Apply 21bbcb04b62352331a15a0b8463ebb27a9b858bc from upstream locally. Change-Id: Icb1ca245ebb6453040fbce6da54d13086970b0e8 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110846 Tested-by: Miklos Vajna <vmiklos@collabora.com> Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
XML signing, etc. From [http://www.aleksey.com/xmlsec/]. The certificate vertification functionality of libxmlsec is not used, both the mscng and nss backends specify the XMLSEC_KEYINFO_FLAGS_X509DATA_DONT_VERIFY_CERTS flag during verification.