-----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-yiiframework_14.1-1_amd64.ova.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-yiiframework_14.1-1_amd64.ova cde44a41abb8b078c56fbfa7ac1cc4ce $ sha1sum debian-8-turnkey-yiiframework_14.1-1_amd64.ova fd682452f1bb012238a1d9c2e813a25e7d09931c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnvAAoJEIXCXpWhbrlNtCgH+wYCuD1QmegL5DicXag/YRFY UU9lPHGkSLLi1i2i5Dhsguuot6zCSPemJOznJC+kKwXbk4qa7MpQ93djQYOj3vlT Zdbzwz5upvuAfUHkX04va55KJ28Mc2R5d+2+6Xj87R2jy1AvmFZ54hdDZ/n4RcWY ZL+Lzn3QKa+pHrNZZpFNgMcqlhEg5ivHD7bOUAyXFwO6ML4L+0doPFm5+fExNc72 praOev3icKAxaNmSTdAoTkmvD+CYsTBfj/sRQZMUK1GHytpCBBzt01CafdcbuFW+ D67LShjrC6Xk1C+c0CCG9fHPQvCfA3CRD0WT5UYO/ldW+6Tyq7Gh1N3+R5/gGQ4= =CTaa -----END PGP SIGNATURE-----