Add Ed25519 verification to test

dufkan · Jul 4, 2021 · 103cf30 · 103cf30
1 parent f377923
commit 103cf30
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Showing 2 changed files with 18 additions and 3 deletions.
diff --git a/applet/build.gradle b/applet/build.gradle
@@ -51,6 +51,7 @@ dependencies {
  testImplementation 'junit:junit:4.12'
  testImplementation 'org.junit.jupiter:junit-jupiter-api:5.1.1'
  testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.1.1'
+ testCompile 'net.i2p.crypto:eddsa:0.3.0'
 
  testImplementation(group: 'com.klinec', name: 'javacard-tools', version: '1.0.4') {
  exclude group: "com.klinec", module: "jcardsim"

diff --git a/applet/src/test/java/tests/AppletTest.java b/applet/src/test/java/tests/AppletTest.java
@@ -1,14 +1,21 @@
 package tests;
 
 import applet.Consts;
-import applet.jcmathlib;
 import cz.muni.fi.crocs.rcard.client.CardManager;
 import cz.muni.fi.crocs.rcard.client.CardType;
+import net.i2p.crypto.eddsa.EdDSAPublicKey;
+import net.i2p.crypto.eddsa.spec.EdDSANamedCurveTable;
+import net.i2p.crypto.eddsa.spec.EdDSAParameterSpec;
+import net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec;
 import org.junit.Assert;
 import org.junit.jupiter.api.*;
+import net.i2p.crypto.eddsa.EdDSAEngine;
 
 import javax.smartcardio.CommandAPDU;
 import javax.smartcardio.ResponseAPDU;
+import java.security.MessageDigest;
+import java.security.PublicKey;
+import java.security.Signature;
 
 /**
  * Example test class for the applet
@@ -39,20 +46,21 @@ public void setUpMethod() throws Exception {
  public void tearDownMethod() throws Exception {
  }
 
- public void keygen(CardManager cm) throws Exception {
+ public byte[] keygen(CardManager cm) throws Exception {
  final CommandAPDU cmd = new CommandAPDU(Consts.CLA_ED25519, Consts.INS_KEYGEN,0, 0);
  final ResponseAPDU responseAPDU = cm.transmit(cmd);
  Assert.assertNotNull(responseAPDU);
  Assert.assertEquals(0x9000, responseAPDU.getSW());
  Assert.assertNotNull(responseAPDU.getBytes());
  Assert.assertEquals(32, responseAPDU.getData().length);
+ return responseAPDU.getData();
  }
 
  @Test
  public void keygen_and_sign() throws Exception {
  final CardManager cm = connect();
 
- keygen(cm);
+ byte[] pubkeyBytes = keygen(cm);
 
  byte[] data = new byte[32];
  for(int i = 0; i < data.length; ++i)
@@ -64,5 +72,11 @@ public void keygen_and_sign() throws Exception {
  Assert.assertEquals(0x9000, responseAPDU.getSW());
  Assert.assertNotNull(responseAPDU.getBytes());
  Assert.assertEquals(32 + 32, responseAPDU.getData().length);
+ EdDSAParameterSpec spec = EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.ED_25519);
+ Signature sgr = new EdDSAEngine(MessageDigest.getInstance(spec.getHashAlgorithm()));
+ PublicKey pubKey = new EdDSAPublicKey(new EdDSAPublicKeySpec(pubkeyBytes, spec));
+ sgr.initVerify(pubKey);
+ sgr.update(data);
+ Assert.assertTrue(sgr.verify(responseAPDU.getData()));
  }
 }