Add compatibility functions for sigalgs

Node.js recently added an option to override signature algorithms in
which make use of several NIDs and SSL_get_shared_sigalgs. This CL adds
NIDs for Ed448 (but does not implement it) and a shim function for
SSL_get_shared_sigalgs that simply returns 0. This enables Electron to
reduce its patch surface.

Change-Id: I833d30b0248ca68ebce4767dd58d5f087fd1e18e
Reviewed-by: David Benjamin <>
Commit-Queue: David Benjamin <>
6 files changed
tree: 35fdc8fb3ae7eb891751f15ef1e17fefe56b0524
  1. .clang-format
  2. .github/
  3. .gitignore
  7. CMakeLists.txt
  15. codereview.settings
  16. crypto/
  17. decrepit/
  18. fuzz/
  19. go.mod
  20. include/
  21. sources.cmake
  22. ssl/
  23. third_party/
  24. tool/
  25. util/


BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.

Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.

BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.

Project links:

There are other files in this directory which might be helpful: