RUSTSEC-2020-0058: 
Rust vulnerability analysis and mitigation

RUSTSEC-2020-0058 is a vulnerability related to the renaming of the stream-cipher crate to the unified cipher crate in the Rust cryptography ecosystem. The vulnerability was disclosed in October 2020 as part of a larger effort to unify the block-cipher and stream-cipher crates into a single cipher crate (RustCrypto PR).

The vulnerability stems from a significant architectural change where the stream-cipher functionality was moved to become a module within the new unified cipher crate. The code was relocated to the cipher::stream module, requiring users to update their dependencies and code references accordingly (RustCrypto PR).

The impact is primarily on dependency management and code maintenance. Projects using the old stream-cipher crate need to update their dependencies to use the new unified cipher crate and modify their code to reference the correct modules (RustCrypto PR).

To remediate this issue, users need to replace all usages of the stream-cipher crate with the new unified cipher crate. Specifically, code should be updated to use cipher::stream instead of the previous stream-cipher imports. This is intended to be a drop-in replacement requiring minimal code changes (RustCrypto PR).