-----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-nginx-php-fastcgi-14.0-jessie-amd64-xen.tar.bz2.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-nginx-php-fastcgi-14.0-jessie-amd64-xen.tar.bz2 a2dda376d44df033b822af6fcbd5027f $ sha1sum turnkey-nginx-php-fastcgi-14.0-jessie-amd64-xen.tar.bz2 062c8e465ac900d3d790c80c0f81a50a587dada4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiBAAoJEIXCXpWhbrlNRfMH/isL+EhPx7ELw9xaH4m7vWCn ItTqFUjMPXVyGo19Z+h1uR4SysZKQrYA2qb/B12/aZ5BkskOjXVywAk95ZjIvFgs 8/1hEjcfTvHStSD6v+yDoErcdtghbzUF9Iv8tRFCqSPoNw5iZQZymB1f5xXSggDo Lo2/KjIXXK33pvT9pffRkTxPnPY1aXAv74gTWr5b1cJtwBVtibi/LyLUqMeq88iR zzHjzJo9Cc1HhZKQ+uFmdnABhzmLsYCkmNOStZtjgHbXs4E9LDetC0ro/8zCEafS rEt22saEcxfA9/sLyZoClxossb/Bnf7dpeosjqWWlnBxKFGs+TG/bcIQOnDtzSc= =gSpT -----END PGP SIGNATURE-----