43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* This file is part of the Pico Keys SDK distribution (https://github.com/polhenarejos/pico-keys-sdk).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ASN1_H_
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#define _ASN1_H_
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#include <stdlib.h>
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#ifndef ENABLE_EMULATION
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#include "pico/stdlib.h"
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#else
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#include <stdint.h>
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#include <stdbool.h>
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#endif
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extern int walk_tlv(const uint8_t *cdata,
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size_t cdata_len,
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uint8_t **p,
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uint16_t *tag,
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size_t *tag_len,
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uint8_t **data);
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extern int format_tlv_len(size_t len, uint8_t *out);
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extern bool asn1_find_tag(const uint8_t *data,
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size_t data_len,
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uint16_t itag,
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size_t *tag_len,
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uint8_t **tag_data);
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extern size_t asn1_len_tag(uint16_t tag, size_t len);
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#endif
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