gsasl_base64_encode - API function

       char const * src
                   input byte array

       size_t srclength
                   size of input byte array

       char * target
                   output byte array

       size_t targsize
                   size of output byte array

       Copyright © 2002-2021 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.

       Use gsasl_base64_to() instead.

       Encode data as base64.  Converts characters, three at a time, starting at src into four base64 characters
       in the target area until the entire input buffer is encoded.

       Return value: Returns the number of data bytes stored at the target, or -1 on error.

       gsasl_base64_encode - API function

       Report bugs to <bug-gsasl@gnu.org>.
       General guidelines for reporting bugs: http://www.gnu.org/gethelp/
       GNU SASL home page: http://www.gnu.org/software/gsasl/

       The full documentation for gsasl is maintained as a Texinfo manual.  If the info and gsasl  programs  are
       properly installed at your site, the command

              infogsasl

       should give you access to the complete manual.  As an alternative you may obtain the manual from:

              http://www.gnu.org/software/gsasl/manual/

gsasl                                                1.10.0                               gsasl_base64_encode(3)

#include<gsasl.h>intgsasl_base64_encode(charconst*src,size_tsrclength,char*target,size_ttargsize);