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https://github.com/RfidResearchGroup/proxmark3.git
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92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/**
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* \file base64.h
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*
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* \brief RFC 1521 base64 encoding/decoding
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*/
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/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: GPL-2.0
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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; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_BASE64_H
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#define MBEDTLS_BASE64_H
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#include <stddef.h>
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#define MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL -0x002A /**< Output buffer too small. */
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#define MBEDTLS_ERR_BASE64_INVALID_CHARACTER -0x002C /**< Invalid character in input. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Encode a buffer into base64 format
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*
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* \param dst destination buffer
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* \param dlen size of the destination buffer
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* \param olen number of bytes written
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* \param src source buffer
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* \param slen amount of data to be encoded
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*
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* \return 0 if successful, or MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL.
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* *olen is always updated to reflect the amount
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* of data that has (or would have) been written.
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* If that length cannot be represented, then no data is
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* written to the buffer and *olen is set to the maximum
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* length representable as a size_t.
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*
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* \note Call this function with dlen = 0 to obtain the
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* required buffer size in *olen
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*/
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int mbedtls_base64_encode(unsigned char *dst, size_t dlen, size_t *olen,
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const unsigned char *src, size_t slen);
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/**
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* \brief Decode a base64-formatted buffer
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*
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* \param dst destination buffer (can be NULL for checking size)
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* \param dlen size of the destination buffer
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* \param olen number of bytes written
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* \param src source buffer
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* \param slen amount of data to be decoded
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*
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* \return 0 if successful, MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL, or
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* MBEDTLS_ERR_BASE64_INVALID_CHARACTER if the input data is
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* not correct. *olen is always updated to reflect the amount
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* of data that has (or would have) been written.
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*
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* \note Call this function with *dst = NULL or dlen = 0 to obtain
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* the required buffer size in *olen
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*/
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int mbedtls_base64_decode(unsigned char *dst, size_t dlen, size_t *olen,
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const unsigned char *src, size_t slen);
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int mbedtls_base64_self_test(int verbose);
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#ifdef __cplusplus
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}
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#endif
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#endif /* base64.h */
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