add token issue sig helper

2 files changed, 21 insertions, 1 deletions

diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index bd7164ca5..429cf1cc0 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -5961,7 +5961,7 @@ struct TALER_TokenUseSignature
  */
 struct TALER_TokenIssueSignature
 {
-  struct GNUNET_CRYPTO_UnblindedSignature signature;
+  struct GNUNET_CRYPTO_UnblindedSignature *signature;
 };
 
 /**
@@ -5972,4 +5972,12 @@ struct TALER_TokenIssueBlindSignature
   struct GNUNET_CRYPTO_BlindedSignature signature;
 };
 
+/**
+ * Free internals of @a issue_sig, but not @a issue_sig itself.
+ *
+ * @param[in] issue_sig signature to free
+ */
+void
+TALER_token_issue_sig_free (struct TALER_TokenIssueSignature *issue_sig);
+
 #endif
diff --git a/src/include/taler_json_lib.h b/src/include/taler_json_lib.h
index 98e565f0c..dad493cb6 100644
--- a/src/include/taler_json_lib.h
+++ b/src/include/taler_json_lib.h
@@ -588,6 +588,18 @@ TALER_JSON_spec_i18n_str (const char *name,
 
 
 /**
+ * Generate line in parser specification for a
+ * token issue signature.
+ *
+ * @param field name of the field
+ * @param[out] sig the signature to initialize
+ * @return corresponding field spec
+ */
+struct GNUNET_JSON_Specification
+TALER_JSON_spec_token_issue_sig (const char *field,
+                                 struct TALER_TokenIssueSignature *sig);
+
+/**
  * Hash a JSON for binary signing.
  *
  * See https://tools.ietf.org/html/draft-rundgren-json-canonicalization-scheme-15