-----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-phplist-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-phplist-14.1-jessie-amd64-vmdk.zip 51a7a2bc751aa944f0e23ce912055c04 $ sha1sum turnkey-phplist-14.1-jessie-amd64-vmdk.zip 146404d592abfcfb6b136fe751455d9213829a23 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNMVoH+wfPadMyTDJsg2dDSq67xjH0 EQGLnfucoF0xJwJ4Xs9v87zvnxri6djYhizCxq3N4gDirZSCuBwQ8TCXZVBrelsH vvmwFLGU3rtllZh2BgMVPWzMFdXRejRHFxeDg3vYIeYY1QIefttd3st6KxnjUQ+p TINRGU2ST/UGat9n8H61lkJNtOTaYoGjDjATqs+BkdvODUD+O8tr+G1ifMRiQmMv I+phPnpUrgYLSXMqyjCL5B8Gj2M56GNhfjwdPKkkmZgTfAfBB2HELYKSpuKoLY88 /Qwc7xDVwwJTsWk1NJ9P/hrGHFGcRqTjLABUF5GhBy3gOMVWG9j7GvWQeK3m4iE= =L/Fj -----END PGP SIGNATURE-----