1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-sha.c SHA-1 implementation
4 * Copyright (C) 2003 Red Hat Inc.
5 * Copyright (C) 1995 A. M. Kuchling
7 * Licensed under the Academic Free License version 2.1
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "dbus-internals.h"
28 #include "dbus-marshal-basic.h" /* for byteswap routines */
31 /* The following comments have the history of where this code
32 * comes from. I actually copied it from GNet in GNOME CVS.
37 * sha.h : Implementation of the Secure Hash Algorithm
39 * Part of the Python Cryptography Toolkit, version 1.0.0
41 * Copyright (C) 1995, A.M. Kuchling
43 * Distribute and use freely; there are no restrictions on further
44 * dissemination and usage except those imposed by the laws of your
45 * country of residence.
49 /* SHA: NIST's Secure Hash Algorithm */
51 /* Based on SHA code originally posted to sci.crypt by Peter Gutmann
52 in message <30ajo5$oe8@ccu2.auckland.ac.nz>.
53 Modified to test for endianness on creation of SHA objects by AMK.
54 Also, the original specification of SHA was found to have a weakness
55 by NSA/NIST. This code implements the fixed version of SHA.
58 /* Here's the first paragraph of Peter Gutmann's posting:
60 The following is my SHA (FIPS 180) code updated to allow use of the "fixed"
61 SHA, thanks to Jim Gillogly and an anonymous contributor for the information on
62 what's changed in the new version. The fix is a simple change which involves
63 adding a single rotate in the initial expansion function. It is unknown
64 whether this is an optimal solution to the problem which was discovered in the
65 SHA or whether it's simply a bandaid which fixes the problem with a minimum of
66 effort (for example the reengineering of a great many Capstone chips).
70 * @defgroup DBusSHA SHA implementation
71 * @ingroup DBusInternals
74 * Types and functions related to computing SHA-1 hash.
78 * @defgroup DBusSHAInternals SHA implementation details
79 * @ingroup DBusInternals
80 * @brief Internals of SHA implementation.
82 * The implementation of SHA-1 (see http://www.itl.nist.gov/fipspubs/fip180-1.htm).
83 * This SHA implementation was written by A.M. Kuchling
88 #ifndef DOXYGEN_SHOULD_SKIP_THIS
90 /* The SHA block size and message digest sizes, in bytes */
92 #define SHA_DATASIZE 64
93 #define SHA_DIGESTSIZE 20
95 /* The SHA f()-functions. The f1 and f3 functions can be optimized to
96 save one boolean operation each - thanks to Rich Schroeppel,
97 rcs@cs.arizona.edu for discovering this */
99 /*#define f1(x,y,z) ( ( x & y ) | ( ~x & z ) ) // Rounds 0-19 */
100 #define f1(x,y,z) ( z ^ ( x & ( y ^ z ) ) ) /* Rounds 0-19 */
101 #define f2(x,y,z) ( x ^ y ^ z ) /* Rounds 20-39 */
102 /*#define f3(x,y,z) ( ( x & y ) | ( x & z ) | ( y & z ) ) // Rounds 40-59 */
103 #define f3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) ) /* Rounds 40-59 */
104 #define f4(x,y,z) ( x ^ y ^ z ) /* Rounds 60-79 */
106 /* The SHA Mysterious Constants */
108 #define K1 0x5A827999L /* Rounds 0-19 */
109 #define K2 0x6ED9EBA1L /* Rounds 20-39 */
110 #define K3 0x8F1BBCDCL /* Rounds 40-59 */
111 #define K4 0xCA62C1D6L /* Rounds 60-79 */
113 /* SHA initial values */
115 #define h0init 0x67452301L
116 #define h1init 0xEFCDAB89L
117 #define h2init 0x98BADCFEL
118 #define h3init 0x10325476L
119 #define h4init 0xC3D2E1F0L
121 /* Note that it may be necessary to add parentheses to these macros if they
122 are to be called with expressions as arguments */
123 /* 32-bit rotate left - kludged with shifts */
125 #define ROTL(n,X) ( ( ( X ) << n ) | ( ( X ) >> ( 32 - n ) ) )
127 /* The initial expanding function. The hash function is defined over an
128 80-word expanded input array W, where the first 16 are copies of the input
129 data, and the remaining 64 are defined by
131 W[ i ] = W[ i - 16 ] ^ W[ i - 14 ] ^ W[ i - 8 ] ^ W[ i - 3 ]
133 This implementation generates these values on the fly in a circular
134 buffer - thanks to Colin Plumb, colin@nyx10.cs.du.edu for this
137 The updated SHA changes the expanding function by adding a rotate of 1
138 bit. Thanks to Jim Gillogly, jim@rand.org, and an anonymous contributor
139 for this information */
141 #define expand(W,i) ( W[ i & 15 ] = ROTL( 1, ( W[ i & 15 ] ^ W[ (i - 14) & 15 ] ^ \
142 W[ (i - 8) & 15 ] ^ W[ (i - 3) & 15 ] ) ) )
145 /* The prototype SHA sub-round. The fundamental sub-round is:
147 a' = e + ROTL( 5, a ) + f( b, c, d ) + k + data;
153 but this is implemented by unrolling the loop 5 times and renaming the
154 variables ( e, a, b, c, d ) = ( a', b', c', d', e' ) each iteration.
155 This code is then replicated 20 times for each of the 4 functions, using
156 the next 20 values from the W[] array each time */
158 #define subRound(a, b, c, d, e, f, k, data) \
159 ( e += ROTL( 5, a ) + f( b, c, d ) + k + data, b = ROTL( 30, b ) )
161 #endif /* !DOXYGEN_SHOULD_SKIP_THIS */
163 /* Perform the SHA transformation. Note that this code, like MD5, seems to
164 break some optimizing compilers due to the complexity of the expressions
165 and the size of the basic block. It may be necessary to split it into
166 sections, e.g. based on the four subrounds
168 Note that this corrupts the context->data area */
171 SHATransform(dbus_uint32_t *digest, dbus_uint32_t *data)
173 dbus_uint32_t A, B, C, D, E; /* Local vars */
174 dbus_uint32_t eData[16]; /* Expanded data */
176 /* Set up first buffer and local data buffer */
182 memmove (eData, data, SHA_DATASIZE);
184 /* Heavy mangling, in 4 sub-rounds of 20 interations each. */
185 subRound (A, B, C, D, E, f1, K1, eData[0]);
186 subRound (E, A, B, C, D, f1, K1, eData[1]);
187 subRound (D, E, A, B, C, f1, K1, eData[2]);
188 subRound (C, D, E, A, B, f1, K1, eData[3]);
189 subRound (B, C, D, E, A, f1, K1, eData[4]);
190 subRound (A, B, C, D, E, f1, K1, eData[5]);
191 subRound (E, A, B, C, D, f1, K1, eData[6]);
192 subRound (D, E, A, B, C, f1, K1, eData[7]);
193 subRound (C, D, E, A, B, f1, K1, eData[8]);
194 subRound (B, C, D, E, A, f1, K1, eData[9]);
195 subRound (A, B, C, D, E, f1, K1, eData[10]);
196 subRound (E, A, B, C, D, f1, K1, eData[11]);
197 subRound (D, E, A, B, C, f1, K1, eData[12]);
198 subRound (C, D, E, A, B, f1, K1, eData[13]);
199 subRound (B, C, D, E, A, f1, K1, eData[14]);
200 subRound (A, B, C, D, E, f1, K1, eData[15]);
201 subRound (E, A, B, C, D, f1, K1, expand ( eData, 16) );
202 subRound (D, E, A, B, C, f1, K1, expand ( eData, 17) );
203 subRound (C, D, E, A, B, f1, K1, expand ( eData, 18) );
204 subRound (B, C, D, E, A, f1, K1, expand ( eData, 19) );
206 subRound (A, B, C, D, E, f2, K2, expand ( eData, 20) );
207 subRound (E, A, B, C, D, f2, K2, expand ( eData, 21) );
208 subRound (D, E, A, B, C, f2, K2, expand ( eData, 22) );
209 subRound (C, D, E, A, B, f2, K2, expand ( eData, 23) );
210 subRound (B, C, D, E, A, f2, K2, expand ( eData, 24) );
211 subRound (A, B, C, D, E, f2, K2, expand ( eData, 25) );
212 subRound (E, A, B, C, D, f2, K2, expand ( eData, 26) );
213 subRound (D, E, A, B, C, f2, K2, expand ( eData, 27) );
214 subRound (C, D, E, A, B, f2, K2, expand ( eData, 28) );
215 subRound (B, C, D, E, A, f2, K2, expand ( eData, 29) );
216 subRound (A, B, C, D, E, f2, K2, expand ( eData, 30) );
217 subRound (E, A, B, C, D, f2, K2, expand ( eData, 31) );
218 subRound (D, E, A, B, C, f2, K2, expand ( eData, 32) );
219 subRound (C, D, E, A, B, f2, K2, expand ( eData, 33) );
220 subRound (B, C, D, E, A, f2, K2, expand ( eData, 34) );
221 subRound (A, B, C, D, E, f2, K2, expand ( eData, 35) );
222 subRound (E, A, B, C, D, f2, K2, expand ( eData, 36) );
223 subRound (D, E, A, B, C, f2, K2, expand ( eData, 37) );
224 subRound (C, D, E, A, B, f2, K2, expand ( eData, 38) );
225 subRound (B, C, D, E, A, f2, K2, expand ( eData, 39) );
227 subRound (A, B, C, D, E, f3, K3, expand ( eData, 40) );
228 subRound (E, A, B, C, D, f3, K3, expand ( eData, 41) );
229 subRound (D, E, A, B, C, f3, K3, expand ( eData, 42) );
230 subRound (C, D, E, A, B, f3, K3, expand ( eData, 43) );
231 subRound (B, C, D, E, A, f3, K3, expand ( eData, 44) );
232 subRound (A, B, C, D, E, f3, K3, expand ( eData, 45) );
233 subRound (E, A, B, C, D, f3, K3, expand ( eData, 46) );
234 subRound (D, E, A, B, C, f3, K3, expand ( eData, 47) );
235 subRound (C, D, E, A, B, f3, K3, expand ( eData, 48) );
236 subRound (B, C, D, E, A, f3, K3, expand ( eData, 49) );
237 subRound (A, B, C, D, E, f3, K3, expand ( eData, 50) );
238 subRound (E, A, B, C, D, f3, K3, expand ( eData, 51) );
239 subRound (D, E, A, B, C, f3, K3, expand ( eData, 52) );
240 subRound (C, D, E, A, B, f3, K3, expand ( eData, 53) );
241 subRound (B, C, D, E, A, f3, K3, expand ( eData, 54) );
242 subRound (A, B, C, D, E, f3, K3, expand ( eData, 55) );
243 subRound (E, A, B, C, D, f3, K3, expand ( eData, 56) );
244 subRound (D, E, A, B, C, f3, K3, expand ( eData, 57) );
245 subRound (C, D, E, A, B, f3, K3, expand ( eData, 58) );
246 subRound (B, C, D, E, A, f3, K3, expand ( eData, 59) );
248 subRound (A, B, C, D, E, f4, K4, expand ( eData, 60) );
249 subRound (E, A, B, C, D, f4, K4, expand ( eData, 61) );
250 subRound (D, E, A, B, C, f4, K4, expand ( eData, 62) );
251 subRound (C, D, E, A, B, f4, K4, expand ( eData, 63) );
252 subRound (B, C, D, E, A, f4, K4, expand ( eData, 64) );
253 subRound (A, B, C, D, E, f4, K4, expand ( eData, 65) );
254 subRound (E, A, B, C, D, f4, K4, expand ( eData, 66) );
255 subRound (D, E, A, B, C, f4, K4, expand ( eData, 67) );
256 subRound (C, D, E, A, B, f4, K4, expand ( eData, 68) );
257 subRound (B, C, D, E, A, f4, K4, expand ( eData, 69) );
258 subRound (A, B, C, D, E, f4, K4, expand ( eData, 70) );
259 subRound (E, A, B, C, D, f4, K4, expand ( eData, 71) );
260 subRound (D, E, A, B, C, f4, K4, expand ( eData, 72) );
261 subRound (C, D, E, A, B, f4, K4, expand ( eData, 73) );
262 subRound (B, C, D, E, A, f4, K4, expand ( eData, 74) );
263 subRound (A, B, C, D, E, f4, K4, expand ( eData, 75) );
264 subRound (E, A, B, C, D, f4, K4, expand ( eData, 76) );
265 subRound (D, E, A, B, C, f4, K4, expand ( eData, 77) );
266 subRound (C, D, E, A, B, f4, K4, expand ( eData, 78) );
267 subRound (B, C, D, E, A, f4, K4, expand ( eData, 79) );
269 /* Build message digest */
277 /* When run on a little-endian CPU we need to perform byte reversal on an
278 array of longwords. */
280 #ifdef WORDS_BIGENDIAN
281 #define swap_words(buffer, byte_count)
284 swap_words (dbus_uint32_t *buffer,
287 byte_count /= sizeof (dbus_uint32_t);
290 *buffer = DBUS_UINT32_SWAP_LE_BE (*buffer);
297 sha_init (DBusSHAContext *context)
299 /* Set the h-vars to their initial values */
300 context->digest[0] = h0init;
301 context->digest[1] = h1init;
302 context->digest[2] = h2init;
303 context->digest[3] = h3init;
304 context->digest[4] = h4init;
306 /* Initialise bit count */
307 context->count_lo = context->count_hi = 0;
311 sha_append (DBusSHAContext *context,
312 const unsigned char *buffer,
316 unsigned int dataCount;
318 /* Update bitcount */
319 tmp = context->count_lo;
320 if (( context->count_lo = tmp + ( ( dbus_uint32_t) count << 3) ) < tmp)
321 context->count_hi++; /* Carry from low to high */
322 context->count_hi += count >> 29;
324 /* Get count of bytes already in data */
325 dataCount = (int) (tmp >> 3) & 0x3F;
327 /* Handle any leading odd-sized chunks */
330 unsigned char *p = (unsigned char *) context->data + dataCount;
332 dataCount = SHA_DATASIZE - dataCount;
333 if (count < dataCount)
335 memmove (p, buffer, count);
338 memmove (p, buffer, dataCount);
339 swap_words (context->data, SHA_DATASIZE);
340 SHATransform (context->digest, context->data);
345 /* Process data in SHA_DATASIZE chunks */
346 while (count >= SHA_DATASIZE)
348 memmove (context->data, buffer, SHA_DATASIZE);
349 swap_words (context->data, SHA_DATASIZE);
350 SHATransform (context->digest, context->data);
351 buffer += SHA_DATASIZE;
352 count -= SHA_DATASIZE;
355 /* Handle any remaining bytes of data. */
356 memmove (context->data, buffer, count);
360 /* Final wrapup - pad to SHA_DATASIZE-byte boundary with the bit pattern
361 1 0* (64-bit count of bits processed, MSB-first) */
364 sha_finish (DBusSHAContext *context, unsigned char digest[20])
367 unsigned char *data_p;
369 /* Compute number of bytes mod 64 */
370 count = (int) context->count_lo;
371 count = (count >> 3) & 0x3F;
373 /* Set the first char of padding to 0x80. This is safe since there is
374 always at least one byte free */
375 data_p = (unsigned char *) context->data + count;
378 /* Bytes of padding needed to make 64 bytes */
379 count = SHA_DATASIZE - 1 - count;
381 /* Pad out to 56 mod 64 */
384 /* Two lots of padding: Pad the first block to 64 bytes */
385 memset (data_p, 0, count);
386 swap_words (context->data, SHA_DATASIZE);
387 SHATransform (context->digest, context->data);
389 /* Now fill the next block with 56 bytes */
390 memset (context->data, 0, SHA_DATASIZE - 8);
393 /* Pad block to 56 bytes */
394 memset (data_p, 0, count - 8);
396 /* Append length in bits and transform */
397 context->data[14] = context->count_hi;
398 context->data[15] = context->count_lo;
400 swap_words (context->data, SHA_DATASIZE - 8);
401 SHATransform (context->digest, context->data);
402 swap_words (context->digest, SHA_DIGESTSIZE);
403 memmove (digest, context->digest, SHA_DIGESTSIZE);
406 /** @} */ /* End of internals */
409 * @addtogroup DBusSHA
415 * Initializes the SHA context.
417 * @param context an uninitialized context, typically on the stack.
420 _dbus_sha_init (DBusSHAContext *context)
426 * Feeds more data into an existing shasum computation.
428 * @param context the SHA context
429 * @param data the additional data to hash
432 _dbus_sha_update (DBusSHAContext *context,
433 const DBusString *data)
435 unsigned int inputLen;
436 const unsigned char *input;
438 input = (const unsigned char*) _dbus_string_get_const_data (data);
439 inputLen = _dbus_string_get_length (data);
441 sha_append (context, input, inputLen);
445 * SHA finalization. Ends an SHA message-digest operation, writing the
446 * the message digest and zeroing the context. The results are
447 * returned as a raw 20-byte digest, not as the ascii-hex-digits
448 * string form of the digest.
450 * @param context the SHA context
451 * @param results string to append the 20-byte SHA digest to
452 * @returns #FALSE if not enough memory to append the digest
456 _dbus_sha_final (DBusSHAContext *context,
459 unsigned char digest[20];
461 sha_finish (context, digest);
463 if (!_dbus_string_append_len (results, digest, 20))
466 /* some kind of security paranoia, though it seems pointless
467 * to me given the nonzeroed stuff flying around
469 _DBUS_ZERO(*context);
475 * Computes the ASCII hex-encoded shasum of the given data and
476 * appends it to the output string.
478 * @param data input data to be hashed
479 * @param ascii_output string to append ASCII shasum to
480 * @returns #FALSE if not enough memory
483 _dbus_sha_compute (const DBusString *data,
484 DBusString *ascii_output)
486 DBusSHAContext context;
489 _dbus_sha_init (&context);
491 _dbus_sha_update (&context, data);
493 if (!_dbus_string_init (&digest))
496 if (!_dbus_sha_final (&context, &digest))
499 if (!_dbus_string_hex_encode (&digest, 0, ascii_output,
500 _dbus_string_get_length (ascii_output)))
503 _dbus_string_free (&digest);
508 _dbus_string_free (&digest);
512 /** @} */ /* end of exported functions */
514 #ifdef DBUS_BUILD_TESTS
515 #include "dbus-test.h"
519 check_sha_binary (const unsigned char *input,
521 const char *expected)
523 DBusString input_str;
524 DBusString expected_str;
527 _dbus_string_init_const_len (&input_str, input, input_len);
528 _dbus_string_init_const (&expected_str, expected);
530 if (!_dbus_string_init (&results))
531 _dbus_assert_not_reached ("no memory for SHA-1 results");
533 if (!_dbus_sha_compute (&input_str, &results))
534 _dbus_assert_not_reached ("no memory for SHA-1 results");
536 if (!_dbus_string_equal (&expected_str, &results))
538 _dbus_warn ("Expected hash %s got %s for SHA-1 sum\n",
540 _dbus_string_get_const_data (&results));
541 _dbus_string_free (&results);
545 _dbus_string_free (&results);
550 check_sha_str (const char *input,
551 const char *expected)
553 return check_sha_binary (input, strlen (input), expected);
557 decode_compact_string (const DBusString *line,
561 dbus_bool_t current_b;
570 if (!_dbus_string_parse_int (line, offset, &val, &next))
572 fprintf (stderr, "could not parse length at start of compact string: %s\n",
573 _dbus_string_get_const_data (line));
577 _dbus_string_skip_blank (line, next, &next);
580 if (!_dbus_string_parse_int (line, offset, &val, &next))
582 fprintf (stderr, "could not parse start bit 'b' in compact string: %s\n",
583 _dbus_string_get_const_data (line));
587 if (!(val == 0 || val == 1))
589 fprintf (stderr, "the value 'b' must be 0 or 1, see sha-1/Readme.txt\n");
593 _dbus_string_skip_blank (line, next, &next);
598 while (next < _dbus_string_get_length (line))
604 if (_dbus_string_get_byte (line, offset) == '^')
607 if (!_dbus_string_parse_int (line, offset, &val, &next))
609 fprintf (stderr, "could not parse bit count in compact string\n");
613 /* We now append "val" copies of "current_b" bits to the string */
614 total_bits = n_bits + val;
615 while (n_bits < total_bits)
617 int byte_containing_next_bit = n_bits / 8;
618 int bit_containing_next_bit = 7 - (n_bits % 8);
619 unsigned char old_byte;
621 if (byte_containing_next_bit >= _dbus_string_get_length (decoded))
623 if (!_dbus_string_set_length (decoded, byte_containing_next_bit + 1))
624 _dbus_assert_not_reached ("no memory to extend to next byte");
627 old_byte = _dbus_string_get_byte (decoded, byte_containing_next_bit);
628 old_byte |= current_b << bit_containing_next_bit;
631 printf ("Appending bit %d to byte %d at bit %d resulting in byte 0x%x\n",
632 current_b, byte_containing_next_bit,
633 bit_containing_next_bit, old_byte);
636 _dbus_string_set_byte (decoded, byte_containing_next_bit, old_byte);
641 _dbus_string_skip_blank (line, next, &next);
643 current_b = !current_b;
646 length_bytes = (n_bits / 8 + ((n_bits % 8) ? 1 : 0));
648 if (_dbus_string_get_length (decoded) != length_bytes)
650 fprintf (stderr, "Expected length %d bytes %d bits for compact string, got %d bytes\n",
651 length_bytes, n_bits, _dbus_string_get_length (decoded));
659 get_next_expected_result (DBusString *results,
667 if (!_dbus_string_init (&line))
668 _dbus_assert_not_reached ("no memory");
671 while (_dbus_string_pop_line (results, &line))
673 _dbus_string_delete_leading_blanks (&line);
675 if (_dbus_string_get_length (&line) == 0)
677 else if (_dbus_string_starts_with_c_str (&line, "#"))
679 else if (_dbus_string_starts_with_c_str (&line, "H>"))
683 else if (_dbus_string_starts_with_c_str (&line, "D>") ||
684 _dbus_string_starts_with_c_str (&line, "<D"))
690 if (!_dbus_string_move (&line, 0, result, 0))
691 _dbus_assert_not_reached ("no memory");
694 while (i < _dbus_string_get_length (result))
696 switch (_dbus_string_get_byte (result, i))
699 _dbus_string_set_byte (result, i, 'a');
702 _dbus_string_set_byte (result, i, 'b');
705 _dbus_string_set_byte (result, i, 'c');
708 _dbus_string_set_byte (result, i, 'd');
711 _dbus_string_set_byte (result, i, 'e');
714 _dbus_string_set_byte (result, i, 'f');
718 _dbus_string_delete (result, i, 1);
719 --i; /* to offset ++i below */
733 _dbus_string_free (&line);
738 process_test_data (const char *test_data_dir)
740 DBusString tests_file;
741 DBusString results_file;
749 DBusError error = DBUS_ERROR_INIT;
753 if (!_dbus_string_init (&tests_file))
754 _dbus_assert_not_reached ("no memory");
756 if (!_dbus_string_init (&results_file))
757 _dbus_assert_not_reached ("no memory");
759 if (!_dbus_string_init (&tests))
760 _dbus_assert_not_reached ("no memory");
762 if (!_dbus_string_init (&results))
763 _dbus_assert_not_reached ("no memory");
765 if (!_dbus_string_init (&line))
766 _dbus_assert_not_reached ("no memory");
768 if (!_dbus_string_append (&tests_file, test_data_dir))
769 _dbus_assert_not_reached ("no memory");
771 if (!_dbus_string_append (&results_file, test_data_dir))
772 _dbus_assert_not_reached ("no memory");
774 _dbus_string_init_const (&tmp, "sha-1/byte-messages.sha1");
775 if (!_dbus_concat_dir_and_file (&tests_file, &tmp))
776 _dbus_assert_not_reached ("no memory");
778 _dbus_string_init_const (&tmp, "sha-1/byte-hashes.sha1");
779 if (!_dbus_concat_dir_and_file (&results_file, &tmp))
780 _dbus_assert_not_reached ("no memory");
782 if (!_dbus_file_get_contents (&tests, &tests_file, &error))
784 fprintf (stderr, "could not load test data file %s: %s\n",
785 _dbus_string_get_const_data (&tests_file),
787 dbus_error_free (&error);
791 if (!_dbus_file_get_contents (&results, &results_file, &error))
793 fprintf (stderr, "could not load results data file %s: %s\n",
794 _dbus_string_get_const_data (&results_file), error.message);
795 dbus_error_free (&error);
802 while (_dbus_string_pop_line (&tests, &line))
806 _dbus_string_delete_leading_blanks (&line);
808 if (_dbus_string_get_length (&line) == 0)
810 else if (_dbus_string_starts_with_c_str (&line, "#"))
812 else if (_dbus_string_starts_with_c_str (&line, "H>"))
814 printf ("SHA-1: %s\n", _dbus_string_get_const_data (&line));
816 if (_dbus_string_find (&line, 0, "Type 3", NULL))
818 /* See sha-1/Readme.txt - the "Type 3" tests are
819 * random seeds, rather than data to be hashed.
820 * we'd have to do a little bit more implementation
821 * to use those tests.
824 printf (" (ending tests due to Type 3 tests seen - this is normal)\n");
828 else if (_dbus_string_starts_with_c_str (&line, "D>") ||
829 _dbus_string_starts_with_c_str (&line, "<D"))
835 DBusString next_line;
841 if (!_dbus_string_init (&next_line))
842 _dbus_assert_not_reached ("no memory");
844 if (!_dbus_string_init (&expected))
845 _dbus_assert_not_reached ("no memory");
847 if (!_dbus_string_init (&test))
848 _dbus_assert_not_reached ("no memory");
850 if (!_dbus_string_init (&result))
851 _dbus_assert_not_reached ("no memory");
853 /* the "compact strings" are "^"-terminated not
854 * newline-terminated so readahead to find the
857 while (!_dbus_string_find (&line, 0, "^", NULL) &&
858 _dbus_string_pop_line (&tests, &next_line))
860 if (!_dbus_string_append_byte (&line, ' ') ||
861 !_dbus_string_move (&next_line, 0, &line,
862 _dbus_string_get_length (&line)))
863 _dbus_assert_not_reached ("no memory");
866 if (!decode_compact_string (&line, &test))
868 fprintf (stderr, "Failed to decode line %d as a compact string\n",
873 if (!_dbus_sha_compute (&test, &result))
874 _dbus_assert_not_reached ("no memory for SHA-1 result");
876 if (!get_next_expected_result (&results, &expected))
878 fprintf (stderr, "Failed to read an expected result\n");
882 if (!_dbus_string_equal (&result, &expected))
884 fprintf (stderr, " for line %d got hash %s expected %s\n",
886 _dbus_string_get_const_data (&result),
887 _dbus_string_get_const_data (&expected));
898 _dbus_string_free (&test);
899 _dbus_string_free (&result);
900 _dbus_string_free (&next_line);
901 _dbus_string_free (&expected);
910 printf ("Passed the %d SHA-1 tests in the test file\n",
914 _dbus_string_free (&tests_file);
915 _dbus_string_free (&results_file);
916 _dbus_string_free (&tests);
917 _dbus_string_free (&results);
918 _dbus_string_free (&line);
924 * @ingroup DBusSHAInternals
925 * Unit test for SHA computation.
927 * @returns #TRUE on success.
930 _dbus_sha_test (const char *test_data_dir)
932 unsigned char all_bytes[256];
935 if (test_data_dir != NULL)
937 if (!process_test_data (test_data_dir))
941 printf ("No test data dir\n");
950 if (!check_sha_binary (all_bytes, 256,
951 "4916d6bdb7f78e6803698cab32d1586ea457dfc8"))
954 #define CHECK(input,expected) if (!check_sha_str (input, expected)) return FALSE
956 CHECK ("", "da39a3ee5e6b4b0d3255bfef95601890afd80709");
957 CHECK ("a", "86f7e437faa5a7fce15d1ddcb9eaeaea377667b8");
958 CHECK ("abc", "a9993e364706816aba3e25717850c26c9cd0d89d");
959 CHECK ("message digest", "c12252ceda8be8994d5fa0290a47231c1d16aae3");
960 CHECK ("abcdefghijklmnopqrstuvwxyz", "32d10c7b8cf96570ca04ce37f2a19d84240d3a89");
961 CHECK ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
962 "761c457bf73b14d27e9e9265c46f4b4dda11f940");
963 CHECK ("12345678901234567890123456789012345678901234567890123456789012345678901234567890",
964 "50abf5706a150990a08b2c5ea40fa0e585554732");
969 #endif /* DBUS_BUILD_TESTS */