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# GPG Crypto
## General options
* `--armor` or `-a`: ASCII armor, output is printable ASCII
* `--local-user` or `-u`: specify which ID to use
## Symmetric encryption
### Encrypt file with passphrase
gpg --symmetric <file>
Add `--armor` to make it readable-ASCII encoded.
### Decrypt
gpg --output <out-file> --decrypt <in-file>
## Export private key
gpg --armor --export-secret-keys <ID>
`--armor` makes it readable-ASCII encoded.
## Asymmetric crypto
gpg --encrypt [--sign] [-u USER] file
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