Code reviews of the crypto2 crate // Lib.rs

RUSTSEC-2021-0121 (unsound) on 2021-10-08: Non-aligned u32 read in Chacha20 encryption and decryption

The implementation does not enforce alignment requirements on input slices while incorrectly assuming 4-byte alignment through an unsafe call to std::slice::from_raw_parts_mut, which breaks the contract and introduces undefined behavior.

This affects Chacha20 encryption and decryption in crypto2.

CVE-2021-45709

GHSA-9hfg-pxr6-q4vp

GHSA-pmcv-mgcf-rvxg

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