-----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-14.1-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-14.1-jessie-amd64.iso 04b5a0c461231bc96fed711a77a9193d $ sha1sum turnkey-nodejs-14.1-jessie-amd64.iso f5ad2669ac2d47300a4e2cb1ff46882bd964cdeb -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNgzcIAIWJcSnvZldvhDX8mGtX9c0w SjYQAa6d+njWDNiA+0HmXdQkJ9bMltBGAm3NntPzDaG11eFQX6dRi6ddlEy0MkDv PtiloZ9wbGmVIEg/gMsIyA+boRQihyBNlNYu3w17qg/6S+vsCGLvWpX171oCqbi2 da04L5bMcxyRcuTwLoOHx1v4z9JEM9q7oX1hQnqqIvsJJh+c4X0ywWZBb7W5/3tV 8IGB1JyCAKH/YVz//79WdkuiOO7C3kcFDtonGNxvnGBAIkLrtiJRzf8DS9focos7 xKHXOf04L5AKjwNPDR0A7OJ7nB1RyJZc2S38uP46EDZCn0ZsHeMhO0UVFbDXTkM= =8rxS -----END PGP SIGNATURE-----