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/*
* lib/crypto/t_nfold.c
*
* Copyright 1988, 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* Program to test the correctness of nfold implementation.
*
* exit returns 0 ==> success
* -1 ==> error
*/
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "k5-int.h"
#define ASIZE(ARRAY) (sizeof(ARRAY)/sizeof(ARRAY[0]))
static void printhex (size_t len, const unsigned char *p)
{
while (len--)
printf ("%02x", 0xff & *p++);
}
static void printstringhex (const unsigned char *p) {
printhex (strlen ((const char *) p), p);
}
static void rfc_tests ()
{
int i;
struct {
char *input;
unsigned int n;
unsigned char exp[192/8];
} tests[] = {
{ "012345", 64,
{ 0xbe,0x07,0x26,0x31,0x27,0x6b,0x19,0x55, }
},
{ "password", 56,
{ 0x78,0xa0,0x7b,0x6c,0xaf,0x85,0xfa, }
},
{ "Rough Consensus, and Running Code", 64,
{ 0xbb,0x6e,0xd3,0x08,0x70,0xb7,0xf0,0xe0, }
},
{ "password", 168,
{ 0x59,0xe4,0xa8,0xca,0x7c,0x03,0x85,0xc3,
0xc3,0x7b,0x3f,0x6d,0x20,0x00,0x24,0x7c,
0xb6,0xe6,0xbd,0x5b,0x3e, }
},
{ "MASSACHVSETTS INSTITVTE OF TECHNOLOGY", 192,
{ 0xdb,0x3b,0x0d,0x8f,0x0b,0x06,0x1e,0x60,
0x32,0x82,0xb3,0x08,0xa5,0x08,0x41,0x22,
0x9a,0xd7,0x98,0xfa,0xb9,0x54,0x0c,0x1b, }
},
};
unsigned char outbuf[192/8];
printf ("RFC tests:\n");
for (i = 0; i < ASIZE (tests); i++) {
unsigned char *p = (unsigned char *) tests[i].input;
assert (tests[i].n / 8 <= sizeof (outbuf));
krb5_nfold (8 * strlen ((char *) p), p, tests[i].n, outbuf);
printf ("%d-fold(\"%s\") =\n", tests[i].n, p);
printf ("%d-fold(", tests[i].n);
printstringhex (p);
printf (") =\n\t");
printhex (tests[i].n / 8, outbuf);
printf ("\n\n");
if (memcmp (outbuf, tests[i].exp, tests[i].n/8) != 0) {
printf ("wrong value! expected:\n\t");
printhex (tests[i].n / 8, tests[i].exp);
exit (1);
}
}
}
static void fold_kerberos(unsigned int nbytes)
{
unsigned char cipher_text[300];
int j;
if (nbytes > 300)
abort();
printf("%d-fold(\"kerberos\") =\n\t", nbytes*8);
krb5_nfold(64, (unsigned char *) "kerberos", 8*nbytes, cipher_text);
for (j=0; j<nbytes; j++)
printf("%s%02x", (j&3) ? "" : " ", cipher_text[j]);
printf("\n");
}
unsigned char *nfold_in[] = {
(unsigned char *) "basch",
(unsigned char *) "eichin",
(unsigned char *) "sommerfeld",
(unsigned char *) "MASSACHVSETTS INSTITVTE OF TECHNOLOGY" };
unsigned char nfold_192[4][24] = {
{ 0x1a, 0xab, 0x6b, 0x42, 0x96, 0x4b, 0x98, 0xb2, 0x1f, 0x8c, 0xde, 0x2d,
0x24, 0x48, 0xba, 0x34, 0x55, 0xd7, 0x86, 0x2c, 0x97, 0x31, 0x64, 0x3f },
{ 0x65, 0x69, 0x63, 0x68, 0x69, 0x6e, 0x4b, 0x73, 0x2b, 0x4b, 0x1b, 0x43,
0xda, 0x1a, 0x5b, 0x99, 0x5a, 0x58, 0xd2, 0xc6, 0xd0, 0xd2, 0xdc, 0xca },
{ 0x2f, 0x7a, 0x98, 0x55, 0x7c, 0x6e, 0xe4, 0xab, 0xad, 0xf4, 0xe7, 0x11,
0x92, 0xdd, 0x44, 0x2b, 0xd4, 0xff, 0x53, 0x25, 0xa5, 0xde, 0xf7, 0x5c },
{ 0xdb, 0x3b, 0x0d, 0x8f, 0x0b, 0x06, 0x1e, 0x60, 0x32, 0x82, 0xb3, 0x08,
0xa5, 0x08, 0x41, 0x22, 0x9a, 0xd7, 0x98, 0xfa, 0xb9, 0x54, 0x0c, 0x1b }
};
int
main(argc, argv)
int argc;
char *argv[];
{
unsigned char cipher_text[64];
int i, j;
printf("N-fold\n");
for (i=0; i<sizeof(nfold_in)/sizeof(char *); i++) {
printf("\tInput:\t\"%.*s\"\n", (int) strlen((char *) nfold_in[i]),
nfold_in[i]);
printf("\t192-Fold:\t");
krb5_nfold(strlen((char *) nfold_in[i])*8, nfold_in[i], 24*8,
cipher_text);
for (j=0; j<24; j++)
printf("%s%02x", (j&3) ? "" : " ", cipher_text[j]);
printf("\n");
if (memcmp(cipher_text, nfold_192[i], 24)) {
printf("verify: error in n-fold\n");
exit(-1);
};
}
rfc_tests ();
printf("verify: N-fold is correct\n\n");
fold_kerberos(8);
fold_kerberos(16);
fold_kerberos(21);
fold_kerberos(32);
exit(0);
}
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