1 files changed, 53 insertions, 0 deletions
diff --git a/src/json/json.c b/src/json/json.c
new file mode 100644
index 000000000..da9e8b9f8
--- /dev/null
+++ b/src/json/json.c
@@ -0,0 +1,53 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014, 2015, 2016 GNUnet e.V.
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file json/json.c
+ * @brief helper functions for JSON processing using libjansson
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_util.h"
+#include "taler_json_lib.h"
+
+
+/**
+ * Hash a JSON for binary signing.
+ *
+ * @param[in] json some JSON value
+ * @param[out] hc resulting hash code
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
+ */
+int
+TALER_JSON_hash (const json_t *json,
+                 struct GNUNET_HashCode *hc)
+{
+  char *wire_enc;
+  size_t len;
+
+  if (NULL == (wire_enc = json_dumps (json,
+                                      JSON_COMPACT | JSON_SORT_KEYS)))
+    return GNUNET_SYSERR;
+  len = strlen (wire_enc) + 1;
+  GNUNET_CRYPTO_hash (wire_enc,
+                      len,
+                      hc);
+  free (wire_enc);
+  return GNUNET_OK;
+}
+
+
+/* End of json/json.c */