boringssl/crypto/fipsmodule/ecdsa
David Benjamin b8d677bfd0 Deduplicate built-in curves and give custom curves an order_mont.
I still need to revive the original CL, but right now I'm interested in
giving every EC_GROUP an order_mont and having different ownership of
that field between built-in and custom groups is kind of a nuisance. If
I'm going to do that anyway, better to avoid computing the entire
EC_GROUP in one go.

I'm using some manual locking rather than CRYPTO_once here so that it
behaves well in the face of malloc errors. Not that we especially care,
but it was easy to do.

This speeds up our ECDH benchmark a bit which otherwise must construct the
EC_GROUP each time (matching real world usage).

Before:
Did 7619 ECDH P-224 operations in 1003190us (7594.8 ops/sec)
Did 7518 ECDH P-256 operations in 1060844us (7086.8 ops/sec)
Did 572 ECDH P-384 operations in 1055878us (541.7 ops/sec)
Did 264 ECDH P-521 operations in 1062375us (248.5 ops/sec)

After:
Did 8415 ECDH P-224 operations in 1066695us (7888.9 ops/sec)
Did 7952 ECDH P-256 operations in 1022819us (7774.6 ops/sec)
Did 572 ECDH P-384 operations in 1055817us (541.8 ops/sec)
Did 264 ECDH P-521 operations in 1060008us (249.1 ops/sec)

Bug: 20
Change-Id: I7446cd0a69a840551dcc2dfabadde8ee1e3ff3e2
Reviewed-on: https://boringssl-review.googlesource.com/23073
Reviewed-by: Adam Langley <agl@google.com>
2017-11-20 16:52:03 +00:00
..
ecdsa_sign_tests.txt
ecdsa_test.cc Add ECDSA tests for custom curves. 2017-11-17 12:18:16 +00:00
ecdsa_verify_tests.txt
ecdsa.c Deduplicate built-in curves and give custom curves an order_mont. 2017-11-20 16:52:03 +00:00