It looks like this library, when signing, will find the first Signature and compute the Digest/Signature values for that. Is it possible to use this library also when you want to sign both the Message and the Assertions in a SAML response document - thus you would have two Signature blocks in the xml documents to sign both the whole document and then also the assertions.
Example of such a document with two Signature tags can be seen here: https://developers.onelogin.com/saml/examples/response#:~:text=A%20SAML%20Response%20is%20sent,NameID%20%2F%20attributes%20of%20the%20user.&text=A%20signed%20SAML%20Response%20with%20an%20encrypted%20Assertion,with%20an%20encrypted%20signed%20Assertion
It looks like this library, when signing, will find the first Signature and compute the Digest/Signature values for that. Is it possible to use this library also when you want to sign both the Message and the Assertions in a SAML response document - thus you would have two Signature blocks in the xml documents to sign both the whole document and then also the assertions.
Example of such a document with two Signature tags can be seen here: https://developers.onelogin.com/saml/examples/response#:~:text=A%20SAML%20Response%20is%20sent,NameID%20%2F%20attributes%20of%20the%20user.&text=A%20signed%20SAML%20Response%20with%20an%20encrypted%20Assertion,with%20an%20encrypted%20signed%20Assertion