The "kx-*" features control default key exchange preferences. Its
implementation requires disabling APIs for manually setting curve
preferences via `set_curves()` or `set_curves_list()`.
In practice, most teams need to be able to override default preferences
at runtime anyway, which means these features were never really used.
This commit gets rid of them, thereby reducing some complexity in the
API.
SslStream::new() is fallible, but `SslStream::from_raw_parts()` and
`SslStreamBuilder::new()` now unwrap. Upstream has also deprecated the
`SslStreamBuilder`, maybe we should do the same.
Per BoringSSL's FIPS policy, its `main` branch is the "update branch"
for FedRAMP compliance's purposes.
This means that we can stop using a specific BoringSSL branch when
enabling FIPS, as well as a number of hacks that allowed us to build
more recent BoringSSL versions with an older pre-compiled FIPS modules.
This also required slightly updating the main BoringSSL submodule, as
the previous version had an issue when building with the FIPS option
enabled. This is turn required some changes to the PQ patch as well as
some APIs that don't seem to be exposed publicly, as well as changing
some paths in the other patches.
In order to allow a smooth upgrade of internal projects, the `fips-compat`
feature is reduced in scope and renamed to `legacy-compat-deprecated` so
that we can incrementally upgrade internal BoringSSL forks. In practice
this shouldn't really be something anyone else would need, since in
order to work it requires a specific mix of BoringSSL version and
backported patches.
As X509_STORE_CTX_init requires its arguments to outlive
the store context, we take ownership of all of them
and put them in the store context's ex data, ensuring
the soundness of the operation without the mandatory
call to X509_STORE_CTX_cleanup after a closure
is run.
As X509_STORE_CTX_init may fail after setting some values
that should outlive the store context, we must ensure we
clean things up on its error path too.
We also know it's always ok to call X509_STORE_CTX_cleanupas X509_STORE_CTX_init starts with a call to it.
* Revert "feat(x509): Implement `Clone` for `X509Store` (#339)"
This reverts commit 49a8d0906a.
See <https://github.com/cloudflare/boring/pull/120>.
* Ensure Clone is not added to X509Store
* Add comment about why X509Store must not implement Clone
---------
Co-authored-by: Kornel <kornel@cloudflare.com>
This method reliably retrieves the certificate the `X509_STORE_CTX` is
verifying, unlike `X509_STORE_CTX_get_current_cert`, which may return
the "problematic" cert when verification fails.
Newer versions of FIPS don't need any special casing in our bindings,
unlike the submoduled boringssl-fips. In addition, many users currently
use FIPS by precompiling BoringSSL with the proper build tools and
passing that in to the bindings.
Until we adopt the Update Stream pattern for FIPS, there are two main
use cases:
1. Passing an unmodified, precompiled FIPS validated version of
boringssl (fips-precompiled)
2. Passing a custom source directory of boringssl meant to be linked
with a FIPS validated bcm.o. This is mainly useful if you carry
custom patches but still want to use a FIPS validated BoringCrypto.
(fips-link-precompiled)
This commit introduces the `fips-precompiled` feature and removes the
`fips-no-compat` feature.
The "fips" feature implies use of a prebuilt boringSSL. The boringSSL
API consumed by `SslCurve` in incompatible with older versions of
boringSSL.
In the `ffi` bindings, the following symbols don't exist in older
builds:
* NID_X25519MLKEM768
* SSL_CURVE_X25519_MLKEM768
* NID_X25519Kyber768Draft00Old
The following symbols have been renamed:
* SSL_CURVE_P256KYBER768DRAFT00 => SSL_CURVE_P256_KYBER768_DRAFT00
* SSL_CURVE_X25519KYBER512DRAFT00 => SSL_CURVE_X25519_KYBER512_DRAFT00
* SSL_CURVE_X25519KYBER768DRAFT00OLD => SSL_CURVE_X25519_KYBER768_DRAFT00_OLD
* SSL_CURVE_P256KYBER768DRAFT00 => SSL_CURVE_P256_KYBER768_DRAFT00
Meanwhile, the `ssl_set_curves_list()` API is stable across these
versions of boringSSL.
These codepoints are added to the `SslCurve` API whenever
"pq-experimental" is enabled. Since this feature is no longer mutually
exclusive with prebuilt boringSSL (`boring-sys` just ignores patches),
we also need to disable this API whenever "fips" is enabled.
Apoorv Kothari