This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-cakephp-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 08:25:48 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f9f974cf13dc502204793def148972b0184fe82a * md5sum bd6d49e951858275257c4eb64248c6fc You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXk2DAAoJEIXCXpWhbrlNb1cH/24RI2F2hmHJUPkRyoaWhJ5O GgbjP0Y4gsp/prHQMEVS/kaWP8qJ0MAMVrORZAPLWiJ5EFSQ865Fpp08AmTK1G4t 3B2+7+SjiQMSvypLm8U+UIoT9RCgnAS/0z4k0jLVB75VwULRIHFUkpPz2Ferp/EY 9WDpzgQueHehFx9wI0VShwz+syflEkibTbHZiKm5WcG0DewMvy5qZwSQ1p+5xhBl r561LeR3E1R5caQrWlbtciC3FkwC2thmjyVNpSB7J5kSyMekH4JPPRcS877uXCot u9nwoJY144tTJyBKj33Rrk43B4qHG0TIuq8jONj2Aal0TaoRmjk+tNPbDnYxkxI= =GRPB -----END PGP SIGNATURE-----