added check for case where both halfs of the signature are short by 1.

Author: dghgit

pkix/src/main/java/org/bouncycastle/eac/operator/jcajce/JcaEACSignerBuilder.java

@@ -142,6 +142,12 @@ private static byte[] reencode(byte[] rawSign)
 
         byte[] ret;
         int len = max(rLen, sLen);
+        // TODO: ideally this would be based on the field length
+        // if both sides are short, len might be short
+        if ((len & 0x01) != 0)
+        {
+            len++;
+        }
 
         ret = new byte[len * 2];
         Arrays.fill(ret, (byte)0);