mbedtls/include/mbedtls/base64.h
Bence Szépkúti a2947ac7bb Update copyright notices to use Linux Foundation guidance
As a result, the copyright of contributors other than Arm is now
acknowledged, and the years of publishing are no longer tracked in the
source files.

Also remove the now-redundant lines declaring that the files are part of
MbedTLS.

This commit was generated using the following script:

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Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-08-19 16:37:36 +02:00

124 lines
4.1 KiB
C

/**
* \file base64.h
*
* \brief RFC 1521 base64 encoding/decoding
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*
* This file is provided under the Apache License 2.0, or the
* GNU General Public License v2.0 or later.
*
* **********
* Apache License 2.0:
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* **********
*
* **********
* GNU General Public License v2.0 or later:
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* **********
*/
#ifndef MBEDTLS_BASE64_H
#define MBEDTLS_BASE64_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
#define MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL -0x002A /**< Output buffer too small. */
#define MBEDTLS_ERR_BASE64_INVALID_CHARACTER -0x002C /**< Invalid character in input. */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encode a buffer into base64 format
*
* \param dst destination buffer
* \param dlen size of the destination buffer
* \param olen number of bytes written
* \param src source buffer
* \param slen amount of data to be encoded
*
* \return 0 if successful, or MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL.
* *olen is always updated to reflect the amount
* of data that has (or would have) been written.
* If that length cannot be represented, then no data is
* written to the buffer and *olen is set to the maximum
* length representable as a size_t.
*
* \note Call this function with dlen = 0 to obtain the
* required buffer size in *olen
*/
int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,
const unsigned char *src, size_t slen );
/**
* \brief Decode a base64-formatted buffer
*
* \param dst destination buffer (can be NULL for checking size)
* \param dlen size of the destination buffer
* \param olen number of bytes written
* \param src source buffer
* \param slen amount of data to be decoded
*
* \return 0 if successful, MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL, or
* MBEDTLS_ERR_BASE64_INVALID_CHARACTER if the input data is
* not correct. *olen is always updated to reflect the amount
* of data that has (or would have) been written.
*
* \note Call this function with *dst = NULL or dlen = 0 to obtain
* the required buffer size in *olen
*/
int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,
const unsigned char *src, size_t slen );
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if the test failed
*/
int mbedtls_base64_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
#endif /* base64.h */