mirror of
https://github.com/polhenarejos/pico-keys-sdk
synced 2026-05-31 18:41:22 +02:00
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/*
|
|
* This file is part of the Pico Keys SDK distribution (https://github.com/polhenarejos/pico-keys-sdk).
|
|
* Copyright (c) 2022 Pol Henarejos.
|
|
*
|
|
* 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, version 3.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef _ASN1_H_
|
|
#define _ASN1_H_
|
|
|
|
#include <stdlib.h>
|
|
#if defined(PICO_PLATFORM)
|
|
#include "pico/stdlib.h"
|
|
#else
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#endif
|
|
|
|
typedef struct asn1_ctx {
|
|
uint8_t *data;
|
|
uint16_t len;
|
|
} asn1_ctx_t;
|
|
|
|
extern int asn1_ctx_init(uint8_t *, uint16_t, asn1_ctx_t *);
|
|
extern int asn1_ctx_clear(asn1_ctx_t *ctx);
|
|
extern uint16_t asn1_len(asn1_ctx_t *ctx);
|
|
extern uint32_t asn1_get_uint(asn1_ctx_t *ctx);
|
|
|
|
extern int walk_tlv(const asn1_ctx_t *ctxi,
|
|
uint8_t **p,
|
|
uint16_t *tag,
|
|
uint16_t *tag_len,
|
|
uint8_t **data);
|
|
extern uint8_t format_tlv_len(uint16_t len, uint8_t *out);
|
|
extern bool asn1_find_tag(const asn1_ctx_t *ctxi,
|
|
uint16_t itag,
|
|
asn1_ctx_t *ctxo);
|
|
extern uint16_t asn1_len_tag(uint16_t tag, uint16_t len);
|
|
|
|
#endif
|