[tls] Poison initial key derivation function master secret

A freshly initialised key derivation function master secret has the
"keyed" flag clear and so cannot accidentally be used to establish a
full TLS connection.

As an additional layer of defence in depth, poison the initial key
derivation master secret so that a predictable all-zero secret can
never be used accidentally in future.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
1 file changed
tree: d856eb0a440457c3daedd5d315bdaf7d36bbc6a0
  1. .github/
  2. contrib/
  3. src/
  4. CHANGELOG.md
  5. CONTRIBUTING.md
  6. COPYING
  7. COPYING.GPLv2
  8. COPYING.UBDL
  9. README.md
  10. RELEASE.md
  11. RELNOTES.tmpl.md
README.md

iPXE network bootloader

Build Coverity Release

iPXE is the leading open source network boot firmware. It provides a full PXE implementation enhanced with additional features such as:

  • boot from a web server via HTTP or HTTPS,

  • boot from an iSCSI, FCoE, or AoE SAN,

  • control the boot process with a script,

  • create interactive forms and menus.

You can use iPXE to replace the existing PXE ROM on your network card, or you can chainload into iPXE to obtain the features of iPXE without the hassle of reflashing.

iPXE is free, open-source software licensed under the GNU GPL (with some portions under GPL-compatible licences).

You can download the rolling release binaries (built from the latest commit), or use the most recent stable release.

For full documentation, visit the iPXE website.