-----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-piwik-14.1-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-piwik-14.1-jessie-amd64-xen.tar.bz2 1fb41f810ced4476f4c766e1d3bbd531 $ sha1sum turnkey-piwik-14.1-jessie-amd64-xen.tar.bz2 e449e5e90fb095dffb2181ada0b0b60ca9345c89 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlN74AIAOgWhVl+d38hiH+2zEZVV7fT onzL/4xF0t7JOB9U+SlHVCXNzp6WM6WetzkE1huKf0Lks0cChKQy517aErmnibjp AOU1m50G2lP1gXVoqiFEvNUq51jqimhdUMIP3tDJHgZbrNca4k/yDRqDy/lgPgg0 KlMDxHgUgvFeTbKXTlrfy62WLdH4fnKQWQv30O1Zc9+Ph9VH8LZeurSuMrM/fzhD tbp4Kez1n9mMOS+Wt7MXn/CnBUmDlhAK/GYBozuAWAkSqJFb1qbS0Hj5A8OHU/q3 HFCK22msfZ6ql30q6ns8e5HWhIowaYySOn/1LdHyI4j9oGcTq2oS/C2Wd2+oRVE= =ft2G -----END PGP SIGNATURE-----