The `RandBytes` functions were being placed in the `crypto` namespace,
which collides with Chromium's namespace of the same name. Within,
`RandBytes` was defined with almost-the-same API. Then in Chromium
builds, the Chromium header would be used instead (though somewhat
inconsistently).
This creates a lot of pain for Chromium development as there's a
third-party repository directly depending on headers from Chromium's
source tree, and is against the third-party policies for that reason.
There are a number of other headers that mirror Chromium and are
swapped out in the Chromium build that will cause similar pain, such as:
```
include "crypto/aead.h"
include "crypto/ec_private_key.h"
include "crypto/hkdf.h"
```
This CL provides a template for how to get rid of these header swaps and
give a platform abstraction in nearby instead.
We provide a platform abstraction in `platform/crypto.h` (really in
`platform/implementation/crypto.h`) which is implemented in
`platform/implementation/shared/crypto.cc`. However that implementation
is removed by `#ifdef` when in the Chromium build.
Then, in the Chromium repo, we will add (separately) an implementation
of the same abstraction in `//third_party/nearby/platform_impl` with GN
rules to include it in the build. It will replace the implementation
from the nearby repo.
Copybara import of the project:
--
6ca8099 by danakj <danakj@chromium.org>:
Provide a platform abstraction for RandBytes instead of swapping headers
The `RandBytes` functions were being placed in the `crypto` namespace,
which collides with Chromium's namespace of the same name. Within,
`RandBytes` was defined with almost-the-same API. Then in Chromium
builds, the Chromium header would be used instead (though somewhat
inconsistently).
This creates a lot of pain for Chromium development as there's a
third-party repository directly depending on headers from Chromium's
source tree, and is against the third-party policies for that reason.
There are a number of other headers that mirror Chromium and are
swapped out in the Chromium build that will cause similar pain, such as:
```
include "crypto/aead.h"
include "crypto/ec_private_key.h"
include "crypto/hkdf.h"
```
This CL provides a template for how to get rid of these header swaps and
give a platform abstraction in nearby instead.
We provide a platform abstraction in `platform/crypto.h` (really in
`platform/implementation/crypto.h`) which is implemented in
`platform/implementation/shared/crypto.cc`. However that implementation
is removed by `#ifdef` when in the Chromium build.
Then, in the Chromium repo, we will add (separately) an implementation
of the same abstraction in `//third_party/nearby/platform_impl` with GN
rules to include it in the build. It will replace the implementation
from the nearby repo.
--
9c2654b by danakj <danakj@chromium.org>:
Remove CryptoSpan, use absl::Span
The header swapping of Chromium crypto libraries is
problematic, but absl::Span will convert to base::span
so there's no need for the typedef even without
removing the header swapping yet.
--
df1135d by danakj <danakj@chromium.org>:
Add missing files
--
ab18a15 by danakj <danakj@chromium.org>:
Remove the random_unittest.cc from Swift build
The file moved, so the Swift package needs its path
updated.
--
2038f78 by danakj <danakj@chromium.org>:
Combine crypto unittests into crypto_test.cc
--
f7ad176 by danakj <danakj@chromium.org>:
Add stdint and stddef includes for uint8_t and size_t
--
9f04590 by danakj <danakj@chromium.org>:
Mark the shared crypto implementation compatable_with non_prod
--
18eeafd by danakj <danakj@chromium.org>:
Add IWYU pragma for crypto implementation
PiperOrigin-RevId: 632150866
1. Update the API to accept the credentials on input instead of credential manager.
2. Update the test with values using the LDT encryption.
These changes allow us to have a more asynchronous implementaion.
When broadcasting we can:
1. Fetch the private credentials asynchronously.
2. Create the advertisement and start broadcasting when the credentials have been fetched.
When scanning we can:
1. Fetch public credentials asynchronously.
2. Start scanning for advertisements.
3. Update the decoder when new credentials are fetched.
PiperOrigin-RevId: 493998041
We are still missing the real LDT implementation, so the code is linked with a
placeholder code that doesn't do the actual encryption.
We also needed to pass the `account_name` to credential manager to choose the
correct credentials.
PiperOrigin-RevId: 483801163
hai007