-----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-pligg-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-pligg-14.1-jessie-amd64.iso 9886826bb1988d3aa14cad9e1e1f11ad $ sha1sum turnkey-pligg-14.1-jessie-amd64.iso b55a16bf73eb45e06654f659e9aaf9282087c65d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNAHkIAII81sy4m17eA8onEeYWjCD+ i4g3cdONP0tJs1uK4Hy2Lbl+ArUJgnq7qrEH2dIvM50KrwBBIna/6DFvf/YdiwmF +OmVnr7kXC3fiLS/dKOs/mDGvX4FF0pJYj6ZZ/tskCSQ+vavejohJpcGPE4NbAqf s08rpTshsD/hdinL3v/afSubLBXdYMXJMFU+CCqde9WIRtOD7TD1eyGGKyktycw9 pl1oWWfgwMIeFG8/NUYyagilwAas0PsHiJ3502TJ6kncMr3Iov2qRgGvolIgKwTl VWAkYIZJXyGYbLOsJsJAvtdwwvhVeEgFc/SlrQj3Txa1j8xx/JeFaPRpcorvGYw= =2Tpk -----END PGP SIGNATURE-----