base64.h File Reference

RFC 1521 base64 encoding/decoding. More...

#include <stddef.h>

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Functions
int	osmo_base64_encode (unsigned char *dst, size_t dlen, size_t *olen, const unsigned char *src, size_t slen)
	Encode a buffer into base64 format. More...
int	osmo_base64_decode (unsigned char *dst, size_t dlen, size_t *olen, const unsigned char *src, size_t slen)
	Decode a base64-formatted buffer. More...

Detailed Description

RFC 1521 base64 encoding/decoding.

Copyright (C) 2006-2015, ARM Limited, All Rights Reserved

This file is part of mbed TLS (https://tls.mbed.org)

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.

Function Documentation

osmo_base64_decode()

int osmo_base64_decode	(	unsigned char *	dst,
		size_t	dlen,
		size_t *	olen,
		const unsigned char *	src,
		size_t	slen
	)

Decode a base64-formatted buffer.

Parameters

dst	destination buffer (can be NULL for checking size)
dlen	size of the destination buffer
olen	number of bytes written
src	source buffer
slen	amount of data to be decoded

Returns

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

References base64_dec_map, n, and x.

osmo_base64_encode()

int osmo_base64_encode	(	unsigned char *	dst,
		size_t	dlen,
		size_t *	olen,
		const unsigned char *	src,
		size_t	slen
	)

Encode a buffer into base64 format.

Parameters

dst	destination buffer
dlen	size of the destination buffer
olen	number of bytes written
src	source buffer
slen	amount of data to be encoded

Returns

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.

Note

Call this function with dlen = 0 to obtain the required buffer size in *olen

References base64_enc_map, and n.