diff --git a/lib/krb5/auth_context.c b/lib/krb5/auth_context.c
index 142200cf9..740a9a63a 100644
--- a/lib/krb5/auth_context.c
+++ b/lib/krb5/auth_context.c
@@ -67,6 +67,7 @@ krb5_auth_con_init(krb5_context context,
     p->remote_port    = 0;
     p->keytype        = KRB5_ENCTYPE_NULL;
     p->cksumtype      = CKSUMTYPE_NONE;
+    p->auth_data      = NULL;
     *auth_context     = p;
     return 0;
 }
@@ -404,6 +405,28 @@ krb5_auth_con_getkeytype (krb5_context context,
     return 0;
 }
 
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_auth_con_add_AuthorizationData(krb5_context context,
+				    krb5_auth_context auth_context,
+				    int type,
+				    krb5_data *data)
+{
+    AuthorizationDataElement el;
+
+    if (auth_context->auth_data == NULL) {
+	auth_context->auth_data = calloc(1, sizeof(*auth_context->auth_data));
+	if (auth_context->auth_data == NULL)
+	    return krb5_enomem(context);
+    }
+    el.ad_type = type;
+    el.ad_data.data = data->data;
+    el.ad_data.length = data->length;
+
+    return add_AuthorizationData(auth_context->auth_data, &el);
+}
+
+
+
 #if 0
 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
 krb5_auth_con_setenctype(krb5_context context,