## How to Decrypt Data

Some of the DARTS data are encrypted with PGP (Pretty Good Privacy) or GnuPG.
Here is some information to decrypt these files.

- You need PGP or GPG software. See below.
- You need a password (key) to decrypt the encrypted files. The password should be sent to you from the DARTS or projects.
- When you have PGP or GPG on your machine, you can decrypt an encrypted file with the following command:
  ```
  echo $PASSWORD | gpg --cipher-algo=3des --passphrase-fd 0 $file
  ```
  where `$PASSWORD` is the password and `$file` is the encrypted filename.
- Please find the mission specific information at the mission page or the data page.

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## How to obtain PGP or GPG software

- [The International PGP Home Page](http://pgpi.didisoft.com/)
- [OpenPGP](http://openpgp.org/)
- [Symantec](http://symantec.com/products/encryption)
- Macintosh: [Mac GNU Privacy Guard](http://macgpg.sourceforge.net/)
- Windows: [Gpg4Win](http://www.gpg4win.org/)

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Last Modified: 20 December 2023