coap_asn1_internal.h

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/*
 * coap_asn1_internal.h -- ASN.1 functions for libcoap
 *
 * Copyright (C) 2020-2025 Jon Shallow <supjps-libcoap@jpshallow.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * This file is part of the CoAP library libcoap. Please see README for terms
 * of use.
 */

 
#ifndef COAP_ASN1_INTERNAL_H_
#define COAP_ASN1_INTERNAL_H_
 
#include "coap_internal.h"

 
typedef enum {
  COAP_ASN1_FAIL = -1,
  COAP_ASN1_NONE = 0,
  COAP_ASN1_INTEGER = 2,
  COAP_ASN1_BITSTRING = 3,
  COAP_ASN1_OCTETSTRING = 4,
  COAP_ASN1_IDENTIFIER = 6,
} coap_asn1_tag_t;

typedef int (*asn1_validate)(const uint8_t *data, size_t size);

size_t asn1_len(const uint8_t **ptr, size_t *plen);

coap_asn1_tag_t asn1_tag_c(const uint8_t **ptr, size_t *plen, int *constructed, int *cls);

coap_binary_t *get_asn1_tag(coap_asn1_tag_t ltag, const uint8_t *ptr,
                            size_t tlen, asn1_validate validate);

coap_binary_t *get_asn1_spki(const uint8_t *data, size_t size);

 
#endif /* COAP_ASN1_INTERNAL_H_ */