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/**
* \file base64.h
*
* Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org>
* All rights reserved.
*
* Joined copyright on original XySSL code with: Christophe Devine
*
* 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.
*/
/* $Cambridge: exim/src/src/pdkim/base64.h,v 1.3 2009/12/07 13:05:07 tom Exp $ */
#ifndef POLARSSL_BASE64_H
#define POLARSSL_BASE64_H
#define POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL 0x0010
#define POLARSSL_ERR_BASE64_INVALID_CHARACTER 0x0012
#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, int *dlen,
unsigned char *src, int slen );
/**
* \brief Decode a base64-formatted buffer
*
* \param dst destination buffer
* \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_DATA 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 *dlen = 0 to obtain the
* required buffer size in *dlen
*/
int base64_decode( unsigned char *dst, int *dlen,
unsigned char *src, int slen );
#ifdef __cplusplus
}
#endif
#endif /* base64.h */
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