ObjFW  Diff

Differences From Artifact [79fab1d90f]:

To Artifact [477f4216b9]:


19
20
21
22
23
24
25
26
27


28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65

66
67
68
69
70

71
72
73
74
75

76
77
78
79
80
81
82
19
20
21
22
23
24
25


26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43

44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

65
66
67
68
69

70
71
72
73
74

75
76
77
78
79
80
81
82







-
-
+
+
















-
+




















-
+




-
+




-
+








#import "OFSHA1Hash.h"
#import "OFSecureData.h"

#import "OFHashAlreadyCalculatedException.h"
#import "OFOutOfRangeException.h"

#define DIGEST_SIZE 20
#define BLOCK_SIZE 64
static const size_t digestSize = 20;
static const size_t blockSize = 64;

OF_DIRECT_MEMBERS
@interface OFSHA1Hash ()
- (void)of_resetState;
@end

#define F(a, b, c, d) ((d) ^ ((b) & ((c) ^ (d))))
#define G(a, b, c, d) ((b) ^ (c) ^ (d))
#define H(a, b, c, d) (((b) & (c)) | ((d) & ((b) | (c))))
#define I(a, b, c, d) ((b) ^ (c) ^ (d))

static OF_INLINE void
byteSwapVectorIfLE(uint32_t *vector, uint_fast8_t length)
{
#ifndef OF_BIG_ENDIAN
	for (uint_fast8_t i = 0; i < length; i++)
		vector[i] = OF_BSWAP32(vector[i]);
		vector[i] = OFByteSwap32(vector[i]);
#endif
}

static void
processBlock(uint32_t *state, uint32_t *buffer)
{
	uint32_t new[5];
	uint_fast8_t i;

	new[0] = state[0];
	new[1] = state[1];
	new[2] = state[2];
	new[3] = state[3];
	new[4] = state[4];

	byteSwapVectorIfLE(buffer, 16);

	for (i = 16; i < 80; i++) {
		uint32_t tmp = buffer[i - 3] ^ buffer[i - 8] ^
		    buffer[i - 14] ^ buffer[i - 16];
		buffer[i] = OF_ROL(tmp, 1);
		buffer[i] = OFRotateLeft(tmp, 1);
	}

#define LOOP_BODY(f, k)							\
	{								\
		uint32_t tmp = OF_ROL(new[0], 5) +			\
		uint32_t tmp = OFRotateLeft(new[0], 5) +		\
		    f(new[0], new[1], new[2], new[3]) +			\
		    new[4] + k + buffer[i];				\
		new[4] = new[3];					\
		new[3] = new[2];					\
		new[2] = OF_ROL(new[1], 30);				\
		new[2] = OFRotateLeft(new[1], 30);			\
		new[1] = new[0];					\
		new[0] = tmp;						\
	}

	for (i = 0; i < 20; i++)
		LOOP_BODY(F, 0x5A827999)
	for (; i < 40; i++)
97
98
99
100
101
102
103
104

105
106
107
108
109

110
111
112
113
114
115
116
97
98
99
100
101
102
103

104
105
106
107
108

109
110
111
112
113
114
115
116







-
+




-
+








@implementation OFSHA1Hash
@synthesize calculated = _calculated;
@synthesize allowsSwappableMemory = _allowsSwappableMemory;

+ (size_t)digestSize
{
	return DIGEST_SIZE;
	return digestSize;
}

+ (size_t)blockSize
{
	return BLOCK_SIZE;
	return blockSize;
}

+ (instancetype)hashWithAllowsSwappableMemory: (bool)allowsSwappableMemory
{
	return [[[self alloc] initWithAllowsSwappableMemory:
	    allowsSwappableMemory] autorelease];
}
150
151
152
153
154
155
156
157

158
159
160
161
162

163
164
165
166
167
168
169
150
151
152
153
154
155
156

157
158
159
160
161

162
163
164
165
166
167
168
169







-
+




-
+







	[_iVarsData release];

	[super dealloc];
}

- (size_t)digestSize
{
	return DIGEST_SIZE;
	return digestSize;
}

- (size_t)blockSize
{
	return BLOCK_SIZE;
	return blockSize;
}

- (id)copy
{
	OFSHA1Hash *copy = [[OFSHA1Hash alloc] of_init];

	copy->_iVarsData = [_iVarsData copy];
218
219
220
221
222
223
224
225

226
227
228
229
230

231
232
233
234

235
236

237
238
239

240
241
242
243
244
245
246
247
248
249
250

251
252
253
254
218
219
220
221
222
223
224

225
226
227
228
229

230
231
232
233

234
235

236
237
238

239
240
241
242
243
244
245
246
247
248
249

250
251
252
253
254







-
+




-
+



-
+

-
+


-
+










-
+





- (const unsigned char *)digest
{
	if (_calculated)
		return (const unsigned char *)_iVars->state;

	_iVars->buffer.bytes[_iVars->bufferLength] = 0x80;
	of_explicit_memset(_iVars->buffer.bytes + _iVars->bufferLength + 1, 0,
	OFZeroMemory(_iVars->buffer.bytes + _iVars->bufferLength + 1,
	    64 - _iVars->bufferLength - 1);

	if (_iVars->bufferLength >= 56) {
		processBlock(_iVars->state, _iVars->buffer.words);
		of_explicit_memset(_iVars->buffer.bytes, 0, 64);
		OFZeroMemory(_iVars->buffer.bytes, 64);
	}

	_iVars->buffer.words[14] =
	    OF_BSWAP32_IF_LE((uint32_t)(_iVars->bits >> 32));
	    OFToBigEndian32((uint32_t)(_iVars->bits >> 32));
	_iVars->buffer.words[15] =
	    OF_BSWAP32_IF_LE((uint32_t)(_iVars->bits & 0xFFFFFFFF));
	    OFToBigEndian32((uint32_t)(_iVars->bits & 0xFFFFFFFF));

	processBlock(_iVars->state, _iVars->buffer.words);
	of_explicit_memset(&_iVars->buffer, 0, sizeof(_iVars->buffer));
	OFZeroMemory(&_iVars->buffer, sizeof(_iVars->buffer));
	byteSwapVectorIfLE(_iVars->state, 5);
	_calculated = true;

	return (const unsigned char *)_iVars->state;
}

- (void)reset
{
	[self of_resetState];
	_iVars->bits = 0;
	of_explicit_memset(&_iVars->buffer, 0, sizeof(_iVars->buffer));
	OFZeroMemory(&_iVars->buffer, sizeof(_iVars->buffer));
	_iVars->bufferLength = 0;
	_calculated = false;
}
@end