-----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-yiiframework-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-yiiframework-14.1-jessie-amd64-xen.tar.bz2 1243a75bc68bb54956e87f42184b8bc9 $ sha1sum turnkey-yiiframework-14.1-jessie-amd64-xen.tar.bz2 50398984dd7f5e0a2bc8ff72b38f009a30a28d73 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn9AAoJEIXCXpWhbrlN5ksH/1iZtC+QzJeNhCqudr/Uzxho y0zNMGhzld+C9DyxUCosEnPaYaG0LQQOSP2Bw+eZlefXoaoRR4yNBuXqElSYY0Ry JrZXbd1uoqpVit1NIRtmpjW9aqDODvk4XvPEGYUxQ1e96HjFA5cOxLIfrf6yxS88 O/PGB+nDV769rl28whr5gzXvEwQiP4gvg6C2lfS0LInpYvKzKTwGeIICPYh7LLSq DSli6HcpTQpZlVstDAztqOLXvM2GV77cpH1ZKfVDiQ5copqa3hgP/zQBrssMp7au xJiJSndt3+/WQ0cmNVIgGr3QX3Tef11Yf+iKHp5fv6PXkfoZSXg7MV25CUIORz4= =sG5x -----END PGP SIGNATURE-----