Imports github.com/beevik/etree github.com/invopop/gobl/uuid software.sslmate.com/src/go-pkcs12 Standard library imports bytes crypto crypto/rand crypto/rsa crypto/sha512 crypto/tls crypto/x509 crypto/x509/pkix encoding/asn1 encoding/base64 encoding/hex encoding/pem encoding/xml errors fmt io net/http os sort strings time