Neil Horman 902568bbd9 Remove need for BN_BLINDING lock ... Issue https://github.com/openssl/project/issues/1245 has identified that we encounter a significant amount of time waiting to acquire the BN_BLINDING_lock when running our handshake perf test with 10 threads using an rsa key. Specifically, with 10 threads we spend about 19327731 usecs just waiting. So it would be great if we could eliminate the need to get the write lock here. Currently, the need for the lock is based off the fact that each rsa key has only a single blinding pointer, for which exclusive access is needed, with an attempt to use a fallback mt_blinding pointer in the shared case. If a key is shared by many threads, then we find ourselves needing to maniuplate this lock quite frequently if we are doing lots of ssl connections. To address this, I've come up with this approach. It replaces the blinding pointer with a pointer to a sparse array. The sparse array is then indexed by thread id. This allows us to do two things: When getting the blinding, we only need to take the read lock in the common case when looking up this threads blinding structure. Only in the first lookup for any thread do we need to take the write side lock when updating the table, and only then for a very brief critical section (i.e. we don't need to hold the lock when allocating/setting the blinding up via RSA_setup_blinding This trades off some extra memory usage for the above significant reduction in execution time. it also allows us to simplify the blinding code quite a bit by eliminating the need to handle shared blindings because blindings are never shared anymore Fixes openssl/project#1245 Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/27913)		2025-07-02 12:21:35 -04:00
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build.info	Remove RSA SSLv23 padding mode	2021-03-01 10:56:12 +01:00
rsa_acvp_test_params.c	Update copyright year	2021-04-08 13:04:41 +01:00
rsa_ameth.c	libapps + libcrypto: Silence warnings on Win64 builds	2025-07-02 17:26:26 +02:00
rsa_asn1.c	Update copyright year	2021-04-08 13:04:41 +01:00
rsa_backend.c	RSA decoder should check also sanity of p, q, e, d ... with respect to n	2024-08-28 16:50:46 +02:00
rsa_chk.c	Copyright year updates	2023-09-07 09:59:15 +01:00
rsa_crpt.c	Remove need for BN_BLINDING lock	2025-07-02 12:21:35 -04:00
rsa_depr.c	Update copyright year	2020-04-23 13:55:52 +01:00
rsa_err.c	crypto: updates to pass size_t to RAND_bytes_ex()	2021-06-01 18:13:56 +10:00
rsa_gen.c	Copyright year updates	2025-03-12 13:35:59 +00:00
rsa_lib.c	Remove need for BN_BLINDING lock	2025-07-02 12:21:35 -04:00
rsa_local.h	Remove need for BN_BLINDING lock	2025-07-02 12:21:35 -04:00
rsa_meth.c	Stop raising ERR_R_MALLOC_FAILURE in most places	2022-10-05 14:02:03 +02:00
rsa_mp.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_mp_names.c	rsa: add ossl_ prefix to internal rsa_ calls.	2020-10-07 09:04:51 +10:00
rsa_none.c	Convert all {NAME}err() in crypto/ to their corresponding ERR_raise() call	2020-11-13 09:35:02 +01:00
rsa_oaep.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_ossl.c	Remove need for BN_BLINDING lock	2025-07-02 12:21:35 -04:00
rsa_pk1.c	Copyright year updates	2023-09-07 09:59:15 +01:00
rsa_pmeth.c	libapps + libcrypto: Silence warnings on Win64 builds	2025-07-02 17:26:26 +02:00
rsa_prn.c	Update copyright year	2021-07-29 15:41:35 +01:00
rsa_pss.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_saos.c	Stop raising ERR_R_MALLOC_FAILURE in most places	2022-10-05 14:02:03 +02:00
rsa_schemes.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_sign.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_sp800_56b_check.c	Copyright year updates	2024-04-09 13:43:26 +02:00
rsa_sp800_56b_gen.c	zeroize rsa->p,rsa->q on error	2024-05-14 15:55:41 +02:00
rsa_x931.c	Copyright year updates	2024-09-05 09:35:49 +02:00
rsa_x931g.c	Copyright year updates	2023-09-07 09:59:15 +01:00