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/*
* $Id: Twofish.xs,v 2.12 2001/05/21 17:38:01 ams Exp $
* Copyright 2001 Abhijit Menon-Sen <ams@wiw.org>
*/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "twofish.h"
typedef struct twofish * Crypt__Twofish;
MODULE = Crypt::Twofish PACKAGE = Crypt::Twofish PREFIX = twofish_
PROTOTYPES: DISABLE
Crypt::Twofish
twofish_setup(key)
char * key = NO_INIT
STRLEN keylen = NO_INIT
CODE:
{
key = SvPV(ST(0), keylen);
if (keylen != 16 && keylen != 24 && keylen != 32)
croak("key must be 16, 24, or 32 bytes long");
RETVAL = twofish_setup((unsigned char *)key, keylen);
}
OUTPUT:
RETVAL
void
twofish_DESTROY(self)
Crypt::Twofish self
CODE:
twofish_free(self);
void
twofish_crypt(self, input, output, decrypt)
Crypt::Twofish self
char * input = NO_INIT
SV * output
int decrypt
STRLEN inlen = NO_INIT
STRLEN outlen = NO_INIT
CODE:
{
input = SvPV(ST(1), inlen);
if (inlen != 16)
croak("input must be 16 bytes long");
if (output == &PL_sv_undef)
output = sv_newmortal();
outlen = 16;
if (SvREADONLY(output) || !SvUPGRADE(output, SVt_PV))
croak("cannot use output as lvalue");
twofish_crypt(self,
(unsigned char *)input,
(unsigned char *)SvGROW(output, outlen),
decrypt);
SvCUR_set(output, outlen);
*SvEND(output) = '\0';
SvPOK_only(output);
SvTAINT(output);
ST(0) = output;
}
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