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🚨 DEPRECATED! 🚨

Miscreant is no-longer maintained! The Rust successor is the aes-siv crate, which is the evolution of the original Miscreant codebase.

miscreant.

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The best crypto you've never heard of, brought to you by Phil Rogaway

Rust implementation of Miscreant: Advanced symmetric encryption library which provides the AES-SIV (RFC 5297), AES-PMAC-SIV, and STREAM constructions. These algorithms are easy-to-use (or rather, hard-to-misuse) and support encryption of individual messages or message streams.

Documentation

About AES-SIV and AES-PMAC-SIV

AES-SIV and AES-PMAC-SIV provide nonce-reuse misuse-resistance (NRMR): accidentally reusing a nonce with this construction is not a security catastrophe, unlike more popular AES encryption modes like AES-GCM where nonce reuse leaks both the authentication key and the XOR of both plaintexts, both of which can potentially be leveraged for full plaintext recovery attacks.

With AES-SIV, the worst outcome of reusing a nonce is an attacker can see you've sent the same plaintext twice, as opposed to almost all other AES modes where it can facilitate chosen ciphertext attacks.

Requirements

miscreant.rs requires Rust 1.36+.

To enable hardware accelerated AES support on x86/x86_64 using Intel AES-NI instructions, you will need to pass the following RUSTFLAGS:

RUSTFLAGS=-Ctarget-feature=+aes,+ssse3

You can configure your ~/.cargo/config to always pass these flags:

[build]
rustflags = ["-Ctarget-feature=+aes,+ssse3"]

Help and Discussion

Have questions? Want to suggest a feature or change?

Security Notice

Though this library is written by cryptographic professionals, it has not undergone a thorough security audit, and cryptographic professionals are still humans that make mistakes.

This library makes an effort to use constant time operations throughout its implementation, however actual constant time behavior has not been verified.

Use this library at your own risk.

Code of Conduct

We abide by the Contributor Covenant and ask that you do as well.

For more information, please see CODE_OF_CONDUCT.md.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/miscreant/miscreant

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as noted below, without any additional terms or conditions.

License

Copyright (c) 2017-2019 The Miscreant Developers.

miscreant.rs is licensed under either of:

at your option.

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Rust implementation of Miscreant: misuse-resistant encryption library with AES-SIV (RFC 5297) and AES-PMAC-SIV support

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