-----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-vmdk.zip.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-vmdk.zip 42219285707c262afb6760d5a18fa752 $ sha1sum turnkey-piwik-14.1-jessie-amd64-vmdk.zip a9a2c5cee184eb7981e30aaa25b0fcc31d9e8bce -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNC1IIAOGbWy6VIuQGJqPliG+evV1S P9UbKktJnEl/RyV7Aazv0RLiTdOU1/6xxOZC+AH1v150iBTrdgDjxW12OXQx8rXn Z5QrJeH2XiWo3Y6K0VKxSDPZZ/ucbfMHSiunu+uHwHYmy9zfSqsoxKlYDQ5/ZomF AHfZPnucU/L94VIyB7UxrIkjVlQzio8Y8LWl699SAnb7tgmvSlqJKlQ6gd18UpSx Mw6o638yppWHSStWIIRBpgPKjIzs/hk+oo9YBWdKsMnp+TvbKMndSmwGosfr/6c4 pPyyeXSXzXQqKQ96JrxH+udozkugOyi0+RkAQsDKDt3f0nu/H/GtqC2aiotYWEQ= =YvsY -----END PGP SIGNATURE-----