On Mon, 30 Oct 2023 at 12:23, Stephan Mueller <smueller@xxxxxxxxxx> wrote: > > Am Sonntag, 29. Oktober 2023, 21:48:21 CET schrieb Dimitri John Ledkov: > > Hi Dimitri, > > > When originally drbg was introduced FIPS self-checks for all types but > > CTR were using the most preferred parameters for each type of > > DRBG. Update CTR self-check to use aes256. > > > > Fixes: 541af946fe ("crypto: drbg - SP800-90A Deterministic Random Bit > > Generator") Signed-off-by: Dimitri John Ledkov > > <dimitri.ledkov@xxxxxxxxxxxxx> > > > > > --- > > crypto/drbg.c | 6 +++--- > > 1 file changed, 3 insertions(+), 3 deletions(-) > > > > diff --git a/crypto/drbg.c b/crypto/drbg.c > > index 2cce18dcfc..b120e2866b 100644 > > --- a/crypto/drbg.c > > +++ b/crypto/drbg.c > > @@ -1478,8 +1478,8 @@ static int drbg_generate(struct drbg_state *drbg, > > err = alg_test("drbg_pr_hmac_sha256", > > "drbg_pr_hmac_sha256", 0, 0); > > else if (drbg->core->flags & DRBG_CTR) > > - err = alg_test("drbg_pr_ctr_aes128", > > - "drbg_pr_ctr_aes128", 0, 0); > > + err = alg_test("drbg_pr_ctr_aes256", > > + "drbg_pr_ctr_aes256", 0, 0); > > else > > err = alg_test("drbg_pr_sha256", > > "drbg_pr_sha256", 0, 0); > > @@ -2017,7 +2017,7 @@ static inline int __init drbg_healthcheck_sanity(void) > > return 0; > > > > #ifdef CONFIG_CRYPTO_DRBG_CTR > > - drbg_convert_tfm_core("drbg_nopr_ctr_aes128", &coreref, &pr); > > + drbg_convert_tfm_core("drbg_nopr_ctr_aes256", &coreref, &pr); > > #endif > > #ifdef CONFIG_CRYPTO_DRBG_HASH > > drbg_convert_tfm_core("drbg_nopr_sha256", &coreref, &pr); > > I am not sure again whether this warrants a "Fixes" tag, because the first > modification is in a commented-out code section and the latter again intends > to test the DRBG thresholds and thus just needs "a" DRBG. > Agreed, it is more of a reference. But yes, I don't believe this needs to trigger stable backports - because yes it is like dead code, or fips only code which majority kernels don't do. Maybe I should reference that commit in description only? > Anyhow: > > Reviewed-by: Stephan Mueller <smueller@xxxxxxxxxx> > > > Ciao > Stephan > > -- okurrr, Dimitri