-----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 debian-8-turnkey-revision-control_14.1-1_amd64.tar.gz.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 debian-8-turnkey-revision-control_14.1-1_amd64.tar.gz 441e26486e7b179f36684cd3f585cc76 $ sha1sum debian-8-turnkey-revision-control_14.1-1_amd64.tar.gz 10c5189da4489cb7bdf8434fe93fa9f10ea97b48 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnuAAoJEIXCXpWhbrlNHHYH+QGHkUjcaK0RbP7UtxGJM6N9 hxScSwdCWyMirxf8Z3wbTBwDmQ3E2J8INhB6MX6V5dK+2zYM8t/yMPT688DxPGOj IkZ+Xu1b8DcuA3d0tzOwed6YJQxXNZaaur1hW/+PmkzT+Q/h9Lao9Vz6hJdS+y7t 19U5X1SeSMZksyQxa0qUIG3O/MgCXNJIsQbZ0YTkj0Ek5h3Tma8vjvGrraSz/W/L q/jrXRzNazURL4oUUai/53ocKTCrg2PoaknrZr31c41H4Pvjt8tbn66uqekHHFU4 9t/7yyf83ObTDyXBvAcetZG9XU5VBYPlQhzi8khf6birnO150phTVasbHKIKhWM= =sVoA -----END PGP SIGNATURE-----