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diff --git a/src/backend/taler_json_lib.h b/src/backend/taler_json_lib.h
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+/*
+  This file is part of TALER
+  Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
+
+  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 include/taler_json_lib.h
+ * @brief helper functions for JSON processing using libjansson
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+#ifndef TALER_json_LIB_H_
+#define TALER_json_LIB_H_
+
+#include <jansson.h>
+
+/**
+ * Print JSON parsing related error information
+ */
+#define TALER_json_warn(error)                                         \
+  GNUNET_log (GNUNET_ERROR_TYPE_WARNING,                                \
+              "JSON parsing failed at %s:%u: %s (%s)\n",                  \
+              __FILE__, __LINE__, error.text, error.source)
+
+
+/**
+ * Convert a TALER amount to a JSON object.
+ *
+ * @param amount the amount
+ * @return a json object describing the amount
+ */
+json_t *
+TALER_json_from_amount (const struct TALER_Amount *amount);
+
+
+/**
+ * Convert absolute timestamp to a json string.
+ *
+ * @param stamp the time stamp
+ * @return a json string with the timestamp in @a stamp
+ */
+json_t *
+TALER_json_from_abs (struct GNUNET_TIME_Absolute stamp);
+
+
+/**
+ * Convert a signature (with purpose) to a JSON object representation.
+ *
+ * @param purpose purpose of the signature
+ * @param signature the signature
+ * @return the JSON reporesentation of the signature with purpose
+ */
+json_t *
+TALER_json_from_eddsa_sig (const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose,
+                           const struct GNUNET_CRYPTO_EddsaSignature *signature);
+
+
+/**
+ * Convert RSA public key to JSON.
+ *
+ * @param pk public key to convert
+ * @return corresponding JSON encoding
+ */
+json_t *
+TALER_json_from_rsa_public_key (struct GNUNET_CRYPTO_rsa_PublicKey *pk);
+
+
+/**
+ * Convert RSA signature to JSON.
+ *
+ * @param sig signature to convert
+ * @return corresponding JSON encoding
+ */
+json_t *
+TALER_json_from_rsa_signature (struct GNUNET_CRYPTO_rsa_Signature *sig);
+
+
+/**
+ * Convert binary data to a JSON string
+ * with the base32crockford encoding.
+ *
+ * @param data binary data
+ * @param size size of @a data in bytes
+ * @return json string that encodes @a data
+ */
+json_t *
+TALER_json_from_data (const void *data, size_t size);
+
+
+/**
+ * Parse given JSON object to Amount
+ *
+ * @param json the json object representing Amount
+ * @param[out] r_amount where the amount has to be written
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+int
+TALER_json_to_amount (json_t *json,
+                      struct TALER_Amount *r_amount);
+
+/**
+ * Parse given JSON object to absolute time.
+ *
+ * @param json the json object representing absolute time in seconds
+ * @param[out] abs where the time has to be written
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+int
+TALER_json_to_abs (json_t *json,
+                   struct GNUNET_TIME_Absolute *abs);
+
+/**
+ * Parse given JSON object to data
+ *
+ * @param json the json object representing data
+ * @param out the pointer to hold the parsed data.
+ * @param out_size the size of @a out
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+int
+TALER_json_to_data (json_t *json,
+                    void *out,
+                    size_t out_size);
+
+
+/**
+ * Convert JSON to RSA public key.
+ *
+ * @param json JSON encoding to convert
+ * @return corresponding public key
+ */
+struct GNUNET_CRYPTO_rsa_PublicKey *
+TALER_json_to_rsa_public_key (json_t *json);
+
+
+/**
+ * Convert JSON to RSA signature.
+ *
+ * @param json JSON encoding to convert
+ * @return corresponding signature
+ */
+struct GNUNET_CRYPTO_rsa_Signature *
+TALER_json_to_rsa_signature (json_t *json);
+
+
+/**
+ * Hash a JSON for binary signing.
+ *
+ * @param[in] json some JSON value to hash
+ * @param[out] hc resulting hash code
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
+ */
+int
+TALER_hash_json (json_t *json,
+                 struct GNUNET_HashCode *hc);
+
+
+/**
+ * Check if the given wire format JSON object is correctly formatted
+ *
+ * @param type the type of the wire format
+ * @param wire the JSON wire format object
+ * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
+ */
+int
+TALER_json_validate_wireformat (const char *type,
+                                const json_t *wire);
+
+
+#endif /* TALER_json_LIB_H_ */
+
+/* End of taler_json_lib.h */