Implement `AsRef<[u8]>` for `signature::UnparsedPublicKey`, making it
possible to access the bytes of the public key. For consistency, I did
the same for `agreement::UnparsedPublicKey`, although it already has a
`bytes` method. `agreement::PublicKey` already uses the `AsRef<[u8]>`
approach.
Also, add missing `Debug` implementation for
`signature::UnparsedPublicKey`.
I agree to license my contributions to each file under the terms given
at the top of each file I changed.
Run the RSA and signature tests in WebAssembly.
Implement Elem*Elem multiplication for platforms for which we have no assembly
language implementation of it. Refactor the code to accomodate this.
`elem_reduced` was infallible previously as it always ensured the prerequisites
for the reduction were met. Make this clear in the return type, as a side-effect
of the refactoring needed for implementing the multiplication.
This implementation is far from efficient. More work needs to be done to make it
faster.
Switch to Rust 2018 Edition. Fix up some build breakage for different
configurations that were found in the process of testing this,
particularly `--no-default-features`.
Derive `Copy` and `Clone` for `Signature`.
Add some utilities for testing `Clone`, `Copy`, `Send`, and `Sync`
and use them to test that `Signature` implements these traits.
