13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
* file.
*/
#include "config.h"
#include <stdlib.h>
#import "OFHMAC.h"
#import "OFSecureData.h"
#import "OFInvalidArgumentException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "pbkdf2.h"
of_pbkdf2(of_pbkdf2_parameters_t param)
|
>
<
<
|
|
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
* file.
*/
#include "config.h"
#include <stdlib.h>
#import "OFPBKDF2.h"
#import "OFHMAC.h"
#import "OFSecureData.h"
#import "OFInvalidArgumentException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
void
OFPBKDF2(OFPBKDF2Parameters param)
{
void *pool = objc_autoreleasePoolPush();
size_t blocks, digestSize = param.HMAC.digestSize;
OFSecureData *buffer = [OFSecureData
dataWithCount: digestSize
allowsSwappableMemory: param.allowsSwappableMemory];
OFSecureData *digest = [OFSecureData
|
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
extendedSalt = [OFSecureData
dataWithCount: param.saltLength + 4
allowsSwappableMemory: param.allowsSwappableMemory];
extendedSaltItems = extendedSalt.mutableItems;
@try {
uint32_t i = OF_BSWAP32_IF_LE(1);
[param.HMAC setKey: param.password
length: param.passwordLength];
memcpy(extendedSaltItems, param.salt, param.saltLength);
while (param.keyLength > 0) {
|
|
|
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
extendedSalt = [OFSecureData
dataWithCount: param.saltLength + 4
allowsSwappableMemory: param.allowsSwappableMemory];
extendedSaltItems = extendedSalt.mutableItems;
@try {
uint32_t i = OFToBigEndian32(1);
[param.HMAC setKey: param.password
length: param.passwordLength];
memcpy(extendedSaltItems, param.salt, param.saltLength);
while (param.keyLength > 0) {
|
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
if (length > param.keyLength)
length = param.keyLength;
memcpy(param.key, bufferItems, length);
param.key += length;
param.keyLength -= length;
i = OF_BSWAP32_IF_LE(OF_BSWAP32_IF_LE(i) + 1);
}
} @catch (id e) {
[extendedSalt zero];
[buffer zero];
[digest zero];
@throw e;
} @finally {
[param.HMAC zero];
}
objc_autoreleasePoolPop(pool);
}
|
|
|
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
if (length > param.keyLength)
length = param.keyLength;
memcpy(param.key, bufferItems, length);
param.key += length;
param.keyLength -= length;
i = OFToBigEndian32(OFFromBigEndian32(i) + 1);
}
} @catch (id e) {
[extendedSalt zero];
[buffer zero];
[digest zero];
@throw e;
} @finally {
[param.HMAC zero];
}
objc_autoreleasePoolPop(pool);
}
|