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/*
This file is part of TALER
Copyright (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
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