/usr/include/polarssl/base64.h is in libpolarssl-dev 1.3.9-2.1+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | /**
* \file base64.h
*
* \brief RFC 1521 base64 encoding/decoding
*
* Copyright (C) 2006-2013, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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 POLARSSL_BASE64_H
#define POLARSSL_BASE64_H
#include <string.h>
#define POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL -0x002A /**< Output buffer too small. */
#define POLARSSL_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 buffer
* \param src source buffer
* \param slen amount of data to be encoded
*
* \return 0 if successful, or POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL.
* *dlen is always updated to reflect the amount
* of data that has (or would have) been written.
*
* \note Call this function with *dlen = 0 to obtain the
* required buffer size in *dlen
*/
int base64_encode( unsigned char *dst, size_t *dlen,
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 buffer
* \param src source buffer
* \param slen amount of data to be decoded
*
* \return 0 if successful, POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL, or
* POLARSSL_ERR_BASE64_INVALID_CHARACTER if the input data is
* not correct. *dlen 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 *dlen
*/
int base64_decode( unsigned char *dst, size_t *dlen,
const unsigned char *src, size_t slen );
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if the test failed
*/
int base64_self_test( int verbose );
#ifdef __cplusplus
}
#endif
#endif /* base64.h */
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