[Feature request] Signature validation failed. SAML Response rejected

[jorgsowa]

FR related to this comment: #216 (comment)

OpenSSL 3.0 blocks by default support for older algorithms. Thus, when we migrate to newer versions of PHP, some of the keys cannot be verified. It would be nice to send the correct message that the OpenSSL is the culprit and the configuration of OpenSSL should be changed. Or the keys should be updated to use stronger algorithms.

https://docs.openssl.org/3.0/man7/migration_guide/

[pitbulk]

Do you have a PR for this one?