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-e107-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:41:40 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 618f3da684e2b94be9c9403a958ca61f187960d3 * md5sum 3965effe5c355842dba9c840b07867ec 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) iQEcBAABAgAGBQJQM3PoAAoJEIXCXpWhbrlNopAIAJ6VzPGEXJAP2qfs8VCs86Z+ 3Mw2tqtnPfKAMcD+CEvbOneV7Sb53eiLNB+KJGT7UUid0VoMup9RuZPZgWbuolef wCQbbDdvXhrZYtVCe79shfdhnirWxPXjRi9WwLQ/X2qJX6FQV6s7PAUGoQfqNTmd p+x+wuOrPFYuCb0tlYXUWZM/fTsu3xufourWIl7E5SWMf+wMWTDLIRUWhB9tQBsb WKeocuY2gAIfdJLgvub8S1eh6motDRdDx8VJdNjpNdajl8T4WDaBgSS1ACIexv0L HltuH+5KYWETFthKFDDhPMLIre8lAGPaabbJTiYxoua0m7vmymzWbouPR1ncOB4= =Hh0t -----END PGP SIGNATURE-----