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cryb-to/t/t_rfc4648.c
2016-09-17 16:05:31 +02:00

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/*-
* Copyright (c) 2013-2014 The University of Oslo
* Copyright (c) 2014 Dag-Erling Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "cryb/impl.h"
#include <sys/types.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <cryb/rfc4648.h>
#include <cryb/test.h>
struct t_case {
const char *desc;
int (*func)(const char *, size_t, char *, size_t *);
const char *in; /* input string */
size_t ilen; /* input length */
const char *out; /* expected output string or NULL */
size_t blen; /* initial value for olen or 0 */
size_t olen; /* expected value for olen */
int ret; /* expected return value */
int err; /* expected errno if ret != 0 */
};
/* basic encoding / decoding */
#define T_ENCODE_N(N, i, o) \
{ "base"#N"_encode("#i")", b##N##enc, i, sizeof i - 1, \
o, sizeof o, sizeof o, 0, 0 }
#define T_DECODE_N(N, i, o) \
{ "base"#N"_decode("#i")", b##N##dec, i, sizeof i - 1, \
o, sizeof o - 1, sizeof o - 1, 0, 0 }
#define T_ENCODE(p, b32, b64) \
T_ENCODE_N(32, p, b32), T_ENCODE_N(64, p, b64)
#define T_DECODE(p, b32, b64) \
T_DECODE_N(32, b32, p), T_DECODE_N(64, b64, p)
/* roundtrip encoding tests */
#define T_ENCDEC_N(N, p, e) \
T_ENCODE_N(N, p, e), T_DECODE_N(N, e, p)
#define T_ENCDEC(p, b32, b64) \
T_ENCDEC_N(32, p, b32), T_ENCDEC_N(64, p, b64)
/* decoding failure */
#define T_DECODE_FAIL_N(N, e, i) \
{ "base"#N"_decode("#i")", b##N##dec, i, sizeof i - 1, \
NULL, 0, 0, -1, e }
#define T_DECODE_FAIL(e, b32, b64) \
T_DECODE_FAIL_N(32, e, b32), T_DECODE_FAIL_N(64, e, b64)
/* input string shorter than input length */
#define T_SHORT_INPUT_DEC(N, i) \
{ "base"#N"_decode (short input)", b##N##dec, i, sizeof i + 2, \
NULL, 0, base##N##_declen(sizeof i - 1), 0, 0 }
#define T_SHORT_INPUT() \
T_SHORT_INPUT_DEC(32, "AAAAAAAA"), \
T_SHORT_INPUT_DEC(64, "AAAA")
/* output string longer than output length */
#define T_LONG_OUTPUT_ENC(N, i) \
{ "base"#N"_enc (long output)", b##N##enc, i, sizeof i - 1, \
NULL, 1, base##N##_enclen(sizeof i - 1) + 1, -1, ENOSPC }
#define T_LONG_OUTPUT_DEC(N, i) \
{ "base"#N"_decode (long output)", b##N##dec, "AAAAAAAA", 8, \
NULL, 1, base##N##_declen(sizeof i - 1), -1, ENOSPC }
#define T_LONG_OUTPUT() \
T_LONG_OUTPUT_ENC(32, "foo"), \
T_LONG_OUTPUT_DEC(32, "AAAAAAAA"), \
T_LONG_OUTPUT_ENC(64, "foo"), \
T_LONG_OUTPUT_DEC(64, "AAAA")
static const char b64alphabet[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
static const char b64complete[] = {
0x00, 0x10, 0x83, 0x10, 0x51, 0x87,
0x20, 0x92, 0x8b, 0x30, 0xd3, 0x8f,
0x41, 0x14, 0x93, 0x51, 0x55, 0x97,
0x61, 0x96, 0x9b, 0x71, 0xd7, 0x9f,
0x82, 0x18, 0xa3, 0x92, 0x59, 0xa7,
0xa2, 0x9a, 0xab, 0xb2, 0xdb, 0xaf,
0xc3, 0x1c, 0xb3, 0xd3, 0x5d, 0xb7,
0xe3, 0x9e, 0xbb, 0xf3, 0xdf, 0xbf,
0x00
};
static const char b32alphabet[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
static const char b32complete[] = {
0x00, 0x44, 0x32, 0x14, 0xc7,
0x42, 0x54, 0xb6, 0x35, 0xcf,
0x84, 0x65, 0x3a, 0x56, 0xd7,
0xc6, 0x75, 0xbe, 0x77, 0xdf,
0x00
};
static int
b32enc(const char *in, size_t ilen, char *out, size_t *olen)
{
return (base32_encode((const uint8_t *)in, ilen, out, olen));
}
static int
b32dec(const char *in, size_t ilen, char *out, size_t *olen)
{
return (base32_decode(in, ilen, (uint8_t *)out, olen));
}
static int
b64enc(const char *in, size_t ilen, char *out, size_t *olen)
{
return (base64_encode((const uint8_t *)in, ilen, out, olen));
}
static int
b64dec(const char *in, size_t ilen, char *out, size_t *olen)
{
return (base64_decode(in, ilen, (uint8_t *)out, olen));
}
static struct t_case t_cases[] = {
/* complete alphabet */
T_ENCDEC_N(32, b32complete, b32alphabet),
T_ENCDEC_N(64, b64complete, b64alphabet),
/* test vectors from RFC 4648 */
/* plain base32 base64 */
T_ENCDEC("", "", ""),
T_ENCDEC("f", "MY======", "Zg=="),
T_ENCDEC("fo", "MZXQ====", "Zm8="),
T_ENCDEC("foo", "MZXW6===", "Zm9v"),
T_ENCDEC("foob", "MZXW6YQ=", "Zm9vYg=="),
T_ENCDEC("fooba", "MZXW6YTB", "Zm9vYmE="),
T_ENCDEC("foobar", "MZXW6YTBOI======", "Zm9vYmFy"),
/* zeroes */
T_ENCDEC("\0\0\0", "AAAAA===", "AAAA"),
/* sloppy padding */
T_DECODE("f", "MY=", "Zg="),
T_DECODE("f", "MY", "Zg"),
/* whitespace */
/* plain base32 base64 */
T_DECODE("tst", "ORZX I===", "dH N0"),
T_DECODE("tst", "ORZX\tI===", "dH\tN0"),
T_DECODE("tst", "ORZX\rI===", "dH\rN0"),
T_DECODE("tst", "ORZX\nI===", "dH\nN0"),
/* invalid character in data */
T_DECODE_FAIL(EINVAL, "AA!AAAAAA", "AA!A"),
/* invalid character in padding */
T_DECODE_FAIL(EINVAL, "AAAAA==!", "AA=!"),
/* padding with no data */
T_DECODE_FAIL(EINVAL, "AAAAAAAA=", "AAAA="),
/* data after padding */
T_DECODE_FAIL(EINVAL, "AA=A", "AA=A"),
/* padding in the wrong place, or non-zero bits in padding */
T_DECODE_FAIL_N(32, EINVAL, "A======="),
T_DECODE_N (32, "AA======", "\x00"),
T_DECODE_FAIL_N(32, EINVAL, "AB======"),
T_DECODE_FAIL_N(32, EINVAL, "AC======"),
T_DECODE_FAIL_N(32, EINVAL, "AD======"),
T_DECODE_N (32, "AE======", "\x01"),
T_DECODE_FAIL_N(32, EINVAL, "AAA====="),
T_DECODE_N (32, "AAAA====", "\x00\x00"),
T_DECODE_FAIL_N(32, EINVAL, "AAAB===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAC===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAD===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAE===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAF===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAG===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAH===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAI===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAJ===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAK===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAL===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAM===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAN===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAO===="),
T_DECODE_FAIL_N(32, EINVAL, "AAAP===="),
T_DECODE_N (32, "AAAQ====", "\x00\x01"),
T_DECODE_N (32, "AAAAA===", "\x00\x00\x00"),
T_DECODE_FAIL_N(32, EINVAL, "AAAAB==="),
T_DECODE_N (32, "AAAAC===", "\x00\x00\x01"),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAA=="),
T_DECODE_N (32, "AAAAAAA=", "\x00\x00\x00\x00"),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAB="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAC="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAD="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAE="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAF="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAG="),
T_DECODE_FAIL_N(32, EINVAL, "AAAAAAH="),
T_DECODE_N (32, "AAAAAAI=", "\x00\x00\x00\x01"),
T_DECODE_N (32, "AAAAAAAA", "\x00\x00\x00\x00\x00"),
T_DECODE_FAIL_N(64, EINVAL, "A==="),
T_DECODE_N (64, "AA==", "\x00"),
T_DECODE_FAIL_N(64, EINVAL, "AB=="),
T_DECODE_FAIL_N(64, EINVAL, "AC=="),
T_DECODE_FAIL_N(64, EINVAL, "AD=="),
T_DECODE_FAIL_N(64, EINVAL, "AE=="),
T_DECODE_FAIL_N(64, EINVAL, "AF=="),
T_DECODE_FAIL_N(64, EINVAL, "AG=="),
T_DECODE_FAIL_N(64, EINVAL, "AH=="),
T_DECODE_FAIL_N(64, EINVAL, "AI=="),
T_DECODE_FAIL_N(64, EINVAL, "AJ=="),
T_DECODE_FAIL_N(64, EINVAL, "AK=="),
T_DECODE_FAIL_N(64, EINVAL, "AL=="),
T_DECODE_FAIL_N(64, EINVAL, "AM=="),
T_DECODE_FAIL_N(64, EINVAL, "AN=="),
T_DECODE_FAIL_N(64, EINVAL, "AO=="),
T_DECODE_FAIL_N(64, EINVAL, "AP=="),
T_DECODE_N (64, "AQ==", "\x01"),
T_DECODE_N (64, "AAA=", "\x00\x00"),
T_DECODE_FAIL_N(64, EINVAL, "AAB="),
T_DECODE_FAIL_N(64, EINVAL, "AAC="),
T_DECODE_FAIL_N(64, EINVAL, "AAD="),
T_DECODE_N (64, "AAE=", "\x00\x01"),
/* various error conditions */
T_SHORT_INPUT(),
T_LONG_OUTPUT(),
};
/*
* Encoding test function
*/
static int
t_rfc4648(char **desc CRYB_UNUSED, void *arg)
{
struct t_case *t = arg;
char buf[256];
size_t len;
int ret;
len = t->blen ? t->blen : sizeof buf;
ret = t->func(t->in, t->ilen, buf, &len);
if (ret != t->ret) {
t_verbose("expected return code %d, got %d\n",
t->ret, ret);
return (0);
}
if (t->out && len != t->olen) {
t_verbose("expected output length %zu, got %zu\n",
t->olen, len);
return (0);
}
if (t->ret != 0 && errno != t->err) {
t_verbose("expected errno %d, got %d\n",
t->err, errno);
return (0);
}
if (t->ret == 0 && t->out && strncmp(buf, t->out, len) != 0) {
t_verbose("expected '%.*s' got '%.*s'\n",
(int)t->olen, t->out, (int)len, buf);
return (0);
}
return (1);
}
/***************************************************************************
* Boilerplate
*/
static int
t_prepare(int argc, char *argv[])
{
int i, n;
(void)argc;
(void)argv;
n = sizeof t_cases / sizeof t_cases[0];
for (i = 0; i < n; ++i)
t_add_test(t_rfc4648, &t_cases[i], t_cases[i].desc);
return (0);
}
int
main(int argc, char *argv[])
{
t_main(t_prepare, NULL, argc, argv);
}