Fix lower bound in e in FIPS RSA checking.

SP 800-89 5.3.3 references FIPS 186 for the bounds on e. I /think/
that's section B.3.1 which says:

  (b) The exponent e shall be an odd positive integer such that 2¹⁶ < e < 2²⁵⁶.

But that means that e has to be at least 17 bits. The check for
BN_is_odd ensures that 2¹⁶ itself is rejected.

Change-Id: Ib39f9d43032cbfe33317651c7b6eceb41b123291
Reviewed-on: https://boringssl-review.googlesource.com/15324
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
1 file changed
tree: 7e9ad45ca59100b4d941f218cad2d1218205c85c
  1. .clang-format
  2. .github/
  3. .gitignore
  4. API-CONVENTIONS.md
  5. BUILDING.md
  6. CMakeLists.txt
  7. CONTRIBUTING.md
  8. FUZZING.md
  9. INCORPORATING.md
  10. LICENSE
  11. PORTING.md
  12. README.md
  13. STYLE.md
  14. codereview.settings
  15. crypto/
  16. decrepit/
  17. fuzz/
  18. include/
  19. infra/
  20. ssl/
  21. third_party/
  22. tool/
  23. util/
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.

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