[openssl/openssl] ac0b54: Improved detection of engine-provided private "cla...

[Dmitry Belyavskiy]

  Branch: refs/heads/openssl-3.1
  Home:   https://github.com/openssl/openssl
  Commit: ac0b54876d446be273816fd19b37939989fb603f
      https://github.com/openssl/openssl/commit/ac0b54876d446be273816fd19b37939989fb603f
  Author: Dmitry Belyavskiy <beldmit at gmail.com>
  Date:   2023-10-04 (Wed, 04 Oct 2023)

  Changed paths:
    M crypto/engine/eng_pkey.c

  Log Message:
  -----------
  Improved detection of engine-provided private "classic" keys

Resolves #17092 (?)
Resolves #17286 (?)

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19965)

(cherry picked from commit 2b74e75331a27fc89cad9c8ea6a26c70019300b5)