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crypt.cpp
资源名称：warftpd.zip　[点击查看]
上传用户：surprise9
上传日期：2007-01-04
资源大小：426k
文件大小：21k
源码类别：

Ftp客户端

开发平台：

Visual C++

crypt.cpp：源码内容
  1. // crypt.cpp
  2. /* fcrypt.c */
  3. /* Copyright (C) 1993 Eric Young - see README for more details */
  4. #include "stdafx.h"
  5. #include "WarSoftware.h"
  6. #include <stdio.h>
  7. #include "crypt.h"
  9. /* Eric Young.
  10.  * This version of crypt has been developed from my MIT compatable
  11.  * DES library.
  12.  * The library is available at pub/DES at ftp.psy.uq.oz.au
  13.  * eay@psych.psy.uq.oz.au
  14.  */
  16. #define DES_KEY_SZ  (sizeof(des_cblock))
  17. #define DES_ENCRYPT 1
  18. #define DES_DECRYPT 0
  20. #define ITERATIONS 16
  21. #define HALF_ITERATIONS 8
  23. #define c2l(c,l) (l =((unsigned long)(*((c)++)))    , 
  24.  l|=((unsigned long)(*((c)++)))<< 8, 
  25.  l|=((unsigned long)(*((c)++)))<<16, 
  26.  l|=((unsigned long)(*((c)++)))<<24)
  28. #define l2c(l,c) (*((c)++)=(unsigned char)(((l)    )&0xff), 
  29.  *((c)++)=(unsigned char)(((l)>> 8)&0xff), 
  30.  *((c)++)=(unsigned char)(((l)>>16)&0xff), 
  31.  *((c)++)=(unsigned char)(((l)>>24)&0xff))
  34. static unsigned long SPtrans[8][64]={
  35. /* nibble 0 */
  36. 0x00820200, 0x00020000, 0x80800000, 0x80820200,
  37. 0x00800000, 0x80020200, 0x80020000, 0x80800000,
  38. 0x80020200, 0x00820200, 0x00820000, 0x80000200,
  39. 0x80800200, 0x00800000, 0x00000000, 0x80020000,
  40. 0x00020000, 0x80000000, 0x00800200, 0x00020200,
  41. 0x80820200, 0x00820000, 0x80000200, 0x00800200,
  42. 0x80000000, 0x00000200, 0x00020200, 0x80820000,
  43. 0x00000200, 0x80800200, 0x80820000, 0x00000000,
  44. 0x00000000, 0x80820200, 0x00800200, 0x80020000,
  45. 0x00820200, 0x00020000, 0x80000200, 0x00800200,
  46. 0x80820000, 0x00000200, 0x00020200, 0x80800000,
  47. 0x80020200, 0x80000000, 0x80800000, 0x00820000,
  48. 0x80820200, 0x00020200, 0x00820000, 0x80800200,
  49. 0x00800000, 0x80000200, 0x80020000, 0x00000000,
  50. 0x00020000, 0x00800000, 0x80800200, 0x00820200,
  51. 0x80000000, 0x80820000, 0x00000200, 0x80020200,
  52. /* nibble 1 */
  53. 0x10042004, 0x00000000, 0x00042000, 0x10040000,
  54. 0x10000004, 0x00002004, 0x10002000, 0x00042000,
  55. 0x00002000, 0x10040004, 0x00000004, 0x10002000,
  56. 0x00040004, 0x10042000, 0x10040000, 0x00000004,
  57. 0x00040000, 0x10002004, 0x10040004, 0x00002000,
  58. 0x00042004, 0x10000000, 0x00000000, 0x00040004,
  59. 0x10002004, 0x00042004, 0x10042000, 0x10000004,
  60. 0x10000000, 0x00040000, 0x00002004, 0x10042004,
  61. 0x00040004, 0x10042000, 0x10002000, 0x00042004,
  62. 0x10042004, 0x00040004, 0x10000004, 0x00000000,
  63. 0x10000000, 0x00002004, 0x00040000, 0x10040004,
  64. 0x00002000, 0x10000000, 0x00042004, 0x10002004,
  65. 0x10042000, 0x00002000, 0x00000000, 0x10000004,
  66. 0x00000004, 0x10042004, 0x00042000, 0x10040000,
  67. 0x10040004, 0x00040000, 0x00002004, 0x10002000,
  68. 0x10002004, 0x00000004, 0x10040000, 0x00042000,
  69. /* nibble 2 */
  70. 0x41000000, 0x01010040, 0x00000040, 0x41000040,
  71. 0x40010000, 0x01000000, 0x41000040, 0x00010040,
  72. 0x01000040, 0x00010000, 0x01010000, 0x40000000,
  73. 0x41010040, 0x40000040, 0x40000000, 0x41010000,
  74. 0x00000000, 0x40010000, 0x01010040, 0x00000040,
  75. 0x40000040, 0x41010040, 0x00010000, 0x41000000,
  76. 0x41010000, 0x01000040, 0x40010040, 0x01010000,
  77. 0x00010040, 0x00000000, 0x01000000, 0x40010040,
  78. 0x01010040, 0x00000040, 0x40000000, 0x00010000,
  79. 0x40000040, 0x40010000, 0x01010000, 0x41000040,
  80. 0x00000000, 0x01010040, 0x00010040, 0x41010000,
  81. 0x40010000, 0x01000000, 0x41010040, 0x40000000,
  82. 0x40010040, 0x41000000, 0x01000000, 0x41010040,
  83. 0x00010000, 0x01000040, 0x41000040, 0x00010040,
  84. 0x01000040, 0x00000000, 0x41010000, 0x40000040,
  85. 0x41000000, 0x40010040, 0x00000040, 0x01010000,
  86. /* nibble 3 */
  87. 0x00100402, 0x04000400, 0x00000002, 0x04100402,
  88. 0x00000000, 0x04100000, 0x04000402, 0x00100002,
  89. 0x04100400, 0x04000002, 0x04000000, 0x00000402,
  90. 0x04000002, 0x00100402, 0x00100000, 0x04000000,
  91. 0x04100002, 0x00100400, 0x00000400, 0x00000002,
  92. 0x00100400, 0x04000402, 0x04100000, 0x00000400,
  93. 0x00000402, 0x00000000, 0x00100002, 0x04100400,
  94. 0x04000400, 0x04100002, 0x04100402, 0x00100000,
  95. 0x04100002, 0x00000402, 0x00100000, 0x04000002,
  96. 0x00100400, 0x04000400, 0x00000002, 0x04100000,
  97. 0x04000402, 0x00000000, 0x00000400, 0x00100002,
  98. 0x00000000, 0x04100002, 0x04100400, 0x00000400,
  99. 0x04000000, 0x04100402, 0x00100402, 0x00100000,
  100. 0x04100402, 0x00000002, 0x04000400, 0x00100402,
  101. 0x00100002, 0x00100400, 0x04100000, 0x04000402,
  102. 0x00000402, 0x04000000, 0x04000002, 0x04100400,
  103. /* nibble 4 */
  104. 0x02000000, 0x00004000, 0x00000100, 0x02004108,
  105. 0x02004008, 0x02000100, 0x00004108, 0x02004000,
  106. 0x00004000, 0x00000008, 0x02000008, 0x00004100,
  107. 0x02000108, 0x02004008, 0x02004100, 0x00000000,
  108. 0x00004100, 0x02000000, 0x00004008, 0x00000108,
  109. 0x02000100, 0x00004108, 0x00000000, 0x02000008,
  110. 0x00000008, 0x02000108, 0x02004108, 0x00004008,
  111. 0x02004000, 0x00000100, 0x00000108, 0x02004100,
  112. 0x02004100, 0x02000108, 0x00004008, 0x02004000,
  113. 0x00004000, 0x00000008, 0x02000008, 0x02000100,
  114. 0x02000000, 0x00004100, 0x02004108, 0x00000000,
  115. 0x00004108, 0x02000000, 0x00000100, 0x00004008,
  116. 0x02000108, 0x00000100, 0x00000000, 0x02004108,
  117. 0x02004008, 0x02004100, 0x00000108, 0x00004000,
  118. 0x00004100, 0x02004008, 0x02000100, 0x00000108,
  119. 0x00000008, 0x00004108, 0x02004000, 0x02000008,
  120. /* nibble 5 */
  121. 0x20000010, 0x00080010, 0x00000000, 0x20080800,
  122. 0x00080010, 0x00000800, 0x20000810, 0x00080000,
  123. 0x00000810, 0x20080810, 0x00080800, 0x20000000,
  124. 0x20000800, 0x20000010, 0x20080000, 0x00080810,
  125. 0x00080000, 0x20000810, 0x20080010, 0x00000000,
  126. 0x00000800, 0x00000010, 0x20080800, 0x20080010,
  127. 0x20080810, 0x20080000, 0x20000000, 0x00000810,
  128. 0x00000010, 0x00080800, 0x00080810, 0x20000800,
  129. 0x00000810, 0x20000000, 0x20000800, 0x00080810,
  130. 0x20080800, 0x00080010, 0x00000000, 0x20000800,
  131. 0x20000000, 0x00000800, 0x20080010, 0x00080000,
  132. 0x00080010, 0x20080810, 0x00080800, 0x00000010,
  133. 0x20080810, 0x00080800, 0x00080000, 0x20000810,
  134. 0x20000010, 0x20080000, 0x00080810, 0x00000000,
  135. 0x00000800, 0x20000010, 0x20000810, 0x20080800,
  136. 0x20080000, 0x00000810, 0x00000010, 0x20080010,
  137. /* nibble 6 */
  138. 0x00001000, 0x00000080, 0x00400080, 0x00400001,
  139. 0x00401081, 0x00001001, 0x00001080, 0x00000000,
  140. 0x00400000, 0x00400081, 0x00000081, 0x00401000,
  141. 0x00000001, 0x00401080, 0x00401000, 0x00000081,
  142. 0x00400081, 0x00001000, 0x00001001, 0x00401081,
  143. 0x00000000, 0x00400080, 0x00400001, 0x00001080,
  144. 0x00401001, 0x00001081, 0x00401080, 0x00000001,
  145. 0x00001081, 0x00401001, 0x00000080, 0x00400000,
  146. 0x00001081, 0x00401000, 0x00401001, 0x00000081,
  147. 0x00001000, 0x00000080, 0x00400000, 0x00401001,
  148. 0x00400081, 0x00001081, 0x00001080, 0x00000000,
  149. 0x00000080, 0x00400001, 0x00000001, 0x00400080,
  150. 0x00000000, 0x00400081, 0x00400080, 0x00001080,
  151. 0x00000081, 0x00001000, 0x00401081, 0x00400000,
  152. 0x00401080, 0x00000001, 0x00001001, 0x00401081,
  153. 0x00400001, 0x00401080, 0x00401000, 0x00001001,
  154. /* nibble 7 */
  155. 0x08200020, 0x08208000, 0x00008020, 0x00000000,
  156. 0x08008000, 0x00200020, 0x08200000, 0x08208020,
  157. 0x00000020, 0x08000000, 0x00208000, 0x00008020,
  158. 0x00208020, 0x08008020, 0x08000020, 0x08200000,
  159. 0x00008000, 0x00208020, 0x00200020, 0x08008000,
  160. 0x08208020, 0x08000020, 0x00000000, 0x00208000,
  161. 0x08000000, 0x00200000, 0x08008020, 0x08200020,
  162. 0x00200000, 0x00008000, 0x08208000, 0x00000020,
  163. 0x00200000, 0x00008000, 0x08000020, 0x08208020,
  164. 0x00008020, 0x08000000, 0x00000000, 0x00208000,
  165. 0x08200020, 0x08008020, 0x08008000, 0x00200020,
  166. 0x08208000, 0x00000020, 0x00200020, 0x08008000,
  167. 0x08208020, 0x00200000, 0x08200000, 0x08000020,
  168. 0x00208000, 0x00008020, 0x08008020, 0x08200000,
  169. 0x00000020, 0x08208000, 0x00208020, 0x00000000,
  170. 0x08000000, 0x08200020, 0x00008000, 0x00208020};
  171. static unsigned long skb[8][64]={
  172. /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
  173. 0x00000000,0x00000010,0x20000000,0x20000010,
  174. 0x00010000,0x00010010,0x20010000,0x20010010,
  175. 0x00000800,0x00000810,0x20000800,0x20000810,
  176. 0x00010800,0x00010810,0x20010800,0x20010810,
  177. 0x00000020,0x00000030,0x20000020,0x20000030,
  178. 0x00010020,0x00010030,0x20010020,0x20010030,
  179. 0x00000820,0x00000830,0x20000820,0x20000830,
  180. 0x00010820,0x00010830,0x20010820,0x20010830,
  181. 0x00080000,0x00080010,0x20080000,0x20080010,
  182. 0x00090000,0x00090010,0x20090000,0x20090010,
  183. 0x00080800,0x00080810,0x20080800,0x20080810,
  184. 0x00090800,0x00090810,0x20090800,0x20090810,
  185. 0x00080020,0x00080030,0x20080020,0x20080030,
  186. 0x00090020,0x00090030,0x20090020,0x20090030,
  187. 0x00080820,0x00080830,0x20080820,0x20080830,
  188. 0x00090820,0x00090830,0x20090820,0x20090830,
  189. /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
  190. 0x00000000,0x02000000,0x00002000,0x02002000,
  191. 0x00200000,0x02200000,0x00202000,0x02202000,
  192. 0x00000004,0x02000004,0x00002004,0x02002004,
  193. 0x00200004,0x02200004,0x00202004,0x02202004,
  194. 0x00000400,0x02000400,0x00002400,0x02002400,
  195. 0x00200400,0x02200400,0x00202400,0x02202400,
  196. 0x00000404,0x02000404,0x00002404,0x02002404,
  197. 0x00200404,0x02200404,0x00202404,0x02202404,
  198. 0x10000000,0x12000000,0x10002000,0x12002000,
  199. 0x10200000,0x12200000,0x10202000,0x12202000,
  200. 0x10000004,0x12000004,0x10002004,0x12002004,
  201. 0x10200004,0x12200004,0x10202004,0x12202004,
  202. 0x10000400,0x12000400,0x10002400,0x12002400,
  203. 0x10200400,0x12200400,0x10202400,0x12202400,
  204. 0x10000404,0x12000404,0x10002404,0x12002404,
  205. 0x10200404,0x12200404,0x10202404,0x12202404,
  206. /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
  207. 0x00000000,0x00000001,0x00040000,0x00040001,
  208. 0x01000000,0x01000001,0x01040000,0x01040001,
  209. 0x00000002,0x00000003,0x00040002,0x00040003,
  210. 0x01000002,0x01000003,0x01040002,0x01040003,
  211. 0x00000200,0x00000201,0x00040200,0x00040201,
  212. 0x01000200,0x01000201,0x01040200,0x01040201,
  213. 0x00000202,0x00000203,0x00040202,0x00040203,
  214. 0x01000202,0x01000203,0x01040202,0x01040203,
  215. 0x08000000,0x08000001,0x08040000,0x08040001,
  216. 0x09000000,0x09000001,0x09040000,0x09040001,
  217. 0x08000002,0x08000003,0x08040002,0x08040003,
  218. 0x09000002,0x09000003,0x09040002,0x09040003,
  219. 0x08000200,0x08000201,0x08040200,0x08040201,
  220. 0x09000200,0x09000201,0x09040200,0x09040201,
  221. 0x08000202,0x08000203,0x08040202,0x08040203,
  222. 0x09000202,0x09000203,0x09040202,0x09040203,
  223. /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
  224. 0x00000000,0x00100000,0x00000100,0x00100100,
  225. 0x00000008,0x00100008,0x00000108,0x00100108,
  226. 0x00001000,0x00101000,0x00001100,0x00101100,
  227. 0x00001008,0x00101008,0x00001108,0x00101108,
  228. 0x04000000,0x04100000,0x04000100,0x04100100,
  229. 0x04000008,0x04100008,0x04000108,0x04100108,
  230. 0x04001000,0x04101000,0x04001100,0x04101100,
  231. 0x04001008,0x04101008,0x04001108,0x04101108,
  232. 0x00020000,0x00120000,0x00020100,0x00120100,
  233. 0x00020008,0x00120008,0x00020108,0x00120108,
  234. 0x00021000,0x00121000,0x00021100,0x00121100,
  235. 0x00021008,0x00121008,0x00021108,0x00121108,
  236. 0x04020000,0x04120000,0x04020100,0x04120100,
  237. 0x04020008,0x04120008,0x04020108,0x04120108,
  238. 0x04021000,0x04121000,0x04021100,0x04121100,
  239. 0x04021008,0x04121008,0x04021108,0x04121108,
  240. /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
  241. 0x00000000,0x10000000,0x00010000,0x10010000,
  242. 0x00000004,0x10000004,0x00010004,0x10010004,
  243. 0x20000000,0x30000000,0x20010000,0x30010000,
  244. 0x20000004,0x30000004,0x20010004,0x30010004,
  245. 0x00100000,0x10100000,0x00110000,0x10110000,
  246. 0x00100004,0x10100004,0x00110004,0x10110004,
  247. 0x20100000,0x30100000,0x20110000,0x30110000,
  248. 0x20100004,0x30100004,0x20110004,0x30110004,
  249. 0x00001000,0x10001000,0x00011000,0x10011000,
  250. 0x00001004,0x10001004,0x00011004,0x10011004,
  251. 0x20001000,0x30001000,0x20011000,0x30011000,
  252. 0x20001004,0x30001004,0x20011004,0x30011004,
  253. 0x00101000,0x10101000,0x00111000,0x10111000,
  254. 0x00101004,0x10101004,0x00111004,0x10111004,
  255. 0x20101000,0x30101000,0x20111000,0x30111000,
  256. 0x20101004,0x30101004,0x20111004,0x30111004,
  257. /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
  258. 0x00000000,0x08000000,0x00000008,0x08000008,
  259. 0x00000400,0x08000400,0x00000408,0x08000408,
  260. 0x00020000,0x08020000,0x00020008,0x08020008,
  261. 0x00020400,0x08020400,0x00020408,0x08020408,
  262. 0x00000001,0x08000001,0x00000009,0x08000009,
  263. 0x00000401,0x08000401,0x00000409,0x08000409,
  264. 0x00020001,0x08020001,0x00020009,0x08020009,
  265. 0x00020401,0x08020401,0x00020409,0x08020409,
  266. 0x02000000,0x0A000000,0x02000008,0x0A000008,
  267. 0x02000400,0x0A000400,0x02000408,0x0A000408,
  268. 0x02020000,0x0A020000,0x02020008,0x0A020008,
  269. 0x02020400,0x0A020400,0x02020408,0x0A020408,
  270. 0x02000001,0x0A000001,0x02000009,0x0A000009,
  271. 0x02000401,0x0A000401,0x02000409,0x0A000409,
  272. 0x02020001,0x0A020001,0x02020009,0x0A020009,
  273. 0x02020401,0x0A020401,0x02020409,0x0A020409,
  274. /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
  275. 0x00000000,0x00000100,0x00080000,0x00080100,
  276. 0x01000000,0x01000100,0x01080000,0x01080100,
  277. 0x00000010,0x00000110,0x00080010,0x00080110,
  278. 0x01000010,0x01000110,0x01080010,0x01080110,
  279. 0x00200000,0x00200100,0x00280000,0x00280100,
  280. 0x01200000,0x01200100,0x01280000,0x01280100,
  281. 0x00200010,0x00200110,0x00280010,0x00280110,
  282. 0x01200010,0x01200110,0x01280010,0x01280110,
  283. 0x00000200,0x00000300,0x00080200,0x00080300,
  284. 0x01000200,0x01000300,0x01080200,0x01080300,
  285. 0x00000210,0x00000310,0x00080210,0x00080310,
  286. 0x01000210,0x01000310,0x01080210,0x01080310,
  287. 0x00200200,0x00200300,0x00280200,0x00280300,
  288. 0x01200200,0x01200300,0x01280200,0x01280300,
  289. 0x00200210,0x00200310,0x00280210,0x00280310,
  290. 0x01200210,0x01200310,0x01280210,0x01280310,
  291. /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
  292. 0x00000000,0x04000000,0x00040000,0x04040000,
  293. 0x00000002,0x04000002,0x00040002,0x04040002,
  294. 0x00002000,0x04002000,0x00042000,0x04042000,
  295. 0x00002002,0x04002002,0x00042002,0x04042002,
  296. 0x00000020,0x04000020,0x00040020,0x04040020,
  297. 0x00000022,0x04000022,0x00040022,0x04040022,
  298. 0x00002020,0x04002020,0x00042020,0x04042020,
  299. 0x00002022,0x04002022,0x00042022,0x04042022,
  300. 0x00000800,0x04000800,0x00040800,0x04040800,
  301. 0x00000802,0x04000802,0x00040802,0x04040802,
  302. 0x00002800,0x04002800,0x00042800,0x04042800,
  303. 0x00002802,0x04002802,0x00042802,0x04042802,
  304. 0x00000820,0x04000820,0x00040820,0x04040820,
  305. 0x00000822,0x04000822,0x00040822,0x04040822,
  306. 0x00002820,0x04002820,0x00042820,0x04042820,
  307. 0x00002822,0x04002822,0x00042822,0x04042822,
  308. };
  310. /* See ecb_encrypt.c for a pseudo description of these macros. */
  311. #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),
  312. (b)^=(t),
  313. (a)^=((t)<<(n)))
  315. #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),
  316. (a)=(a)^(t)^(t>>(16-(n))))
  318. static char shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
  320. static int body();
  321. static int des_set_key();
  323. static int des_set_key(des_cblock *key,des_key_schedule schedule)
  324. {
  325. register unsigned long c,d,t,s;
  326. register unsigned char *in;
  327. register unsigned long *k;
  328. register int i;
  330. k=(unsigned long *)schedule;
  331. in=(unsigned char *)key;
  333. c2l(in,c);
  334. c2l(in,d);
  336. /* I now do it in 47 simple operations :-)
  337.  * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
  338.  * for the inspiration. :-) */
  339. PERM_OP (d,c,t,4,0x0f0f0f0f);
  340. HPERM_OP(c,t,-2,0xcccc0000);
  341. HPERM_OP(d,t,-2,0xcccc0000);
  342. PERM_OP (d,c,t,1,0x55555555);
  343. PERM_OP (c,d,t,8,0x00ff00ff);
  344. PERM_OP (d,c,t,1,0x55555555);
  345. d= (((d&0x000000ff)<<16)| (d&0x0000ff00)     |
  346.  ((d&0x00ff0000)>>16)|((c&0xf0000000)>>4));
  347. c&=0x0fffffff;
  349. for (i=0; i<ITERATIONS; i++)
  350. {
  351. if (shifts2[i])
  352. { c=((c>>2)|(c<<26)); d=((d>>2)|(d<<26)); }
  353. else
  354. { c=((c>>1)|(c<<27)); d=((d>>1)|(d<<27)); }
  355. c&=0x0fffffff;
  356. d&=0x0fffffff;
  357. /* could be a few less shifts but I am to lazy at this
  358.  * point in time to investigate */
  359. s= skb[0][ (c    )&0x3f                ]|
  360. skb[1][((c>> 6)&0x03)|((c>> 7)&0x3c)]|
  361. skb[2][((c>>13)&0x0f)|((c>>14)&0x30)]|
  362. skb[3][((c>>20)&0x01)|((c>>21)&0x06) |
  363.                       ((c>>22)&0x38)];
  364. t= skb[4][ (d    )&0x3f                ]|
  365. skb[5][((d>> 7)&0x03)|((d>> 8)&0x3c)]|
  366. skb[6][ (d>>15)&0x3f                ]|
  367. skb[7][((d>>21)&0x0f)|((d>>22)&0x30)];
  369. /* table contained 0213 4657 */
  370. *(k++)=((t<<16)|(s&0x0000ffff))&0xffffffff;
  371. s=     ((s>>16)|(t&0xffff0000));
  373. s=(s<<4)|(s>>28);
  374. *(k++)=s&0xffffffff;
  375. }
  376. return(0);
  377. }
  379. /******************************************************************
  380.  * modified stuff for crypt.
  381.  ******************************************************************/
  383. /* The changes to this macro may help or hinder, depending on the
  384.  * compiler and the achitecture.  gcc2 always seems to do well :-). 
  385.  * Inspired by Dana How <how@isl.stanford.edu>
  386.  * DO NOT use the alternative version on machines with 8 byte longs.
  387.  */
  388. #ifdef ALT_ECB
  389. #define D_ENCRYPT(L,R,S) 
  390. v=(R^(R>>16)); 
  391. u=(v&E0); 
  392. v=(v&E1); 
  393. u=((u^(u<<16))^R^s[S  ])<<2; 
  394. t=(v^(v<<16))^R^s[S+1]; 
  395. t=(t>>2)|(t<<30); 
  396. L^= 
  397. *(unsigned long *)(des_SP+0x0100+((t    )&0xfc))+ 
  398. *(unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ 
  399. *(unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ 
  400. *(unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ 
  401. *(unsigned long *)(des_SP+       ((u    )&0xfc))+ 
  402.    *(unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ 
  403.    *(unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ 
  404.   *(unsigned long *)(des_SP+0x0600+((u>>24)&0xfc));
  405. #else /* original version */
  406. #define D_ENCRYPT(L,R,S)
  407. v=(R^(R>>16)); 
  408. u=(v&E0); 
  409. v=(v&E1); 
  410. u=(u^(u<<16))^R^s[S  ]; 
  411. t=(v^(v<<16))^R^s[S+1]; 
  412. t=(t>>4)|(t<<28); 
  413. L^= SPtrans[1][(t    )&0x3f]| 
  414. SPtrans[3][(t>> 8)&0x3f]| 
  415. SPtrans[5][(t>>16)&0x3f]| 
  416. SPtrans[7][(t>>24)&0x3f]| 
  417. SPtrans[0][(u    )&0x3f]| 
  418. SPtrans[2][(u>> 8)&0x3f]| 
  419. SPtrans[4][(u>>16)&0x3f]| 
  420. SPtrans[6][(u>>24)&0x3f];
  421. #endif
  423. unsigned char con_salt[128]={
  424. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  425. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  426. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  427. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  428. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  429. 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
  430. 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
  431. 0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
  432. 0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
  433. 0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
  434. 0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
  435. 0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
  436. 0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
  437. 0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
  438. 0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
  439. 0x3D,0x3E,0x3F,0x00,0x00,0x00,0x00,0x00,
  440. };
  442. unsigned char cov_2char[64]={
  443. 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
  444. 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
  445. 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
  446. 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
  447. 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
  448. 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
  449. 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
  450. 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
  451. };
  453. LPCSTR crypt(LPCSTR buf,LPCSTR argSalt, char *buff)
  454. {
  455. unsigned int i,j,x,y;
  456. unsigned long Eswap0=0,Eswap1=0;
  457. unsigned long out[2],ll;
  458. des_cblock key;
  459. des_key_schedule ks;
  460. //static unsigned char buff[20];
  461. char salt[4];
  462. unsigned char bb[9];
  463. unsigned char *b=bb;
  464. unsigned char c,u;
  466. strcpy(salt,argSalt);
  467. /* eay 25/08/92
  468.  * If you call crypt("pwd","*") as often happens when you
  469.  * have * as the pwd field in /etc/passwd, the function
  470.  * returns *XXXXXXXXX
  471.  * The  makes the string look like * so the pwd "*" would
  472.  * crypt to "*".  This was found when replacing the crypt in
  473.  * our shared libraries.  People found that the disbled
  474.  * accounts effectivly had no passwd :-(. */
  475. if (salt[0] == '') salt[0]='A';
  476. if (salt[1] == '') salt[1]='A';
  477. x=buff[0]=salt[0];
  478. Eswap0=con_salt[x];
  479. x=buff[1]=salt[1];
  480. Eswap1=con_salt[x]<<4;
  482. for (i=0; i<8; i++)
  483. {
  484. c= *(buf++);
  485. if (!c) break;
  486. key[i]=(c<<1);
  487. }
  488. for (; i<8; i++)
  489. key[i]=0;
  491. des_set_key((des_cblock *)(key),ks);
  492. body(&out[0],&out[1],(des_key_schedule *)ks,Eswap0,Eswap1);
  494. ll=out[0]; l2c(ll,b);
  495. ll=out[1]; l2c(ll,b);
  496. y=0;
  497. u=0x80;
  498. bb[8]=0;
  499. for (i=2; i<13; i++)
  500. {
  501. c=0;
  502. for (j=0; j<6; j++)
  503. {
  504. c<<=1;
  505. if (bb[y] & u) c|=1;
  506. u>>=1;
  507. if (!u)
  508. {
  509. y++;
  510. u=0x80;
  511. }
  512. }
  513. buff[i]=cov_2char[c];
  514. }
  515. buff[13] = 0;
  516. return((char *)buff);
  517. }
  519. static int body(unsigned long *out0, unsigned long *out1, des_key_schedule *ks,unsigned long Eswap0, unsigned long Eswap1)
  520. {
  521. register unsigned long l,r,t,u,v;
  522. #ifdef ALT_ECB
  523. register unsigned char *des_SP=(unsigned char *)SPtrans;
  524. #endif
  525. register unsigned long *s;
  526. register int i,j;
  527. register unsigned long E0,E1;
  529. l=0;
  530. r=0;
  532. s=(unsigned long *)ks;
  533. E0=Eswap0;
  534. E1=Eswap1;
  536. for (j=0; j<25; j++)
  537. {
  538. for (i=0; i<(ITERATIONS*2); i+=4)
  539. {
  540. D_ENCRYPT(l,r,  i); /*  1 */
  541. D_ENCRYPT(r,l,  i+2); /*  2 */
  542. }
  543. t=l;
  544. l=r;
  545. r=t;
  546. }
  547. t=r;
  548. r=(l>>1)|(l<<31);
  549. l=(t>>1)|(t<<31);
  550. /* clear the top bits on machines with 8byte longs */
  551. l&=0xffffffff;
  552. r&=0xffffffff;
  554. PERM_OP(r,l,t, 1,0x55555555);
  555. PERM_OP(l,r,t, 8,0x00ff00ff);
  556. PERM_OP(r,l,t, 2,0x33333333);
  557. PERM_OP(l,r,t,16,0x0000ffff);
  558. PERM_OP(r,l,t, 4,0x0f0f0f0f);
  560. *out0=l;
  561. *out1=r;
  562. return(0);
  563. }
  565. // End of bowwowed code
  566. // War spesific functions
  568. #ifdef _RUN_AS_APP
  569. main(int argc, char **argv)
  570. {
  571. char pwd[64], salt[64], *p;
  573. printf("Salt: ");
  574. gets(salt);
  575. printf("Password: ");
  576. gets(pwd);
  578. if ((p = crypt(pwd,salt)) == NULL)
  579. printf("Error. crypt returned NULLn");
  580. else
  581. printf("crypt returned [%s]n", p);
  584. return 0;
  585. }
  586. #endif
  589. // Check user password against UNIX (DES 13) encoded password
  590. // Password is a password in clear text
  591. // StoredPassword is a stored UNIX encoded password to compare agains
  592. BOOL IsDES13validPwd(LPCSTR Password, LPCSTR StoredPassword)
  593. {
  594. char Salt[4];
  595. LPCSTR EncodedPwd;
  596. char buf[20];
  598. if (!Password || !*Password || !StoredPassword || (strlen(StoredPassword) != 13))
  599. return FALSE; // Invalid password or stored password
  601. Salt[0] = StoredPassword[0];
  602. Salt[1] = StoredPassword[1];
  603. Salt[2] = 0;
  605. if ((EncodedPwd = crypt(Password,Salt,buf)) == NULL)
  606. return FALSE;
  608. if (strcmp(EncodedPwd,StoredPassword))
  609. return FALSE;
  611. return TRUE;
  612. }