[openssl/openssl] 244862: Vectorize (inverse) NTT in ML-DSA

"'TimoKellerIBM' via openssl-commits" <[email protected]>
Newsgroups gmane.comp.encryption.openssl.cvs
Message-ID <openssl/openssl/push/refs/heads/master/[email protected]>
  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 24486294f7e8ec69318c3608edb191d7377735f1
      https://github.com/openssl/openssl/commit/24486294f7e8ec69318c3608edb191d7377735f1
  Author: Timo Keller <[email protected]>
  Date:   2026-06-10 (Wed, 10 Jun 2026)

  Changed paths:
    M CHANGES.md
    M crypto/ml_dsa/build.info
    M crypto/ml_dsa/ml_dsa_local.h
    M crypto/ml_dsa/ml_dsa_ntt.c
    A crypto/ml_dsa/ml_dsa_ntt_vec128.c
    M crypto/ml_dsa/ml_dsa_poly.h
    M crypto/ml_dsa/ml_dsa_sign.c
    M include/arch/s390x_arch.h
    M include/internal/common.h

  Log Message:
  -----------
  Vectorize (inverse) NTT in ML-DSA

The vectorization is implemented using vector extensions (of gcc/clang)
and will work on any architecture with 128 bit vector registers that has
the builtin `vec_mulh` for the high part of a multiplication.

Enable this for s390x.

The speed-up factor on z17 is around 2--3.4.

Signed-off-by: Timo Keller <[email protected]>

Reviewed-by: Shane Lontis <[email protected]>
Reviewed-by: Saša Nedvědický <[email protected]>
MergeDate: Wed Jun 10 09:25:58 2026
(Merged from https://github.com/openssl/openssl/pull/30812)



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