-----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-prestashop-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-prestashop-14.1-jessie-amd64.iso 480f4621323f0f32537ad425cf79b5ca $ sha1sum turnkey-prestashop-14.1-jessie-amd64.iso fa6c9947da6ec5104562e9aa27227c220a5b0858 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNz30IAMK6K+Y6oPuWBYUC+9ARHbCt esSDbTL6+7EF+1ngGoPj8Fk7VjumPqvkZy0fQ1KgCUO1lGHzCodPnLIMynX+bQpI ldKQ/ELIfd3sqcMZtQ6FRgRy83ELH+q+/2V47MzCEtBxX7BZtzI9PXCEGrD9O6YX fXIpQ6Tr6mmPEdhRb2bmbCDmf9+FBfSTkiE3LJdG1ok70uVhAk5R5LUmfjKgR1GD 2GY/C9hyhK3HGguUD20+FeL9qwq56r1WkAqx+IwItmqVsU3s7Itbuf9OMJ5XVlBG cOjO9YXPm0pLWW0T7W2N9ky7MFuvbYKFHq4F9819vUh13qMRcCeCGz+nDZGv8hE= =YqdD -----END PGP SIGNATURE-----