oath_base32_encode(3)

NAME
oath_base32_encode - API function

SYNOPSIS
#include <oath.h>

int oath_base32_encode(const char * in, size_t inlen, char ** out, size_t * outlen);

ARGUMENTS

const char * in
    input string with binary data of length inlen

size_t inlen
    length of input data in

char ** out
    pointer to newly allocated output string of length outlen, or NULL

size_t * outlen
    pointer to output variable holding length of out, or NULL

DESCRIPTION
Encode binary data into a string with base32 data. The in parameter should contain inlen bytes of data to encode. The function allocates a new string in *out to hold the encoded data, and sets *outlen to the length of the data. The output string *out is zero-terminated (ASCII NUL), but the NUL is not counted in *outlen. If out is NULL, then *outlen will be set to what would have been the length of *out on successful encoding. If the caller is not interested in knowing the length of the output data out, then outlen may be set to NULL. It is permitted but useless to have both out and outlen NULL.

RETURNS
On success OATH_OK (zero) is returned, OATH_BASE32_OVERFLOW is returned if the output would be too large to store, and OATH_MALLOC_ERROR is returned on memory allocation errors.

SINCE
1.12.0

REPORTING BUGS
Report bugs to <oath-toolkit-help@nongnu.org>. liboath home page: https://oath-toolkit.codeberg.page/ General help using GNU software: http://www.gnu.org/gethelp/

COPYRIGHT
Copyright © 2009-2026 Simon Josefsson.
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.