-----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-tomatocart-14.1-jessie-i386.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-tomatocart-14.1-jessie-i386.iso fc5bf40039817c1d2edd1a0b1640bc8b $ sha1sum turnkey-tomatocart-14.1-jessie-i386.iso 505ff855d8e91b9b33d6214fac8f363a4a7d1413 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkP0AAoJEIXCXpWhbrlNewoH/jpWVP1q3SxSRewEufxgGuVF l+5K3WHGSlzLnxVoovNMl5tdO0ZzaDtmGhkROfVCN3SRBeCrkr0S9m3vVFULf5ce SkZEfADsMgArNAz9qZztad3M28qHG94WGzorrtWzfkA8HkgmGIpWymTK69qFzMQt VFJsqBU2SfvHG9wxvChUsJyKD6XWvT66O1+p7xZHCH87j9/nEjVhF1x+celBOkkT G+8yPllHWk/nIx730+HtSSeUM02M2Ca3or3YazKMilY9wMo7E/TVXv0JaycSYXWp cPSVvLhii4x61kZg5OSqB4YHN/vZg6uqs824daRoxbGkRfrF380mpQTamK3iEhA= =FGXJ -----END PGP SIGNATURE-----