1 files changed, 137 insertions, 0 deletions
diff --git a/src/mint/key_io.h b/src/mint/key_io.h
new file mode 100644
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+++ b/src/mint/key_io.h
@@ -0,0 +1,137 @@
+/*
+  This file is part of TALER
+  (C) 2014 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 key_io.h
+ * @brief IO operations for the mint's private keys
+ * @author Florian Dold
+ * @author Benedikt Mueller
+ * @author Christian Grothoff
+ *
+ * TODO:
+ * - document better
+ */
+#ifndef KEY_IO_H
+#define KEY_IO_H
+
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_common.h>
+#include "taler_util.h"
+#include "taler_signatures.h"
+
+#define DIR_SIGNKEYS "signkeys"
+#define DIR_DENOMKEYS "denomkeys"
+
+/**
+ * On disk format used for a mint signing key.
+ * Includes the private key followed by the signed
+ * issue message.
+ */
+struct TALER_MINT_SignKeyIssuePriv
+{
+  struct GNUNET_CRYPTO_EddsaPrivateKey signkey_priv;
+  struct TALER_MINT_SignKeyIssue issue;
+};
+
+
+
+struct TALER_MINT_DenomKeyIssuePriv
+{
+  /**
+   * The private key of the denomination.  Will be NULL if the private key is
+   * not available.
+   */
+  struct GNUNET_CRYPTO_rsa_PrivateKey *denom_priv;
+
+  struct TALER_MINT_DenomKeyIssue issue;
+};
+
+
+
+
+/**
+ * Iterator for sign keys.
+ *
+ * @param cls closure
+ * @param ski the sign key issue
+ * @return #GNUNET_OK to continue to iterate,
+ *  #GNUNET_NO to stop iteration with no error,
+ *  #GNUNET_SYSERR to abort iteration with error!
+ */
+typedef int
+(*TALER_MINT_SignkeyIterator)(void *cls,
+                              const struct TALER_MINT_SignKeyIssuePriv *ski);
+
+/**
+ * Iterator for denomination keys.
+ *
+ * @param cls closure
+ * @param dki the denomination key issue
+ * @param alias coin alias
+ * @return #GNUNET_OK to continue to iterate,
+ *  #GNUNET_NO to stop iteration with no error,
+ *  #GNUNET_SYSERR to abort iteration with error!
+ */
+typedef int
+(*TALER_MINT_DenomkeyIterator)(void *cls,
+                               const char *alias,
+                               const struct TALER_MINT_DenomKeyIssuePriv *dki);
+
+
+
+/**
+ * FIXME
+ */
+int
+TALER_MINT_signkeys_iterate (const char *mint_base_dir,
+                             TALER_MINT_SignkeyIterator it, void *cls);
+
+
+/**
+ * FIXME
+ */
+int
+TALER_MINT_denomkeys_iterate (const char *mint_base_dir,
+                              TALER_MINT_DenomkeyIterator it, void *cls);
+
+
+/**
+ * Exports a denomination key to the given file
+ *
+ * @param filename the file where to write the denomination key
+ * @param dki the denomination key
+ * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure.
+ */
+int
+TALER_MINT_write_denom_key (const char *filename,
+                            const struct TALER_MINT_DenomKeyIssuePriv *dki);
+
+
+/**
+ * Import a denomination key from the given file
+ *
+ * @param filename the file to import the key from
+ * @param dki pointer to return the imported denomination key
+ * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
+ */
+int
+TALER_MINT_read_denom_key (const char *filename,
+                           struct TALER_MINT_DenomKeyIssuePriv *dki);
+
+
+
+
+
+#endif