Only field multiplication and squaring (but not reduction) show a
significant improvement. This is enabled on Power ISA >= 3.0.
On a Power 9 CPU an average 10% performance improvement is seen (ECHDE:
14%, ECDSA sign: 6%, ECDSA verify 10%), compared to existing code.
On an upcoming Power 10 CPU we see an average performance improvement
of 26% (ECHDE: 38%, ECDSA sign: 16%, ECDSA verify 25%), compared to
existing code.
Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15401)
Remove a TODO that is no longer relevant and
drop some more non-fips sources from the fips checksums.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/15191)
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15167)
Overall improvement for p384 of ~18% on Power 9, compared to existing
Power assembling code. See comment in code for more details.
Multiple unrolled versions could be generated for values other than
6. However, for TLS 1.3 the only other ECC algorithms that might use
Montgomery Multiplication are p256 and p521, but these have custom
algorithms that don't use Montgomery Multiplication. Non-ECC
algorithms are likely to use larger key lengths that won't fit into
the n <= 10 length limitation of this code.
Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15175)
Richard Levitte