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-phreedom-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:09:13 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 0eba2e60a1220188d6c3a3776256d21b2e9d0e17 * md5sum ef8a3c12af4ec06f75a031d870912b5e 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) iQEcBAABAgAGBQJQM7KdAAoJEIXCXpWhbrlN0qkIAIN536VVlyONKMaSe1ku/jz3 ZplIIToKp4Hw66E0Bp0APkxa73P8FVnFhpHuh+P8BUwz7tlfvW8kh4mW/RSqM/Lj 6PXNCGMr/DE0PgIvBsnIZmnWOEHB4ULMYqAfTuRNDImtlz/1GYEsTy3qUHrjlBYt JeSmiqYGeERCd2A+OUgh/IND9oAy0wBntEIqswQ15H//hNM7WJbWh0PweZnKyk0T +/rGmOuZbaUpua1vKULC/l7bGi7zvoXjlpkjgTgMq6ZHCNIBQG6eiAM05LHCGPSL TqCKJAqCCdydzY40K8RzoefMuiohShvaV1DjThIG4EfVs+xjoKNCwFWNA3pb3tU= =7fAy -----END PGP SIGNATURE-----