70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2003-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
|
||
|
|
* Redistribution and modifications are permitted subject to BSD license.
|
||
|
|
*/
|
||
|
|
#ifndef _DER_ENCODER_H_
|
||
|
|
#define _DER_ENCODER_H_
|
||
|
|
|
||
|
|
#include <asn_application.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct asn_TYPE_descriptor_s; /* Forward declaration */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The DER encoder of any type. May be invoked by the application.
|
||
|
|
* Produces DER- and BER-compliant encoding. (DER is a subset of BER).
|
||
|
|
*
|
||
|
|
* NOTE: Use the ber_decode() function (ber_decoder.h) to decode data
|
||
|
|
* produced by der_encode().
|
||
|
|
*/
|
||
|
|
asn_enc_rval_t der_encode(const struct asn_TYPE_descriptor_s *type_descriptor,
|
||
|
|
const void *struct_ptr, /* Structure to be encoded */
|
||
|
|
asn_app_consume_bytes_f *consume_bytes_cb,
|
||
|
|
void *app_key /* Arbitrary callback argument */
|
||
|
|
);
|
||
|
|
|
||
|
|
/* A variant of der_encode() which encodes data into the pre-allocated buffer */
|
||
|
|
asn_enc_rval_t der_encode_to_buffer(
|
||
|
|
const struct asn_TYPE_descriptor_s *type_descriptor,
|
||
|
|
const void *struct_ptr, /* Structure to be encoded */
|
||
|
|
void *buffer, /* Pre-allocated buffer */
|
||
|
|
size_t buffer_size /* Initial buffer size (maximum) */
|
||
|
|
);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Type of the generic DER encoder.
|
||
|
|
*/
|
||
|
|
typedef asn_enc_rval_t(der_type_encoder_f)(
|
||
|
|
const struct asn_TYPE_descriptor_s *type_descriptor,
|
||
|
|
const void *struct_ptr, /* Structure to be encoded */
|
||
|
|
int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
|
||
|
|
ber_tlv_tag_t tag, asn_app_consume_bytes_f *consume_bytes_cb, /* Callback */
|
||
|
|
void *app_key /* Arbitrary callback argument */
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
/*******************************
|
||
|
|
* INTERNALLY USEFUL FUNCTIONS *
|
||
|
|
*******************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Write out leading TL[v] sequence according to the type definition.
|
||
|
|
*/
|
||
|
|
ssize_t der_write_tags(const struct asn_TYPE_descriptor_s *type_descriptor,
|
||
|
|
size_t struct_length,
|
||
|
|
int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
|
||
|
|
int last_tag_form, /* {0,!0}: prim, constructed */
|
||
|
|
ber_tlv_tag_t tag,
|
||
|
|
asn_app_consume_bytes_f *consume_bytes_cb,
|
||
|
|
void *app_key);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* _DER_ENCODER_H_ */
|