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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* t_etypes.c -- test program for krb5int_parse_enctype_list
*
* Copyright 2009 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.
*/
#include "k5-int.h"
#include <stdio.h>
#include "com_err.h"
static struct {
const char *str;
krb5_enctype defaults[64];
krb5_enctype expected_noweak[64];
krb5_enctype expected[64];
} tests[] = {
/* Empty string, unused default list */
{ "",
{ ENCTYPE_DES_CBC_CRC, 0 },
{ 0 },
{ 0 }
},
/* Single weak enctype */
{ "des-cbc-md4",
{ 0 },
{ 0 },
{ ENCTYPE_DES_CBC_MD4, 0 }
},
/* Single non-weak enctype */
{ "aes128-cts-hmac-sha1-96",
{ 0 },
{ ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 },
{ ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 }
},
/* Two enctypes, one an alias, one weak */
{ "rc4-hmac des-cbc-md5",
{ 0 },
{ ENCTYPE_ARCFOUR_HMAC, 0 },
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_DES_CBC_MD5, 0 }
},
/* Three enctypes, all weak, case variation, funky separators */
{ " deS-HMac-shA1 , arCFour-hmaC-mD5-exp\tdeS3-Cbc-RAw\n",
{ 0 },
{ 0 },
{ ENCTYPE_DES_HMAC_SHA1, ENCTYPE_ARCFOUR_HMAC_EXP,
ENCTYPE_DES3_CBC_RAW, 0 }
},
/* Default set with enctypes added (one weak in each pair) */
{ "DEFAULT des-cbc-raw +des3-hmac-sha1",
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_ARCFOUR_HMAC_EXP, 0 },
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_DES3_CBC_SHA1, 0 },
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_ARCFOUR_HMAC_EXP,
ENCTYPE_DES_CBC_RAW, ENCTYPE_DES3_CBC_SHA1, 0 }
},
/* Default set with enctypes removed */
{ "default -aes128-cts -des-hmac-sha1",
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_DES_CBC_MD5, ENCTYPE_DES_HMAC_SHA1, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_DES_CBC_MD5, 0 }
},
/* Family followed by enctype */
{ "aes des3-cbc-sha1-kd",
{ 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_DES3_CBC_SHA1, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_DES3_CBC_SHA1, 0 }
},
/* Enctype followed by two families */
{ "+rc4-hmAC des3 +des",
{ 0 },
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_DES3_CBC_SHA1, 0 },
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_DES3_CBC_SHA1, ENCTYPE_DES_CBC_CRC,
ENCTYPE_DES_CBC_MD5, ENCTYPE_DES_CBC_MD4 }
},
/* Default set with family added and enctype removed */
{ "DEFAULT +aes -arcfour-hmac-md5",
{ ENCTYPE_ARCFOUR_HMAC, ENCTYPE_DES3_CBC_SHA1, ENCTYPE_DES_CBC_CRC, 0 },
{ ENCTYPE_DES3_CBC_SHA1, ENCTYPE_AES256_CTS_HMAC_SHA1_96,
ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 },
{ ENCTYPE_DES3_CBC_SHA1, ENCTYPE_DES_CBC_CRC,
ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 }
},
/* Default set with families removed and enctypes added (one redundant) */
{ "DEFAULT -des -des3 rc4-hmac rc4-hmac-exp",
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_DES3_CBC_SHA1, ENCTYPE_ARCFOUR_HMAC,
ENCTYPE_DES_CBC_CRC, ENCTYPE_DES_CBC_MD5, ENCTYPE_DES_CBC_MD4, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_ARCFOUR_HMAC, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_ARCFOUR_HMAC, ENCTYPE_ARCFOUR_HMAC_EXP, 0 }
},
/* Default set with family moved to front */
{ "des3 +DEFAULT",
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_AES128_CTS_HMAC_SHA1_96,
ENCTYPE_DES3_CBC_SHA1, 0 },
{ ENCTYPE_DES3_CBC_SHA1, ENCTYPE_AES256_CTS_HMAC_SHA1_96,
ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 },
{ ENCTYPE_DES3_CBC_SHA1, ENCTYPE_AES256_CTS_HMAC_SHA1_96,
ENCTYPE_AES128_CTS_HMAC_SHA1_96, 0 }
},
/* Two families with default set removed (exotic case), enctype added */
{ "aes +rc4 -DEFaulT des3-hmac-sha1",
{ ENCTYPE_AES128_CTS_HMAC_SHA1_96, ENCTYPE_DES3_CBC_SHA1,
ENCTYPE_ARCFOUR_HMAC, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_DES3_CBC_SHA1, 0 },
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, ENCTYPE_DES3_CBC_SHA1, 0 }
}
};
static void
show_enctypes(krb5_context ctx, krb5_enctype *list)
{
unsigned int i;
for (i = 0; list[i]; i++) {
fprintf(stderr, "%d", (int) list[i]);
if (list[i + 1])
fprintf(stderr, " ");
}
fprintf(stderr, "\n");
}
static void
compare(krb5_context ctx, krb5_enctype *result, krb5_enctype *expected,
const char *profstr, krb5_boolean weak)
{
unsigned int i;
for (i = 0; result[i]; i++) {
if (result[i] != expected[i])
break;
}
if (!result[i] && !expected[i]) /* Success! */
return;
fprintf(stderr, "Unexpected result while parsing: %s\n", profstr);
fprintf(stderr, "Expected: ");
show_enctypes(ctx, expected);
fprintf(stderr, "Result: ");
show_enctypes(ctx, result);
fprintf(stderr, "allow_weak_crypto was %s\n", weak ? "true" : "false");
exit(1);
}
int
main(int argc, char **argv)
{
krb5_context ctx;
krb5_error_code ret;
krb5_enctype *list;
krb5_boolean weak;
unsigned int i;
char *copy;
ret = krb5_init_context(&ctx);
if (ret) {
com_err("krb5_init_context", ret, "");
return 2;
}
for (i = 0; i < sizeof(tests) / sizeof(*tests); i++) {
for (weak = FALSE; weak <= TRUE; weak++) {
ctx->allow_weak_crypto = weak;
copy = strdup(tests[i].str);
ret = krb5int_parse_enctype_list(ctx, copy, tests[i].defaults,
&list);
if (ret) {
com_err("krb5int_parse_enctype_list", ret, "");
return 2;
}
compare(ctx, list,
(weak) ? tests[i].expected : tests[i].expected_noweak,
tests[i].str, weak);
free(copy);
free(list);
}
}
krb5_free_context(ctx);
return 0;
}
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