1oath_base32_decode(3)               liboath              oath_base32_decode(3)
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NAME

6       oath_base32_decode - API function
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SYNOPSIS

9       #include <oath.h>
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11       int  oath_base32_decode(const  char  *  in,  size_t inlen, char ** out,
12       size_t * outlen);
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ARGUMENTS

15       const char * in
16                   input string with base32 encoded data of length inlen
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18       size_t inlen
19                   length of input base32 string in
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21       char ** out pointer to  output  variable  for  binary  data  of  length
22                   outlen, or NULL
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24       size_t * outlen
25                   pointer to output variable holding length of out, or NULL
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DESCRIPTION

28       Decode a base32 encoded string into binary data.
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30       Space  characters  are  ignored and pad characters are added if needed.
31       Non-base32 data are not ignored but instead will lead  to  an  OATH_IN‐
32       VALID_BASE32 error.
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34       The  in  parameter  should  contain inlen bytes of base32 encoded data.
35       The function allocates a new string in *out to hold the  decoded  data,
36       and sets *outlen to the length of the data.
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38       If  out  is  NULL, then *outlen will be set to what would have been the
39       length of *out on successful encoding.
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41       If the caller is not interested in knowing the  length  of  the  output
42       data out, then outlen may be set to NULL.
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44       It is permitted but useless to have both out and outlen NULL.
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RETURNS

47       On  success OATH_OK (zero) is returned, OATH_INVALID_BASE32 is returned
48       if the input contains non-base32 characters, and  OATH_MALLOC_ERROR  is
49       returned on memory allocation errors.
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SINCE

52       1.12.0
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REPORTING BUGS

55       Report  bugs  to  <oath-toolkit-help@nongnu.org>.   liboath  home page:
56       https://www.nongnu.org/oath-toolkit/ General help using  GNU  software:
57       http://www.gnu.org/gethelp/
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60       Copyright © 2009-2020 Simon Josefsson.
61       Copying  and  distribution  of this file, with or without modification,
62       are permitted in any medium without royalty provided the copyright  no‐
63       tice and this notice are preserved.
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67liboath                              2.6.7               oath_base32_decode(3)
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