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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>.

COPYRIGHT

       Copyright © 2002-2010 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.