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Encrypt with a symmetric cipher using a passphrase.

The default symmetric cipher used is CAST5, but may be chosen with the --cipher-algo option.

Alternatively, you can save your images to two cards simultaneously and thus have an immediate backup of all the images you capture.

This option may be combined with --sign (for a signed and symmetrically encrypted message), --encrypt (for a message that may be decrypted via a secret key or a passphrase), or --sign and --encrypt together (for a signed message that may be decrypted via a secret key or a passphrase).

Decrypt file (or stdin if no file is specified) and write it to stdout (or the file specified with --output).

Open PGP software is only needed to verify the signature.

Clear text signatures may modify end-of-line whitespace for platform independence and are not intended to be reversible. This option may be combined with --sign (for a signed and encrypted message), --symmetric (for a message that may be decrypted via a secret key or a passphrase), or --sign and --symmetric together (for a signed message that may be decrypted via a secret key or a passphrase).

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