1: /*
2: ================================================================================
3: RPL/2 (R) version 4.1.36
4: Copyright (C) 1989-2025 Dr. BERTRAND Joël
5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
23: #include "rpl-conv.h"
24:
25:
26: /*
27: ================================================================================
28: Fonction 'cipher'
29: ================================================================================
30: Entrées :
31: --------------------------------------------------------------------------------
32: Sorties :
33: --------------------------------------------------------------------------------
34: Effets de bord : néant
35: ================================================================================
36: */
37:
38: void
39: instruction_cipher(struct_processus *s_etat_processus)
40: {
41: const EVP_CIPHER *EVP_chiffrement;
42: const EVP_MD *EVP_sum;
43:
44: int longueur_clef;
45:
46: integer8 longueur_clef_binaire;
47: integer8 longueur_iv_binaire;
48: integer8 longueur_message;
49: integer8 longueur_message_chiffre;
50: integer8 nombre_cycles;
51:
52: logical1 encodage;
53: logical1 generation_clef;
54: logical1 somme_invalide;
55:
56: logical8 sel;
57:
58: struct_liste_chainee *l_element_courant;
59:
60: struct_objet *s_objet_argument_1;
61: struct_objet *s_objet_argument_2;
62: struct_objet *s_objet_padding;
63: struct_objet *s_objet_resultat_1;
64: struct_objet *s_objet_resultat_2;
65:
66: unsigned char *algorithme_chiffrement;
67: unsigned char *clef;
68: unsigned char *clef_binaire;
69: unsigned char *controle;
70: unsigned char *direction;
71: unsigned char *fonction;
72: unsigned char *instruction;
73: unsigned char *iv;
74: unsigned char *iv_binaire;
75: unsigned char *message;
76: unsigned char *message_chiffre;
77: unsigned char padding;
78: unsigned char *tampon;
79:
80: if ((*s_etat_processus).affichage_arguments == 'Y')
81: {
82: printf("\n CIPHER ");
83:
84: if ((*s_etat_processus).langue == 'F')
85: {
86: printf("(opérations de chiffrement)\n\n");
87: }
88: else
89: {
90: printf("(cryptographic operations)\n\n");
91: }
92:
93: printf(" 2: \"password\"\n", d_CHN);
94: printf(" 1: { \"KEY\" \"cipher type\" \"digest type\" "
95: "salt nround }\n");
96: printf("-> 1: { \"cipher type\" \"generated key\" \"iv\" }\n\n");
97:
98: printf(" 2: \"text\"\n", d_CHN);
99: printf(" 1: { \"direction\" \"cipher type\" \"key\" \"iv\" "
100: "padding }\n");
101: printf("-> 2: \"encrypted or decrypted text\"\n", d_CHN);
102: printf(" 1: { \"direction\" \"cipher type\" \"key\" "
103: "\"updated iv\" padding }\n\n", d_LST);
104:
105: if ((*s_etat_processus).langue == 'F')
106: {
107: printf(" Algorithmes de chiffrement :\n\n");
108: }
109: else
110: {
111: printf(" Chipher algorithms:\n\n");
112: }
113:
114: # ifndef OPENSSL_NO_AES
115: printf(" - AES-128-CBC\n");
116: printf(" - AES-128-CCM\n");
117: printf(" - AES-128-CFB1\n");
118: printf(" - AES-128-CFB8\n");
119: printf(" - AES-128-CFB128\n");
120: printf(" - AES-128-CTR\n");
121: printf(" - AES-128-ECB\n");
122: printf(" - AES-128-GCM\n");
123: printf(" - AES-128-OFB\n");
124: printf(" - AES-128-XTS\n");
125: printf(" - AES-192-CBC\n");
126: printf(" - AES-192-CCM\n");
127: printf(" - AES-192-CFB1\n");
128: printf(" - AES-192-CFB8\n");
129: printf(" - AES-192-CFB128\n");
130: printf(" - AES-192-CTR\n");
131: printf(" - AES-192-ECB\n");
132: printf(" - AES-192-GCM\n");
133: printf(" - AES-192-OFB\n");
134: printf(" - AES-256-CBC\n");
135: printf(" - AES-256-CCM\n");
136: printf(" - AES-256-CFB1\n");
137: printf(" - AES-256-CFB8\n");
138: printf(" - AES-256-CFB128\n");
139: printf(" - AES-256-CTR\n");
140: printf(" - AES-256-ECB\n");
141: printf(" - AES-256-GCM\n");
142: printf(" - AES-256-OFB\n");
143: printf(" - AES-256-XTS\n");
144: # endif
145:
146: # ifndef OPENSSL_NO_BF
147: printf(" - BF-CBC\n");
148: printf(" - BF-CFB64\n");
149: printf(" - BF-ECB\n");
150: printf(" - BF-OFB\n");
151: # endif
152:
153: # ifndef OPENSSL_NO_CAMELLIA
154: printf(" - CAMELLIA-128-CBC\n");
155: printf(" - CAMELLIA-128-CFB1\n");
156: printf(" - CAMELLIA-128-CFB8\n");
157: printf(" - CAMELLIA-128-CFB128\n");
158: printf(" - CAMELLIA-128-ECB\n");
159: printf(" - CAMELLIA-128-OFB\n");
160: printf(" - CAMELLIA-192-CBC\n");
161: printf(" - CAMELLIA-192-CFB1\n");
162: printf(" - CAMELLIA-192-CFB8\n");
163: printf(" - CAMELLIA-192-CFB128\n");
164: printf(" - CAMELLIA-192-ECB\n");
165: printf(" - CAMELLIA-192-OFB\n");
166: printf(" - CAMELLIA-256-CBC\n");
167: printf(" - CAMELLIA-256-CFB1\n");
168: printf(" - CAMELLIA-256-CFB8\n");
169: printf(" - CAMELLIA-256-CFB128\n");
170: printf(" - CAMELLIA-256-ECB\n");
171: printf(" - CAMELLIA-256-OFB\n");
172: # endif
173:
174: # ifndef OPENSSL_NO_CAST
175: printf(" - CAST5-CBC\n");
176: printf(" - CAST5-ECB\n");
177: printf(" - CAST5-CFB64\n");
178: printf(" - CAST5-OFB\n");
179: # endif
180:
181: # ifndef OPENSSL_NO_DES
182: printf(" - DES-CBC\n");
183: printf(" - DES-CFB1\n");
184: printf(" - DES-CFB8\n");
185: printf(" - DES-CFB64\n");
186: printf(" - DES-ECB\n");
187: printf(" - DES-EDE\n");
188: printf(" - DES-EDE-CBC\n");
189: printf(" - DES-EDE-CFB1\n");
190: printf(" - DES-EDE-CFB8\n");
191: printf(" - DES-EDE-CFB64\n");
192: printf(" - DES-EDE-ECB\n");
193: printf(" - DES-EDE-OFB\n");
194: printf(" - DES-EDE3\n");
195: printf(" - DES-EDE3-CBC\n");
196: printf(" - DES-EDE3-ECB\n");
197: printf(" - DES-EDE3-OFB\n");
198: printf(" - DES-OFB\n");
199: printf(" - DESX-CBC\n");
200: # endif
201:
202: # ifndef OPENSSL_NO_IDEA
203: printf(" - IDEA-CBC\n");
204: printf(" - IDEA-CFB64\n");
205: printf(" - IDEA-ECB\n");
206: printf(" - IDEA-OFB\n");
207: # endif
208:
209: # ifndef OPENSSL_NO_RC2
210: printf(" - RC2-CBC\n");
211: printf(" - RC2-CFB64\n");
212: printf(" - RC2-ECB\n");
213: printf(" - RC2-OFB\n");
214: printf(" - RC2-40-CBC\n");
215: printf(" - RC2-64-CBC\n");
216: # endif
217:
218: # ifndef OPENSSL_NO_RC4
219: printf(" - RC4\n");
220: printf(" - RC4-40\n");
221: # endif
222:
223: # ifndef OPENSSL_NO_RC5
224: printf(" - RC5-32-12-16-CBC\n");
225: printf(" - RC5-32-12-16-CFB64\n");
226: printf(" - RC5-32-12-16-ECB\n");
227: printf(" - RC5-32-12-16-OFB\n");
228: # endif
229:
230: # ifndef OPENSSL_NO_SEED
231: printf(" - SEED-CBC\n");
232: printf(" - SEED-CFB128\n");
233: printf(" - SEED-ECB\n");
234: printf(" - SEED-OFB\n");
235: # endif
236:
237: printf("\n");
238:
239: if ((*s_etat_processus).langue == 'F')
240: {
241: printf(" Algorithmes de signature :\n\n");
242: }
243: else
244: {
245: printf(" Digest algorithms:\n\n");
246: }
247:
248: # ifndef OPENSSL_NO_MD2
249: printf(" - MD2\n");
250: # endif
251: # ifndef OPENSSL_NO_MD4
252: printf(" - MD4\n");
253: # endif
254: # ifndef OPENSSL_NO_MD5
255: printf(" - MD5\n");
256: # endif
257: # ifndef OPENSSL_NO_MDC2
258: printf(" - MDC2\n");
259: # endif
260: # ifndef OPENSSL_NO_RIPEMD
261: printf(" - RIPEMD160\n");
262: # endif
263: printf(" - SHA1\n");
264: printf(" - SHA224\n");
265: printf(" - SHA256\n");
266: printf(" - SHA384\n");
267: printf(" - SHA512\n");
268: # ifndef OPENSSL_NO_WHIRLPOOL
269: printf(" - WHIRLPOOL\n");
270: # endif
271:
272: printf("\n");
273:
274: if ((*s_etat_processus).langue == 'F')
275: {
276: printf(" Utilisation :\n\n");
277: }
278: else
279: {
280: printf(" Usage:\n\n");
281: }
282:
283: printf(" \"password\" { \"KEY\" \"DES-EDE-OFB\" \"SHA1\" "
284: "# 0h 3 } CIPHER\n");
285: printf(" \"text\" { \"ENCRYPT\" \"AES-128-CBC\" \"key\" "
286: "\"iv\" \"PADDING\" } CIPHER\n");
287: printf(" \"text\" { \"DECRYPT\" \"AES-128-EBC\" \"key\" "
288: "\"iv\" \"NO PADDING\" } CIPHER\n");
289: return;
290: }
291: else if ((*s_etat_processus).test_instruction == 'Y')
292: {
293: (*s_etat_processus).nombre_arguments = -1;
294: return;
295: }
296:
297: if (test_cfsf(s_etat_processus, 31) == d_vrai)
298: {
299: if (empilement_pile_last(s_etat_processus, 2) == d_erreur)
300: {
301: return;
302: }
303: }
304:
305: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
306: &s_objet_argument_1) == d_erreur)
307: {
308: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
309: return;
310: }
311:
312: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
313: &s_objet_argument_2) == d_erreur)
314: {
315: liberation(s_etat_processus, s_objet_argument_1);
316:
317: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
318: return;
319: }
320:
321: if (((*s_objet_argument_1).type == LST) &&
322: ((*s_objet_argument_2).type == CHN))
323: {
324: l_element_courant = (*s_objet_argument_1).objet;
325:
326: if (l_element_courant == NULL)
327: {
328: liberation(s_etat_processus, s_objet_argument_1);
329: liberation(s_etat_processus, s_objet_argument_2);
330:
331: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
332: return;
333: }
334:
335: if ((*(*l_element_courant).donnee).type != CHN)
336: {
337: liberation(s_etat_processus, s_objet_argument_1);
338: liberation(s_etat_processus, s_objet_argument_2);
339:
340: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
341: return;
342: }
343:
344: if ((instruction = conversion_majuscule(s_etat_processus,
345: (unsigned char *) (*(*l_element_courant).donnee).objet))
346: == NULL)
347: {
348: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
349: return;
350: }
351:
352: if (strcmp(instruction, "KEY") == 0)
353: {
354: // Dérivation d'une clef
355:
356: free(instruction);
357:
358: s_objet_padding = NULL;
359: l_element_courant = (*l_element_courant).suivant;
360:
361: if (l_element_courant == NULL)
362: {
363: liberation(s_etat_processus, s_objet_argument_1);
364: liberation(s_etat_processus, s_objet_argument_2);
365:
366: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
367: return;
368: }
369:
370: // On attend l'algorithme de chiffrement.
371:
372: if ((*(*l_element_courant).donnee).type != CHN)
373: {
374: liberation(s_etat_processus, s_objet_argument_1);
375: liberation(s_etat_processus, s_objet_argument_2);
376:
377: (*s_etat_processus).erreur_execution =
378: d_ex_erreur_type_argument;
379: return;
380: }
381:
382: algorithme_chiffrement = (unsigned char *) (*(*l_element_courant)
383: .donnee).objet;
384:
385: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
386: {
387: liberation(s_etat_processus, s_objet_argument_1);
388: liberation(s_etat_processus, s_objet_argument_2);
389:
390: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
391: return;
392: }
393:
394: // On attend la somme de contrôle.
395:
396: if ((*(*l_element_courant).donnee).type != CHN)
397: {
398: liberation(s_etat_processus, s_objet_argument_1);
399: liberation(s_etat_processus, s_objet_argument_2);
400:
401: (*s_etat_processus).erreur_execution =
402: d_ex_erreur_type_argument;
403: return;
404: }
405:
406: controle = (unsigned char *) (*(*l_element_courant).donnee).objet;
407:
408: // Test de la validité de la somme de contrôle.
409:
410: if ((fonction = conversion_majuscule(s_etat_processus, controle))
411: == NULL)
412: {
413: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
414: return;
415: }
416:
417: somme_invalide = d_faux;
418:
419: switch(fonction[0])
420: {
421: case 'M':
422: {
423: switch(fonction[1])
424: {
425: case 'D': // md
426: {
427: switch(fonction[2])
428: {
429: # ifndef OPENSSL_NO_MD2
430: case '2': // md2
431: {
432: if (fonction[3] == d_code_fin_chaine)
433: {
434: EVP_sum = EVP_md2();
435: }
436: else
437: {
438: somme_invalide = d_vrai;
439: }
440:
441: break;
442: }
443: # endif
444:
445: # ifndef OPENSSL_NO_MD4
446: case '4': // md4
447: {
448: if (fonction[3] == d_code_fin_chaine)
449: {
450: EVP_sum = EVP_md4();
451: }
452: else
453: {
454: somme_invalide = d_vrai;
455: }
456:
457: break;
458: }
459: # endif
460:
461: # ifndef OPENSSL_NO_MD5
462: case '5': // md5
463: {
464: if (fonction[3] == d_code_fin_chaine)
465: {
466: EVP_sum = EVP_md5();
467: }
468: else
469: {
470: somme_invalide = d_vrai;
471: }
472:
473: break;
474: }
475: # endif
476:
477: case 'C': // mdc
478: {
479: switch(fonction[3])
480: {
481: # ifndef OPENSSL_NO_MDC2
482: case '2': // mdc2
483: {
484: if (fonction[4] ==
485: d_code_fin_chaine)
486: {
487: EVP_sum = EVP_mdc2();
488: }
489: else
490: {
491: somme_invalide = d_vrai;
492: }
493:
494: break;
495: }
496: # endif
497:
498: default:
499: {
500: somme_invalide = d_vrai;
501: break;
502: }
503: }
504:
505: break;
506: }
507:
508: default:
509: {
510: somme_invalide = d_vrai;
511: break;
512: }
513: }
514:
515: break;
516: }
517:
518: default:
519: {
520: somme_invalide = d_vrai;
521: break;
522: }
523: }
524:
525: break;
526: }
527:
528: # ifndef OPENSSL_NO_RIPEMD
529: case 'R':
530: {
531: if (strcmp(fonction, "RIPEMD160") == 0)
532: {
533: EVP_sum = EVP_ripemd160();
534: }
535: else
536: {
537: somme_invalide = d_vrai;
538: }
539:
540: break;
541: }
542: # endif
543:
544: case 'S':
545: {
546: switch(fonction[1])
547: {
548: case 'H': // sh
549: {
550: switch(fonction[2])
551: {
552: case 'A':
553: {
554: switch(fonction[3])
555: {
556: case '1': // sha1
557: {
558: if (fonction[4] ==
559: d_code_fin_chaine)
560: {
561: EVP_sum = EVP_sha1();
562: }
563: else
564: {
565: somme_invalide = d_vrai;
566: }
567:
568: break;
569: }
570:
571: case '2': // sha2
572: {
573: switch(fonction[4])
574: {
575: case '2': // sha22
576: {
577: switch(fonction[5])
578: {
579: case '4': // sha224
580: {
581: if (fonction[6] ==
582: d_code_fin_chaine)
583: {
584: EVP_sum =
585: EVP_sha224();
586: }
587: else
588: {
589: somme_invalide =
590: d_vrai;
591: }
592:
593: break;
594: }
595:
596: default:
597: {
598: somme_invalide =
599: d_vrai;
600: break;
601: }
602: }
603:
604: break;
605: }
606:
607: case '5':
608: {
609: switch(fonction[5])
610: {
611: case '6': // sha256
612: {
613: if (fonction[6] ==
614: d_code_fin_chaine)
615: {
616: EVP_sum =
617: EVP_sha256();
618: }
619: else
620: {
621: somme_invalide =
622: d_vrai;
623: }
624:
625: break;
626: }
627:
628: default:
629: {
630: somme_invalide =
631: d_vrai;
632: break;
633: }
634: }
635:
636: break;
637: }
638:
639: default:
640: {
641: somme_invalide = d_vrai;
642: break;
643: }
644: }
645:
646: break;
647: }
648:
649: case '3': // sha3
650: {
651: switch(fonction[4])
652: {
653: case '8': // sha38
654: {
655: switch(fonction[5])
656: {
657: case '4': // sha384
658: {
659: if (fonction[6] ==
660: d_code_fin_chaine)
661: {
662: EVP_sum =
663: EVP_sha384();
664: }
665: else
666: {
667: somme_invalide =
668: d_vrai;
669: }
670:
671: break;
672: }
673:
674: default:
675: {
676: somme_invalide =
677: d_vrai;
678: break;
679: }
680: }
681:
682: break;
683: }
684:
685: default:
686: {
687: somme_invalide = d_vrai;
688: break;
689: }
690: }
691:
692: break;
693: }
694:
695: case '5': // sha5
696: {
697: switch(fonction[4])
698: {
699: case '1': // sha51
700: {
701: switch(fonction[5])
702: {
703: case '2': // sha512
704: {
705: if (fonction[6] ==
706: d_code_fin_chaine)
707: {
708: EVP_sum =
709: EVP_sha512();
710: }
711: else
712: {
713: somme_invalide =
714: d_vrai;
715: }
716:
717: break;
718: }
719:
720: default:
721: {
722: somme_invalide =
723: d_vrai;
724: break;
725: }
726: }
727:
728: break;
729: }
730:
731: default:
732: {
733: somme_invalide = d_vrai;
734: break;
735: }
736: }
737:
738: break;
739: }
740:
741: default:
742: {
743: somme_invalide = d_vrai;
744: break;
745: }
746: }
747:
748: break;
749: }
750:
751: default:
752: {
753: somme_invalide = d_vrai;
754: break;
755: }
756: }
757:
758: break;
759: }
760:
761: default:
762: {
763: somme_invalide = d_vrai;
764: break;
765: }
766: }
767:
768: break;
769: }
770:
771: # ifndef OPENSSL_NO_WHIRLPOOL
772: case 'W':
773: {
774: if (strcmp(fonction, "WHIRLPOOL") == 0)
775: {
776: EVP_sum = EVP_whirlpool();
777: }
778: else
779: {
780: somme_invalide = d_vrai;
781: }
782:
783: break;
784: }
785: # endif
786:
787: default:
788: {
789: somme_invalide = d_vrai;
790: break;
791: }
792: }
793:
794: free(fonction);
795:
796: if (somme_invalide == d_vrai)
797: {
798: liberation(s_etat_processus, s_objet_argument_1);
799: liberation(s_etat_processus, s_objet_argument_2);
800:
801: (*s_etat_processus).erreur_execution =
802: d_ex_chiffrement_indisponible;
803: return;
804: }
805:
806: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
807: {
808: liberation(s_etat_processus, s_objet_argument_1);
809: liberation(s_etat_processus, s_objet_argument_2);
810:
811: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
812: return;
813: }
814:
815: // On attend le sel, donc un entier binaire de 64 bits.
816:
817: if ((*(*l_element_courant).donnee).type != BIN)
818: {
819: liberation(s_etat_processus, s_objet_argument_1);
820: liberation(s_etat_processus, s_objet_argument_2);
821:
822: (*s_etat_processus).erreur_execution =
823: d_ex_erreur_type_argument;
824: return;
825: }
826:
827: sel = (*((logical8 *) (*(*l_element_courant).donnee).objet));
828:
829: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
830: {
831: liberation(s_etat_processus, s_objet_argument_1);
832: liberation(s_etat_processus, s_objet_argument_2);
833:
834: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
835: return;
836: }
837:
838: // On attend le nombre de cycles.
839:
840: if ((*(*l_element_courant).donnee).type != INT)
841: {
842: liberation(s_etat_processus, s_objet_argument_1);
843: liberation(s_etat_processus, s_objet_argument_2);
844:
845: (*s_etat_processus).erreur_execution =
846: d_ex_erreur_type_argument;
847: return;
848: }
849:
850: nombre_cycles = (*((integer8 *) (*(*l_element_courant)
851: .donnee).objet));
852:
853: // On a dû atteindre la fin de la liste.
854:
855: if ((*l_element_courant).suivant != NULL)
856: {
857: liberation(s_etat_processus, s_objet_argument_1);
858: liberation(s_etat_processus, s_objet_argument_2);
859:
860: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
861: return;
862: }
863:
864: clef = NULL;
865: iv = NULL;
866:
867: generation_clef = d_vrai;
868: }
869: else
870: {
871: // Chiffrement ou déchiffrement d'un message
872:
873: direction = instruction;
874:
875: l_element_courant = (*l_element_courant).suivant;
876:
877: if (l_element_courant == NULL)
878: {
879: liberation(s_etat_processus, s_objet_argument_1);
880: liberation(s_etat_processus, s_objet_argument_2);
881:
882: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
883: return;
884: }
885:
886: // On attend le type de chiffrement.
887:
888: if ((*(*l_element_courant).donnee).type != CHN)
889: {
890: liberation(s_etat_processus, s_objet_argument_1);
891: liberation(s_etat_processus, s_objet_argument_2);
892:
893: (*s_etat_processus).erreur_execution =
894: d_ex_erreur_type_argument;
895: return;
896: }
897:
898: algorithme_chiffrement = (unsigned char *) (*(*l_element_courant)
899: .donnee).objet;
900:
901: // On attend la clef.
902:
903: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
904: {
905: liberation(s_etat_processus, s_objet_argument_1);
906: liberation(s_etat_processus, s_objet_argument_2);
907:
908: (*s_etat_processus).erreur_execution =
909: d_ex_manque_argument;
910: return;
911: }
912:
913: clef = (unsigned char *) (*(*l_element_courant).donnee).objet;
914:
915: // On attend le vecteur d'initialisation.
916:
917: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
918: {
919: liberation(s_etat_processus, s_objet_argument_1);
920: liberation(s_etat_processus, s_objet_argument_2);
921:
922: (*s_etat_processus).erreur_execution =
923: d_ex_manque_argument;
924: return;
925: }
926:
927: iv = (unsigned char *) (*(*l_element_courant).donnee).objet;
928:
929: // On attend le drapeau concernant le padding.
930:
931: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
932: {
933: liberation(s_etat_processus, s_objet_argument_1);
934: liberation(s_etat_processus, s_objet_argument_2);
935:
936: (*s_etat_processus).erreur_execution =
937: d_ex_manque_argument;
938: return;
939: }
940:
941: if ((*(*l_element_courant).donnee).type != CHN)
942: {
943: liberation(s_etat_processus, s_objet_argument_1);
944: liberation(s_etat_processus, s_objet_argument_2);
945:
946: (*s_etat_processus).erreur_execution =
947: d_ex_erreur_type_argument;
948: return;
949: }
950:
951: tampon = conversion_majuscule(s_etat_processus,
952: (unsigned char *) (*(*l_element_courant).donnee).objet);
953:
954: if (strcmp(tampon, "PADDING") == 0)
955: {
956: padding = 'Y';
957: }
958: else if (strcmp(tampon, "NO PADDING") == 0)
959: {
960: padding = 'N';
961: }
962: else
963: {
964: free(tampon);
965:
966: liberation(s_etat_processus, s_objet_argument_1);
967: liberation(s_etat_processus, s_objet_argument_2);
968:
969: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
970: return;
971: }
972:
973: free(tampon);
974:
975: s_objet_padding = copie_objet(s_etat_processus,
976: (*l_element_courant).donnee, 'P');
977:
978: if ((*l_element_courant).suivant != NULL)
979: {
980: liberation(s_etat_processus, s_objet_argument_1);
981: liberation(s_etat_processus, s_objet_argument_2);
982:
983: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
984: return;
985: }
986:
987: generation_clef = d_faux;
988: }
989: }
990: else
991: {
992: liberation(s_etat_processus, s_objet_argument_1);
993: liberation(s_etat_processus, s_objet_argument_2);
994:
995: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
996: return;
997: }
998:
999: if ((tampon = conversion_majuscule(s_etat_processus,
1000: algorithme_chiffrement)) == NULL)
1001: {
1002: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1003: return;
1004: }
1005:
1006: # define TEST_CIPHER(string, value) \
1007: if (strcmp(tampon, string) == 0) EVP_chiffrement = value();
1008:
1009: if (strncmp(tampon, "DES", 3) == 0)
1010: {
1011: # ifndef OPENSSL_NO_DES
1012: TEST_CIPHER("DES-ECB", EVP_des_ecb)
1013: else TEST_CIPHER("DES-EDE", EVP_des_ede)
1014: else TEST_CIPHER("DES-EDE3", EVP_des_ede3)
1015: else TEST_CIPHER("DES-EDE-ECB", EVP_des_ede_ecb)
1016: else TEST_CIPHER("DES-EDE3-ECB", EVP_des_ede3_ecb)
1017: else TEST_CIPHER("DES-CFB64", EVP_des_cfb64)
1018: else TEST_CIPHER("DES-CFB1", EVP_des_cfb1)
1019: else TEST_CIPHER("DES-CFB8", EVP_des_cfb8)
1020: else TEST_CIPHER("DES-EDE-CFB64", EVP_des_ede_cfb64)
1021: else TEST_CIPHER("DES-EDE3-CFB64", EVP_des_ede3_cfb64)
1022: else TEST_CIPHER("DES-EDE3-CFB1", EVP_des_ede3_cfb1)
1023: else TEST_CIPHER("DES-EDE3-CFB8", EVP_des_ede3_cfb8)
1024: else TEST_CIPHER("DES-OFB", EVP_des_ofb)
1025: else TEST_CIPHER("DES-EDE-OFB", EVP_des_ede_ofb)
1026: else TEST_CIPHER("DES-EDE3-OFB", EVP_des_ede3_ofb)
1027: else TEST_CIPHER("DES-CBC", EVP_des_cbc)
1028: else TEST_CIPHER("DES-EDE-CBC", EVP_des_ede_cbc)
1029: else TEST_CIPHER("DES-EDE3-CBC", EVP_des_ede3_cbc)
1030: else TEST_CIPHER("DESX-CBC", EVP_desx_cbc)
1031: else
1032: {
1033: free(tampon);
1034:
1035: liberation(s_etat_processus, s_objet_argument_1);
1036: liberation(s_etat_processus, s_objet_argument_2);
1037:
1038: (*s_etat_processus).erreur_execution =
1039: d_ex_chiffrement_indisponible;
1040: return;
1041: }
1042: # else
1043: free(tampon);
1044:
1045: liberation(s_etat_processus, s_objet_argument_1);
1046: liberation(s_etat_processus, s_objet_argument_2);
1047:
1048: (*s_etat_processus).erreur_execution =
1049: d_ex_chiffrement_indisponible;
1050: return;
1051: # endif
1052: }
1053: else if (strncmp(tampon, "RC4", 3) == 0)
1054: {
1055: # ifndef OPENSSL_NO_RC4
1056: TEST_CIPHER("RC4", EVP_rc4)
1057: else TEST_CIPHER("RC4-40", EVP_rc4_40)
1058: else
1059: {
1060: free(tampon);
1061:
1062: liberation(s_etat_processus, s_objet_argument_1);
1063: liberation(s_etat_processus, s_objet_argument_2);
1064:
1065: (*s_etat_processus).erreur_execution =
1066: d_ex_chiffrement_indisponible;
1067: return;
1068: }
1069: # else
1070: free(tampon);
1071:
1072: liberation(s_etat_processus, s_objet_argument_1);
1073: liberation(s_etat_processus, s_objet_argument_2);
1074:
1075: (*s_etat_processus).erreur_execution =
1076: d_ex_chiffrement_indisponible;
1077: return;
1078: # endif
1079: }
1080: else if (strncmp(tampon, "IDEA", 4) == 0)
1081: {
1082: # ifndef OPENSSL_NO_IDEA
1083: TEST_CIPHER("IDEA-ECB", EVP_idea_ecb)
1084: else TEST_CIPHER("IDEA-CFB64", EVP_idea_cfb64)
1085: else TEST_CIPHER("IDEA-OFB", EVP_idea_ofb)
1086: else TEST_CIPHER("IDEA-CBC", EVP_idea_cbc)
1087: else
1088: {
1089: free(tampon);
1090:
1091: liberation(s_etat_processus, s_objet_argument_1);
1092: liberation(s_etat_processus, s_objet_argument_2);
1093:
1094: (*s_etat_processus).erreur_execution =
1095: d_ex_chiffrement_indisponible;
1096: return;
1097: }
1098: # else
1099: free(tampon);
1100:
1101: liberation(s_etat_processus, s_objet_argument_1);
1102: liberation(s_etat_processus, s_objet_argument_2);
1103:
1104: (*s_etat_processus).erreur_execution =
1105: d_ex_chiffrement_indisponible;
1106: return;
1107: # endif
1108: }
1109: else if (strncmp(tampon, "RC2", 3) == 0)
1110: {
1111: # ifndef OPENSSL_NO_RC2
1112: TEST_CIPHER("RC2-ECB", EVP_rc2_ecb)
1113: else TEST_CIPHER("RC2-CBC", EVP_rc2_cbc)
1114: else TEST_CIPHER("RC2-40-CBC", EVP_rc2_40_cbc)
1115: else TEST_CIPHER("RC2-64-CBC", EVP_rc2_64_cbc)
1116: else TEST_CIPHER("RC2-CFB64", EVP_rc2_cfb64)
1117: else TEST_CIPHER("RC2-OFB", EVP_rc2_ofb)
1118: else
1119: {
1120: free(tampon);
1121:
1122: liberation(s_etat_processus, s_objet_argument_1);
1123: liberation(s_etat_processus, s_objet_argument_2);
1124:
1125: (*s_etat_processus).erreur_execution =
1126: d_ex_chiffrement_indisponible;
1127: return;
1128: }
1129: # else
1130: free(tampon);
1131:
1132: liberation(s_etat_processus, s_objet_argument_1);
1133: liberation(s_etat_processus, s_objet_argument_2);
1134:
1135: (*s_etat_processus).erreur_execution =
1136: d_ex_chiffrement_indisponible;
1137: return;
1138: # endif
1139: }
1140: else if (strncmp(tampon, "BF", 2) == 0)
1141: {
1142: # ifndef OPENSSL_NO_BF
1143: TEST_CIPHER("BF-ECB", EVP_bf_ecb)
1144: else TEST_CIPHER("BF-CBC", EVP_bf_cbc)
1145: else TEST_CIPHER("BF-CFB64", EVP_bf_cfb64)
1146: else TEST_CIPHER("BF-OFB", EVP_bf_ofb)
1147: else
1148: {
1149: free(tampon);
1150:
1151: liberation(s_etat_processus, s_objet_argument_1);
1152: liberation(s_etat_processus, s_objet_argument_2);
1153:
1154: (*s_etat_processus).erreur_execution =
1155: d_ex_chiffrement_indisponible;
1156: return;
1157: }
1158: # else
1159: free(tampon);
1160:
1161: liberation(s_etat_processus, s_objet_argument_1);
1162: liberation(s_etat_processus, s_objet_argument_2);
1163:
1164: (*s_etat_processus).erreur_execution =
1165: d_ex_chiffrement_indisponible;
1166: return;
1167: # endif
1168: }
1169: else if (strncmp(tampon, "CAST5", 5) == 0)
1170: {
1171: # ifndef OPENSSL_NO_CAST
1172: TEST_CIPHER("CAST5-ECB", EVP_cast5_ecb)
1173: else TEST_CIPHER("CAST5-CBC", EVP_cast5_cbc)
1174: else TEST_CIPHER("CAST5-CFB64", EVP_cast5_cfb64)
1175: else TEST_CIPHER("CAST5-OFB", EVP_cast5_ofb)
1176: else
1177: {
1178: free(tampon);
1179:
1180: liberation(s_etat_processus, s_objet_argument_1);
1181: liberation(s_etat_processus, s_objet_argument_2);
1182:
1183: (*s_etat_processus).erreur_execution =
1184: d_ex_chiffrement_indisponible;
1185: return;
1186: }
1187: # else
1188: free(tampon);
1189:
1190: liberation(s_etat_processus, s_objet_argument_1);
1191: liberation(s_etat_processus, s_objet_argument_2);
1192:
1193: (*s_etat_processus).erreur_execution =
1194: d_ex_chiffrement_indisponible;
1195: return;
1196: # endif
1197: }
1198: else if (strncmp(tampon, "RC5", 3) == 0)
1199: {
1200: # ifndef OPENSSL_NO_RC5
1201: TEST_CIPHER("RC5-32-12-16-ECB", EVP_rc5_32_12_16_ebc)
1202: else TEST_CIPHER("RC5-32-12-16-CBC", EVP_rc5_32_12_16_cbc)
1203: else TEST_CIPHER("RC5-32-12-16-CFB64", EVP_rc5_32_12_16_cfb64)
1204: else TEST_CIPHER("RC5-32-12-16-OFB", EVP_rc5_32_12_16_ofb)
1205: else
1206: {
1207: free(tampon);
1208:
1209: liberation(s_etat_processus, s_objet_argument_1);
1210: liberation(s_etat_processus, s_objet_argument_2);
1211:
1212: (*s_etat_processus).erreur_execution =
1213: d_ex_chiffrement_indisponible;
1214: return;
1215: }
1216: # else
1217: free(tampon);
1218:
1219: liberation(s_etat_processus, s_objet_argument_1);
1220: liberation(s_etat_processus, s_objet_argument_2);
1221:
1222: (*s_etat_processus).erreur_execution =
1223: d_ex_chiffrement_indisponible;
1224: return;
1225: # endif
1226: }
1227: else if (strncmp(tampon, "AES", 3) == 0)
1228: {
1229: # ifndef OPENSSL_NO_AES
1230: TEST_CIPHER("AES-128-ECB", EVP_aes_128_ecb)
1231: else TEST_CIPHER("AES-128-CBC", EVP_aes_128_cbc)
1232: else TEST_CIPHER("AES-128-CFB1", EVP_aes_128_cfb1)
1233: else TEST_CIPHER("AES-128-CFB8", EVP_aes_128_cfb8)
1234: else TEST_CIPHER("AES-128-CFB128", EVP_aes_128_cfb128)
1235: else TEST_CIPHER("AES-128-OFB", EVP_aes_128_ofb)
1236: else TEST_CIPHER("AES-128-CTR", EVP_aes_128_ctr)
1237: else TEST_CIPHER("AES-128-CCM", EVP_aes_128_ccm)
1238: else TEST_CIPHER("AES-128-GCM", EVP_aes_128_gcm)
1239: else TEST_CIPHER("AES-128-XTS", EVP_aes_128_xts)
1240: else TEST_CIPHER("AES-192-ECB", EVP_aes_192_ecb)
1241: else TEST_CIPHER("AES-192-CBC", EVP_aes_192_cbc)
1242: else TEST_CIPHER("AES-192-CFB1", EVP_aes_192_cfb1)
1243: else TEST_CIPHER("AES-192-CFB8", EVP_aes_192_cfb8)
1244: else TEST_CIPHER("AES-192-CFB128", EVP_aes_192_cfb128)
1245: else TEST_CIPHER("AES-192-OFB", EVP_aes_192_ofb)
1246: else TEST_CIPHER("AES-192-CTR", EVP_aes_192_ctr)
1247: else TEST_CIPHER("AES-192-CCM", EVP_aes_192_ccm)
1248: else TEST_CIPHER("AES-192-GCM", EVP_aes_192_gcm)
1249: else TEST_CIPHER("AES-256-ECB", EVP_aes_256_ecb)
1250: else TEST_CIPHER("AES-256-CBC", EVP_aes_256_cbc)
1251: else TEST_CIPHER("AES-256-CFB1", EVP_aes_256_cfb1)
1252: else TEST_CIPHER("AES-256-CFB8", EVP_aes_256_cfb8)
1253: else TEST_CIPHER("AES-256-CFB128", EVP_aes_256_cfb128)
1254: else TEST_CIPHER("AES-256-OFB", EVP_aes_256_ofb)
1255: else TEST_CIPHER("AES-256-CTR", EVP_aes_256_ctr)
1256: else TEST_CIPHER("AES-256-CCM", EVP_aes_256_ccm)
1257: else TEST_CIPHER("AES-256-GCM", EVP_aes_256_gcm)
1258: else TEST_CIPHER("AES-256-XTS", EVP_aes_256_xts)
1259: else
1260: {
1261: free(tampon);
1262:
1263: liberation(s_etat_processus, s_objet_argument_1);
1264: liberation(s_etat_processus, s_objet_argument_2);
1265:
1266: (*s_etat_processus).erreur_execution =
1267: d_ex_chiffrement_indisponible;
1268: return;
1269: }
1270: # else
1271: free(tampon);
1272:
1273: liberation(s_etat_processus, s_objet_argument_1);
1274: liberation(s_etat_processus, s_objet_argument_2);
1275:
1276: (*s_etat_processus).erreur_execution =
1277: d_ex_chiffrement_indisponible;
1278: return;
1279: # endif
1280: }
1281: else if (strncmp(tampon, "CAMELLIA", 8) == 0)
1282: {
1283: # ifndef OPENSSL_NO_CAMELLIA
1284: TEST_CIPHER("CAMELLIA-128-ECB", EVP_camellia_128_ecb)
1285: else TEST_CIPHER("CAMELLIA-128-CBC", EVP_camellia_128_cbc)
1286: else TEST_CIPHER("CAMELLIA-128-CFB1", EVP_camellia_128_cfb1)
1287: else TEST_CIPHER("CAMELLIA-128-CFB8", EVP_camellia_128_cfb8)
1288: else TEST_CIPHER("CAMELLIA-128-CFB128", EVP_camellia_128_cfb128)
1289: else TEST_CIPHER("CAMELLIA-128-OFB", EVP_camellia_128_ofb)
1290: else TEST_CIPHER("CAMELLIA-192-ECB", EVP_camellia_128_ecb)
1291: else TEST_CIPHER("CAMELLIA-192-CBC", EVP_camellia_192_cbc)
1292: else TEST_CIPHER("CAMELLIA-192-CFB1", EVP_camellia_192_cfb1)
1293: else TEST_CIPHER("CAMELLIA-192-CFB8", EVP_camellia_192_cfb8)
1294: else TEST_CIPHER("CAMELLIA-192-CFB128", EVP_camellia_192_cfb128)
1295: else TEST_CIPHER("CAMELLIA-192-OFB", EVP_camellia_192_ofb)
1296: else TEST_CIPHER("CAMELLIA-256-ECB", EVP_camellia_256_ecb)
1297: else TEST_CIPHER("CAMELLIA-256-CBC", EVP_camellia_256_cbc)
1298: else TEST_CIPHER("CAMELLIA-256-CFB1", EVP_camellia_256_cfb1)
1299: else TEST_CIPHER("CAMELLIA-256-CFB8", EVP_camellia_256_cfb8)
1300: else TEST_CIPHER("CAMELLIA-256-CFB128", EVP_camellia_256_cfb128)
1301: else TEST_CIPHER("CAMELLIA-256-OFB", EVP_camellia_256_ofb)
1302: else
1303: {
1304: free(tampon);
1305:
1306: liberation(s_etat_processus, s_objet_argument_1);
1307: liberation(s_etat_processus, s_objet_argument_2);
1308:
1309: (*s_etat_processus).erreur_execution =
1310: d_ex_chiffrement_indisponible;
1311: return;
1312: }
1313: # else
1314: free(tampon);
1315:
1316: liberation(s_etat_processus, s_objet_argument_1);
1317: liberation(s_etat_processus, s_objet_argument_2);
1318:
1319: (*s_etat_processus).erreur_execution =
1320: d_ex_chiffrement_indisponible;
1321: return;
1322: # endif
1323: }
1324: else if (strncmp(tampon, "SEED", 4) == 0)
1325: {
1326: # ifndef OPENSSL_NO_SEED
1327: TEST_CIPHER("SEED-ECB", EVP_seed_ecb)
1328: else TEST_CIPHER("SEED-CBC", EVP_seed_cbc)
1329: else TEST_CIPHER("SEED-CFB128", EVP_seed_cfb128)
1330: else TEST_CIPHER("SEED-OFB", EVP_seed_ofb)
1331: else
1332: {
1333: free(tampon);
1334:
1335: liberation(s_etat_processus, s_objet_argument_1);
1336: liberation(s_etat_processus, s_objet_argument_2);
1337:
1338: (*s_etat_processus).erreur_execution =
1339: d_ex_chiffrement_indisponible;
1340: return;
1341: }
1342: # else
1343: free(tampon);
1344:
1345: liberation(s_etat_processus, s_objet_argument_1);
1346: liberation(s_etat_processus, s_objet_argument_2);
1347:
1348: (*s_etat_processus).erreur_execution =
1349: d_ex_chiffrement_indisponible;
1350: return;
1351: # endif
1352: }
1353: else
1354: {
1355: free(tampon);
1356:
1357: liberation(s_etat_processus, s_objet_argument_1);
1358: liberation(s_etat_processus, s_objet_argument_2);
1359:
1360: (*s_etat_processus).erreur_execution = d_ex_chiffrement_indisponible;
1361: return;
1362: }
1363:
1364: free(tampon);
1365:
1366: if (generation_clef == d_vrai)
1367: {
1368: if ((iv = malloc(((size_t) EVP_CIPHER_iv_length(EVP_chiffrement))
1369: * sizeof(unsigned char))) == NULL)
1370: {
1371: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1372: return;
1373: }
1374:
1375: if ((clef = malloc(((size_t) EVP_CIPHER_key_length(EVP_chiffrement))
1376: * sizeof(unsigned char))) == NULL)
1377: {
1378: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1379: return;
1380: }
1381:
1382: longueur_clef = EVP_BytesToKey(EVP_chiffrement, EVP_sum,
1383: (unsigned char *) &sel, (unsigned char *)
1384: (*s_objet_argument_2).objet,
1385: (int) longueur_chaine(s_etat_processus,
1386: (unsigned char *) (*s_objet_argument_2).objet),
1387: (int) nombre_cycles, clef, iv);
1388:
1389: if (longueur_clef != EVP_CIPHER_key_length(EVP_chiffrement))
1390: {
1391: free(iv);
1392: free(clef);
1393:
1394: liberation(s_etat_processus, s_objet_argument_1);
1395: liberation(s_etat_processus, s_objet_argument_2);
1396:
1397: (*s_etat_processus).erreur_execution = d_ex_chiffrement;
1398: return;
1399: }
1400:
1401: if ((s_objet_resultat_1 = allocation(s_etat_processus, LST)) == NULL)
1402: {
1403: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1404: return;
1405: }
1406:
1407: if (((*s_objet_resultat_1).objet = allocation_maillon(s_etat_processus))
1408: == NULL)
1409: {
1410: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1411: return;
1412: }
1413:
1414: l_element_courant = (*s_objet_resultat_1).objet;
1415:
1416: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1417: == NULL)
1418: {
1419: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1420: return;
1421: }
1422:
1423: if (((*(*l_element_courant).donnee).objet = malloc(
1424: (strlen(algorithme_chiffrement) + 1) * sizeof(unsigned char)))
1425: == NULL)
1426: {
1427: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1428: return;
1429: }
1430:
1431: strcpy((*(*l_element_courant).donnee).objet, algorithme_chiffrement);
1432:
1433: if (((*l_element_courant).suivant = allocation_maillon(
1434: s_etat_processus)) == NULL)
1435: {
1436: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1437: return;
1438: }
1439:
1440: l_element_courant = (*l_element_courant).suivant;
1441:
1442: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1443: == NULL)
1444: {
1445: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1446: return;
1447: }
1448:
1449: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1450: s_etat_processus, clef,
1451: EVP_CIPHER_key_length(EVP_chiffrement))) == NULL)
1452: {
1453: return;
1454: }
1455:
1456: free(clef);
1457:
1458: if (((*l_element_courant).suivant = allocation_maillon(
1459: s_etat_processus)) == NULL)
1460: {
1461: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1462: return;
1463: }
1464:
1465: l_element_courant = (*l_element_courant).suivant;
1466: (*l_element_courant).suivant = NULL;
1467:
1468: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1469: == NULL)
1470: {
1471: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1472: return;
1473: }
1474:
1475: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1476: s_etat_processus, iv,
1477: EVP_CIPHER_iv_length(EVP_chiffrement))) == NULL)
1478: {
1479: return;
1480: }
1481:
1482: free(iv);
1483:
1484: liberation(s_etat_processus, s_objet_argument_1);
1485: liberation(s_etat_processus, s_objet_argument_2);
1486:
1487: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1488: s_objet_resultat_1) == d_erreur)
1489: {
1490: return;
1491: }
1492: }
1493: else
1494: {
1495: // Chiffrement ou déchiffrement
1496:
1497: if (strcmp(direction, "ENCRYPT") == 0)
1498: {
1499: encodage = d_vrai;
1500: }
1501: else if (strcmp(direction, "DECRYPT") == 0)
1502: {
1503: encodage = d_faux;
1504: }
1505: else
1506: {
1507: free(direction);
1508: liberation(s_etat_processus, s_objet_argument_1);
1509: liberation(s_etat_processus, s_objet_argument_2);
1510:
1511: (*s_etat_processus).erreur_execution =
1512: d_ex_argument_invalide;
1513: return;
1514: }
1515:
1516: free(direction);
1517:
1518: // Conversion des clefs
1519:
1520: if ((clef_binaire = formateur_flux(s_etat_processus, clef,
1521: &longueur_clef_binaire)) == NULL)
1522: {
1523: return;
1524: }
1525:
1526: if ((iv_binaire = formateur_flux(s_etat_processus, iv,
1527: &longueur_iv_binaire)) == NULL)
1528: {
1529: return;
1530: }
1531:
1532: // Vérification de la longueur des clef et vecteur d'initialisation
1533:
1534: if (longueur_clef_binaire != EVP_CIPHER_key_length(EVP_chiffrement))
1535: {
1536: free(clef_binaire);
1537: free(iv_binaire);
1538:
1539: liberation(s_etat_processus, s_objet_argument_1);
1540: liberation(s_etat_processus, s_objet_argument_2);
1541:
1542: (*s_etat_processus).erreur_execution =
1543: d_ex_longueur_clef_chiffrement;
1544: return;
1545: }
1546:
1547: if (longueur_iv_binaire != EVP_CIPHER_iv_length(EVP_chiffrement))
1548: {
1549: free(clef_binaire);
1550: free(iv_binaire);
1551:
1552: liberation(s_etat_processus, s_objet_argument_1);
1553: liberation(s_etat_processus, s_objet_argument_2);
1554:
1555: (*s_etat_processus).erreur_execution =
1556: d_ex_longueur_clef_chiffrement;
1557: return;
1558: }
1559:
1560: if ((message = formateur_flux(s_etat_processus, (unsigned char *)
1561: (*s_objet_argument_2).objet, &longueur_message)) == NULL)
1562: {
1563: return;
1564: }
1565:
1566: if ((message_chiffre = chiffrement(s_etat_processus,
1567: EVP_chiffrement, encodage, message,
1568: longueur_message, clef_binaire, longueur_clef_binaire,
1569: iv_binaire, &longueur_message_chiffre, padding)) == NULL)
1570: {
1571: free(clef_binaire);
1572: free(iv_binaire);
1573: free(message);
1574:
1575: liberation(s_etat_processus, s_objet_argument_1);
1576: liberation(s_etat_processus, s_objet_argument_2);
1577:
1578: (*s_etat_processus).erreur_execution = d_ex_chiffrement;
1579: return;
1580: }
1581:
1582: free(clef_binaire);
1583: free(message);
1584:
1585: if ((s_objet_resultat_2 = allocation(s_etat_processus, CHN)) == NULL)
1586: {
1587: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1588: return;
1589: }
1590:
1591: if (((*s_objet_resultat_2).objet = analyse_flux(s_etat_processus,
1592: message_chiffre, longueur_message_chiffre)) == NULL)
1593: {
1594: return;
1595: }
1596:
1597: free(message_chiffre);
1598:
1599: if ((s_objet_resultat_1 = allocation(s_etat_processus, LST)) == NULL)
1600: {
1601: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1602: return;
1603: }
1604:
1605: if (((*s_objet_resultat_1).objet = allocation_maillon(s_etat_processus))
1606: == NULL)
1607: {
1608: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1609: return;
1610: }
1611:
1612: l_element_courant = (*s_objet_resultat_1).objet;
1613:
1614: // Direction
1615:
1616: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1617: == NULL)
1618: {
1619: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1620: return;
1621: }
1622:
1623: if (((*(*l_element_courant).donnee).objet =
1624: malloc(8 * sizeof(unsigned char))) == NULL)
1625: {
1626: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1627: return;
1628: }
1629:
1630: strcpy((*(*l_element_courant).donnee).objet,
1631: (encodage == d_vrai) ? "ENCRYPT" : "DECRYPT");
1632:
1633: // Type de chiffrement
1634:
1635: if (((*l_element_courant).suivant = allocation_maillon(
1636: s_etat_processus)) == NULL)
1637: {
1638: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1639: return;
1640: }
1641:
1642: l_element_courant = (*l_element_courant).suivant;
1643:
1644: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1645: == NULL)
1646: {
1647: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1648: return;
1649: }
1650:
1651: if (((*(*l_element_courant).donnee).objet =
1652: conversion_majuscule(s_etat_processus, algorithme_chiffrement))
1653: == NULL)
1654: {
1655: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1656: return;
1657: }
1658:
1659: // Clef
1660:
1661: if (((*l_element_courant).suivant = allocation_maillon(
1662: s_etat_processus)) == NULL)
1663: {
1664: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1665: return;
1666: }
1667:
1668: l_element_courant = (*l_element_courant).suivant;
1669:
1670: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1671: == NULL)
1672: {
1673: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1674: return;
1675: }
1676:
1677: if (((*(*l_element_courant).donnee).objet =
1678: malloc((strlen(clef) + 1) * sizeof(unsigned char))) == NULL)
1679: {
1680: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1681: return;
1682: }
1683:
1684: strcpy((*(*l_element_courant).donnee).objet, clef);
1685:
1686: // Vecteur d'initialisation
1687:
1688: if (((*l_element_courant).suivant = allocation_maillon(
1689: s_etat_processus)) == NULL)
1690: {
1691: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1692: return;
1693: }
1694:
1695: l_element_courant = (*l_element_courant).suivant;
1696:
1697: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1698: == NULL)
1699: {
1700: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1701: return;
1702: }
1703:
1704: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1705: s_etat_processus, iv_binaire, longueur_iv_binaire)) == NULL)
1706: {
1707: return;
1708: }
1709:
1710: free(iv_binaire);
1711:
1712: // Padding
1713:
1714: if (((*l_element_courant).suivant = allocation_maillon(
1715: s_etat_processus)) == NULL)
1716: {
1717: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1718: return;
1719: }
1720:
1721: l_element_courant = (*l_element_courant).suivant;
1722: (*l_element_courant).donnee = s_objet_padding;
1723: (*l_element_courant).suivant = NULL;
1724:
1725: liberation(s_etat_processus, s_objet_argument_1);
1726: liberation(s_etat_processus, s_objet_argument_2);
1727:
1728: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1729: s_objet_resultat_2) == d_erreur)
1730: {
1731: return;
1732: }
1733:
1734: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1735: s_objet_resultat_1) == d_erreur)
1736: {
1737: return;
1738: }
1739: }
1740:
1741: return;
1742: }
1743:
1744: // vim: ts=4
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