-----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-owncloud-14.0-jessie-amd64.ova.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-owncloud-14.0-jessie-amd64.ova 61033deff3a88d8eb6ecfd4f82b1b633 $ sha1sum turnkey-owncloud-14.0-jessie-amd64.ova 978af32753a82f339bba0ec6d2280f0fc9c3522d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdYAAoJEIXCXpWhbrlNaUgIAMFMMuspYepuzFX4oH4DTt4T SfcREUd7hN6GGu1IEQ8GKuESBMux/zxP6IqyCtAktZCmHjlV97T5xfRDmHA70Muw hpoOZeobTNP1PCehwnnD15KFZM8HXEnuNsenjvhqnUkylNrB1xhGYTLm1SwFiFP8 nwrgLDsFq05RykzOxLFeuvW5hwcgYFSSKKm4Emi/zRKzXrttsCXjiKnS4Qn22TYx NEERHDEmRycQ/fJl5x8ancyCm823Ks1fV2SONpGlhIGwmg70zzYxzo7XpiFEWY/b x7kDmXijDyGmNUTC1K0MrstlkpMlMIPmHhCRmPAZRVWZwGa8NvLSiIcBbl668ik= =YQsL -----END PGP SIGNATURE-----