-----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-core-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-core-14.0-jessie-amd64-xen.tar.bz2 8dbbebcd08b80cf1826b82ff6901307e $ sha1sum turnkey-core-14.0-jessie-amd64-xen.tar.bz2 4a94df4cb20b380146bb2648830f7337439685cb -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiAAAoJEIXCXpWhbrlNaR4IAMbrISBa72KjGSbkcKzMbwFr w3B5K4TFcBQlu0oE0mkZi+PoaV7ZgHP3y/h0t3QFUW4fuO1PRR1usD8wDiXm9rti 3p+t64Ng/F7Mee0kTgSGzTrFPtaw6VGZJZVyaFxilHCjb2kiA2znSW42FemMHUQR 8+taT09SAXC+8eHZ011+RgSEks8PXbUV9Fe4+iWenS6mdIOzw8RNWbaQSlCE+Hsv xn/pwO6H319FSI9ps+2XWm4Ue/eNA0/LTf22VLlDRSZ+jU4Q1VIU5+meXinywz/+ 0rdcp048px4XbHLP6SCc9pOn8b37hc4fpVCLXE3HnDwQXdAPXQWaZQRWuy8jZFA= =wT6X -----END PGP SIGNATURE-----