docs: remove redundant readme examples

README.md

@@ -53,127 +53,9 @@ The `nusb` backend has the advantage of not depending on `libusb`, thus making i
 > [!NOTE]
 > The `nusb` feature is not available on Windows. If configured, the library will default to using the `rusb` backend instead.
 
-### Perform a Challenge-Response (HMAC-SHA1 mode)
-
-If you are using a YubiKey, you can configure the HMAC-SHA1 Challenge-Response
-with the [Yubikey Personalization GUI](https://developers.yubico.com/yubikey-personalization-gui/).
-
-```rust,ignore
-extern crate challenge_response;
-extern crate hex;
-
-use challenge_response::config::{Config, Mode, Slot};
-use challenge_response::ChallengeResponse;
-use std::ops::Deref;
-
-fn main() {
-    let mut cr_client = match ChallengeResponse::new() {
-        Ok(c) => c,
-        Err(e) => {
-            eprintln!("{}", e.to_string());
-            return;
-        }
-    };
-
-    let device = match cr_client.find_device() {
-        Ok(d) => d,
-        Err(e) => {
-            eprintln!("Device not found: {}", e.to_string());
-            return;
-        }
-    };
-
-    println!(
-        "Vendor ID: {:?} Product ID {:?}",
-        device.vendor_id, device.product_id
-    );
-
-    let config = Config::new_from(device)
-        .set_variable_size(true)
-        .set_mode(Mode::Sha1)
-        .set_slot(Slot::Slot2);
-
-    // Challenge can not be greater than 64 bytes
-    let challenge = String::from("mychallenge");
-    // In HMAC Mode, the result will always be the
-    // SAME for the SAME provided challenge
-    let hmac_result = cr_client
-        .challenge_response_hmac(challenge.as_bytes(), config)
-        .unwrap();
-
-    // Just for debug, lets check the hex
-    let v: &[u8] = hmac_result.deref();
-    let hex_string = hex::encode(v);
-
-    println!("{}", hex_string);
-}
-```
+## Examples
 
-### Configure Yubikey (HMAC-SHA1 mode)
-
-Note, please read about the [initial configuration](https://wiki.archlinux.org/index.php/yubikey#Initial_configuration)
-Alternatively you can configure the yubikey with the official [Yubikey Personalization GUI](https://developers.yubico.com/yubikey-personalization-gui/).
-
-```rust,ignore
-extern crate challenge_response;
-extern crate rand;
-
-use challenge_response::config::{Command, Config};
-use challenge_response::configure::DeviceModeConfig;
-use challenge_response::hmacmode::{
-    HmacKey, HmacSecret, HMAC_SECRET_SIZE,
-};
-use challenge_response::ChallengeResponse;
-use rand::distr::Alphanumeric;
-use rand::{rng, RngExt};
-
-fn main() {
-    let mut cr_client = match ChallengeResponse::new() {
-        Ok(y) => y,
-        Err(e) => {
-            eprintln!("{}", e.to_string());
-            return;
-        }
-    };
-
-    let device = match cr_client.find_device() {
-        Ok(d) => d,
-        Err(e) => {
-            eprintln!("Device not found: {}", e.to_string());
-            return;
-        }
-    };
-
-    println!(
-        "Vendor ID: {:?} Product ID {:?}",
-        device.vendor_id, device.product_id
-    );
-
-    let config = Config::new_from(device)
-        .set_command(Command::Configuration2);
-
-    let mut rng = rng();
-
-    // Used rand here, but you can set your own secret:
-    // let secret: &HmacSecret = b"my_awesome_secret_20";
-    let secret: Vec<u8> = rng
-        .sample_iter(&Alphanumeric)
-        .take(HMAC_SECRET_SIZE)
-        .collect();
-    let hmac_key: HmacKey = HmacKey::from_slice(&secret);
-
-    let mut device_config = DeviceModeConfig::default();
-    device_config.challenge_response_hmac(&hmac_key, false, false);
-
-    if let Err(err) =
-        cr_client.write_config(config, &mut device_config)
-    {
-        println!("{:?}", err);
-    } else {
-        println!("Device configured");
-    }
-}
-```
+Code examples for performing a challenge-response (both HMAC and OTP) as well as configuring a device can be found in the [examples/](./examples/) directory.
 
 ## Credits