refractor

src/device.rs

@@ -0,0 +1,25 @@
+use crate::error::*;
+
+use ctap;
+use ctap::extensions::hmac::{FidoHmacCredential, HmacExtension};
+use ctap::FidoDevice;
+
+pub fn perform_challenge(credential_id: &str, salt: &[u8; 32]) -> Fido2LuksResult<[u8; 32]> {
+    let cred = FidoHmacCredential {
+        id: hex::decode(credential_id).unwrap(),
+        rp_id: "hmac".to_string(),
+    };
+    let mut errs = Vec::new();
+    for di in ctap::get_devices()? {
+        let mut dev = FidoDevice::new(&di)?;
+        match dev.hmac_challange(&cred, &salt[..]) {
+            Ok(secret) => {
+                return Ok(secret);
+            }
+            Err(e) => {
+                errs.push(e);
+            }
+        }
+    }
+    Err(errs.pop().ok_or(Fido2LuksError::NoAuthenticatorError)?)?
+}