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-prestashop-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 15:38:15 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c8177aa4c2175308e102786e0d28cb4d6e74c26a * md5sum ac0022707185c2a9d129774207d11e4b 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrgnfAAoJEIXCXpWhbrlNXMAIAIW7jEB3saNj1XFiIkq8xh70 E38v5uA1nWPDWxBIJYKB8NskYkUPxkYeVqPOiVlz/0eTOkJpTyuGk8nc3uTg9Zai OLTS8V8eR4av6yGOQsw4dXH0OtYXsdYx4yjB6/msJAMJ8tb7qZUemKwwmyj059Ir 9Tn9fe+4wAKGfILf5dcT9GCOCBiR13PaSdRNZ7CI4s2e1hptOhgQRx5BM4Z/L+6e OETuycUX5yuLpO0hgFj4x6HuPRjsxy/DfKGINi1aD7sMlTGBv3F9WQr7LERgWTpg 0ixXkHxnLtfg5AcMmPG+94bCjuKE+6epfKVJVZ0w9jt8+owbJ83dq8G1L/iM130= =NPHk -----END PGP SIGNATURE-----