1 files changed, 70 insertions, 0 deletions
diff --git a/sshlib/src/test/java/com/trilead/ssh2/signature/Ed25519VerifyTest.java b/sshlib/src/test/java/com/trilead/ssh2/signature/Ed25519VerifyTest.java
new file mode 100644
index 0000000..f256f91
--- /dev/null
+++ b/sshlib/src/test/java/com/trilead/ssh2/signature/Ed25519VerifyTest.java
@@ -0,0 +1,70 @@
+package com.trilead.ssh2.signature;
+
+import com.trilead.ssh2.crypto.key.Ed25519PrivateKey;
+import com.trilead.ssh2.crypto.key.Ed25519PublicKey;
+import net.i2p.crypto.eddsa.spec.EdDSANamedCurveSpec;
+import net.i2p.crypto.eddsa.spec.EdDSANamedCurveTable;
+import net.i2p.crypto.eddsa.spec.EdDSAPrivateKeySpec;
+import org.junit.Test;
+
+import javax.xml.bind.DatatypeConverter;
+import java.security.MessageDigest;
+
+import static org.junit.Assert.*;
+
+/**
+ * Created by kenny on 1/24/16.
+ */
+public class Ed25519VerifyTest {
+	/* Test vectors from draft-josefsson-eddsa-ed25519-03 */
+	private static final byte[] SECRET_KEY = toByteArray("833fe62409237b9d62ec77587520911e9a759cec1d19755b7da901b96dca3d42");
+	private static final byte[] PUBLIC_KEY = toByteArray("ec172b93ad5e563bf4932c70e1245034c35467ef2efd4d64ebf819683467e2bf");
+	private static final byte[] MESSAGE = toByteArray("616263");
+	private static final byte[] SIGNATURE = toByteArray("dc2a4459e7369633a52b1bf277839a00201009a3efbf3ecb69bea2186c26b58909351fc9ac90b3ecfdfbc7c66431e0303dca179c138ac17ad9bef1177331a704");
+
+	private static byte[] toByteArray(String s) {
+		return DatatypeConverter.parseHexBinary(s);
+	}
+
+	@Test
+	public void verifies() throws Exception {
+		Ed25519PublicKey pubKey = Ed25519PublicKey.getInstance(PUBLIC_KEY);
+		MessageDigest md = MessageDigest.getInstance("SHA-512");
+		assertTrue(Ed25519Verify.verifySignature(md.digest(MESSAGE), SIGNATURE, pubKey));
+	}
+
+	@Test
+	public void noVerificationForInvalidData() throws Exception {
+		Ed25519PublicKey pubKey = Ed25519PublicKey.getInstance(PUBLIC_KEY);
+		MessageDigest md = MessageDigest.getInstance("SHA-512");
+		assertFalse(Ed25519Verify.verifySignature(md.digest(new byte[1]), SIGNATURE, pubKey));
+	}
+
+	@Test
+	public void signs() throws Exception {
+		Ed25519PrivateKey privKey = Ed25519PrivateKey.getInstance(SECRET_KEY);
+		MessageDigest md = MessageDigest.getInstance("SHA-512");
+		assertArrayEquals(SIGNATURE, Ed25519Verify.generateSignature(md.digest(MESSAGE), privKey));
+	}
+
+	@Test
+	public void publicKeyCalculatedCorrectly() throws Exception {
+		EdDSANamedCurveSpec spec = EdDSANamedCurveTable.getByName("ed25519-sha-512");
+		EdDSAPrivateKeySpec privKeySpec = new EdDSAPrivateKeySpec(SECRET_KEY, spec);
+		byte[] pubKeyBytes = privKeySpec.getA().toByteArray();
+		assertArrayEquals(PUBLIC_KEY, pubKeyBytes);
+	}
+
+	@Test
+	public void loopbackSuccess() throws Exception {
+		Ed25519PrivateKey privKey = Ed25519PrivateKey.getInstance(SECRET_KEY);
+		Ed25519PublicKey pubKey = Ed25519PublicKey.getInstance(PUBLIC_KEY);
+		MessageDigest md = MessageDigest.getInstance("SHA-512");
+
+		byte[] message = new byte[] { (byte) 0xA5, (byte) 0x5A };
+		byte[] digest = md.digest(message);
+
+		byte[] sig = Ed25519Verify.generateSignature(digest, privKey);
+		assertTrue(Ed25519Verify.verifySignature(digest, sig, pubKey));
+	}
+}
+\ No newline at end of file