GNOME Bugzilla – Bug 123675
xmlsec-mscrypto: PEM and DER public/private key, PEM certificate formats are not supported
Last modified: 2016-01-28 18:38:52 UTC
The only supported file formats are PKCS#8, PKCS#12 and DER certificates.
Correction from Wouter: I don't think pkcs8 is supported by MS Crypto API.
Migrated to https://github.com/lsh123/xmlsec/issues/9