"The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192"
6809
How do I fix the GPG error "NO_PUBKEY"?
112879
W: The repository 'http://download.fpcomplete.com/ubuntu yakkety Release' is not signed
45169
SSH connection problem with "Host key verification failed..." error
142962
How to sign string with private key
7045
Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?
43639
What's wrong with this digital signature scheme?
102208
Why do I get "Permission denied (publickey)" when trying to SSH from local Ubuntu to a Amazon EC2 server?
13231
What could be the reason, that private keys are not unlocked?
6289
SSH Permission denied (publickey)
112568
Cannot remove a repository that complains it has no public key
17596
Invalid signature for Kali Linux repositories : "The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository"
44212
Why does SSL handshake give 'Could not generate DH keypair' exception?
36104
"Software can't be installed or removed because the authentication service is not available. "
1200
GPG can't check signature
80899
"no public key available" on apt-get update
117719
Problem with certificates
133271
How do I verify a PGP signature?