-----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-14.1-jessie-amd64.ova.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-14.1-jessie-amd64.ova c1780c45846b120d4cfdbba53a9a0ed1 $ sha1sum turnkey-postgresql-14.1-jessie-amd64.ova db55594b962148051dd1696e9ab841030383dc5f -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNoAYIAI61LcLwAgYe63TYeQya8/RO GzhKlt6JfGlMPbsUfrH0IjGypcy97kWt8PDBJqQQtAE0yz6klm34a8z8hNmODlaK djGAT3HaFWG2USmnBG3JYO7uaAGNHPuV60pfOJ/oYyRXyCJWF1crjKJSQOFNyT5s vPgM66/XYcc3umcPUcV6XQlKGIyl4X8RtqBS3Krp3w2d1SjMHsZpM8f6aOHYoVNi HeIAzDTHq6zzZ4r+SUwg9WRA3TTN8wBtOgwhIY47k2oRYNDU9bD1VAB+LW+SPzIv DD9M9SiIieFXY4ma0ncpzU6rWbISMKl6CHVn+eWxMxzZDyl1qdTBVbEBWsvBEUM= =DyFy -----END PGP SIGNATURE-----