Don't parse delta CRL and CRL number extensions

These extensions were only parsed for delta CRL support. Instead, ignore
CRL numbers and treat critical delta CRL extensions as unrecognized
critical extensions. This trims a pile of dead, untested code from the
verifier.

Update-Note: While this is broadly a no-op, this may change behavior
slightly at the edges. Invalid CRL number extensions will now be ignored
instead of treated as a parse error. A delta CRL that incorrectly marks
its delta CRL extension as non-critical will be interpreted as a normal
CRL. (This is the expected behavior for an implementation which does not
implement delta CRLs. Extensions like this are supposed to be marked
critical.)

Bug: 601
Change-Id: Iece9a8acce83a7c59e129499517fc8eb0d048e98
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/63931
Auto-Submit: David Benjamin <davidben@google.com>
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
3 files changed
tree: 03985ae7963e62fd6cfe8ecb05caa0ebbf221069
  1. .github/
  2. cmake/
  3. crypto/
  4. decrepit/
  5. fuzz/
  6. include/
  7. pki/
  8. rust/
  9. ssl/
  10. third_party/
  11. tool/
  12. util/
  13. .clang-format
  14. .gitignore
  15. API-CONVENTIONS.md
  16. BREAKING-CHANGES.md
  17. BUILDING.md
  18. CMakeLists.txt
  19. codereview.settings
  20. CONTRIBUTING.md
  21. FUZZING.md
  22. go.mod
  23. go.sum
  24. INCORPORATING.md
  25. LICENSE
  26. PORTING.md
  27. README.md
  28. SANDBOXING.md
  29. sources.cmake
  30. STYLE.md
README.md

BoringSSL

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: