blob: 00d1ea9ab49ca6261d9c3f6d54b0b90d50348288 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*************************************************
* PBKDF1 Source File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#include <botan/pbkdf1.h>
namespace Botan {
/*************************************************
* Return a PKCS#5 PBKDF1 derived key *
*************************************************/
OctetString PKCS5_PBKDF1::derive(u32bit key_len,
const std::string& passphrase,
const byte salt[], u32bit salt_size,
u32bit iterations) const
{
if(iterations == 0)
throw Invalid_Argument("PKCS#5 PBKDF1: Invalid iteration count");
if(key_len > hash->OUTPUT_LENGTH)
throw Exception("PKCS#5 PBKDF1: Requested output length too long");
hash->update(passphrase);
hash->update(salt, salt_size);
SecureVector<byte> key = hash->final();
for(u32bit j = 1; j != iterations; ++j)
{
hash->update(key);
hash->final(key);
}
return OctetString(key, std::min(key_len, key.size()));
}
/*************************************************
* Clone this type *
*************************************************/
S2K* PKCS5_PBKDF1::clone() const
{
return new PKCS5_PBKDF1(hash->clone());
}
/*************************************************
* Return the name of this type *
*************************************************/
std::string PKCS5_PBKDF1::name() const
{
return "PBKDF1(" + hash->name() + ")";
}
}
|
