Is GPG encryption the same as PGP?
Gnu Privacy Guard and Pretty Good Privacy — also referred to as GPG and PGP, respectively — are data encryption and decryption solutions used for transferring and storing information securely. GPG and PGP are nearly identical, with the major difference between them being how they are licensed to the public.
What is a PGP secret sub key?
A Secret-Key packet contains all the information that is found in a Public-Key packet, including the public-key material, but also includes the secret-key material after all the public-key fields.
How many subkeys are in a GPG keypair?
By default GPG creates one signing subkey (your identity) and one encryption subkey (how you receive messages intended for you). Use GPG to add an additional signing subkey to your keypair. This new subkey is linked to the first signing key. Now we have three subkeys.
How is a subkey calculated in a PGP signature?
This signature is calculated directly on the primary key and subkey, and not on any User ID or other packets. A signature that binds a signing subkey MUST have an Embedded Signature subpacket in this binding signature that contains a 0x19 signature made by the signing subkey on the primary key and subkey.
What happens if I Lose my GPG key?
Subkeys can’t prevent a thief from decrypting messages intended for your private key. But they canhelp mitigate the damage to your identity should your key be lost or stolen. The concept behind this technique is as follows: Create a regular GPG keypair.
How are subkey packets defined in OpenPGP 5.5?
Subkey packets are defined in RFC 4880, OpenPGP, 5.5 Key Material Packet. They’re only distinguished by another packet ID, and require a binding signature to be actually useful (see below). A Public-Subkey packet (tag 14) has exactly the same format as a Public-Key packet, but denotes a subkey.