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-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 15:19:28 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 689dbf1aa29940dcb3eadfdd510fdafacf64d76c * md5sum 215f6069336b932c5ebbe052e1fb8cbf 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) iQEcBAABAgAGBQJRrgV4AAoJEIXCXpWhbrlNz+AH/jz2+0I2zUIwWM3BeZ0/6+Wi HaIiM1v60XkwyyyNkcCR5Rtilnv4my0+JAnmTEE6vk4FAE3ztcQ3aRHBDgILTHaE WH3FS/u8Us5KK+5DVnxczLNNKH5sOKIXk0jQcbVMqvPuH6sbg3E92Tjs6x4iJ447 rxlybqcjNnts8Mqx1gpT+/p0P0Z7uW0m1SX44P/0qjju867CEsaKVtlJjx/ei0Qv LdnRbP0RwghxaBJT/8n2pAkaqdclJ/MsINQmF79CmGn5bNK6+7lrEAhB9VTtLdDG OZuUAHJPtTpdl555E72rm1DVoJ2jvJ/nj3/Cq6oo5Yiergbp8DH1VYsQHLhgIcQ= =zwPR -----END PGP SIGNATURE-----