--- a/src/ch/ethz/ssh2/channel/AuthAgentForwardThread.java	Tue Jul 29 18:50:35 2014 -0700
+++ b/src/ch/ethz/ssh2/channel/AuthAgentForwardThread.java	Tue Jul 29 20:23:00 2014 -0700
@@ -28,6 +28,7 @@
 import java.security.PublicKey;
 import java.security.SecureRandom;
 import java.security.interfaces.DSAPrivateKey;
+import java.security.interfaces.ECPrivateKey;
 import java.security.interfaces.RSAPrivateKey;
 import java.security.spec.DSAPrivateKeySpec;
 import java.security.spec.DSAPublicKeySpec;
@@ -460,11 +461,12 @@
             else if (privKey instanceof DSAPrivateKey) {
                 byte[] signature = DSASHA1Verify.generateSignature(challenge,
                                    (DSAPrivateKey) privKey, new SecureRandom());
-                response = DSASHA1Verify.encodeSSHDSASignature(signature);
+                response = DSASHA1Verify.encodeSSHDSASignature(signature, );
             }
             else if (privKey instanceof ECPrivateKey) {
+                ECPrivateKey pk = (ECPrivateKey) privKey;
                 byte[] signature = ECDSASHA2Verify.generateSignature(challenge,
-                                   (ECPrivateKey) privKey);
+                                   (ECPrivateKey) privKey, pk.getParams());
                 response = ECDSASHA2Verify.encodeSSHECDSASignature(signature);
             }
             else {