So they're using Google's BoringSSL, which according to Google itself isn't intended for general use: > Although BoringSSL is an open source project, it is not

So they're using Google's BoringSSL, which according to Google itself isn't intended for general use: > 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. (from https://boringssl.googlesource.com/boringssl/ https://boringssl.googlesource.com/boringssl/)