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/*
*
* basez.h
*
* Copyright (C) 2013, 2016 Milan Kupcevic
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
*
* Encodings per RFC 4648:
* base64 Base 64 Encoding
* base64url Base 64 Encoding with URL and Filename Safe Alphabet
* base32 Base 32 Encoding
* base32hex Base 32 Encoding with Extended Hex Alphabet
* base16 Base 16 Encoding
*
*/
#ifndef BASEZ_H
#define BASEZ_H
void /* upper case encode */
encode_base16u (
const unsigned char *byte_in,
unsigned char *buffer_out); /* 2 bytes */
void /* lower case encode */
encode_base16l (
const unsigned char *byte_in,
unsigned char *buffer_out); /* 2 bytes */
int /* 1 - OK; 0 - invalid input */
decode_base16(
const unsigned char *buffer_in, /* 2 bytes */
unsigned char *buffer_out); /* a decoded byte */
void /* upper case encode */
encode_base32u(
const unsigned char *buffer_in, /* 5 bytes */
const int bytes_to_encode, /* >= 1 and <= 5 */
unsigned char *buffer_out); /* 8 bytes */
void /* lower case encode */
encode_base32l(
const unsigned char *buffer_in, /* 5 bytes */
const int bytes_to_encode, /* >= 1 and <= 5 */
unsigned char *buffer_out); /* 8 bytes */
int /* 0 - invalid input; >= 1 and <= 5 - number of decoded bytes */
decode_base32(
const unsigned char *buffer_in, /* 8 bytes */
unsigned char *buffer_out); /* 5 bytes */
void /* upper case encode */
encode_base32hexu(
const unsigned char *buffer_in, /* 5 bytes */
const int bytes_to_encode, /* >= 1 and <= 5 */
unsigned char *buffer_out); /* 8 bytes */
void /* lower case encode */
encode_base32hexl(
const unsigned char *buffer_in, /* 5 bytes */
const int bytes_to_encode, /* >= 1 and <= 5 */
unsigned char *buffer_out); /* 8 bytes */
int /* 0 - invalid input; >= 1 and <= 5 - number of decoded bytes */
decode_base32hex(
const unsigned char *buffer_in, /* 8 bytes */
unsigned char *buffer_out); /* 5 bytes */
void
encode_base64(
const unsigned char *buffer_in, /* 3 bytes */
const int bytes_to_encode, /* >= 1 and <= 3 */
unsigned char *buffer_out); /* 4 bytes */
int /* 0 - invalid input; >= 1 and <= 3 - number of decoded bytes */
decode_base64(
const unsigned char *buffer_in, /* 4 bytes */
unsigned char *buffer_out); /* 3 bytes */
void
encode_base64url(
const unsigned char *buffer_in, /* 3 bytes */
const int bytes_to_encode, /* >= 1 and <= 3 */
unsigned char *buffer_out); /* 4 bytes */
int /* 0 - invalid input; >= 1 and <= 3 - number of decoded bytes */
decode_base64url(
const unsigned char *buffer_in, /* 4 bytes */
unsigned char *buffer_out); /* 3 bytes */
#endif
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