no_std support with alloc
#183
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Added basic no_std support by switching to `core` and `alloc` libraries wherever possible. Restructured features in Cargo.toml to allow for customized setups with or without the standard library.
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FYI @mcginty |
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Ping @mcginty, any thoughts or comments on this? Would love to get these changes upstreamed eventually :) |
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@jmlepisto I'm so sorry for dropping the ball for this review, it looks great though and if you're still willing to see it through I'm excited to get |
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This is great. Because of my own failure to review this in a timely fashion, I'm going to go ahead and manually merge this and resolve the conflicts, as well as layer on any extra changes needed from other feature additions.
It unfortunately will get marked as "Closed" instead of merged because GitHub doesn't offer a way to manually mark PRs as merged.
Thank you so much!
| // Make sure the user is running a supported configuration. | ||
| #[cfg(feature = "default-resolver")] | ||
| #[cfg(any( | ||
| not(any(feature = "use-curve25519-dalek")), | ||
| not(any( | ||
| feature = "use-aes-gcm", | ||
| feature = "use-chacha20poly1305", | ||
| feature = "use-xchacha20poly1305" | ||
| )), | ||
| not(any(feature = "use-sha2", feature = "use-blake2")) | ||
| ))] | ||
| compile_error!( | ||
| "Valid selection of crypto primitived must be enabled when using feature 'default-resolver'. | ||
| Enable at least one DH feature, one Cipher feature and one Hash feature. Check README.md for details." | ||
| ); |
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Hi there! What a nice thing to see that you decided to include this 🎉 Don't worry about me having to wait a while. We all got our own lives outside of these projects. PS. Your work on snow inspired me to take a crack at Noise protocol myself. Clatter is a statically allocated implementation with post-quantum support even for the most rudimentary embedded devices. |
Basic
no_stdsupport for environments whereallocis provided.default-resolverwith or withoutstdBasically all crypto primitives are now individually selectable with
use-xxx-yyyfeatures. Users can build their own combinations of DH + Crypto + Hash withdefault-resolverto create minimal builds without the standard library for embedded targets.lib.rsincludes a safeguard to make sure that all required components are provided at build time.This changes the feature flag interface of this crate a bit, but existing features are left in place for the sake of backwards compatibility.
Providing
no_stdsupport for other resolvers beside the default one is not in the scope of this PR.#62
#179