[PATCH v4 0/8] cryptodev: add RSA-OAEP and RSA-PSS padding support

[Sucharitha Sarananaga <ssarananaga@marvell.com>]

The asymmetric crypto capability structure currently reports only a
generic modulus length and primary hash algorithm for RSA, with no
way for a PMD to advertise which padding schemes (NONE, PKCS#1 v1.5,
OAEP, PSS) or MGF1 hash algorithms it supports. Applications have no
standard way to discover this, and the OpenSSL PMD itself only
implements NONE and PKCS#1 v1.5 padding.

This series first extends the capability API with a dedicated
rte_crypto_rsa_capa (modulus length, pad_types, mgf1_hash_algos, and
an explicit-PSS-salt flag), then updates the capability reporting in
the octeontx, cnxk, and openssl PMDs to use it.

On top of that, it adds actual RSA-OAEP and RSA-PSS support to the
OpenSSL PMD:
 - RSA-OAEP encrypt/decrypt, with configurable OAEP hash, MGF1 hash,
   and an optional label, defaulting MGF1 to the OAEP hash when
   unset.
 - RSA-PSS sign/verify, with configurable hash, MGF1 hash, and salt
   length (rte_crypto_rsa_padding::pss_saltlen), using a dedicated
   EVP_PKEY_verify()-based verification path since PSS does not
   support verify-recover. The PSS salt itself is always generated
   internally by the PMD; an application-supplied salt
   (rte_crypto_rsa_op_param::pss_salt, gated by the new
   pss_explicit_salt capability bit) is introduced by this series
   for future PMD support but is not yet implemented here, so it is
   rejected with RTE_CRYPTO_OP_STATUS_INVALID_ARGS.

Test coverage for both OAEP (encrypt/decrypt, default and custom
MGF1, with and without a label) and PSS (digest-length, maximum, and
zero-length salt) is added to the cryptodev asymmetric test suite.

v2:
 - Dropped the virtio and qat capability-advertisement patches from
   this series; they will be sent separately.
 - Documented the new rsa_capa/pss_salt fields in release_26_11.rst
   (this series' target release) instead of the already-released
   26.07 notes.

v3:
 - Renamed rsa_oaep_supported()/rsa_pss_supported() test helpers to
   is_rsa_oaep_supported()/is_rsa_pss_supported() and switched them
   to bool.
 - Minor OpenSSL PMD cleanups: hoisted the mgf1 variable declaration
   and used memcpy() instead of rte_memcpy() for the OAEP label.
 - Reworded a few patch subjects for consistency (app/test ->
   test/crypto; shortened the OAEP/PSS OpenSSL commit titles).

v4:
 - Fixed a build error in the test suite by making rsa_pss_digest_sha256
   a const struct.

Sucharitha Sarananaga (8):
  crypto: add RSA-specific capability parameters
  crypto/octeontx: advertise RSA PKCS#1 v1.5 padding support
  crypto/cnxk: advertise RSA PKCS#1 v1.5 padding support
  crypto/openssl: advertise RSA padding and hash capabilities
  crypto/openssl: support RSA-OAEP
  test/crypto: add RSA OAEP asymmetric test cases
  crypto/openssl: support RSA-PSS
  test/crypto: add RSA-PSS sign and verify test cases

 app/test/test_cryptodev_asym.c                | 663 ++++++++++++++++++
 app/test/test_cryptodev_rsa_test_vectors.h    | 317 +++++++++
 doc/guides/rel_notes/release_26_11.rst        |  16 +
 .../crypto/cnxk/cnxk_cryptodev_capabilities.c |   8 +-
 .../octeontx/otx_cryptodev_capabilities.c     |   8 +-
 drivers/crypto/openssl/openssl_pmd_private.h  |  10 +
 drivers/crypto/openssl/rte_openssl_pmd.c      | 367 ++++++++--
 drivers/crypto/openssl/rte_openssl_pmd_ops.c  | 140 +++-
 lib/cryptodev/rte_crypto_asym.h               |  18 +
 lib/cryptodev/rte_cryptodev.h                 |  50 +-
 10 files changed, 1535 insertions(+), 62 deletions(-)

-- 
2.54.0