@staticmethod<EOL><INDENT>def sign_metadata(metadata, key, cert, sign_algorithm=OneLogin_Saml2_Constants.RSA_SHA1, digest_algorithm=OneLogin_Saml2_Constants.SHA1):<DEDENT>
return OneLogin_Saml2_Utils.add_sign(metadata, key, cert, False, sign_algorithm, digest_algorithm)<EOL>
Signs the metadata with the key/cert provided

:param metadata: SAML Metadata XML
:type metadata: string

:param key: x509 key
:type key: string

:param cert: x509 cert
:type cert: string

:returns: Signed Metadata
:rtype: string

:param sign_algorithm: Signature algorithm method
:type sign_algorithm: string

:param digest_algorithm: Digest algorithm method
:type digest_algorithm: string