gpg
SafeEncrypt files / verify signatures
gpg -c <file>
Symmetric file encryption (-c) and signature verification (--verify) — secure handoffs and authentic downloads.
Examples
gpg --verify app.tar.gz.sig app.tar.gzVerify a release signature
Syntax
gpg -c <file>(暗号化) / gpg <file.gpg>(復号) / gpg --verify
Before you run it
Lost passphrases mean lost data.
The same reference, with no signal at all
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