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/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Copyright (C) 2002-2008 Andreas Steffen
*
* Hochschule fuer Technik Rapperswil, Switzerland
*
* This program 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*/
/**
* @defgroup pkcs7 pkcs7
* @{ @ingroup crypto
*/
#ifndef PKCS7_H_
#define PKCS7_H_
typedef struct pkcs7_t pkcs7_t;
#include <library.h>
#include <credentials/certificates/x509.h>
#include <credentials/keys/private_key.h>
#include <crypto/pkcs9.h>
#include <crypto/crypters/crypter.h>
#include <utils/iterator.h>
/**
* PKCS#7 contentInfo object.
*/
struct pkcs7_t {
/**
* Check if the PKCS#7 contentType is data
*
* @return TRUE if the contentType is data
*/
bool (*is_data) (pkcs7_t *this);
/**
* Check if the PKCS#7 contentType is signedData
*
* @return TRUE if the contentType is signedData
*/
bool (*is_signedData) (pkcs7_t *this);
/**
* Check if the PKCS#7 contentType is envelopedData
*
* @return TRUE if the contentType is envelopedData
*/
bool (*is_envelopedData) (pkcs7_t *this);
/**
* Parse a PKCS#7 data content.
*
* @return TRUE if parsing was successful
*/
bool (*parse_data) (pkcs7_t *this);
/**
* Parse a PKCS#7 signedData content.
*
* @param cacert cacert used to verify the signature
* @return TRUE if parsing was successful
*/
bool (*parse_signedData) (pkcs7_t *this, x509_t *cacert);
/**
* Parse a PKCS#7 envelopedData content.
*
* @param serialNumber serialNumber of the request
* @param key private key used to decrypt the symmetric key
* @return TRUE if parsing was successful
*/
bool (*parse_envelopedData) (pkcs7_t *this, chunk_t serialNumber, private_key_t *key);
/**
* Returns the parsed data object
*
* @return chunk containing the data object
*/
chunk_t (*get_data) (pkcs7_t *this);
/**
* Returns the a DER-encoded contentInfo object
*
* @return chunk containing the contentInfo object
*/
chunk_t (*get_contentInfo) (pkcs7_t *this);
/**
* Create an iterator for the certificates.
*
* @return iterator for the certificates
*/
iterator_t *(*create_certificate_iterator) (pkcs7_t *this);
/**
* Add a certificate.
*
* @param cert certificate to be included
*/
void (*set_certificate) (pkcs7_t *this, x509_t *cert);
/**
* Add authenticated attributes.
*
* @param attributes attributes to be included
*/
void (*set_attributes) (pkcs7_t *this, pkcs9_t *attributes);
/**
* Build a data object
*
* @return TRUE if build was successful
*/
bool (*build_data) (pkcs7_t *this);
/**
* Build an envelopedData object
*
* @param cert receivers's certificate
* @param alg encryption algorithm
* @return TRUE if build was successful
*/
bool (*build_envelopedData) (pkcs7_t *this, x509_t *cert,
encryption_algorithm_t alg);
/**
* Build an signedData object
*
* @param key signer's private key
* @param alg digest algorithm used for signature
* @return TRUE if build was successful
*/
bool (*build_signedData) (pkcs7_t *this, private_key_t *key,
hash_algorithm_t alg);
/**
* Destroys the contentInfo object.
*/
void (*destroy) (pkcs7_t *this);
};
/**
* Read a PKCS#7 contentInfo object from a DER encoded chunk.
*
* @param chunk chunk containing DER encoded data
* @param level ASN.1 parsing start level
* @return created pkcs7_contentInfo object, or NULL if invalid.
*/
pkcs7_t *pkcs7_create_from_chunk(chunk_t chunk, u_int level);
/**
* Create a PKCS#7 contentInfo object
*
* @param data chunk containing data
* @return created pkcs7_contentInfo object.
*/
pkcs7_t *pkcs7_create_from_data(chunk_t data);
/**
* Read a X.509 certificate from a DER encoded file.
*
* @param filename file containing DER encoded data
* @param label label describing kind of PKCS#7 file
* @return created pkcs7_t object, or NULL if invalid.
*/
pkcs7_t *pkcs7_create_from_file(const char *filename, const char *label);
#endif /** PKCS7_H_ @}*/
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