[openssl/openssl] 96b16b: ppc64le: Optimized MLDSA NTT, supports p8 and abov...

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 96b16b9a611fdd4f75b86acb837a09eb7a17fc90
      https://github.com/openssl/openssl/commit/96b16b9a611fdd4f75b86acb837a09eb7a17fc90
  Author: Danny Tsen <[email protected]>
  Date:   2026-08-27 (Thu, 27 Aug 2026)

  Changed paths:
    A crypto/ml_dsa/asm/mldsa_intt_ppc64le.S
    A crypto/ml_dsa/asm/mldsa_ntt_ppc64le.S
    A crypto/ml_dsa/asm/mldsa_ppc_macros_asm.inc
    M crypto/ml_dsa/build.info
    M crypto/ml_dsa/ml_dsa_ntt.c
    M crypto/ml_dsa/ml_dsa_poly.h

  Log Message:
  -----------
  ppc64le: Optimized MLDSA NTT, supports p8 and above architectures.

1. rebased.
2. fixed tab.

Optimized MLDSA NTT implementation for ppc64le (p8+).

Supporting files include,
ppc64/mldsa_ntt_ppc_4x.S: supports ossl_ml_dsa_poly_ntt.
ppc64/mldsa_intt_ppc_4x.S: supports ossl_ml_dsa_poly_ntt_inverse.
ppc64/mldsa_poly_ntt_mul.S: supports ossl_poly_ntt_mult.
ppc64/mldsa_poly_add.S: supports poly_add and poly_sub.

Modified build.info to support ppc64le assembly implementation.
Added new definitions of MLDSA_NTT_ASM and MLDSA_POLY_ADD_ASM for
NTT, inverse NTT and poly_add and poly_sub for optimized assembly
implementation.

This is the initial archtecture specific implementation so can be mdified
to adapt to a new build structures.

Baseline speed test:

                       keygen     signs    verify keygens/s    sign/s  verify/s
          ML-DSA-44 0.000141s 0.000932s 0.000171s    7115.2    1073.3    5860.9
          ML-DSA-65 0.000238s 0.001471s 0.000255s    4207.2     679.6    3920.2
          ML-DSA-87 0.000340s 0.001719s 0.000387s    2939.4     581.8    2584.8

Optimized:
          ML-DSA-44 0.000072s 0.000253s 0.000060s   13866.8    3954.7   16735.7
          ML-DSA-65 0.000138s 0.000400s 0.000095s    7253.2    2500.2   10532.4
          ML-DSA-87 0.000187s 0.000485s 0.000159s    5338.5    2061.4    6269.8

The optimized code runs around 3.6 times faster than the original C implementation.

Signed-off-by: Danny Tsen <[email protected]>
Reviewed-by: Shane Lontis <[email protected]>
Reviewed-by: Tomas Mraz <[email protected]>
Merge-date: Thu Aug 27 16:26:36 2026
Merged-from: https://github.com/openssl/openssl/pull/29611



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