From 39aa2c597e2075c19dd455cafad3c6791c2a729a Mon Sep 17 00:00:00 2001
From: zzz <zzz@mail.i2p>
Date: Wed, 26 Sep 2018 14:04:36 +0000
Subject: [PATCH] Utils: Enhance exception message for ticket #2296

---
 core/java/src/net/i2p/crypto/SigUtil.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/java/src/net/i2p/crypto/SigUtil.java b/core/java/src/net/i2p/crypto/SigUtil.java
index 822f57f4c..32f9f9c6b 100644
--- a/core/java/src/net/i2p/crypto/SigUtil.java
+++ b/core/java/src/net/i2p/crypto/SigUtil.java
@@ -190,7 +190,7 @@ public final class SigUtil {
             else if (spec.equals(SigType.ECDSA_SHA512_P521.getParams()))
                 type = SigType.ECDSA_SHA512_P521;
             else
-                throw new IllegalArgumentException("Unknown EC type");
+                throw new IllegalArgumentException("Unknown EC type: " + pk.getClass() + " spec: " + spec.getClass());
             return fromJavaKey(k, type);
         }
         if (pk instanceof EdDSAPrivateKey) {