Add IDENTIFY CARD (#24)

* ident applet support * add identify card command * fix certificate class * make sure private key is 32 bytes * don't remove TLV header from signature * fix typo * use secure channel if open
2022-11-04 12:33:06 +01:00
parent 6c965f726a
commit 9fac06b19d
8 changed files with 274 additions and 7 deletions
@@ -0,0 +1,46 @@
+package im.status.keycard.applet;
+
+import im.status.keycard.io.APDUCommand;
+import im.status.keycard.io.APDUResponse;
+import im.status.keycard.io.CardChannel;
+
+import java.io.IOException;
+
+/**
+ * Command set for the Ident applet.
+ */
+public class IdentCommandSet {
+  private final CardChannel apduChannel;
+
+  /**
+   * Creates a IdentCommandSet using the given APDU Channel
+   * @param apduChannel APDU channel
+   */
+  public IdentCommandSet(CardChannel apduChannel) {
+    this.apduChannel = apduChannel;
+  }
+
+  /**
+   * Selects a Cash instance. The applet is assumed to have been installed with its default AID. The returned data is
+   * a public key which must be used to initialize the secure channel.
+   *
+   * @return the raw card response
+   * @throws IOException communication error
+   */
+  public APDUResponse select() throws IOException {
+    APDUCommand selectApplet = new APDUCommand(0x00, 0xA4, 4, 0, Identifiers.IDENT_INSTANCE_AID);
+    return apduChannel.send(selectApplet);
+  }
+
+  /**
+   * Sends a STORE DATA APDU.
+   *
+   * @param data the data to sign
+   * @return the raw card response
+   * @throws IOException communication error
+   */
+  public APDUResponse storeData(byte[] data) throws IOException {
+    APDUCommand sign = new APDUCommand(0x80, KeycardCommandSet.INS_STORE_DATA, 0x00, 0x00, data);
+    return apduChannel.send(sign);
+  }
+}