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yubikey.rs

crate Docs 2-Clause BSD Licensed MSRV Safety Dance Build Status dependency status

Pure Rust cross-platform host-side driver for YubiKey devices from Yubico with support for public-key encryption and digital signatures using the Personal Identity Verification (PIV) application.

Documentation

About

YubiKeys are versatile devices and through their PIV support, you can use them to store a number of RSA (2048/1024) and ECC (NIST P-256/P-384) private keys with configurable access control policies. Both the signing (RSASSA/ECDSA) and encryption (PKCS#1v1.5/ECIES) use cases are supported for either key type.

See Yubico's guide to PIV-enabled YubiKeys for more information on which devices support PIV and the available functionality.

If you've been wanting to use Rust to sign and/or encrypt data using a private key generated and stored on a YubiKey (with option PIN-based access), this is the crate you've been after!

Note that while this project started as a fork of a Yubico project, this fork is NOT an official Yubico project and is in no way supported or endorsed by Yubico.

Minimum Supported Rust Version

Rust 1.57 or newer.

Supported YubiKeys

NOTE: Nano and USB-C variants of the above are also supported. Pre-YK4 YubiKey NEO series is NOT supported (see #18).

Supported Operating Systems

  • Linux
  • macOS
  • Windows

Security Warning

No security audits of this crate have ever been performed. Presently it is in an experimental stage and may still contain high-severity issues.

USE AT YOUR OWN RISK!

Testing

To run the full test suite, you'll need a connected YubiKey NEO/4/5 device in the default state (i.e. default PIN/PUK).

Tests which run live against a YubiKey device are marked as #[ignore] by default in order to pass when running in a CI environment. To run these tests locally, invoke the following command:

cargo test -- --ignored

This crate makes extensive use of the log facade to provide detailed information about what is happening. If you'd like to print this logging information while running the tests, set the RUST_LOG environment variable to a relevant loglevel (e.g. error, warn, info, debug, trace):

RUST_LOG=info cargo test -- --ignored

To trace every message sent to/from the card i.e. the raw Application Protocol Data Unit (APDU) messages, use the trace log level:

running 1 test
[INFO  yubikey::yubikey] trying to connect to reader 'Yubico YubiKey OTP+FIDO+CCID'
[INFO  yubikey::yubikey] connected to 'Yubico YubiKey OTP+FIDO+CCID' successfully
[TRACE yubikey::apdu] >>> Apdu { cla: 0, ins: SelectApplication, p1: 4, p2: 0, data: [160, 0, 0, 3, 8] }
[TRACE yubikey::transaction] >>> [0, 164, 4, 0, 5, 160, 0, 0, 3, 8]
[TRACE yubikey::apdu] <<< Response { status_words: Success, data: [97, 17, 79, 6, 0, 0, 16, 0, 1, 0, 121, 7, 79, 5, 160, 0, 0, 3, 8] }
[TRACE yubikey::apdu] >>> Apdu { cla: 0, ins: GetVersion, p1: 0, p2: 0, data: [] }
[TRACE yubikey::transaction] >>> [0, 253, 0, 0, 0]
[TRACE yubikey::apdu] <<< Response { status_words: Success, data: [5, 1, 2] }
[TRACE yubikey::apdu] >>> Apdu { cla: 0, ins: GetSerial, p1: 0, p2: 0, data: [] }
[TRACE yubikey::transaction] >>> [0, 248, 0, 0, 0]
[TRACE yubikey::apdu] <<< Response { status_words: Success, data: [0, 115, 0, 178] }
test connect ... ok

APDU messages labeled >>> are being sent to the YubiKey's internal SmartCard, and ones labeled <<< are the responses.

History

This library is a Rust translation of the yubico-piv-tool utility by Yubico, which was originally written in C. It was mechanically translated from C into Rust using Corrode, and then subsequently heavily refactored into safer, more idiomatic Rust.

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.

License

yubikey.rs is a fork of and originally a mechanical translation from Yubico's yubico-piv-tool, a C library/CLI program. The original library was licensed under a 2-Clause BSD License, which this library inherits as a derived work.

Copyright (c) 2014-2021 Yubico AB, Tony Arcieri All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed under the 2-Clause BSD License as shown above, without any additional terms or conditions.

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Pure Rust YubiKey host-side driver for PIV-based RSA/ECC key storage + signing/encryption support

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