apdu-app 0.2.0

trait for APDU applications
Documentation 
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#![no_std]

pub use heapless::VecView;
pub use iso7816::{command::CommandView, Interface};

pub type Result = iso7816::Result<()>;

/// An App can receive and respond APDUs at behest of the ApduDispatch.
pub trait App: iso7816::App {
    /// Given parsed APDU for select command.
    /// Write response data back to buf, and return length of payload.  Return APDU Error code on error.
    /// Alternatively, the app can defer the response until later by returning it in `poll()`.
    fn select(
        &mut self,
        interface: Interface,
        apdu: CommandView<'_>,
        reply: &mut VecView<u8>,
    ) -> Result;

    /// Deselects the app. This is the result of another app getting selected.
    /// App should clear any sensitive state and reset security indicators.
    fn deselect(&mut self);

    /// Given parsed APDU for app when selected.
    /// Write response data back to buf, and return length of payload.  Return APDU Error code on error.
    fn call(
        &mut self,
        interface: Interface,
        apdu: CommandView<'_>,
        reply: &mut VecView<u8>,
    ) -> Result;
}