-----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-roundup-14.1-jessie-i386.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-roundup-14.1-jessie-i386.iso bcfa5158bfc8f462064a6db963364dca $ sha1sum turnkey-roundup-14.1-jessie-i386.iso f7c1269e3e104b8af1d372d691af36561c376c13 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNafQH/Rlbn5jqfGVB512MyE3MB2eA L4C06xmTvh4bZq8REmiqVxiVToes66pMma7VmJoikWm82Rn2S7h2gDYWIJpzCyPi xQOiwRhDEB5wbvgDoiwUlAL1ttALx9DAm2DmcNbgcKcdL1Ah8aXpD7SjujvV+LmW vPpw6lRbpfo3GWf7iiN3Vo/ZjXaME6RMqquMGP0qFGi/4k+PiHSNejc1PzWgspFS +nFOIbxmOZ9mFeJS3QwzPAvOyKalDAJ6Z1j7mt64SKBtAx7YEUDWwGbbE8C9tFhh NGJ54Oz9yJTIbp7RdlEzN0wpCHI8JHKSrCewq2eaoTbr/KI2nnBLS3Sq4HIbNgo= =Tz5v -----END PGP SIGNATURE-----