signxml

signxml is a Python library that implements the W3C XML Signature standard (XMLDSig), used for payload security in standards like SAML 2.0, XAdES, EBICS, and WS-Security. It provides features for signing and verifying XML documents, including support for X.509 certificate chains and XAdES signatures. The library is actively maintained with regular releases, supporting modern Python versions (3.9-3.13+).