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| author | Pauli <ppzgs1@gmail.com> | 2024-06-27 10:08:05 +1000 |
|---|---|---|
| committer | Pauli <ppzgs1@gmail.com> | 2024-06-29 14:13:12 +1000 |
| commit | 5258715faf9c5f2ecd18a278d70c2b812592c5ae (patch) | |
| tree | 3434e7b16b4445224aba7f22d9144d67eafbee04 | |
| parent | 89f27ae1f3eaec16e8617afa202d893debba3543 (diff) | |
Clarify DRBG seeding.
There is a legacy code path that OpenSSL won't use anymore but applications
could. Add a comment indicating this to avoid confusion for people not
intimately conversant with the nuances in the RNG code.
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24745)
(cherry picked from commit 1eb122aa0ca152dc564e61674caf3f11acd85b57)
| -rw-r--r-- | providers/implementations/rands/drbg.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/providers/implementations/rands/drbg.c b/providers/implementations/rands/drbg.c index 41ff2a8e33..9ab18af900 100644 --- a/providers/implementations/rands/drbg.c +++ b/providers/implementations/rands/drbg.c @@ -203,6 +203,11 @@ static size_t get_entropy(PROV_DRBG *drbg, unsigned char **pout, int entropy, return ossl_crngt_get_entropy(drbg, pout, entropy, min_len, max_len, prediction_resistance); #else + /* + * In normal use (i.e. OpenSSL's own uses), this is never called. + * Outside of the FIPS provider, OpenSSL sets its DRBGs up so that + * they always have a parent. This remains purely for legacy reasons. + */ return ossl_prov_get_entropy(drbg->provctx, pout, entropy, min_len, max_len); #endif |