-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --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-14.0-jessie-amd64-xen.tar.bz2.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-postgresql-14.0-jessie-amd64-xen.tar.bz2 f82576c248b96e01f0bab00e6588d292 $ sha1sum turnkey-postgresql-14.0-jessie-amd64-xen.tar.bz2 ef2f3a83a2f859019c9baa318d1e7e68c6cee263 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlNEQkIAL3nDHIlprg0BsNaLcY9T9px XW6BcoufPXbK7U84VZU1r7kXq1tFGQyvepLCuP0FKcieZoSYrmO7wGqRMIssgK1V g1cVkbxj/x82YHt2fbpqYy3jE/hR/r2c9nzt8rK88MBEhlDKCvi9djRR7XNlTdps Gg2opGHkOfrwrck7CDHATWtkrCmye16XthjYzmOuYIoeG1HIwwqkMVmZzoUGqSSv nAVsT7nMeVpKAtZccz1zhr5/b+bwqywuayfnnU61ywJobanf9CVfM1iO2AbNuLBa SMjlP8DfoLortRsKnNtoZEEwy3Dm4piZbdJ4i4c85NPbG+KQoa2HCw2oPzwi7kc= =1wY1 -----END PGP SIGNATURE-----