-----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-gnusocial-14.2-jessie-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-gnusocial-14.2-jessie-amd64.iso 692945fa6ea28f44f8a7ffe2af7129c6a442e80e4d3c31485c87161acd1e58c1 turnkey-gnusocial-14.2-jessie-amd64.iso $ sha512sum turnkey-gnusocial-14.2-jessie-amd64.iso 12e0659fe85791eda4a36d97a9230205ea2eb50df25d78f038c53ae9de04431f2367a62edb123131bdae21e67758123b5b6972ddf9f11e5cee5963131359c434 turnkey-gnusocial-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-gnusocial-14.2-jessie-amd64.iso.hash turnkey-gnusocial-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-gnusocial-14.2-jessie-amd64.iso.hash turnkey-gnusocial-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZVQkpAAoJEIXCXpWhbrlNE+wIALUGQOFza1cDoF6Q8dyzq+rU nfvOiLwCnz6Qx2tSGi3oEuMpTDYChCaaHURwMnWkW8vkOUzV9gwTRAGGKGJwQv0/ YPYS4neINs8p6II9NPZ/gxgfAwNsi2IRO+DKzULa3qMYwPIpmv6em2hXA++8nLlH zjz2Sgadxn4mti8zHf9Tl9LWJN8+hpe8KmAK7zb8ONMQMAS+zcweyNXfyMUZF9CL CAkNmAtvKC2pGuB3MLNW4UyCdmOCTiICC6X167BehiTwoVX5Qtx1JKsAny3Nw0MD PFhUqX5OT3WEMo0Fv96ZKbc8cEDEbQHoqKrf73l+OEKLvWEibF7gmavMvMAZwdk= =OagM -----END PGP SIGNATURE-----