-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 To ensure the image has not been corrupted in transmit or tampered with, perform the following two steps to cryptographically verify image integrity: 1. Verify the authenticity of this file by checking that it is signed with our GPG release key: $ curl https://keybase.io/turnkeylinux/pgp_keys.asc | gpg --import $ gpg --list-keys --with-fingerprint release@turnkeylinux.com pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] Key fingerprint = 694C FF26 795A 29BA E07B 4EB5 85C2 5E95 A16E B94D uid Turnkey Linux Release Key $ gpg --verify turnkey-mambo-15.0-stretch-amd64.iso.hash gpg: Signature made using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key " For extra credit you can validate the key's authenticity at: https://keybase.io/turnkeylinux 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-mambo-15.0-stretch-amd64.iso 1f32ed25cedf27f02714f60df2c05233c0991f8ab1cc381a555d6f7f8d536d1c turnkey-mambo-15.0-stretch-amd64.iso $ sha512sum turnkey-mambo-15.0-stretch-amd64.iso c0b6e14e7b292b24c3b400b6aee2caa17604ed18883fc5f46fdc462d5eadbf6d4a179e2f191f1895a4cb0b4b069fe060e406530685c87b3d6409dd2f7016c37a turnkey-mambo-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mambo-15.0-stretch-amd64.iso.hash turnkey-mambo-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-mambo-15.0-stretch-amd64.iso.hash turnkey-mambo-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTsACgkQhcJelaFu uU1R5ggA2I6eg7IrOhXIhHHR9bf/88+vor75vJSJdN3YTXESEih5CdRb9tSNMG5R ReIXFvHScCejUNwChbl7/89eMSCO/fXVVQfHmJj7C632WzYcr1PxdoyPo/NuMq0s YtDchL/12kOHOv6rX72EhTvKLA6NkmXEbuKvJs231d9t8LQzIpsmSUutxYlgZb/S mZI/dMP1S2M4QkPTQ6254XkSlOBUFPvKxOsgrbEOGw/xWcrQRKg/BaYvaVsWVils JJqjvKfJC27/l7RizfFzjm1n0nN7k/+crMfzkGXPPHI/bL0692lOcAJqK/vyqURM uRZSrNTo50EusRAwm2In4BeMxB1thw== =+bss -----END PGP SIGNATURE-----