Always verify checksums and signatures before installing.
certutil -hashfile enkai-linux.iso SHA256
Compare the output with the checksum listed on the download page.
shasum -a 256 enkai-linux.iso
Or use:
sha256sum enkai-linux.iso
gpg --import enkai-signing-key.asc
gpg --verify enkai-linux.iso.sig enkai-linux.iso
You should see:
Good signature from "Enkai Systems <releases@enkaisystems.com>"