg_test_drbg,
@@ -4915,6 +4916,7 @@ static const struct alg_test_desc alg_test_descs[] = {
/* covered by drbg_nopr_sha256 test */
.alg = "drbg_nopr_sha384",
.test = alg_test_null,
+ .fips_allowed = 1
}, {
.alg = "drbg_nopr_sha512",
.fips_allowed = 1,
@@ -4946,6 +4948,7 @@ static const struct alg_test_desc alg_test_descs[] = {
/* covered by drbg_pr_hmac_sha256 test */
.alg = "drbg_pr_hmac_sha384",
.test = alg_test_null,
+ .fips_allowed = 1
}, {
.alg = "drbg_pr_hmac_sha512",
.test = alg_test_null,
@@ -4961,6 +4964,7 @@ static const struct alg_test_desc alg_test_descs[] = {
/* covered by drbg_pr_sha256 test */
.alg = "drbg_pr_sha384",
.test = alg_test_null,
+ .fips_allowed = 1
}, {
.alg = "drbg_pr_sha512",
.fips_allowed = 1,
--
2.34.1
