-----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-cakephp-15.1-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-cakephp-15.1-stretch-amd64.iso 8e782c9e70900232d5c4d421877ad1c7718434c6723e79596e3e5e21a3bf3ec1 turnkey-cakephp-15.1-stretch-amd64.iso $ sha512sum turnkey-cakephp-15.1-stretch-amd64.iso 7663ca4cf3b92dbb18161824c4632b6ce7c2291f9e1439c787f7efdae50bb6849eb9f349dc251a05234900adaa07415ff92334d5dec5388e050934ab9fd053ad turnkey-cakephp-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-cakephp-15.1-stretch-amd64.iso.hash turnkey-cakephp-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-cakephp-15.1-stretch-amd64.iso.hash turnkey-cakephp-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phcACgkQhcJelaFu uU1iGAf/QnzvwcF4Wk05X34K4mNiCNmHjXvBcJVfj1ip2f+CHtpWgfSqRjkCaotN QR7ezXvSB9at6SJQyq7bxGp7xtr58b9LHWxNEGk0DwxYTkFeiUFtKDgD63Qiq2mB 5+cwzmCv/adHGlre16FdNJ6Ge80TkiappsfkB8aYAlS6pWJbYkhQBGp5URvtkfkC G5Fw9hDypeJ55fKKYMVKSrIgiKBnGVWQUg5CVFf/FEX6d2f1xzwf/+QeSfh3erEG ZINk9N82eP47JJNT3fxF2OqNKJk3XeiHkpnB2zN0QaBI2HknlufdbAPlntvqvjsB ul5uCp7PN73QyvgEbP2vbkGKe2+kGQ== =1ZKi -----END PGP SIGNATURE-----