we are trying to built ubuntu core for our rock64(rk3328) board using this link
but we stuck at “1. Create a model assertion” point.
when we run this “sudo cat rk3328-model.json | snap sign -k cfkey &> rk3328.model” command we got this error
"error: cannot sign assertion: cannot sign using GPG: /usr/bin/gpg --personal-digest-preferences SHA512 --default-key 0xE61B6F42566FECC9B0AC4714AA2FB9F46E7532DA --detach-sign failed: exit status 2 (“gpg: signing failed: Timeout\ngpg: signing failed: Timeout\n”)
"
and this is our model.json file
{
“type”: “model”,
“authority-id”: “ObaRdnGUONVS5mFOjUtUDbr4tfgp3jbg”,
“brand-id”: “ObaRdnGUONVS5mFOjUtUDbr4tfgp3jbg”,
“series”: “16”,
“model”: “ROCK64”,
“architecture”: “armhf”,
“gadget”: “rk3328”,
“kernel”: “4.15.0-20-generic”,
“timestamp”: “2018-05-24T07:44:34+00:00”
}
thanks in advance
)