NAME

       shishi_encrypt_etype - API function

SYNOPSIS

       #include <shishi.h>

       int  shishi_encrypt_etype(Shishi  * handle, Shishi_key * key, int keyusage, int32_t etype,
       const char * in, size_t inlen, char ** out, size_t * outlen);

ARGUMENTS

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

       Shishi_key * key
                   key to encrypt with.

       int keyusage
                   integer specifying what this key is encrypting.

       int32_t etype
                   integer specifying what cipher to use.

       const char * in
                   input array with data to encrypt.

       size_t inlen
                   size of input array with data to encrypt.

       char ** out output array with newly allocated encrypted data.

       size_t * outlen
                   output variable with size of newly allocated output array.

DESCRIPTION

       Encrypts data as per encryption method using specified initialization vector and key.  The
       key actually used is derived using the key usage.  If key usage is 0, no key derivation is
       used.  The OUT buffer must be deallocated by the caller.  The  default  IV  is  used,  see
       shishi_encrypt_iv_etype   if   you   need   to   alter  it.  The  next  IV  is  lost,  see
       shishi_encrypt_ivupdate_etype if you need it.

       Note that DECRYPT(ENCRYPT(data)) does not necessarily yield data exactly.  Some encryption
       types  add  pad  to  make  the  data  fit into the block size of the encryption algorithm.
       Furthermore, the pad is not guaranteed to look  in  any  special  way,  although  existing
       implementations  often  pad  with  the zero byte.  This means that you may have to "frame"
       data, so it is possible to infer the original length after decryption.  Compare ASN.1  DER
       which contains such information.

RETURN VALUE

       Returns SHISHI_OK iff successful.

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.