gsasl_hmac_sha1 - API function

       const char * key
                   input character array with key to use.

       size_t keylen
                   length of input character array with key to use.

       const char * in
                   input character array of data to hash.

       size_t inlen
                   length of input character array of data to hash.

       char * [] outhash
                   newly allocated 20-byte character array with keyed hash of data.

       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 a crypto library.

       Compute keyed checksum of data using HMAC-SHA1.  The  outhash buffer must be deallocated by the caller.

       Return value: Returns GSASL_OK iff successful.

       gsasl_hmac_sha1 - 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_hmac_sha1(3)

       1.3

#include<gsasl.h>intgsasl_hmac_sha1(constchar*key,size_tkeylen,constchar*in,size_tinlen,char*[]outhash);