[openssl/openssl] 3e7bd7: doc: add detailed documentation for SSL_CERT_FLAG_...

"'Kit Dallege' 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: 3e7bd74a115e7ac569bd7e5a770d67e695eee874
      https://github.com/openssl/openssl/commit/3e7bd74a115e7ac569bd7e5a770d67e695eee874
  Author: kovan <[email protected]>
  Date:   2026-08-18 (Tue, 18 Aug 2026)

  Changed paths:
    M doc/man3/SSL_CONF_cmd.pod

  Log Message:
  -----------
  doc: add detailed documentation for SSL_CERT_FLAG_TLS_STRICT

The -strict option and StrictCertCheck configuration option were
documented only as "Enables strict mode protocol handling" without
explaining what strict mode actually does.

Add detailed documentation explaining that strict mode enforces:
- All chain certificates must use configured signature algorithms
  (no SHA1 fallback)
- CA certificate parameters are validated against supported list
- Client certificate type must match server's CertificateRequest
- Client certificate issuer must be in server's CA list

Also note that Suite B modes always imply strict mode.

Fixes #16140

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Reviewed-by: Tomas Mraz <[email protected]>
Reviewed-by: Andrew Dinh <[email protected]>
MergeDate: Tue Aug 18 15:50:34 2026
(Merged from https://github.com/openssl/openssl/pull/29841)



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