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35 * @page page_des DES - Data Encryption Standard crypto interface
37 * See the library functions here: @ref hcrypto_des
39 * DES was created by IBM, modififed by NSA and then adopted by NBS
40 * (now NIST) and published ad FIPS PUB 46 (updated by FIPS 46-1).
42 * Since the 19th May 2005 DES was withdrawn by NIST and should no
43 * longer be used. See @ref page_evp for replacement encryption
44 * algorithms and interfaces.
46 * Read more the iteresting history of DES on Wikipedia
47 * http://www.wikipedia.org/wiki/Data_Encryption_Standard .
49 * @section des_keygen DES key generation
51 * To generate a DES key safely you have to use the code-snippet
52 * below. This is because the DES_random_key() can fail with an
53 * abort() in case of and failure to start the random generator.
55 * There is a replacement function DES_new_random_key(), however that
56 * function does not exists in OpenSSL.
61 * if (RAND_rand(&key, sizeof(key)) != 1)
63 * DES_set_odd_parity(key);
64 * } while (DES_is_weak_key(&key));
67 * @section des_impl DES implementation history
69 * There was no complete BSD licensed, fast, GPL compatible
70 * implementation of DES, so Love wrote the part that was missing,
71 * fast key schedule setup and adapted the interface to the orignal
74 * The document that got me started for real was "Efficient
75 * Implementation of the Data Encryption Standard" by Dag Arne Osvik.
76 * I never got to the PC1 transformation was working, instead I used
77 * table-lookup was used for all key schedule setup. The document was
78 * very useful since it de-mystified other implementations for me.
80 * The core DES function (SBOX + P transformation) is from Richard
81 * Outerbridge public domain DES implementation. My sanity is saved
82 * thanks to his work. Thank you Richard.
92 #include <krb5-types.h>
100 static void desx(uint32_t [2], DES_key_schedule *, int);
101 static void IP(uint32_t [2]);
102 static void FP(uint32_t [2]);
104 #include "des-tables.h"
106 #define ROTATE_LEFT28(x,one) \
108 x = ( ((x)<<(1)) & 0xffffffe) | ((x) >> 27); \
110 x = ( ((x)<<(2)) & 0xffffffc) | ((x) >> 26); \
114 * Set the parity of the key block, used to generate a des key from a
115 * random key. See @ref des_keygen.
117 * @param key key to fixup the parity for.
118 * @ingroup hcrypto_des
122 DES_set_odd_parity(DES_cblock *key)
125 for (i = 0; i < DES_CBLOCK_LEN; i++)
126 (*key)[i] = odd_parity[(*key)[i]];
130 * Check if the key have correct parity.
132 * @param key key to check the parity.
133 * @return 1 on success, 0 on failure.
134 * @ingroup hcrypto_des
138 DES_check_key_parity(DES_cblock *key)
142 for (i = 0; i < DES_CBLOCK_LEN; i++)
143 if ((*key)[i] != odd_parity[(*key)[i]])
153 static DES_cblock weak_keys[] = {
154 {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01}, /* weak keys */
155 {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
156 {0x1F,0x1F,0x1F,0x1F,0x0E,0x0E,0x0E,0x0E},
157 {0xE0,0xE0,0xE0,0xE0,0xF1,0xF1,0xF1,0xF1},
158 {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE}, /* semi-weak keys */
159 {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
160 {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
161 {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
162 {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
163 {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
164 {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
165 {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
166 {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
167 {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
168 {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
169 {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}
173 * Checks if the key is any of the weaks keys that makes DES attacks
176 * @param key key to check.
178 * @return 1 if the key is weak, 0 otherwise.
179 * @ingroup hcrypto_des
183 DES_is_weak_key(DES_cblock *key)
188 for (i = 0; i < sizeof(weak_keys)/sizeof(weak_keys[0]); i++)
189 weak ^= (ct_memcmp(weak_keys[i], key, DES_CBLOCK_LEN) == 0);
195 * Setup a des key schedule from a key. Deprecated function, use
196 * DES_set_key_unchecked() or DES_set_key_checked() instead.
198 * @param key a key to initialize the key schedule with.
199 * @param ks a key schedule to initialize.
201 * @return 0 on success
202 * @ingroup hcrypto_des
206 DES_set_key(DES_cblock *key, DES_key_schedule *ks)
208 return DES_set_key_checked(key, ks);
212 * Setup a des key schedule from a key. The key is no longer needed
213 * after this transaction and can cleared.
215 * Does NOT check that the key is weak for or have wrong parity.
217 * @param key a key to initialize the key schedule with.
218 * @param ks a key schedule to initialize.
220 * @return 0 on success
221 * @ingroup hcrypto_des
225 DES_set_key_unchecked(DES_cblock *key, DES_key_schedule *ks)
229 int shifts[16] = { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1 };
230 uint32_t *k = &ks->ks[0];
233 t1 = (*key)[0] << 24 | (*key)[1] << 16 | (*key)[2] << 8 | (*key)[3];
234 t2 = (*key)[4] << 24 | (*key)[5] << 16 | (*key)[6] << 8 | (*key)[7];
236 c = (pc1_c_3[(t1 >> (5 )) & 0x7] << 3)
237 | (pc1_c_3[(t1 >> (5 + 8 )) & 0x7] << 2)
238 | (pc1_c_3[(t1 >> (5 + 8 + 8 )) & 0x7] << 1)
239 | (pc1_c_3[(t1 >> (5 + 8 + 8 + 8)) & 0x7] << 0)
240 | (pc1_c_4[(t2 >> (4 )) & 0xf] << 3)
241 | (pc1_c_4[(t2 >> (4 + 8 )) & 0xf] << 2)
242 | (pc1_c_4[(t2 >> (4 + 8 + 8 )) & 0xf] << 1)
243 | (pc1_c_4[(t2 >> (4 + 8 + 8 + 8)) & 0xf] << 0);
246 d = (pc1_d_3[(t2 >> (1 )) & 0x7] << 3)
247 | (pc1_d_3[(t2 >> (1 + 8 )) & 0x7] << 2)
248 | (pc1_d_3[(t2 >> (1 + 8 + 8 )) & 0x7] << 1)
249 | (pc1_d_3[(t2 >> (1 + 8 + 8 + 8)) & 0x7] << 0)
250 | (pc1_d_4[(t1 >> (1 )) & 0xf] << 3)
251 | (pc1_d_4[(t1 >> (1 + 8 )) & 0xf] << 2)
252 | (pc1_d_4[(t1 >> (1 + 8 + 8 )) & 0xf] << 1)
253 | (pc1_d_4[(t1 >> (1 + 8 + 8 + 8)) & 0xf] << 0);
255 for (i = 0; i < 16; i++) {
258 ROTATE_LEFT28(c, shifts[i]);
259 ROTATE_LEFT28(d, shifts[i]);
261 kc = pc2_c_1[(c >> 22) & 0x3f] |
262 pc2_c_2[((c >> 16) & 0x30) | ((c >> 15) & 0xf)] |
263 pc2_c_3[((c >> 9 ) & 0x3c) | ((c >> 8 ) & 0x3)] |
264 pc2_c_4[((c >> 2 ) & 0x20) | ((c >> 1) & 0x18) | (c & 0x7)];
265 kd = pc2_d_1[(d >> 22) & 0x3f] |
266 pc2_d_2[((d >> 15) & 0x30) | ((d >> 14) & 0xf)] |
267 pc2_d_3[ (d >> 7 ) & 0x3f] |
268 pc2_d_4[((d >> 1 ) & 0x3c) | ((d ) & 0x3)];
270 /* Change to byte order used by the S boxes */
271 *k = (kc & 0x00fc0000L) << 6;
272 *k |= (kc & 0x00000fc0L) << 10;
273 *k |= (kd & 0x00fc0000L) >> 10;
274 *k++ |= (kd & 0x00000fc0L) >> 6;
275 *k = (kc & 0x0003f000L) << 12;
276 *k |= (kc & 0x0000003fL) << 16;
277 *k |= (kd & 0x0003f000L) >> 4;
278 *k++ |= (kd & 0x0000003fL);
285 * Just like DES_set_key_unchecked() except checking that the key is
286 * not weak for or have correct parity.
288 * @param key a key to initialize the key schedule with.
289 * @param ks a key schedule to initialize.
291 * @return 0 on success, -1 on invalid parity, -2 on weak key.
292 * @ingroup hcrypto_des
296 DES_set_key_checked(DES_cblock *key, DES_key_schedule *ks)
298 if (!DES_check_key_parity(key)) {
299 memset(ks, 0, sizeof(*ks));
302 if (DES_is_weak_key(key)) {
303 memset(ks, 0, sizeof(*ks));
306 return DES_set_key_unchecked(key, ks);
310 * Compatibility function for eay libdes, works just like
311 * DES_set_key_checked().
313 * @param key a key to initialize the key schedule with.
314 * @param ks a key schedule to initialize.
316 * @return 0 on success, -1 on invalid parity, -2 on weak key.
317 * @ingroup hcrypto_des
321 DES_key_sched(DES_cblock *key, DES_key_schedule *ks)
323 return DES_set_key_checked(key, ks);
331 load(const unsigned char *b, uint32_t v[2])
344 store(const uint32_t v[2], unsigned char *b)
346 b[0] = (v[0] >> 24) & 0xff;
347 b[1] = (v[0] >> 16) & 0xff;
348 b[2] = (v[0] >> 8) & 0xff;
349 b[3] = (v[0] >> 0) & 0xff;
350 b[4] = (v[1] >> 24) & 0xff;
351 b[5] = (v[1] >> 16) & 0xff;
352 b[6] = (v[1] >> 8) & 0xff;
353 b[7] = (v[1] >> 0) & 0xff;
357 * Encrypt/decrypt a block using DES. Also called ECB mode
359 * @param u data to encrypt
360 * @param ks key schedule to use
361 * @param encp if non zero, encrypt. if zero, decrypt.
363 * @ingroup hcrypto_des
367 DES_encrypt(uint32_t u[2], DES_key_schedule *ks, int encp)
375 * Encrypt/decrypt a block using DES.
377 * @param input data to encrypt
378 * @param output data to encrypt
379 * @param ks key schedule to use
380 * @param encp if non zero, encrypt. if zero, decrypt.
382 * @ingroup hcrypto_des
386 DES_ecb_encrypt(DES_cblock *input, DES_cblock *output,
387 DES_key_schedule *ks, int encp)
391 DES_encrypt(u, ks, encp);
396 * Encrypt/decrypt a block using DES in Chain Block Cipher mode (cbc).
398 * The IV must always be diffrent for diffrent input data blocks.
400 * @param in data to encrypt
401 * @param out data to encrypt
402 * @param length length of data
403 * @param ks key schedule to use
404 * @param iv initial vector to use
405 * @param encp if non zero, encrypt. if zero, decrypt.
407 * @ingroup hcrypto_des
411 DES_cbc_encrypt(const void *in, void *out, long length,
412 DES_key_schedule *ks, DES_cblock *iv, int encp)
414 const unsigned char *input = in;
415 unsigned char *output = out;
422 while (length >= DES_CBLOCK_LEN) {
424 u[0] ^= uiv[0]; u[1] ^= uiv[1];
425 DES_encrypt(u, ks, 1);
426 uiv[0] = u[0]; uiv[1] = u[1];
429 length -= DES_CBLOCK_LEN;
430 input += DES_CBLOCK_LEN;
431 output += DES_CBLOCK_LEN;
434 unsigned char tmp[DES_CBLOCK_LEN];
435 memcpy(tmp, input, length);
436 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
438 u[0] ^= uiv[0]; u[1] ^= uiv[1];
439 DES_encrypt(u, ks, 1);
444 while (length >= DES_CBLOCK_LEN) {
446 t[0] = u[0]; t[1] = u[1];
447 DES_encrypt(u, ks, 0);
448 u[0] ^= uiv[0]; u[1] ^= uiv[1];
450 uiv[0] = t[0]; uiv[1] = t[1];
452 length -= DES_CBLOCK_LEN;
453 input += DES_CBLOCK_LEN;
454 output += DES_CBLOCK_LEN;
457 unsigned char tmp[DES_CBLOCK_LEN];
458 memcpy(tmp, input, length);
459 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
461 DES_encrypt(u, ks, 0);
462 u[0] ^= uiv[0]; u[1] ^= uiv[1];
466 uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
470 * Encrypt/decrypt a block using DES in Propagating Cipher Block
471 * Chaining mode. This mode is only used for Kerberos 4, and it should
474 * The IV must always be diffrent for diffrent input data blocks.
476 * @param in data to encrypt
477 * @param out data to encrypt
478 * @param length length of data
479 * @param ks key schedule to use
480 * @param iv initial vector to use
481 * @param encp if non zero, encrypt. if zero, decrypt.
483 * @ingroup hcrypto_des
487 DES_pcbc_encrypt(const void *in, void *out, long length,
488 DES_key_schedule *ks, DES_cblock *iv, int encp)
490 const unsigned char *input = in;
491 unsigned char *output = out;
499 while (length >= DES_CBLOCK_LEN) {
501 t[0] = u[0]; t[1] = u[1];
502 u[0] ^= uiv[0]; u[1] ^= uiv[1];
503 DES_encrypt(u, ks, 1);
504 uiv[0] = u[0] ^ t[0]; uiv[1] = u[1] ^ t[1];
507 length -= DES_CBLOCK_LEN;
508 input += DES_CBLOCK_LEN;
509 output += DES_CBLOCK_LEN;
512 unsigned char tmp[DES_CBLOCK_LEN];
513 memcpy(tmp, input, length);
514 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
516 u[0] ^= uiv[0]; u[1] ^= uiv[1];
517 DES_encrypt(u, ks, 1);
522 while (length >= DES_CBLOCK_LEN) {
524 t[0] = u[0]; t[1] = u[1];
525 DES_encrypt(u, ks, 0);
526 u[0] ^= uiv[0]; u[1] ^= uiv[1];
528 uiv[0] = t[0] ^ u[0]; uiv[1] = t[1] ^ u[1];
530 length -= DES_CBLOCK_LEN;
531 input += DES_CBLOCK_LEN;
532 output += DES_CBLOCK_LEN;
535 unsigned char tmp[DES_CBLOCK_LEN];
536 memcpy(tmp, input, length);
537 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
539 DES_encrypt(u, ks, 0);
540 u[0] ^= uiv[0]; u[1] ^= uiv[1];
543 uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
551 _des3_encrypt(uint32_t u[2], DES_key_schedule *ks1, DES_key_schedule *ks2,
552 DES_key_schedule *ks3, int encp)
556 desx(u, ks1, 1); /* IP + FP cancel out each other */
568 * Encrypt/decrypt a block using triple DES using EDE mode,
569 * encrypt/decrypt/encrypt.
571 * @param input data to encrypt
572 * @param output data to encrypt
573 * @param ks1 key schedule to use
574 * @param ks2 key schedule to use
575 * @param ks3 key schedule to use
576 * @param encp if non zero, encrypt. if zero, decrypt.
578 * @ingroup hcrypto_des
582 DES_ecb3_encrypt(DES_cblock *input,
584 DES_key_schedule *ks1,
585 DES_key_schedule *ks2,
586 DES_key_schedule *ks3,
591 _des3_encrypt(u, ks1, ks2, ks3, encp);
597 * Encrypt/decrypt using Triple DES in Chain Block Cipher mode (cbc).
599 * The IV must always be diffrent for diffrent input data blocks.
601 * @param in data to encrypt
602 * @param out data to encrypt
603 * @param length length of data
604 * @param ks1 key schedule to use
605 * @param ks2 key schedule to use
606 * @param ks3 key schedule to use
607 * @param iv initial vector to use
608 * @param encp if non zero, encrypt. if zero, decrypt.
610 * @ingroup hcrypto_des
614 DES_ede3_cbc_encrypt(const void *in, void *out,
615 long length, DES_key_schedule *ks1,
616 DES_key_schedule *ks2, DES_key_schedule *ks3,
617 DES_cblock *iv, int encp)
619 const unsigned char *input = in;
620 unsigned char *output = out;
627 while (length >= DES_CBLOCK_LEN) {
629 u[0] ^= uiv[0]; u[1] ^= uiv[1];
630 _des3_encrypt(u, ks1, ks2, ks3, 1);
631 uiv[0] = u[0]; uiv[1] = u[1];
634 length -= DES_CBLOCK_LEN;
635 input += DES_CBLOCK_LEN;
636 output += DES_CBLOCK_LEN;
639 unsigned char tmp[DES_CBLOCK_LEN];
640 memcpy(tmp, input, length);
641 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
643 u[0] ^= uiv[0]; u[1] ^= uiv[1];
644 _des3_encrypt(u, ks1, ks2, ks3, 1);
649 while (length >= DES_CBLOCK_LEN) {
651 t[0] = u[0]; t[1] = u[1];
652 _des3_encrypt(u, ks1, ks2, ks3, 0);
653 u[0] ^= uiv[0]; u[1] ^= uiv[1];
655 uiv[0] = t[0]; uiv[1] = t[1];
657 length -= DES_CBLOCK_LEN;
658 input += DES_CBLOCK_LEN;
659 output += DES_CBLOCK_LEN;
662 unsigned char tmp[DES_CBLOCK_LEN];
663 memcpy(tmp, input, length);
664 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
666 _des3_encrypt(u, ks1, ks2, ks3, 0);
667 u[0] ^= uiv[0]; u[1] ^= uiv[1];
672 uiv[0] = 0; u[0] = 0; uiv[1] = 0; u[1] = 0;
676 * Encrypt/decrypt using DES in cipher feedback mode with 64 bit
679 * The IV must always be diffrent for diffrent input data blocks.
681 * @param in data to encrypt
682 * @param out data to encrypt
683 * @param length length of data
684 * @param ks key schedule to use
685 * @param iv initial vector to use
686 * @param num offset into in cipher block encryption/decryption stop last time.
687 * @param encp if non zero, encrypt. if zero, decrypt.
689 * @ingroup hcrypto_des
693 DES_cfb64_encrypt(const void *in, void *out,
694 long length, DES_key_schedule *ks, DES_cblock *iv,
697 const unsigned char *input = in;
698 unsigned char *output = out;
699 unsigned char tmp[DES_CBLOCK_LEN];
704 assert(*num >= 0 && *num < DES_CBLOCK_LEN);
711 DES_encrypt(uiv, ks, 1);
713 for (; i < DES_CBLOCK_LEN && i < length; i++) {
714 output[i] = tmp[i] ^ input[i];
716 if (i == DES_CBLOCK_LEN)
721 if (i == DES_CBLOCK_LEN)
732 DES_encrypt(uiv, ks, 1);
735 for (; i < DES_CBLOCK_LEN && i < length; i++) {
737 output[i] = tmp[i] ^ input[i];
743 if (i == DES_CBLOCK_LEN) {
754 * Crete a checksum using DES in CBC encryption mode. This mode is
755 * only used for Kerberos 4, and it should stay that way.
757 * The IV must always be diffrent for diffrent input data blocks.
759 * @param in data to checksum
760 * @param output the checksum
761 * @param length length of data
762 * @param ks key schedule to use
763 * @param iv initial vector to use
765 * @ingroup hcrypto_des
769 DES_cbc_cksum(const void *in, DES_cblock *output,
770 long length, DES_key_schedule *ks, DES_cblock *iv)
772 const unsigned char *input = in;
774 uint32_t u[2] = { 0, 0 };
778 while (length >= DES_CBLOCK_LEN) {
780 u[0] ^= uiv[0]; u[1] ^= uiv[1];
781 DES_encrypt(u, ks, 1);
782 uiv[0] = u[0]; uiv[1] = u[1];
784 length -= DES_CBLOCK_LEN;
785 input += DES_CBLOCK_LEN;
788 unsigned char tmp[DES_CBLOCK_LEN];
789 memcpy(tmp, input, length);
790 memset(tmp + length, 0, DES_CBLOCK_LEN - length);
792 u[0] ^= uiv[0]; u[1] ^= uiv[1];
793 DES_encrypt(u, ks, 1);
798 uiv[0] = 0; u[0] = 0; uiv[1] = 0;
807 bitswap8(unsigned char b)
811 for (i = 0; i < 8; i++) {
812 r = r << 1 | (b & 1);
819 * Convert a string to a DES key. Use something like
820 * PKCS5_PBKDF2_HMAC_SHA1() to create key from passwords.
822 * @param str The string to convert to a key
823 * @param key the resulting key
825 * @ingroup hcrypto_des
829 DES_string_to_key(const char *str, DES_cblock *key)
831 const unsigned char *s;
836 memset(key, 0, sizeof(*key));
838 s = (const unsigned char *)str;
841 for (i = 0; i < len; i++) {
843 k[i % 8] ^= s[i] << 1;
845 k[7 - (i % 8)] ^= bitswap8(s[i]);
847 DES_set_odd_parity(key);
848 if (DES_is_weak_key(key))
850 DES_set_key(key, &ks);
851 DES_cbc_cksum(s, key, len, &ks, key);
852 memset(&ks, 0, sizeof(ks));
853 DES_set_odd_parity(key);
854 if (DES_is_weak_key(key))
859 * Read password from prompt and create a DES key. Internal uses
860 * DES_string_to_key(). Really, go use a really string2key function
861 * like PKCS5_PBKDF2_HMAC_SHA1().
863 * @param key key to convert to
864 * @param prompt prompt to display user
865 * @param verify prompt twice.
867 * @return 1 on success, non 1 on failure.
871 DES_read_password(DES_cblock *key, char *prompt, int verify)
876 ret = UI_UTIL_read_pw_string(buf, sizeof(buf) - 1, prompt, verify);
878 DES_string_to_key(buf, key);
890 DES_cblock k = "\x01\x02\x04\x08\x10\x20\x40\x80", k2;
891 uint32_t u[2] = { 1, 0 };
896 if (u[0] != 1 || u[1] != 0)
901 if (memcmp(k, k2, 8) != 0)
907 * A portable, public domain, version of the Data Encryption Standard.
909 * Written with Symantec's THINK (Lightspeed) C by Richard Outerbridge.
910 * Thanks to: Dan Hoey for his excellent Initial and Inverse permutation
911 * code; Jim Gillogly & Phil Karn for the DES key schedule code; Dennis
912 * Ferguson, Eric Young and Dana How for comparing notes; and Ray Lau,
913 * for humouring me on.
915 * Copyright (c) 1988,1989,1990,1991,1992 by Richard Outerbridge.
916 * (GEnie : OUTER; CIS : [71755,204]) Graven Imagery, 1992.
919 static uint32_t SP1[64] = {
920 0x01010400L, 0x00000000L, 0x00010000L, 0x01010404L,
921 0x01010004L, 0x00010404L, 0x00000004L, 0x00010000L,
922 0x00000400L, 0x01010400L, 0x01010404L, 0x00000400L,
923 0x01000404L, 0x01010004L, 0x01000000L, 0x00000004L,
924 0x00000404L, 0x01000400L, 0x01000400L, 0x00010400L,
925 0x00010400L, 0x01010000L, 0x01010000L, 0x01000404L,
926 0x00010004L, 0x01000004L, 0x01000004L, 0x00010004L,
927 0x00000000L, 0x00000404L, 0x00010404L, 0x01000000L,
928 0x00010000L, 0x01010404L, 0x00000004L, 0x01010000L,
929 0x01010400L, 0x01000000L, 0x01000000L, 0x00000400L,
930 0x01010004L, 0x00010000L, 0x00010400L, 0x01000004L,
931 0x00000400L, 0x00000004L, 0x01000404L, 0x00010404L,
932 0x01010404L, 0x00010004L, 0x01010000L, 0x01000404L,
933 0x01000004L, 0x00000404L, 0x00010404L, 0x01010400L,
934 0x00000404L, 0x01000400L, 0x01000400L, 0x00000000L,
935 0x00010004L, 0x00010400L, 0x00000000L, 0x01010004L };
937 static uint32_t SP2[64] = {
938 0x80108020L, 0x80008000L, 0x00008000L, 0x00108020L,
939 0x00100000L, 0x00000020L, 0x80100020L, 0x80008020L,
940 0x80000020L, 0x80108020L, 0x80108000L, 0x80000000L,
941 0x80008000L, 0x00100000L, 0x00000020L, 0x80100020L,
942 0x00108000L, 0x00100020L, 0x80008020L, 0x00000000L,
943 0x80000000L, 0x00008000L, 0x00108020L, 0x80100000L,
944 0x00100020L, 0x80000020L, 0x00000000L, 0x00108000L,
945 0x00008020L, 0x80108000L, 0x80100000L, 0x00008020L,
946 0x00000000L, 0x00108020L, 0x80100020L, 0x00100000L,
947 0x80008020L, 0x80100000L, 0x80108000L, 0x00008000L,
948 0x80100000L, 0x80008000L, 0x00000020L, 0x80108020L,
949 0x00108020L, 0x00000020L, 0x00008000L, 0x80000000L,
950 0x00008020L, 0x80108000L, 0x00100000L, 0x80000020L,
951 0x00100020L, 0x80008020L, 0x80000020L, 0x00100020L,
952 0x00108000L, 0x00000000L, 0x80008000L, 0x00008020L,
953 0x80000000L, 0x80100020L, 0x80108020L, 0x00108000L };
955 static uint32_t SP3[64] = {
956 0x00000208L, 0x08020200L, 0x00000000L, 0x08020008L,
957 0x08000200L, 0x00000000L, 0x00020208L, 0x08000200L,
958 0x00020008L, 0x08000008L, 0x08000008L, 0x00020000L,
959 0x08020208L, 0x00020008L, 0x08020000L, 0x00000208L,
960 0x08000000L, 0x00000008L, 0x08020200L, 0x00000200L,
961 0x00020200L, 0x08020000L, 0x08020008L, 0x00020208L,
962 0x08000208L, 0x00020200L, 0x00020000L, 0x08000208L,
963 0x00000008L, 0x08020208L, 0x00000200L, 0x08000000L,
964 0x08020200L, 0x08000000L, 0x00020008L, 0x00000208L,
965 0x00020000L, 0x08020200L, 0x08000200L, 0x00000000L,
966 0x00000200L, 0x00020008L, 0x08020208L, 0x08000200L,
967 0x08000008L, 0x00000200L, 0x00000000L, 0x08020008L,
968 0x08000208L, 0x00020000L, 0x08000000L, 0x08020208L,
969 0x00000008L, 0x00020208L, 0x00020200L, 0x08000008L,
970 0x08020000L, 0x08000208L, 0x00000208L, 0x08020000L,
971 0x00020208L, 0x00000008L, 0x08020008L, 0x00020200L };
973 static uint32_t SP4[64] = {
974 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
975 0x00802080L, 0x00800081L, 0x00800001L, 0x00002001L,
976 0x00000000L, 0x00802000L, 0x00802000L, 0x00802081L,
977 0x00000081L, 0x00000000L, 0x00800080L, 0x00800001L,
978 0x00000001L, 0x00002000L, 0x00800000L, 0x00802001L,
979 0x00000080L, 0x00800000L, 0x00002001L, 0x00002080L,
980 0x00800081L, 0x00000001L, 0x00002080L, 0x00800080L,
981 0x00002000L, 0x00802080L, 0x00802081L, 0x00000081L,
982 0x00800080L, 0x00800001L, 0x00802000L, 0x00802081L,
983 0x00000081L, 0x00000000L, 0x00000000L, 0x00802000L,
984 0x00002080L, 0x00800080L, 0x00800081L, 0x00000001L,
985 0x00802001L, 0x00002081L, 0x00002081L, 0x00000080L,
986 0x00802081L, 0x00000081L, 0x00000001L, 0x00002000L,
987 0x00800001L, 0x00002001L, 0x00802080L, 0x00800081L,
988 0x00002001L, 0x00002080L, 0x00800000L, 0x00802001L,
989 0x00000080L, 0x00800000L, 0x00002000L, 0x00802080L };
991 static uint32_t SP5[64] = {
992 0x00000100L, 0x02080100L, 0x02080000L, 0x42000100L,
993 0x00080000L, 0x00000100L, 0x40000000L, 0x02080000L,
994 0x40080100L, 0x00080000L, 0x02000100L, 0x40080100L,
995 0x42000100L, 0x42080000L, 0x00080100L, 0x40000000L,
996 0x02000000L, 0x40080000L, 0x40080000L, 0x00000000L,
997 0x40000100L, 0x42080100L, 0x42080100L, 0x02000100L,
998 0x42080000L, 0x40000100L, 0x00000000L, 0x42000000L,
999 0x02080100L, 0x02000000L, 0x42000000L, 0x00080100L,
1000 0x00080000L, 0x42000100L, 0x00000100L, 0x02000000L,
1001 0x40000000L, 0x02080000L, 0x42000100L, 0x40080100L,
1002 0x02000100L, 0x40000000L, 0x42080000L, 0x02080100L,
1003 0x40080100L, 0x00000100L, 0x02000000L, 0x42080000L,
1004 0x42080100L, 0x00080100L, 0x42000000L, 0x42080100L,
1005 0x02080000L, 0x00000000L, 0x40080000L, 0x42000000L,
1006 0x00080100L, 0x02000100L, 0x40000100L, 0x00080000L,
1007 0x00000000L, 0x40080000L, 0x02080100L, 0x40000100L };
1009 static uint32_t SP6[64] = {
1010 0x20000010L, 0x20400000L, 0x00004000L, 0x20404010L,
1011 0x20400000L, 0x00000010L, 0x20404010L, 0x00400000L,
1012 0x20004000L, 0x00404010L, 0x00400000L, 0x20000010L,
1013 0x00400010L, 0x20004000L, 0x20000000L, 0x00004010L,
1014 0x00000000L, 0x00400010L, 0x20004010L, 0x00004000L,
1015 0x00404000L, 0x20004010L, 0x00000010L, 0x20400010L,
1016 0x20400010L, 0x00000000L, 0x00404010L, 0x20404000L,
1017 0x00004010L, 0x00404000L, 0x20404000L, 0x20000000L,
1018 0x20004000L, 0x00000010L, 0x20400010L, 0x00404000L,
1019 0x20404010L, 0x00400000L, 0x00004010L, 0x20000010L,
1020 0x00400000L, 0x20004000L, 0x20000000L, 0x00004010L,
1021 0x20000010L, 0x20404010L, 0x00404000L, 0x20400000L,
1022 0x00404010L, 0x20404000L, 0x00000000L, 0x20400010L,
1023 0x00000010L, 0x00004000L, 0x20400000L, 0x00404010L,
1024 0x00004000L, 0x00400010L, 0x20004010L, 0x00000000L,
1025 0x20404000L, 0x20000000L, 0x00400010L, 0x20004010L };
1027 static uint32_t SP7[64] = {
1028 0x00200000L, 0x04200002L, 0x04000802L, 0x00000000L,
1029 0x00000800L, 0x04000802L, 0x00200802L, 0x04200800L,
1030 0x04200802L, 0x00200000L, 0x00000000L, 0x04000002L,
1031 0x00000002L, 0x04000000L, 0x04200002L, 0x00000802L,
1032 0x04000800L, 0x00200802L, 0x00200002L, 0x04000800L,
1033 0x04000002L, 0x04200000L, 0x04200800L, 0x00200002L,
1034 0x04200000L, 0x00000800L, 0x00000802L, 0x04200802L,
1035 0x00200800L, 0x00000002L, 0x04000000L, 0x00200800L,
1036 0x04000000L, 0x00200800L, 0x00200000L, 0x04000802L,
1037 0x04000802L, 0x04200002L, 0x04200002L, 0x00000002L,
1038 0x00200002L, 0x04000000L, 0x04000800L, 0x00200000L,
1039 0x04200800L, 0x00000802L, 0x00200802L, 0x04200800L,
1040 0x00000802L, 0x04000002L, 0x04200802L, 0x04200000L,
1041 0x00200800L, 0x00000000L, 0x00000002L, 0x04200802L,
1042 0x00000000L, 0x00200802L, 0x04200000L, 0x00000800L,
1043 0x04000002L, 0x04000800L, 0x00000800L, 0x00200002L };
1045 static uint32_t SP8[64] = {
1046 0x10001040L, 0x00001000L, 0x00040000L, 0x10041040L,
1047 0x10000000L, 0x10001040L, 0x00000040L, 0x10000000L,
1048 0x00040040L, 0x10040000L, 0x10041040L, 0x00041000L,
1049 0x10041000L, 0x00041040L, 0x00001000L, 0x00000040L,
1050 0x10040000L, 0x10000040L, 0x10001000L, 0x00001040L,
1051 0x00041000L, 0x00040040L, 0x10040040L, 0x10041000L,
1052 0x00001040L, 0x00000000L, 0x00000000L, 0x10040040L,
1053 0x10000040L, 0x10001000L, 0x00041040L, 0x00040000L,
1054 0x00041040L, 0x00040000L, 0x10041000L, 0x00001000L,
1055 0x00000040L, 0x10040040L, 0x00001000L, 0x00041040L,
1056 0x10001000L, 0x00000040L, 0x10000040L, 0x10040000L,
1057 0x10040040L, 0x10000000L, 0x00040000L, 0x10001040L,
1058 0x00000000L, 0x10041040L, 0x00040040L, 0x10000040L,
1059 0x10040000L, 0x10001000L, 0x10001040L, 0x00000000L,
1060 0x10041040L, 0x00041000L, 0x00041000L, 0x00001040L,
1061 0x00001040L, 0x00040040L, 0x10000000L, 0x10041000L };
1068 work = ((v[0] >> 4) ^ v[1]) & 0x0f0f0f0fL;
1070 v[0] ^= (work << 4);
1071 work = ((v[0] >> 16) ^ v[1]) & 0x0000ffffL;
1073 v[0] ^= (work << 16);
1074 work = ((v[1] >> 2) ^ v[0]) & 0x33333333L;
1076 v[1] ^= (work << 2);
1077 work = ((v[1] >> 8) ^ v[0]) & 0x00ff00ffL;
1079 v[1] ^= (work << 8);
1080 v[1] = ((v[1] << 1) | ((v[1] >> 31) & 1L)) & 0xffffffffL;
1081 work = (v[0] ^ v[1]) & 0xaaaaaaaaL;
1084 v[0] = ((v[0] << 1) | ((v[0] >> 31) & 1L)) & 0xffffffffL;
1092 v[0] = (v[0] << 31) | (v[0] >> 1);
1093 work = (v[1] ^ v[0]) & 0xaaaaaaaaL;
1096 v[1] = (v[1] << 31) | (v[1] >> 1);
1097 work = ((v[1] >> 8) ^ v[0]) & 0x00ff00ffL;
1099 v[1] ^= (work << 8);
1100 work = ((v[1] >> 2) ^ v[0]) & 0x33333333L;
1102 v[1] ^= (work << 2);
1103 work = ((v[0] >> 16) ^ v[1]) & 0x0000ffffL;
1105 v[0] ^= (work << 16);
1106 work = ((v[0] >> 4) ^ v[1]) & 0x0f0f0f0fL;
1108 v[0] ^= (work << 4);
1112 desx(uint32_t block[2], DES_key_schedule *ks, int encp)
1115 uint32_t fval, work, right, left;
1124 for( round = 0; round < 8; round++ ) {
1125 work = (right << 28) | (right >> 4);
1127 fval = SP7[ work & 0x3fL];
1128 fval |= SP5[(work >> 8) & 0x3fL];
1129 fval |= SP3[(work >> 16) & 0x3fL];
1130 fval |= SP1[(work >> 24) & 0x3fL];
1131 work = right ^ *keys++;
1132 fval |= SP8[ work & 0x3fL];
1133 fval |= SP6[(work >> 8) & 0x3fL];
1134 fval |= SP4[(work >> 16) & 0x3fL];
1135 fval |= SP2[(work >> 24) & 0x3fL];
1137 work = (left << 28) | (left >> 4);
1139 fval = SP7[ work & 0x3fL];
1140 fval |= SP5[(work >> 8) & 0x3fL];
1141 fval |= SP3[(work >> 16) & 0x3fL];
1142 fval |= SP1[(work >> 24) & 0x3fL];
1143 work = left ^ *keys++;
1144 fval |= SP8[ work & 0x3fL];
1145 fval |= SP6[(work >> 8) & 0x3fL];
1146 fval |= SP4[(work >> 16) & 0x3fL];
1147 fval |= SP2[(work >> 24) & 0x3fL];
1153 for( round = 0; round < 8; round++ ) {
1154 work = (right << 28) | (right >> 4);
1156 fval = SP7[ work & 0x3fL];
1157 fval |= SP5[(work >> 8) & 0x3fL];
1158 fval |= SP3[(work >> 16) & 0x3fL];
1159 fval |= SP1[(work >> 24) & 0x3fL];
1160 work = right ^ *keys++;
1161 fval |= SP8[ work & 0x3fL];
1162 fval |= SP6[(work >> 8) & 0x3fL];
1163 fval |= SP4[(work >> 16) & 0x3fL];
1164 fval |= SP2[(work >> 24) & 0x3fL];
1166 work = (left << 28) | (left >> 4);
1169 fval = SP7[ work & 0x3fL];
1170 fval |= SP5[(work >> 8) & 0x3fL];
1171 fval |= SP3[(work >> 16) & 0x3fL];
1172 fval |= SP1[(work >> 24) & 0x3fL];
1173 work = left ^ *keys++;
1174 fval |= SP8[ work & 0x3fL];
1175 fval |= SP6[(work >> 8) & 0x3fL];
1176 fval |= SP4[(work >> 16) & 0x3fL];
1177 fval |= SP2[(work >> 24) & 0x3fL];