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support for XChacha20Poly1305 via implementing HChaCha20 #7

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mcginty opened this issue Mar 9, 2018 · 1 comment
Open

support for XChacha20Poly1305 via implementing HChaCha20 #7

mcginty opened this issue Mar 9, 2018 · 1 comment

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@mcginty
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mcginty commented Mar 9, 2018 •
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I'm currently using this library in the Rust userspace implementation of WireGuard, and have found myself shimming a non-optimal HChaCha20 function to meet the spec. It would be great if this library supported it directly!
@mcginty mcginty changed the title support XChacha20Poly1305 support for XChacha20Poly1305 via implementing HChaCha20 Mar 9, 2018
@tarcieri
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I looked at adding HChaCha20 to this crate, and it's not exactly straightforward as it's not amenable to a SIMD-based implementation. I wound up implementing the entire construction from scratch:

tendermint/tmkms#31

I can try to put in a PR for this crate...

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@tarcieri @mcginty