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-zencart-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:44:26 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 671847353465dba2a3e8f1c5b924f04a9b80cdae * md5sum 43531f05e76ee1cfab28d8b757bf4f42 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) iQEcBAABAgAGBQJQM4KeAAoJEIXCXpWhbrlN4NUIAKteeuOvzIzV78P8INK6PaAh S3Gw6YiDLu1kDByTytgm3thVh6BVweiCd7Jg5uxfOx/WPCLp0YQVsSaLGqy3C30h S9mGU/gkm8S+08izPb++p5gm2s5wFmnvTiMfWYjsdnqsBU6xwawKBbH3qjElzh14 qkt69O6LZRxeOwsRfo8+3meFeCTv0xLhhpigQx+7ozrwWrPm7GBVq/trwE3YCg5v kVHCxjaukbJWqzj1e/ARDMlfbsViXqITLfjMhfQPHP2Z819pMOIEQsHHfL2A1N+v rol6YCuWTZpKSeGh/7DsAYzMfuaeMHUe9kme1I3ZOSmIs4xBjSnzxSn621MH01w= =W1xS -----END PGP SIGNATURE-----