-----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-oscommerce-14.0-jessie-amd64.iso.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-oscommerce-14.0-jessie-amd64.iso a4587914b850bf30b43ef463ee915f0f $ sha1sum turnkey-oscommerce-14.0-jessie-amd64.iso 1566a99dafd2e234fc113035411fa99fb293991d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrpAAoJEIXCXpWhbrlNnJkIAI2/wVJ2QV/2RQ7BS5Nn5oXm I9BZeO4M7SjF4ZKfq0F/f7BQ3uG+Z5rvlSNTGaqzXx9OI1ntJ3uZT8SGdOYmNb2A 23ZWKSv7+3PPzr5iHCSyZ06K13PPV4d4Umug/Cn53tx1utGTEtxgiZoFLoOXfB3t r01NsdYbdY+mVb/ufEpSVzPBDTKIERskzdYk4NMvhvDzYl5w2uBbjCng8MwAF6lO 3U9J3Qy6EKIetbEWtA3QHRW1VwL8ej6gmaoPi0Dxx7/SfA5wBStwgen5cCxkRFOl V3eSbf/hBy9lKUvODaBAl8uVkcPDiupcH7PBqH/bv2k4Wjb3wNQOtgLTDESAdgY= =K2vN -----END PGP SIGNATURE-----