-----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-silverstripe-14.0-jessie-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 turnkey-silverstripe-14.0-jessie-amd64.ova d5e0f49f21acaf0a2575e131b1f45ce5 $ sha1sum turnkey-silverstripe-14.0-jessie-amd64.ova ccaa7069b4bd1087abcb91badffb01c82f8516a4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdZAAoJEIXCXpWhbrlNmksIAN40mgu8CXBavzvaAq1jrJFG fEzpRag1L67JJVsL0olY6Ibuf0/KFqRMxelVpYqPh33rcwgVj4z8O9RdOEguo10C IyEeeNR21Rhon20SrFSAs/G7k+IdHM7f4kUJ3krRpJ45qILV5GwdU4e7E9WHF6Tr nz+bU1aho8NryR1J8tks4dDWJq6Y40zKOpb42YEu6evUt+UgL+zCc3xMDl1qre4n aziUxqSZc/R5dmXpm6MedRBm1RWH2SJVD1uFCdcUcc9jk3RkCZ+EDYODTniR0Ce2 9KHWbkgcAH0+Gzes3px2haWBHZ87VXBLTbRKfZbYXn1Pk3noj+qJUi/OF6XMGu8= =gtr5 -----END PGP SIGNATURE-----