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-postgresql-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:50:13 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e0d988f36d0bb304a62d8eefa68aa1a8e645925f * md5sum 93f7c9c34ab9cb46faa689fa2b604ade 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) iQEcBAABAgAGBQJSXmFMAAoJEIXCXpWhbrlNmHwIAMg7VM9ujWjqMoD+xOBrlzrU rVpYfQYM9v0LPLZN6v55eYAuHRPUfyd14hmwcIhQBVX1ihBz+KGZvMOrjS0nAp3x 5NsbAwyPUB4ZyzLqIwGKghgjWEqOSkiqZzbLSVGcNuN5k/W0Pr5iOakD+izFUFoX Vq4z95m48q6rIeY6et4e0KneSu9XYBwS6re2uLWFS+d1w/EWoUDZsRo5Gcei54nE Hx1LMWPk5eXX9o9Lz/oxQrnEhb3fvSgBpSY1NeCii8evyDlDCIT/p5EPXNAxYqeX pKJXwYtSOstCMg//h3og92jPI41MG6bB5TUwalrXqY4RsN5LtNMUQ64rizNj1Zg= =QLH/ -----END PGP SIGNATURE-----