bluetech/pcsc-rust

Linux, macOS, Windows:

Rust bindings to the PC/SC API for smart card communication

pcsc-rust

.

  • Nice, safe API.
  • Tested on Linux, Windows, macOS.
  • Mostly zero overhead.

See the Documentation for more details.

See the pcsc/examples directory for some common tasks.

Contents

The pcsc-sys crate contains direct, low-level bindings to the C API.

The pcsc crate contains high-level Rust wrappers.

Usage

In your Cargo.toml:

[dependencies]
pcsc = "2"

Example

Connect to the card in the first available reader, send the card an APDU command, print the APDU response.

use pcsc::*;

fn main() {
    // Establish a PC/SC context.
    let ctx = match Context::establish(Scope::User) {
        Ok(ctx) => ctx,
        Err(err) => {
            eprintln!("Failed to establish context: {}", err);
            std::process::exit(1);
        }
    };

    // List available readers.
    let mut readers_buf = [0; 2048];
    let mut readers = match ctx.list_readers(&mut readers_buf) {
        Ok(readers) => readers,
        Err(err) => {
            eprintln!("Failed to list readers: {}", err);
            std::process::exit(1);
        }
    };

    // Use the first reader.
    let reader = match readers.next() {
        Some(reader) => reader,
        None => {
            println!("No readers are connected.");
            return;
        }
    };
    println!("Using reader: {:?}", reader);

    // Connect to the card.
    let card = match ctx.connect(reader, ShareMode::Shared, Protocols::ANY) {
        Ok(card) => card,
        Err(Error::NoSmartcard) => {
            println!("A smartcard is not present in the reader.");
            return;
        }
        Err(err) => {
            eprintln!("Failed to connect to card: {}", err);
            std::process::exit(1);
        }
    };

    // Send an APDU command.
    let apdu = b"\x00\xa4\x04\x00\x0A\xA0\x00\x00\x00\x62\x03\x01\x0C\x06\x01";
    println!("Sending APDU: {:?}", apdu);
    let mut rapdu_buf = [0; MAX_BUFFER_SIZE];
    let rapdu = match card.transmit(apdu, &mut rapdu_buf) {
        Ok(rapdu) => rapdu,
        Err(err) => {
            eprintln!("Failed to transmit APDU command to card: {}", err);
            std::process::exit(1);
        }
    };
    println!("APDU response: {:?}", rapdu);
}

Example output:

$ ./target/debug/examples/readme
Using reader: "SCM Microsystems Inc. SCR 355 [CCID Interface] 00 00"
Sending APDU: [0, 164, 4, 0, 10, 160, 0, 0, 0, 98, 3, 1, 12, 6, 1]
APDU response: [106, 130]

License

The MIT license.

Issues

Collection of the latest Issues

nwalfield

nwalfield

Comment Icon6

Imagine that you have a small virtual machine, which is implemented as a state machine. It might be driven by a program like:

The state machine's state can't easily hold both the card and the transaction, because Rust doesn't like self-referential data structures. To work around this, the transaction could own the card.

pbor

pbor

Comment Icon0

The pcsc should re-export pcsc-sys as pcsc::ffi, this way one can add just pcsc to Cargo.toml and avoid possible future issues if a new version of the pcsc crate requires a specific version of the pcsc-sys crate.

pbor

pbor

Comment Icon0

I would like to use the pcsc-rs crate to implement a rust module which in turn exposes a C api.

In my case I would need to

  1. Go from Context to SCARDCONTEXT
  2. Go from ReaderState to SCARD_READERSTATE`

It would be great if there were into_raw and from_raw methods.

Information - Updated Jun 18, 2022

Stars: 66
Forks: 16
Issues: 5

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