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Diffstat (limited to 'src/lib/libcrypto/des/set_key.c')
-rw-r--r--src/lib/libcrypto/des/set_key.c199
1 files changed, 177 insertions, 22 deletions
diff --git a/src/lib/libcrypto/des/set_key.c b/src/lib/libcrypto/des/set_key.c
index bbdc71ba6b..09afd4fc03 100644
--- a/src/lib/libcrypto/des/set_key.c
+++ b/src/lib/libcrypto/des/set_key.c
@@ -64,12 +64,27 @@
64 * 1.0 First working version 64 * 1.0 First working version
65 */ 65 */
66#include "des_locl.h" 66#include "des_locl.h"
67#include "podd.h"
68#include "sk.h"
69 67
70static int check_parity(const_des_cblock *key);
71OPENSSL_GLOBAL int des_check_key=0; 68OPENSSL_GLOBAL int des_check_key=0;
72 69
70static const unsigned char odd_parity[256]={
71 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14,
72 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
73 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
74 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
75 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
76 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
77 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
78112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
79128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
80145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
81161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
82176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
83193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
84208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
85224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
86241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
87
73void des_set_odd_parity(des_cblock *key) 88void des_set_odd_parity(des_cblock *key)
74 { 89 {
75 int i; 90 int i;
@@ -78,7 +93,7 @@ void des_set_odd_parity(des_cblock *key)
78 (*key)[i]=odd_parity[(*key)[i]]; 93 (*key)[i]=odd_parity[(*key)[i]];
79 } 94 }
80 95
81static int check_parity(const_des_cblock *key) 96int des_check_key_parity(const_des_cblock *key)
82 { 97 {
83 int i; 98 int i;
84 99
@@ -145,6 +160,153 @@ int des_is_weak_key(const_des_cblock *key)
145#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ 160#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
146 (a)=(a)^(t)^(t>>(16-(n)))) 161 (a)=(a)^(t)^(t>>(16-(n))))
147 162
163static const DES_LONG des_skb[8][64]={
164 {
165 /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
166 0x00000000L,0x00000010L,0x20000000L,0x20000010L,
167 0x00010000L,0x00010010L,0x20010000L,0x20010010L,
168 0x00000800L,0x00000810L,0x20000800L,0x20000810L,
169 0x00010800L,0x00010810L,0x20010800L,0x20010810L,
170 0x00000020L,0x00000030L,0x20000020L,0x20000030L,
171 0x00010020L,0x00010030L,0x20010020L,0x20010030L,
172 0x00000820L,0x00000830L,0x20000820L,0x20000830L,
173 0x00010820L,0x00010830L,0x20010820L,0x20010830L,
174 0x00080000L,0x00080010L,0x20080000L,0x20080010L,
175 0x00090000L,0x00090010L,0x20090000L,0x20090010L,
176 0x00080800L,0x00080810L,0x20080800L,0x20080810L,
177 0x00090800L,0x00090810L,0x20090800L,0x20090810L,
178 0x00080020L,0x00080030L,0x20080020L,0x20080030L,
179 0x00090020L,0x00090030L,0x20090020L,0x20090030L,
180 0x00080820L,0x00080830L,0x20080820L,0x20080830L,
181 0x00090820L,0x00090830L,0x20090820L,0x20090830L,
182 },{
183 /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
184 0x00000000L,0x02000000L,0x00002000L,0x02002000L,
185 0x00200000L,0x02200000L,0x00202000L,0x02202000L,
186 0x00000004L,0x02000004L,0x00002004L,0x02002004L,
187 0x00200004L,0x02200004L,0x00202004L,0x02202004L,
188 0x00000400L,0x02000400L,0x00002400L,0x02002400L,
189 0x00200400L,0x02200400L,0x00202400L,0x02202400L,
190 0x00000404L,0x02000404L,0x00002404L,0x02002404L,
191 0x00200404L,0x02200404L,0x00202404L,0x02202404L,
192 0x10000000L,0x12000000L,0x10002000L,0x12002000L,
193 0x10200000L,0x12200000L,0x10202000L,0x12202000L,
194 0x10000004L,0x12000004L,0x10002004L,0x12002004L,
195 0x10200004L,0x12200004L,0x10202004L,0x12202004L,
196 0x10000400L,0x12000400L,0x10002400L,0x12002400L,
197 0x10200400L,0x12200400L,0x10202400L,0x12202400L,
198 0x10000404L,0x12000404L,0x10002404L,0x12002404L,
199 0x10200404L,0x12200404L,0x10202404L,0x12202404L,
200 },{
201 /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
202 0x00000000L,0x00000001L,0x00040000L,0x00040001L,
203 0x01000000L,0x01000001L,0x01040000L,0x01040001L,
204 0x00000002L,0x00000003L,0x00040002L,0x00040003L,
205 0x01000002L,0x01000003L,0x01040002L,0x01040003L,
206 0x00000200L,0x00000201L,0x00040200L,0x00040201L,
207 0x01000200L,0x01000201L,0x01040200L,0x01040201L,
208 0x00000202L,0x00000203L,0x00040202L,0x00040203L,
209 0x01000202L,0x01000203L,0x01040202L,0x01040203L,
210 0x08000000L,0x08000001L,0x08040000L,0x08040001L,
211 0x09000000L,0x09000001L,0x09040000L,0x09040001L,
212 0x08000002L,0x08000003L,0x08040002L,0x08040003L,
213 0x09000002L,0x09000003L,0x09040002L,0x09040003L,
214 0x08000200L,0x08000201L,0x08040200L,0x08040201L,
215 0x09000200L,0x09000201L,0x09040200L,0x09040201L,
216 0x08000202L,0x08000203L,0x08040202L,0x08040203L,
217 0x09000202L,0x09000203L,0x09040202L,0x09040203L,
218 },{
219 /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
220 0x00000000L,0x00100000L,0x00000100L,0x00100100L,
221 0x00000008L,0x00100008L,0x00000108L,0x00100108L,
222 0x00001000L,0x00101000L,0x00001100L,0x00101100L,
223 0x00001008L,0x00101008L,0x00001108L,0x00101108L,
224 0x04000000L,0x04100000L,0x04000100L,0x04100100L,
225 0x04000008L,0x04100008L,0x04000108L,0x04100108L,
226 0x04001000L,0x04101000L,0x04001100L,0x04101100L,
227 0x04001008L,0x04101008L,0x04001108L,0x04101108L,
228 0x00020000L,0x00120000L,0x00020100L,0x00120100L,
229 0x00020008L,0x00120008L,0x00020108L,0x00120108L,
230 0x00021000L,0x00121000L,0x00021100L,0x00121100L,
231 0x00021008L,0x00121008L,0x00021108L,0x00121108L,
232 0x04020000L,0x04120000L,0x04020100L,0x04120100L,
233 0x04020008L,0x04120008L,0x04020108L,0x04120108L,
234 0x04021000L,0x04121000L,0x04021100L,0x04121100L,
235 0x04021008L,0x04121008L,0x04021108L,0x04121108L,
236 },{
237 /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
238 0x00000000L,0x10000000L,0x00010000L,0x10010000L,
239 0x00000004L,0x10000004L,0x00010004L,0x10010004L,
240 0x20000000L,0x30000000L,0x20010000L,0x30010000L,
241 0x20000004L,0x30000004L,0x20010004L,0x30010004L,
242 0x00100000L,0x10100000L,0x00110000L,0x10110000L,
243 0x00100004L,0x10100004L,0x00110004L,0x10110004L,
244 0x20100000L,0x30100000L,0x20110000L,0x30110000L,
245 0x20100004L,0x30100004L,0x20110004L,0x30110004L,
246 0x00001000L,0x10001000L,0x00011000L,0x10011000L,
247 0x00001004L,0x10001004L,0x00011004L,0x10011004L,
248 0x20001000L,0x30001000L,0x20011000L,0x30011000L,
249 0x20001004L,0x30001004L,0x20011004L,0x30011004L,
250 0x00101000L,0x10101000L,0x00111000L,0x10111000L,
251 0x00101004L,0x10101004L,0x00111004L,0x10111004L,
252 0x20101000L,0x30101000L,0x20111000L,0x30111000L,
253 0x20101004L,0x30101004L,0x20111004L,0x30111004L,
254 },{
255 /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
256 0x00000000L,0x08000000L,0x00000008L,0x08000008L,
257 0x00000400L,0x08000400L,0x00000408L,0x08000408L,
258 0x00020000L,0x08020000L,0x00020008L,0x08020008L,
259 0x00020400L,0x08020400L,0x00020408L,0x08020408L,
260 0x00000001L,0x08000001L,0x00000009L,0x08000009L,
261 0x00000401L,0x08000401L,0x00000409L,0x08000409L,
262 0x00020001L,0x08020001L,0x00020009L,0x08020009L,
263 0x00020401L,0x08020401L,0x00020409L,0x08020409L,
264 0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
265 0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
266 0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
267 0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
268 0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
269 0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
270 0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
271 0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
272 },{
273 /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
274 0x00000000L,0x00000100L,0x00080000L,0x00080100L,
275 0x01000000L,0x01000100L,0x01080000L,0x01080100L,
276 0x00000010L,0x00000110L,0x00080010L,0x00080110L,
277 0x01000010L,0x01000110L,0x01080010L,0x01080110L,
278 0x00200000L,0x00200100L,0x00280000L,0x00280100L,
279 0x01200000L,0x01200100L,0x01280000L,0x01280100L,
280 0x00200010L,0x00200110L,0x00280010L,0x00280110L,
281 0x01200010L,0x01200110L,0x01280010L,0x01280110L,
282 0x00000200L,0x00000300L,0x00080200L,0x00080300L,
283 0x01000200L,0x01000300L,0x01080200L,0x01080300L,
284 0x00000210L,0x00000310L,0x00080210L,0x00080310L,
285 0x01000210L,0x01000310L,0x01080210L,0x01080310L,
286 0x00200200L,0x00200300L,0x00280200L,0x00280300L,
287 0x01200200L,0x01200300L,0x01280200L,0x01280300L,
288 0x00200210L,0x00200310L,0x00280210L,0x00280310L,
289 0x01200210L,0x01200310L,0x01280210L,0x01280310L,
290 },{
291 /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
292 0x00000000L,0x04000000L,0x00040000L,0x04040000L,
293 0x00000002L,0x04000002L,0x00040002L,0x04040002L,
294 0x00002000L,0x04002000L,0x00042000L,0x04042000L,
295 0x00002002L,0x04002002L,0x00042002L,0x04042002L,
296 0x00000020L,0x04000020L,0x00040020L,0x04040020L,
297 0x00000022L,0x04000022L,0x00040022L,0x04040022L,
298 0x00002020L,0x04002020L,0x00042020L,0x04042020L,
299 0x00002022L,0x04002022L,0x00042022L,0x04042022L,
300 0x00000800L,0x04000800L,0x00040800L,0x04040800L,
301 0x00000802L,0x04000802L,0x00040802L,0x04040802L,
302 0x00002800L,0x04002800L,0x00042800L,0x04042800L,
303 0x00002802L,0x04002802L,0x00042802L,0x04042802L,
304 0x00000820L,0x04000820L,0x00040820L,0x04040820L,
305 0x00000822L,0x04000822L,0x00040822L,0x04040822L,
306 0x00002820L,0x04002820L,0x00042820L,0x04042820L,
307 0x00002822L,0x04002822L,0x00042822L,0x04042822L,
308 }};
309
148int des_set_key(const_des_cblock *key, des_key_schedule schedule) 310int des_set_key(const_des_cblock *key, des_key_schedule schedule)
149 { 311 {
150 if (des_check_key) 312 if (des_check_key)
@@ -164,7 +326,7 @@ int des_set_key(const_des_cblock *key, des_key_schedule schedule)
164 */ 326 */
165int des_set_key_checked(const_des_cblock *key, des_key_schedule schedule) 327int des_set_key_checked(const_des_cblock *key, des_key_schedule schedule)
166 { 328 {
167 if (!check_parity(key)) 329 if (!des_check_key_parity(key))
168 return(-1); 330 return(-1);
169 if (des_is_weak_key(key)) 331 if (des_is_weak_key(key))
170 return(-2); 332 return(-2);
@@ -186,20 +348,7 @@ void des_set_key_unchecked(const_des_cblock *key, des_key_schedule schedule)
186 c2l(in,c); 348 c2l(in,c);
187 c2l(in,d); 349 c2l(in,d);
188 350
189 /* do PC1 in 60 simple operations */ 351 /* do PC1 in 47 simple operations :-)
190/* PERM_OP(d,c,t,4,0x0f0f0f0fL);
191 HPERM_OP(c,t,-2, 0xcccc0000L);
192 HPERM_OP(c,t,-1, 0xaaaa0000L);
193 HPERM_OP(c,t, 8, 0x00ff0000L);
194 HPERM_OP(c,t,-1, 0xaaaa0000L);
195 HPERM_OP(d,t,-8, 0xff000000L);
196 HPERM_OP(d,t, 8, 0x00ff0000L);
197 HPERM_OP(d,t, 2, 0x33330000L);
198 d=((d&0x00aa00aaL)<<7L)|((d&0x55005500L)>>7L)|(d&0xaa55aa55L);
199 d=(d>>8)|((c&0xf0000000L)>>4);
200 c&=0x0fffffffL; */
201
202 /* I now do it in 47 simple operations :-)
203 * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) 352 * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
204 * for the inspiration. :-) */ 353 * for the inspiration. :-) */
205 PERM_OP (d,c,t,4,0x0f0f0f0fL); 354 PERM_OP (d,c,t,4,0x0f0f0f0fL);
@@ -223,9 +372,9 @@ void des_set_key_unchecked(const_des_cblock *key, des_key_schedule schedule)
223 /* could be a few less shifts but I am to lazy at this 372 /* could be a few less shifts but I am to lazy at this
224 * point in time to investigate */ 373 * point in time to investigate */
225 s= des_skb[0][ (c )&0x3f ]| 374 s= des_skb[0][ (c )&0x3f ]|
226 des_skb[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]| 375 des_skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]|
227 des_skb[2][((c>>13)&0x0f)|((c>>14L)&0x30)]| 376 des_skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]|
228 des_skb[3][((c>>20)&0x01)|((c>>21L)&0x06) | 377 des_skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) |
229 ((c>>22L)&0x38)]; 378 ((c>>22L)&0x38)];
230 t= des_skb[4][ (d )&0x3f ]| 379 t= des_skb[4][ (d )&0x3f ]|
231 des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]| 380 des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
@@ -245,3 +394,9 @@ int des_key_sched(const_des_cblock *key, des_key_schedule schedule)
245 { 394 {
246 return(des_set_key(key,schedule)); 395 return(des_set_key(key,schedule));
247 } 396 }
397
398#undef des_fixup_key_parity
399void des_fixup_key_parity(des_cblock *key)
400 {
401 des_set_odd_parity(key);
402 }