-----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 debian-8-turnkey-observium_14.0-1_amd64.tar.gz.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 debian-8-turnkey-observium_14.0-1_amd64.tar.gz 4d7c8c8e7349ea1ecd4be37dd412cc8f $ sha1sum debian-8-turnkey-observium_14.0-1_amd64.tar.gz 08bc2025d62778cfece510dbed78bd11581454b0 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxUAAoJEIXCXpWhbrlN5VMIAIhKOnhlX0KdQ0ZMFPrIaoVK NNRvPv/FEPBDj/FPsKYK67Vr+TO8E2MEoGMnfbUSEtaVsGbgJUqXm89vKnNbZ8S2 Kf/9AcdXbb8RCevkrudQERky4PXYWzTywKDBsPd7blfiL9Cx9wFXLElSD5cSJt4I RXFz0uuhYuUgNwz3VhGRGloCfk9tNDhLfJZrXXIj2M9Zvuhu3zOhASI43TWqQO9o NTcMls9szynESAIikeJ7vUT1eVf9DiVNp9HeBO8cF5vE5t1hN4bKLqTm9KWKG7uf pCQ/TAIE2UCHCKFyF53omyqgcYVhdUp9HmA4fwg/W8EQBgdtciuLAn7xhCIkfYE= =+oME -----END PGP SIGNATURE-----