-----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-nodejs-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-nodejs-14.0-jessie-amd64.iso f12b54fa7f3973d3e4f715c65b701d3f $ sha1sum turnkey-nodejs-14.0-jessie-amd64.iso 2efc404711bb007c052e1af608d1151c25b7953d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrpAAoJEIXCXpWhbrlNezIIAO0Sl/K/Ish/Gg5xffpTdw/g F4pQ+3JM1sYP73EWByhTyUHr6a9EsBag4rT269fvI5Kc+hsR5059c9/+ABkJIdwc kgqatlYLHH4OdB7rw3QOYQ9oNTfoBVbRB+rxGXknhMmsQ/qaKkN8KKRMehG7UCHW k66FrGOeMWimEGgcfXQ0mU8omjdEJjzpOaCGN2ZcEKBTe2Zoqjm09R29xtoBB67e gbEnntJ5EODrfvQ7fiS78hiOrvo/BGUS2EztCKVylNaYd69J8IyrncTM19g030NX NKQcrhUtExqgmDSveNbk70phzE1WDUnqu53i17BsLfJnwGUsG3ut1wMjxc9+yeg= =pmNm -----END PGP SIGNATURE-----