-----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-elgg-14.1-jessie-amd64.iso.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-elgg-14.1-jessie-amd64.iso 1a38aa3c3be00b712474af8f1a837311 $ sha1sum turnkey-elgg-14.1-jessie-amd64.iso 2c790c95fb076ac40b16547adcf016a39599c8ac -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlN5AgIAKKccjHxR2PHIDJY4uD9+QGC o44UVI3G6SnVSAwmnsRoLa7QKjGrOCgRR1ZvtmNUjE9eW7T2ZeS9OhFUR65F/uVl QUaWjZdZ76201RJFqZc5FnQqXRC6N43JXy7X5oZTukmqERi/7EVPtZfM3ujM8vaM FSxFhcqqlT8pZCxYhUcRCoFAjwk3zDGntlm2pqPz/yfNS6uMe00pbPW0rVBMTd/I TTcDOyBXP0hNGVKj9J4M0WrWdLRHwn/1XybUEsOtHbV0+/VZDRTV4j5XEcVnL0Wr TLJnHSz/qKr+KrcOau9Cf+YeOo0IaBClE24hKTxp4e1naXpQIdRaj6g1GSGNo78= =9r56 -----END PGP SIGNATURE-----