Set userid to key id when user id is null
Set userid to key id when user id is null

iwayvietnam/openpgp-secure-zimlet,iwayvietnam/openpgp-secure-zimlet,nguyennv/openpgp-zimlet,nguyennv/openpgp-secure-zimlet,nguyennv/openpgp-zimlet,nguyennv/openpgp-zimlet,nguyennv/openpgp-secure-zimlet,iwayvietnam/openpgp-secure-zimlet,nguyennv/openpgp-secure-zimlet