Integrating http://code.google.com/p/gnupg-ecc/source/detail?r=15 .

The following works:
   gpg2 --gen-key (ECC)
   gpg2 --list-keys
   gpg2 --list-packets ~/.gnupg/pubring.gpg
   gpg2 --list-packets <private key from http://sites.google.com/site/brainhub/pgpecckeys>

ECDH doesn't work yet as the code must be re-written to adjust for gpg-agent refactoring.

kbx/keybox-openpgp.c

@@ -186,7 +186,7 @@ next_packet (unsigned char const **bufptr, size_t *buflen,
 }
 
 
-/* Parse a key packet and store the ionformation in KI. */
+/* Parse a key packet and store the information in KI. */
 static gpg_error_t
 parse_key (const unsigned char *data, size_t datalen,
            struct _keybox_openpgp_key_info *ki)
@@ -243,6 +243,11 @@ parse_key (const unsigned char *data, size_t datalen,
     case 17: /* DSA */
       npkey = 4;
       break;
+    case 18: /* ECDH */
+      npkey = 3;
+    case 19: /* ECDSA */
+      npkey = 2;
+      break;
     default: /* Unknown algorithm. */
       return gpg_error (GPG_ERR_UNKNOWN_ALGORITHM);
     }