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-asp-net-apache-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 14:50:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 42c73a1735d8fd4024d2e32c1bde58c26e069f9b * md5sum 4f1874e1028a2c3b138761b68d4141c5 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) iQEcBAABAgAGBQJSXVY4AAoJEIXCXpWhbrlNdOwH/3/xzGEQ2EH2cK04d4arY8nD 8pLfwaSYUXMoB83ufdkjqAVrp079NPQbMByFP1COl+RYyC7syJnExuybN8KmBE8s d12d+qSA4xX5RX/tUiHN597Ya6daCUqefaxcZr9V5XF0iXIEdhELVSDIiSHyNYck SQwAJrK3BfE1LEO4+9peTfhpTbmvGiVmQwF1fdbfsEU6kMX8zqv5QpYVP4hbxOSg dR1oK4Udp/hktHVygJSa91J47bTrIjoHb1JMjCX863p0yMCiBhD9wz3bcYFIQCyz BczDeeCpId2kCv9vuYSl41opRnEsDmGy36xFuYLtf88NxH8I23K0pra6HmrZV54= =GdXO -----END PGP SIGNATURE-----