aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp')
-rw-r--r--src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp186
1 files changed, 186 insertions, 0 deletions
diff --git a/src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp b/src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp
new file mode 100644
index 0000000..051e45b
--- /dev/null
+++ b/src/others/irrlicht-1.8.1/source/Irrlicht/aesGladman/pwd2key.cpp
@@ -0,0 +1,186 @@
1/*
2 ---------------------------------------------------------------------------
3 Copyright (c) 2002, Dr Brian Gladman < >, Worcester, UK.
4 All rights reserved.
5
6 LICENSE TERMS
7
8 The free distribution and use of this software in both source and binary
9 form is allowed (with or without changes) provided that:
10
11 1. distributions of this source code include the above copyright
12 notice, this list of conditions and the following disclaimer;
13
14 2. distributions in binary form include the above copyright
15 notice, this list of conditions and the following disclaimer
16 in the documentation and/or other associated materials;
17
18 3. the copyright holder's name is not used to endorse products
19 built using this software without specific written permission.
20
21 ALTERNATIVELY, provided that this notice is retained in full, this product
22 may be distributed under the terms of the GNU General Public License (GPL),
23 in which case the provisions of the GPL apply INSTEAD OF those given above.
24
25 DISCLAIMER
26
27 This software is provided 'as is' with no explicit or implied warranties
28 in respect of its properties, including, but not limited to, correctness
29 and/or fitness for purpose.
30 ---------------------------------------------------------------------------
31 Issue Date: 26/08/2003
32
33 This is an implementation of RFC2898, which specifies key derivation from
34 a password and a salt value.
35*/
36
37#include <memory.h>
38#include "hmac.h"
39
40void derive_key(const unsigned char pwd[], /* the PASSWORD */
41 unsigned int pwd_len, /* and its length */
42 const unsigned char salt[], /* the SALT and its */
43 unsigned int salt_len, /* length */
44 unsigned int iter, /* the number of iterations */
45 unsigned char key[], /* space for the output key */
46 unsigned int key_len)/* and its required length */
47{
48 unsigned int i, j, k, n_blk;
49 unsigned char uu[HMAC_HASH_OUTPUT_SIZE], ux[HMAC_HASH_OUTPUT_SIZE];
50 hmac_ctx c1[1], c2[1], c3[1];
51
52 /* set HMAC context (c1) for password */
53 hmac_sha_begin(c1);
54 hmac_sha_key(pwd, pwd_len, c1);
55
56 /* set HMAC context (c2) for password and salt */
57 memcpy(c2, c1, sizeof(hmac_ctx));
58 hmac_sha_data(salt, salt_len, c2);
59
60 /* find the number of SHA blocks in the key */
61 n_blk = 1 + (key_len - 1) / HMAC_HASH_OUTPUT_SIZE;
62
63 for(i = 0; i < n_blk; ++i) /* for each block in key */
64 {
65 /* ux[] holds the running xor value */
66 memset(ux, 0, HMAC_HASH_OUTPUT_SIZE);
67
68 /* set HMAC context (c3) for password and salt */
69 memcpy(c3, c2, sizeof(hmac_ctx));
70
71 /* enter additional data for 1st block into uu */
72 uu[0] = (unsigned char)((i + 1) >> 24);
73 uu[1] = (unsigned char)((i + 1) >> 16);
74 uu[2] = (unsigned char)((i + 1) >> 8);
75 uu[3] = (unsigned char)(i + 1);
76
77 /* this is the key mixing iteration */
78 for(j = 0, k = 4; j < iter; ++j)
79 {
80 /* add previous round data to HMAC */
81 hmac_sha_data(uu, k, c3);
82
83 /* obtain HMAC for uu[] */
84 hmac_sha_end(uu, HMAC_HASH_OUTPUT_SIZE, c3);
85
86 /* xor into the running xor block */
87 for(k = 0; k < HMAC_HASH_OUTPUT_SIZE; ++k)
88 ux[k] ^= uu[k];
89
90 /* set HMAC context (c3) for password */
91 memcpy(c3, c1, sizeof(hmac_ctx));
92 }
93
94 /* compile key blocks into the key output */
95 j = 0; k = i * HMAC_HASH_OUTPUT_SIZE;
96 while(j < HMAC_HASH_OUTPUT_SIZE && k < key_len)
97 key[k++] = ux[j++];
98 }
99}
100
101#ifdef TEST
102
103#include <stdio.h>
104
105struct
106{ unsigned int pwd_len;
107 unsigned int salt_len;
108 unsigned int it_count;
109 unsigned char *pwd;
110 unsigned char salt[32];
111 unsigned char key[32];
112} tests[] =
113{
114 { 8, 4, 5, (unsigned char*)"password",
115 {
116 0x12, 0x34, 0x56, 0x78
117 },
118 {
119 0x5c, 0x75, 0xce, 0xf0, 0x1a, 0x96, 0x0d, 0xf7,
120 0x4c, 0xb6, 0xb4, 0x9b, 0x9e, 0x38, 0xe6, 0xb5
121 }
122 },
123 { 8, 8, 5, (unsigned char*)"password",
124 {
125 0x12, 0x34, 0x56, 0x78, 0x78, 0x56, 0x34, 0x12
126 },
127 {
128 0xd1, 0xda, 0xa7, 0x86, 0x15, 0xf2, 0x87, 0xe6,
129 0xa1, 0xc8, 0xb1, 0x20, 0xd7, 0x06, 0x2a, 0x49
130 }
131 },
132 { 8, 21, 1, (unsigned char*)"password",
133 {
134 "ATHENA.MIT.EDUraeburn"
135 },
136 {
137 0xcd, 0xed, 0xb5, 0x28, 0x1b, 0xb2, 0xf8, 0x01,
138 0x56, 0x5a, 0x11, 0x22, 0xb2, 0x56, 0x35, 0x15
139 }
140 },
141 { 8, 21, 2, (unsigned char*)"password",
142 {
143 "ATHENA.MIT.EDUraeburn"
144 },
145 {
146 0x01, 0xdb, 0xee, 0x7f, 0x4a, 0x9e, 0x24, 0x3e,
147 0x98, 0x8b, 0x62, 0xc7, 0x3c, 0xda, 0x93, 0x5d
148 }
149 },
150 { 8, 21, 1200, (unsigned char*)"password",
151 {
152 "ATHENA.MIT.EDUraeburn"
153 },
154 {
155 0x5c, 0x08, 0xeb, 0x61, 0xfd, 0xf7, 0x1e, 0x4e,
156 0x4e, 0xc3, 0xcf, 0x6b, 0xa1, 0xf5, 0x51, 0x2b
157 }
158 }
159};
160
161int main()
162{ unsigned int i, j, key_len = 256;
163 unsigned char key[256];
164
165 printf("\nTest of RFC2898 Password Based Key Derivation");
166 for(i = 0; i < 5; ++i)
167 {
168 derive_key(tests[i].pwd, tests[i].pwd_len, tests[i].salt,
169 tests[i].salt_len, tests[i].it_count, key, key_len);
170
171 printf("\ntest %i: ", i + 1);
172 printf("key %s", memcmp(tests[i].key, key, 16) ? "is bad" : "is good");
173 for(j = 0; j < key_len && j < 64; j += 4)
174 {
175 if(j % 16 == 0)
176 printf("\n");
177 printf("0x%02x%02x%02x%02x ", key[j], key[j + 1], key[j + 2], key[j + 3]);
178 }
179 printf(j < key_len ? " ... \n" : "\n");
180 }
181 printf("\n");
182 return 0;
183}
184
185#endif
186
generated by cgit v1.1 at 2024-06-27 09:11:51 +0000