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-piwik-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 15:19:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5732aa235993604772b4d8216abb5d231cb4c7ac * md5sum 7d5a3aad75fa07bfecb9175fdb5d4907 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) iQEcBAABAgAGBQJRrgV9AAoJEIXCXpWhbrlNu0sIAIt58G7TbX7Cs2Qg3s3dQ0gj nfU2+jOxSrwk7NYw6Cbh8qH7dTFtG5eOxYZWzCIntLyHY800yVljI7wWk0059yp4 Kb4gBUyxdUqZ5qOEunElcEtMgsJINEdXbevgzCY5DqFJ8pVZMIBHbPdsZtXDPS+X ALeH3HnRakYPDbbB+rTGuQexTabEhy35ARAsPEPBywOrrbI/yZqR7sir6srUQyil 183jXq0QU1gRXNNfsw9IplgaefitoG/gY7pMQNtwp6KEQynfil/8OY0+/OwOxXgH wEo23EsCZVrW5fgIN1pM47+dmABt5ujbuQ5UJhVywI6xb0UZ6hVnxlIKbzAIJNM= =WhEh -----END PGP SIGNATURE-----