-----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-e107-14.0-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-e107-14.0-jessie-amd64.iso f37e98c37758b55ea367f57894d59202 $ sha1sum turnkey-e107-14.0-jessie-amd64.iso 05809c78be70590ebac7bf8e7a7251a7b0fe2636 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BroAAoJEIXCXpWhbrlNE30IALgkmEc3c948uZoF4xgoEuf4 2hkLy+6xLe1WXMQCehA1IKvcIl8mcU8eCPBECLade85Zccmf7WOFkLAla9WbY2xs hSbXKHxCKcPFn64yYIBdRllas0F+q4jLQdDoQqp0juXRV/wSPO6ZCsSHIf0Rsnb1 szMsHY2iIvHCjL/4OgkWtYVDYpzEJJ5nrNiMDeF+BakyXTwAIBoV6ILQ0fZneiun InK+dCeVTOu1+lckSZkXHQd/6HwVsFGjiojiILm3xPLhQlkEeEVI4B0Mj8skbNed ptD+ukIjNmOKC7WTbEluYZXBFBVMSaZwyZ/WzCiiFDI3y0F+aptrE48HfSm58Zk= =JRW/ -----END PGP SIGNATURE-----