base64.h File Reference

#include <stddef.h>

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Functions
size_t	base64 (const char *signed_data, size_t len_data, char *res, size_t res_len)
	Implementation of base64 algorithm for binaries in general. More...
size_t	base64_str (const char *s, char *res, size_t res_len)
	Implementation of base64 algorithm for strings. More...
char *	open_and_read (const char *path, size_t *file_size_out)
	Open and read files. More...
char *	base64_alloc (const char *data, size_t size, size_t *res_size_out)
	Allocates memory and applies base64 algorithm. More...
char *	base64_from_path (const char *path, size_t *res_size_out)
	Uses open_and_read() and base64_alloc() to perform base64 algorithm. More...

Function Documentation

base64()

size_t base64	(	const char *	signed_data,
		size_t	len_data,
		char *	res,
		size_t	res_len
	)

Implementation of base64 algorithm for binaries in general.

Binary-to-text encoding into a set of 64 unique characters. Dource is taken 6 bits at a time, in this group of 6 is mapped to one of 64 unique characters. See: https://en.wikipedia.org/wiki/Base64

Parameters

data	Pointer to the binary to encode.
len_data	Length of binary to encode.
res	Pointer to the result.
res_len	Max-size of result. Needs to be enough.

Returns

Size of final result. If > to res_len, you have you given enough space to res.

base64_alloc()

char * base64_alloc	(	const char *	data,
		size_t	size,
		size_t *	res_size_out
	)

Allocates memory and applies base64 algorithm.

Parameters

data	Pointer to the binary to encode.
size	Length of binary to encode.
res_size_out	Pointer to the size of result.

Returns

Pointer to the result. Does malloc()! So you should free later.

base64_from_path()

char * base64_from_path	(	const char *	path,
		size_t *	res_size_out
	)

Uses open_and_read() and base64_alloc() to perform base64 algorithm.

Parameters

path	Pointer to the binary to encode.
res_size_out	Pointer to the size of result.

Returns

Pointer to the result. Does malloc()! So you should free later.

base64_str()

size_t base64_str	(	const char *	s,
		char *	res,
		size_t	res_len
	)

Implementation of base64 algorithm for strings.

Just gets the data length by using strlen().

Parameters

data	Pointer to the binary to encode.
res	Pointer to the result.
res_len	Max-size of result. Needs to be enough.

Returns

Size of final result. If > to res_len, you have you given enough space to res.

open_and_read()

char * open_and_read	(	const char *	path,
		size_t *	file_size_out
	)

Open and read files.

Deals with errors and allocates required size.

Parameters

path	Pointer to the file name.
file_size_out	Pointer to the size of result.

Returns

Pointer to the result. Does malloc()! So you should free later.