-----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-cakephp-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-cakephp-14.1-jessie-amd64.iso 38c6cdfa5d394696f6ef979a2dc236e8 $ sha1sum turnkey-cakephp-14.1-jessie-amd64.iso c00a2686f59313597a5e5090a1acf5f5825b1a0a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPwAAoJEIXCXpWhbrlNcbAIALNOVWIw4iexI74EDh/R0OFg yGcXBKHa5Bh5KYMQk4dzETNEQp5hKYCbmESIbc06G83CoHnZRzcpjTyPUeW0M9Zx ICJJnrKjfqd+CzFj2aEYr7s9G1WsqMngr0zurJcrom7ZebGCk4SoR6tCnyHSflsZ wlvNGH2xMJFYk9NJM7E0J1VsCBK2zL8bacNSFscXZKpl8hUv+57G7lTiEiiF7ny3 4YaFmqRZM+neiMq3/CjBXBlIM2psPMiW7YVHsQxrM9kLhgx6HhqVd3FwbN5YZvKv SNMpvRTaW99pmMLz4bk1KtCkZ2bS3hPJlIX/yKFNhk7uaf4SQRqdFPR1bNUymiE= =OJTK -----END PGP SIGNATURE-----