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axelarnetwork / tofn

A threshold cryptography library in Rust
Apache License 2.0
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[Blocked upstream] Don't use unsafe code to zeroize SigningKey #183

Closed ggutoski closed 2 years ago

ggutoski commented 2 years ago

I used unsafe Rust to hack an impl of Zeroize for k256_serde::SigningKey. That's bad. This issue needs to be fixed upstream.

[EDIT: it's already fixed upstream. All we need to do is wait for the next minor version of k256.]

https://github.com/axelarnetwork/tofn/blob/43592321837c670d7b6f62f746c06df3484cb39e/src/crypto_tools/k256_serde.rs#L101-L111

_Originally posted by @ggutoski in https://github.com/axelarnetwork/tofn/pull/182#discussion_r728440648_

tarcieri commented 2 years ago

It was fixed upstream here:

https://github.com/RustCrypto/elliptic-curves/pull/449

Unfortunately it won't be available until the next minor version.