From 3b0dadc28bb1d8b9849243fa9114603303f149ba Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 17 May 2015 17:28:18 +0200
Subject: add functions for conversion from json to rsa public key/signature
 for symmetry, testing, etc.

---
 src/util/json.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 70 insertions(+), 14 deletions(-)

(limited to 'src/util')

diff --git a/src/util/json.c b/src/util/json.c
index 3d702b7be..34e41e0d7 100644
--- a/src/util/json.c
+++ b/src/util/json.c
@@ -152,6 +152,76 @@ TALER_json_from_rsa_public_key (struct GNUNET_CRYPTO_rsa_PublicKey *pk)
 }
 
 
+/**
+ * Convert JSON to RSA public key.
+ *
+ * @param pk JSON encoding to convert 
+ * @return corresponding public key
+ */
+struct GNUNET_CRYPTO_rsa_PublicKey *
+TALER_json_to_rsa_public_key (json_t *json)
+{
+  const char *enc;
+  char *buf;
+  size_t len;
+  size_t buf_len;
+  struct GNUNET_CRYPTO_rsa_PublicKey *pk;
+
+  buf = NULL;
+  EXITIF (NULL == (enc = json_string_value (json)));
+  len = strlen (enc);
+  buf_len =  (len * 5) / 8;
+  buf = GNUNET_malloc (buf_len);
+  EXITIF (GNUNET_OK != 
+	  GNUNET_STRINGS_string_to_data (enc, 
+					 len, 
+					 buf, 
+					 buf_len));
+  EXITIF (NULL == (pk = GNUNET_CRYPTO_rsa_public_key_decode (buf,
+							     buf_len)));
+  GNUNET_free (buf);
+  return pk;
+ EXITIF_exit:
+  GNUNET_free_non_null (buf);
+  return NULL;
+}
+
+
+/**
+ * Convert JSON to RSA signature.
+ *
+ * @param pk JSON encoding to convert 
+ * @return corresponding signature
+ */
+struct GNUNET_CRYPTO_rsa_Signature *
+TALER_json_to_rsa_signature (json_t *json)
+{
+  const char *enc;
+  char *buf;
+  size_t len;
+  size_t buf_len;
+  struct GNUNET_CRYPTO_rsa_Signature *sig;
+
+  buf = NULL;
+  EXITIF (NULL == (enc = json_string_value (json)));
+  len = strlen (enc);
+  buf_len =  (len * 5) / 8;
+  buf = GNUNET_malloc (buf_len);
+  EXITIF (GNUNET_OK != 
+	  GNUNET_STRINGS_string_to_data (enc, 
+					 len, 
+					 buf, 
+					 buf_len));
+  EXITIF (NULL == (sig = GNUNET_CRYPTO_rsa_signature_decode (buf,
+							     buf_len)));
+  GNUNET_free (buf);
+  return sig;
+ EXITIF_exit:
+  GNUNET_free_non_null (buf);
+  return NULL;
+}
+
+
 /**
  * Convert RSA signature to JSON.
  *
@@ -196,20 +266,6 @@ TALER_json_from_data (const void *data,
 }
 
 
-/**
- * Convert binary hash to a JSON string with the base32crockford
- * encoding.
- *
- * @param hc binary data
- * @return json string that encodes @a hc
- */
-json_t *
-TALER_json_from_hash (const struct GNUNET_HashCode *hc)
-{
-  return TALER_json_from_data (hc, sizeof (struct GNUNET_HashCode));
-}
-
-
 /**
  * Parse given JSON object to Amount
  *
-- 
cgit v1.2.3