The SAML 2.0 conformance document lists a number of encryption required to claim conformation. I wasn't able to discern one way or the other whether RSA-v1.5 and RSA-OAEP are provided by lasso/libxmlsec1 or not (or even what they are). This needs further investigation.
This issue ticket was originally removed from the tracker as it clashed with the pull request. See upstream ticket for migration details.
Metadata Update from @t0xic0der: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)