Now signing changes and any dsc files...
 signfile snapcraft_2.20.dsc Sergio Schvezov <sergio.schvezov@ubuntu.com>

Necesita una contraseña para desbloquear la clave secreta
del usuario: "Sergio Schvezov <sergio.schvezov@ubuntu.com>"
clave RSA de 4096 bits, ID 012E7D25, creada el 2015-04-17


 signfile snapcraft_2.20_source.changes Sergio Schvezov <sergio.schvezov@ubuntu.com>

Necesita una contraseña para desbloquear la clave secreta
del usuario: "Sergio Schvezov <sergio.schvezov@ubuntu.com>"
clave RSA de 4096 bits, ID 012E7D25, creada el 2015-04-17


Successfully signed dsc and changes files

|-- sergiusens@lindon:~/projects/snapcraft (master) --|
$ vim debian/changelog 

|-- sergiusens@lindon:~/projects/snapcraft (master) --|
$ dput ../snapcraft_2.20_source.changes 
Trying to upload package to ubuntu
Checking signature on .changes
gpg: Firmado el jue 27 oct 2016 12:24:55 ART usando clave RSA ID 012E7D25
gpg: Firma correcta de «Sergio Schvezov <sergio.schvezov@ubuntu.com>»
gpg:                 alias «Sergio Schvezov <sergiusens@gmail.com>»
gpg:                 alias «Sergio Schvezov <sergio.schvezov@canonical.com>»
gpg:                 alias «[jpeg image of size 4095]»
Good signature on ../snapcraft_2.20_source.changes.
Checking signature on .dsc
gpg: Firmado el jue 27 oct 2016 12:24:50 ART usando clave RSA ID 012E7D25
gpg: Firma correcta de «Sergio Schvezov <sergio.schvezov@ubuntu.com>»
gpg:                 alias «Sergio Schvezov <sergiusens@gmail.com>»
gpg:                 alias «Sergio Schvezov <sergio.schvezov@canonical.com>»
gpg:                 alias «[jpeg image of size 4095]»
Good signature on ../snapcraft_2.20.dsc.
Uploading to ubuntu (via ftp to upload.ubuntu.com):
  Uploading snapcraft_2.20.dsc: done.
  Uploading snapcraft_2.20.tar.xz: done.    
  Uploading snapcraft_2.20_source.changes: done.
Successfully uploaded packages.