-----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-etherpad-14.0-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-etherpad-14.0-jessie-amd64-xen.tar.bz2 8ee28843997659c5393e21572e7ca746 $ sha1sum turnkey-etherpad-14.0-jessie-amd64-xen.tar.bz2 9580a4413a1f2dbc0f2c3962c4951c2a5e4227d1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiAAAoJEIXCXpWhbrlNfGQIAOVEv/yRVcBgr4PsQuQYJPfo iurXinBMa3m1JZQj9eIV5mJoH63HHJ6yYfWkSs7k8nmRhtqkrlQA/c0Hpua8kCgN Go2F/BaxEtLF7jf4gs4fz0OpjggZP19ZTvZ0WPWf/w7TwIhUYleQpYAHgDtpdS7O 0fPi7Ln+uW5YxifDOZIgl/I0dnAwTCTdfBheMdYmoLRkV2cByP4q434jefECucaV bbH26XS1UWBI0VjtSMTi4RbgGmDh4pOcl4lNnJ4UQmneD9gPyqG5JFqoW+lhlHeg 9ZrOYA/s1frmqZqC1ELcdWQfWZN5VwA+2nZan/42J9udbBnorRefOowu/Ob1s9M= =0u80 -----END PGP SIGNATURE-----