NAME

       shishi_crypto - API function

SYNOPSIS

       #include <shishi.h>

       Shishi_crypto  * shishi_crypto(Shishi * handle, Shishi_key * key, int keyusage, int32_t etype, const char
       * iv, size_t ivlen);

ARGUMENTS

       Shishi * handle
                   shishi handle as allocated by shishi_init().

       Shishi_key * key
                   key to encrypt with.

       int keyusage
                   integer specifying what this key will encrypt/decrypt.

       int32_t etype
                   integer specifying what cipher to use.

       const char * iv
                   input array with initialization vector

       size_t ivlen
                   size of input array with initialization vector.

DESCRIPTION

       Initialize a crypto context.  This store a key, keyusage, encryption type and initialization vector in  a
       "context", and the caller can then use this context to perform encryption via shishi_crypto_encrypt() and
       decryption via shishi_crypto_encrypt() without supplying all those details  again.   The  functions  also
       takes care of propagating the IV between calls.

       When the application no longer need to use the context, it should deallocate resources associated with it
       by calling shishi_crypto_close().

RETURN VALUE

       Return a newly allocated crypto context.

REPORTING BUGS

       Report bugs to <bug-shishi@gnu.org>.  GNU Shishi home page:  http://www.gnu.org/software/shishi/  General
       help using GNU software: http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright © 2002-2022 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.

SEE ALSO

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

              info shishi

       should give you access to the complete manual.