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-joomla25-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:50:44 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 2fa408affc2e833743a593e3b15ea9134a9fe399 * md5sum 3cff905824d53f6e95b115567e8f6e4b 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) iQEcBAABAgAGBQJQM3YIAAoJEIXCXpWhbrlN+fkIAJe+PcUQHKUn7JlUSKEbfUnY emHGoSasP7V1HdFDZWX6y54aWJzu7nlX1NyWyntQrqFZKfF9AeThKONpfDxd+En3 41McOncrmIZXMx3Ssa7IQGPwopuxLiK9fREhRVbJPgcn9g2s5ObPaPfXGZgeyEtH mQCA/Jf1N8RbOqdgYe3VHKlwlq2pKVWLwgQcBMagiuJvFTwoxwNUfejGP0UIozjT s+jEB9IT8mrOocIY6r1YaeR6M2BpNbb26MVHewZ8NbAuRwczd/UA5IK3Ng2UGepk ScFrGf1vMEQaPHBPJ1NsqBNtZZe0NSKn17vaGjMQZdVApfBlSpfMP0g7QV8zXEI= =PQzu -----END PGP SIGNATURE-----