-----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-punbb-14.1-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-punbb-14.1-jessie-amd64-xen.tar.bz2 08f2cde12bc5a250303d720dcbd0e9d0 $ sha1sum turnkey-punbb-14.1-jessie-amd64-xen.tar.bz2 1dfeb138c5c1c073f4899eb76cedf3f63b0654a6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn5AAoJEIXCXpWhbrlN9CoH/1xmpWhvujx7g0aAyb/F36kw Rvw59SMZ50hdkPXMlf3VM5BiValueU6OQwwy7UqraAKCS7rL/qiXJxm7XzKxdphs eeV5jFrek5JG0vKj0cd/rSNdfJCUwNMszWepAUzIJ/7+4vB2T3lxoYmYE+UvdwFq gTA8MYg55vmSHGyfOksnzodE6DqdJCPexquF3mHo9tGODgONOgJ6LgaSDOEMYcMv t+qZ//IaieycouZ0A8mIKlHaBQ0tYEDRQlVPiFC9Wk0T/FajY5AVCewq4DQZGX8J /1D2r5zHMIE3+heO/SRjSTSQwYXK6/fpy2IhrNgzZttnzlpj+i/qqS979xaPnZc= =zTip -----END PGP SIGNATURE-----