You can see how we build and test against aws-lc in our CI: https://github.com/pyca/cryptography/blob/c3aac1fad241e334e26c36c899a5779a866679af/.github/workflows/ci.yml#L46 https://github.com/pyca/cryptography/blob/c3aac1fad241e334e26c36c899a5779a866679af/.github/workflows/ci.yml#L109-L122 https://github.com/pyca/cryptography/blob/c3aac1fad241e334e26c36c899a5779a866679af/.github/bin/build_openssl.sh#L64-L74
While this is complex, it mostly boils down to compiling aws-lc and then specifying its location via `OPENSSL_DIR` and possibly also adding the `RUST_FLAGS` depending on your environment. We'd be happy to take a PR that documents how to do this more clearly, but for now our CI is the only documentation available. -Paul On Wed, May 21, 2025 at 1:19 PM Husnain Taseer via Cryptography-dev < cryptography-dev@python.org> wrote: > Hi, > > We are excited that cryptography version 45.x has introduced support to > build it with aws-lc, however there are no instructions provided and it's a > bit hard for someone with little to no rust knowledge. > > I have been trying to build the Python cryptography 45.0.2 with aws-lc, I > have replaced all the openssl and openssl-sys dependencies with aws-ls-rs > and aws-lc-sys in the main Cargo.toml files and also in the sub modules > within `src/rust/cryptography-*`. After updating the dependencies, the > build is still failing because there are Openssl import statements within > in the submodules like for example this one - > https://github.com/pyca/cryptography/blob/45.0.x/src/rust/cryptography-crypto/src/pbkdf1.rs#L8 > > Do we really need to update the dependencies in the submodules > (src/rust/cryptography-*)? What is the correct way of building it with a > different crypto provider (aws-lc)? > > Could someone please provide us the instructions or point us to the > documentation to build it with aws-lc as a crypto provider? > _______________________________________________ > Cryptography-dev mailing list -- cryptography-dev@python.org > To unsubscribe send an email to cryptography-dev-le...@python.org > https://mail.python.org/mailman3//lists/cryptography-dev.python.org > Member address: paul.l.keh...@gmail.com >
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