GPG encryption and decryption and signature

In Ruan one peak great God's blog (http://www.ruanyifeng.com/blog/2013/07/gpg.html) goes to school gpg. Here after the practice of the record, in fact, mainly changed the layout, convenient for personal use.

The key file is saved under ~/.gunpg/

Encryption: (Requires the system to have each other's public key)

GPG--recipient [user ID]--output sec.txt--encrypt source.txt

Decryption: (determines that the encrypted file is encrypted with its own public key)

GPG Sec.txt

Signature:

Signature only not encrypted:

Signature Instructions	The resulting signature file	Notes	Validation Directives
GPG--sign Source.txt	Source.txt.gpg	Binary form storage, including file content;	GPG--verify SOURCE.TXT.GPG
GPG--clearsign Source.txt	Source.txt.asc	Text Form Storage;	GPG--verify SOURCE.TXT.ASC
GPG--detach-sign Source.txt	Source.txt.sig	binary form storage; does not contain the content of the file; if the filename is not standard, it should be specified;	GPG--verify Source.txt.sig
GPG--armor--detach-sign Source.txt	Source.txt.asc	Text storage, no file content, if the file name is not standard when verifying;	GPG--verify SOURCE.TXT.ASC

Signature and encryption: (Decrypt the file when it is received and then obtain the decryption file and verify the signature)

GPG--local-user [Sender ID]--recipient [recipient ID]--armor--sign--encrypt source.txt

Verify:

GPG--verify SOURCE.TXT.ASC Source.txt

Lists the system's existing keys

GPG--list-keys

Delete a key

GPG--delete-key [user ID]

Find someone else's public key on a public key server (no guarantee that the public key is reliable and need to be validated by another mechanism after downloading)

GPG--keyserver hkp://subkeys.pgp.net--search-keys [user ID]

Import Key

GPG--import [key file]

Export a public/private key and display it in ASCII

GPG--armor--output public-key.txt--export [user ID] gpg--armor--output private-key.txt