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-appengine-python-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 12:24:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2ee39772fc1432180542bdaf59bcd35cb376ae70 * md5sum ae11be70eedf49d61d7b6fb9e30df37c 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) iQEcBAABAgAGBQJRrdxXAAoJEIXCXpWhbrlNc7oH/0eZOXYhq7q5FbFhoPIiq38f E6yfmiPGpsu0y3nxq4P19TnrDem23jzNDmFGyhoAve16JU1c29YmYuKYMdJYMhb6 2JWCyVpfunMxB1FcOnTlhlgcG00wJhJti/GFdTn4+Brc0HzOqJYkuW7Bk9Hp2IJ4 Jy3KBsLLHu5GB6biuS5x9UPL8FgZYuTcT0P8s3/kjFRUIZA/vSaZZ6NTOBPCzJei O5wQorBoOzhu7FnYVVxBtJXPceW0/xrJs4e2pWCV5b7nkDU4wWiXFKMOKaSRkmR/ 4FXi9zDfMMWk4iqdjVDVcsXkNm6Ch0ZYv3uMBsuPaY0X8C8ygnoh2byohfjRnC4= =ZSr/ -----END PGP SIGNATURE-----