1: /*
2: ================================================================================
3: RPL/2 (R) version 4.1.20
4: Copyright (C) 1989-2015 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_resultat_1;
63: struct_objet *s_objet_resultat_2;
64:
65: unsigned char *algorithme_chiffrement;
66: unsigned char *clef;
67: unsigned char *clef_binaire;
68: unsigned char *controle;
69: unsigned char *direction;
70: unsigned char *fonction;
71: unsigned char *instruction;
72: unsigned char *iv;
73: unsigned char *iv_binaire;
74: unsigned char *message;
75: unsigned char *message_chiffre;
76: unsigned char *tampon;
77:
78: if ((*s_etat_processus).affichage_arguments == 'Y')
79: {
80: printf("\n CIPHER ");
81:
82: if ((*s_etat_processus).langue == 'F')
83: {
84: printf("(opérations de chiffrement)\n\n");
85: }
86: else
87: {
88: printf("(cryptographic operations)\n\n");
89: }
90:
91: printf(" 2: \"password\"\n", d_CHN);
92: printf(" 1: { \"KEY\" \"cipher type\" \"digest type\" "
93: "salt nround }\n");
94: printf("-> 1: { \"cipher type\" \"generated key\" \"iv\" }\n\n");
95:
96: printf(" 2: \"text\"\n", d_CHN);
97: printf(" 1: { \"direction\" \"cipher type\" \"key\" \"iv\" }\n");
98: printf("-> 2: \"encrypted or decrypted text\"\n", d_CHN);
99: printf(" 1: { \"direction\" \"cipher type\" \"key\" "
100: "\"updated iv\" }\n\n", d_LST);
101:
102: if ((*s_etat_processus).langue == 'F')
103: {
104: printf(" Algorithmes de chiffrement :\n\n");
105: }
106: else
107: {
108: printf(" Chipher algorithms:\n\n");
109: }
110:
111: # ifndef OPENSSL_NO_AES
112: printf(" - AES-128-CBC\n");
113: printf(" - AES-128-CCM\n");
114: printf(" - AES-128-CFB1\n");
115: printf(" - AES-128-CFB8\n");
116: printf(" - AES-128-CFB128\n");
117: printf(" - AES-128-CTR\n");
118: printf(" - AES-128-ECB\n");
119: printf(" - AES-128-GCM\n");
120: printf(" - AES-128-OFB\n");
121: printf(" - AES-128-XTS\n");
122: printf(" - AES-192-CBC\n");
123: printf(" - AES-192-CCM\n");
124: printf(" - AES-192-CFB1\n");
125: printf(" - AES-192-CFB8\n");
126: printf(" - AES-192-CFB128\n");
127: printf(" - AES-192-CTR\n");
128: printf(" - AES-192-ECB\n");
129: printf(" - AES-192-GCM\n");
130: printf(" - AES-192-OFB\n");
131: printf(" - AES-256-CBC\n");
132: printf(" - AES-256-CCM\n");
133: printf(" - AES-256-CFB1\n");
134: printf(" - AES-256-CFB8\n");
135: printf(" - AES-256-CFB128\n");
136: printf(" - AES-256-CTR\n");
137: printf(" - AES-256-ECB\n");
138: printf(" - AES-256-GCM\n");
139: printf(" - AES-256-OFB\n");
140: printf(" - AES-256-XTS\n");
141: # endif
142:
143: # ifndef OPENSSL_NO_BF
144: printf(" - BF-CBC\n");
145: printf(" - BF-CFB64\n");
146: printf(" - BF-ECB\n");
147: printf(" - BF-OFB\n");
148: # endif
149:
150: # ifndef OPENSSL_NO_CAMELLIA
151: printf(" - CAMELLIA-128-CBC\n");
152: printf(" - CAMELLIA-128-CFB1\n");
153: printf(" - CAMELLIA-128-CFB8\n");
154: printf(" - CAMELLIA-128-CFB128\n");
155: printf(" - CAMELLIA-128-ECB\n");
156: printf(" - CAMELLIA-128-OFB\n");
157: printf(" - CAMELLIA-192-CBC\n");
158: printf(" - CAMELLIA-192-CFB1\n");
159: printf(" - CAMELLIA-192-CFB8\n");
160: printf(" - CAMELLIA-192-CFB128\n");
161: printf(" - CAMELLIA-192-ECB\n");
162: printf(" - CAMELLIA-192-OFB\n");
163: printf(" - CAMELLIA-256-CBC\n");
164: printf(" - CAMELLIA-256-CFB1\n");
165: printf(" - CAMELLIA-256-CFB8\n");
166: printf(" - CAMELLIA-256-CFB128\n");
167: printf(" - CAMELLIA-256-ECB\n");
168: printf(" - CAMELLIA-256-OFB\n");
169: # endif
170:
171: # ifndef OPENSSL_NO_CAST
172: printf(" - CAST5-CBC\n");
173: printf(" - CAST5-ECB\n");
174: printf(" - CAST5-CFB64\n");
175: printf(" - CAST5-OFB\n");
176: # endif
177:
178: # ifndef OPENSSL_NO_DES
179: printf(" - DES-CBC\n");
180: printf(" - DES-CFB1\n");
181: printf(" - DES-CFB8\n");
182: printf(" - DES-CFB64\n");
183: printf(" - DES-ECB\n");
184: printf(" - DES-EDE\n");
185: printf(" - DES-EDE-CBC\n");
186: printf(" - DES-EDE-CFB1\n");
187: printf(" - DES-EDE-CFB8\n");
188: printf(" - DES-EDE-CFB64\n");
189: printf(" - DES-EDE-ECB\n");
190: printf(" - DES-EDE-OFB\n");
191: printf(" - DES-EDE3\n");
192: printf(" - DES-EDE3-CBC\n");
193: printf(" - DES-EDE3-ECB\n");
194: printf(" - DES-EDE3-OFB\n");
195: printf(" - DES-OFB\n");
196: printf(" - DESX-CBC\n");
197: # endif
198:
199: # ifndef OPENSSL_NO_IDEA
200: printf(" - IDEA-CBC\n");
201: printf(" - IDEA-CFB64\n");
202: printf(" - IDEA-ECB\n");
203: printf(" - IDEA-OFB\n");
204: # endif
205:
206: # ifndef OPENSSL_NO_RC2
207: printf(" - RC2-CBC\n");
208: printf(" - RC2-CFB64\n");
209: printf(" - RC2-ECB\n");
210: printf(" - RC2-OFB\n");
211: printf(" - RC2-40-CBC\n");
212: printf(" - RC2-64-CBC\n");
213: # endif
214:
215: # ifndef OPENSSL_NO_RC4
216: printf(" - RC4\n");
217: printf(" - RC4-40\n");
218: # endif
219:
220: # ifndef OPENSSL_NO_RC5
221: printf(" - RC5-32-12-16-CBC\n");
222: printf(" - RC5-32-12-16-CFB64\n");
223: printf(" - RC5-32-12-16-ECB\n");
224: printf(" - RC5-32-12-16-OFB\n");
225: # endif
226:
227: # ifndef OPENSSL_NO_SEED
228: printf(" - SEED-CBC\n");
229: printf(" - SEED-CFB128\n");
230: printf(" - SEED-ECB\n");
231: printf(" - SEED-OFB\n");
232: # endif
233:
234: printf("\n");
235:
236: if ((*s_etat_processus).langue == 'F')
237: {
238: printf(" Algorithmes de signature :\n\n");
239: }
240: else
241: {
242: printf(" Digest algorithms:\n\n");
243: }
244:
245: # ifndef OPENSSL_NO_SHA
246: printf(" - DSS\n");
247: printf(" - DSS1\n");
248: printf(" - ECDSA\n");
249: # endif
250: # ifndef OPENSSL_NO_MD2
251: printf(" - MD2\n");
252: # endif
253: # ifndef OPENSSL_NO_MD4
254: printf(" - MD4\n");
255: # endif
256: # ifndef OPENSSL_NO_MD5
257: printf(" - MD5\n");
258: # endif
259: # ifndef OPENSSL_NO_MDC2
260: printf(" - MDC2\n");
261: # endif
262: # ifndef OPENSSL_NO_RIPEMD
263: printf(" - RIPEMD160\n");
264: # endif
265: # ifndef OPENSSL_NO_SHA
266: printf(" - SHA\n");
267: printf(" - SHA1\n");
268: # endif
269: # ifndef OPENSSL_NO_SHA256
270: printf(" - SHA224\n");
271: printf(" - SHA256\n");
272: # endif
273: # ifndef OPENSSL_NO_SHA512
274: printf(" - SHA384\n");
275: printf(" - SHA512\n");
276: # endif
277: # ifndef OPENSSL_NO_WHIRLPOOL
278: printf(" - WHIRLPOOL\n");
279: # endif
280:
281: printf("\n");
282:
283: if ((*s_etat_processus).langue == 'F')
284: {
285: printf(" Utilisation :\n\n");
286: }
287: else
288: {
289: printf(" Usage:\n\n");
290: }
291:
292: printf(" \"password\" { \"KEY\" \"DES-EDE-OFB\" \"SHA1\" "
293: "# 0h 3 } CIPHER\n");
294: printf(" \"text\" { \"ENCRYPT\" \"AES-128-CBC\" \"key\" "
295: "\"iv\" } CIPHER\n");
296: printf(" \"text\" { \"DECRYPT\" \"AES-128-EBC\" \"key\" "
297: "\"iv\" } CIPHER\n");
298: return;
299: }
300: else if ((*s_etat_processus).test_instruction == 'Y')
301: {
302: (*s_etat_processus).nombre_arguments = -1;
303: return;
304: }
305:
306: if (test_cfsf(s_etat_processus, 31) == d_vrai)
307: {
308: if (empilement_pile_last(s_etat_processus, 2) == d_erreur)
309: {
310: return;
311: }
312: }
313:
314: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
315: &s_objet_argument_1) == d_erreur)
316: {
317: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
318: return;
319: }
320:
321: if (depilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
322: &s_objet_argument_2) == d_erreur)
323: {
324: liberation(s_etat_processus, s_objet_argument_1);
325:
326: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
327: return;
328: }
329:
330: if (((*s_objet_argument_1).type == LST) &&
331: ((*s_objet_argument_2).type == CHN))
332: {
333: l_element_courant = (*s_objet_argument_1).objet;
334:
335: if (l_element_courant == NULL)
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_argument_invalide;
341: return;
342: }
343:
344: if ((*(*l_element_courant).donnee).type != CHN)
345: {
346: liberation(s_etat_processus, s_objet_argument_1);
347: liberation(s_etat_processus, s_objet_argument_2);
348:
349: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
350: return;
351: }
352:
353: if ((instruction = conversion_majuscule((unsigned char *)
354: (*(*l_element_courant).donnee).objet)) == NULL)
355: {
356: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
357: return;
358: }
359:
360: if (strcmp(instruction, "KEY") == 0)
361: {
362: // Dérivation d'une clef
363:
364: free(instruction);
365:
366: l_element_courant = (*l_element_courant).suivant;
367:
368: if (l_element_courant == NULL)
369: {
370: liberation(s_etat_processus, s_objet_argument_1);
371: liberation(s_etat_processus, s_objet_argument_2);
372:
373: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
374: return;
375: }
376:
377: // On attend l'algorithme de chiffrement.
378:
379: if ((*(*l_element_courant).donnee).type != CHN)
380: {
381: liberation(s_etat_processus, s_objet_argument_1);
382: liberation(s_etat_processus, s_objet_argument_2);
383:
384: (*s_etat_processus).erreur_execution =
385: d_ex_erreur_type_argument;
386: return;
387: }
388:
389: algorithme_chiffrement = (unsigned char *) (*(*l_element_courant)
390: .donnee).objet;
391:
392: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
393: {
394: liberation(s_etat_processus, s_objet_argument_1);
395: liberation(s_etat_processus, s_objet_argument_2);
396:
397: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
398: return;
399: }
400:
401: // On attend la somme de contrôle.
402:
403: if ((*(*l_element_courant).donnee).type != CHN)
404: {
405: liberation(s_etat_processus, s_objet_argument_1);
406: liberation(s_etat_processus, s_objet_argument_2);
407:
408: (*s_etat_processus).erreur_execution =
409: d_ex_erreur_type_argument;
410: return;
411: }
412:
413: controle = (unsigned char *) (*(*l_element_courant).donnee).objet;
414:
415: // Test de la validité de la somme de contrôle.
416:
417: if ((fonction = conversion_majuscule(controle)) == NULL)
418: {
419: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
420: return;
421: }
422:
423: somme_invalide = d_faux;
424:
425: switch(fonction[0])
426: {
427: case 'D':
428: {
429: switch(fonction[1])
430: {
431: case 'S': // ds
432: {
433: switch(fonction[2])
434: {
435: # ifndef OPENSSL_NO_SHA
436: case 'S': // dss
437: {
438: switch(fonction[3])
439: {
440: case d_code_fin_chaine:
441: {
442: EVP_sum = EVP_dss();
443: break;
444: }
445:
446: case '1': // dss1
447: {
448: if (fonction[4] ==
449: d_code_fin_chaine)
450: {
451: EVP_sum = EVP_dss1();
452: }
453: else
454: {
455: somme_invalide = d_vrai;
456: }
457:
458: break;
459: }
460:
461: default:
462: {
463: somme_invalide = d_vrai;
464: break;
465: }
466: }
467:
468: break;
469: }
470: # endif
471:
472: default:
473: {
474: somme_invalide = d_vrai;
475: break;
476: }
477: }
478:
479: break;
480: }
481:
482: default:
483: {
484: somme_invalide = d_vrai;
485: break;
486: }
487: }
488:
489: break;
490: }
491:
492: case 'E':
493: {
494: switch(fonction[1])
495: {
496: case 'C': // ec
497: {
498: switch(fonction[2])
499: {
500: case 'D': // ecd
501: {
502: switch(fonction[3])
503: {
504: case 'S': // ecds
505: {
506: switch(fonction[4])
507: {
508: # ifndef OPENSSL_NO_SHA
509: case 'A': // ecdsa
510: {
511: if (fonction[5] ==
512: d_code_fin_chaine)
513: {
514: EVP_sum = EVP_ecdsa();
515: }
516: else
517: {
518: somme_invalide = d_vrai;
519: }
520:
521: break;
522: }
523: # endif
524:
525: default:
526: {
527: somme_invalide = d_vrai;
528: break;
529: }
530: }
531:
532: break;
533: }
534:
535: default:
536: {
537: somme_invalide = d_vrai;
538: break;
539: }
540: }
541:
542: break;
543: }
544:
545: default:
546: {
547: somme_invalide = d_vrai;
548: break;
549: }
550: }
551:
552: break;
553: }
554:
555: default:
556: {
557: somme_invalide = d_vrai;
558: break;
559: }
560: }
561:
562: break;
563: }
564:
565: case 'M':
566: {
567: switch(fonction[1])
568: {
569: case 'D': // md
570: {
571: switch(fonction[2])
572: {
573: # ifndef OPENSSL_NO_MD2
574: case '2': // md2
575: {
576: if (fonction[3] == d_code_fin_chaine)
577: {
578: EVP_sum = EVP_md2();
579: }
580: else
581: {
582: somme_invalide = d_vrai;
583: }
584:
585: break;
586: }
587: # endif
588:
589: # ifndef OPENSSL_NO_MD4
590: case '4': // md4
591: {
592: if (fonction[3] == d_code_fin_chaine)
593: {
594: EVP_sum = EVP_md4();
595: }
596: else
597: {
598: somme_invalide = d_vrai;
599: }
600:
601: break;
602: }
603: # endif
604:
605: # ifndef OPENSSL_NO_MD5
606: case '5': // md5
607: {
608: if (fonction[3] == d_code_fin_chaine)
609: {
610: EVP_sum = EVP_md5();
611: }
612: else
613: {
614: somme_invalide = d_vrai;
615: }
616:
617: break;
618: }
619: # endif
620:
621: case 'C': // mdc
622: {
623: switch(fonction[3])
624: {
625: # ifndef OPENSSL_NO_MDC2
626: case '2': // mdc2
627: {
628: if (fonction[4] ==
629: d_code_fin_chaine)
630: {
631: EVP_sum = EVP_mdc2();
632: }
633: else
634: {
635: somme_invalide = d_vrai;
636: }
637:
638: break;
639: }
640: # endif
641:
642: default:
643: {
644: somme_invalide = d_vrai;
645: break;
646: }
647: }
648:
649: break;
650: }
651:
652: default:
653: {
654: somme_invalide = d_vrai;
655: break;
656: }
657: }
658:
659: break;
660: }
661:
662: default:
663: {
664: somme_invalide = d_vrai;
665: break;
666: }
667: }
668:
669: break;
670: }
671:
672: # ifndef OPENSSL_NO_RIPEMD
673: case 'R':
674: {
675: if (strcmp(fonction, "RIPEMD160") == 0)
676: {
677: EVP_sum = EVP_ripemd160();
678: }
679: else
680: {
681: somme_invalide = d_vrai;
682: }
683:
684: break;
685: }
686: # endif
687:
688: case 'S':
689: {
690: switch(fonction[1])
691: {
692: case 'H': // sh
693: {
694: switch(fonction[2])
695: {
696: # ifndef OPENSSL_NO_SHA
697: case 'A':
698: {
699: switch(fonction[3])
700: {
701: case d_code_fin_chaine:
702: {
703: EVP_sum = EVP_sha();
704: break;
705: }
706:
707: case '1': // sha1
708: {
709: if (fonction[4] ==
710: d_code_fin_chaine)
711: {
712: EVP_sum = EVP_sha1();
713: }
714: else
715: {
716: somme_invalide = d_vrai;
717: }
718:
719: break;
720: }
721:
722: # ifndef OPENSSL_NO_SHA256
723: case '2': // sha2
724: {
725: switch(fonction[4])
726: {
727: case '2': // sha22
728: {
729: switch(fonction[5])
730: {
731: case '4': // sha224
732: {
733: if (fonction[6] ==
734: d_code_fin_chaine)
735: {
736: EVP_sum =
737: EVP_sha224();
738: }
739: else
740: {
741: somme_invalide =
742: d_vrai;
743: }
744:
745: break;
746: }
747:
748: default:
749: {
750: somme_invalide =
751: d_vrai;
752: break;
753: }
754: }
755:
756: break;
757: }
758:
759: case '5':
760: {
761: switch(fonction[5])
762: {
763: case '6': // sha256
764: {
765: if (fonction[6] ==
766: d_code_fin_chaine)
767: {
768: EVP_sum =
769: EVP_sha256();
770: }
771: else
772: {
773: somme_invalide =
774: d_vrai;
775: }
776:
777: break;
778: }
779:
780: default:
781: {
782: somme_invalide =
783: d_vrai;
784: break;
785: }
786: }
787:
788: break;
789: }
790:
791: default:
792: {
793: somme_invalide = d_vrai;
794: break;
795: }
796: }
797:
798: break;
799: }
800: # endif
801:
802: # ifndef OPENSSL_NO_SHA512
803: case '3': // sha3
804: {
805: switch(fonction[4])
806: {
807: case '8': // sha38
808: {
809: switch(fonction[5])
810: {
811: case '4': // sha384
812: {
813: if (fonction[6] ==
814: d_code_fin_chaine)
815: {
816: EVP_sum =
817: EVP_sha384();
818: }
819: else
820: {
821: somme_invalide =
822: d_vrai;
823: }
824:
825: break;
826: }
827:
828: default:
829: {
830: somme_invalide =
831: d_vrai;
832: break;
833: }
834: }
835:
836: break;
837: }
838:
839: default:
840: {
841: somme_invalide = d_vrai;
842: break;
843: }
844: }
845:
846: break;
847: }
848:
849: case '5': // sha5
850: {
851: switch(fonction[4])
852: {
853: case '1': // sha51
854: {
855: switch(fonction[5])
856: {
857: case '2': // sha512
858: {
859: if (fonction[6] ==
860: d_code_fin_chaine)
861: {
862: EVP_sum =
863: EVP_sha512();
864: }
865: else
866: {
867: somme_invalide =
868: d_vrai;
869: }
870:
871: break;
872: }
873:
874: default:
875: {
876: somme_invalide =
877: d_vrai;
878: break;
879: }
880: }
881:
882: break;
883: }
884:
885: default:
886: {
887: somme_invalide = d_vrai;
888: break;
889: }
890: }
891:
892: break;
893: }
894: # endif
895:
896: default:
897: {
898: somme_invalide = d_vrai;
899: break;
900: }
901: }
902:
903: break;
904: }
905: # endif
906:
907: default:
908: {
909: somme_invalide = d_vrai;
910: break;
911: }
912: }
913:
914: break;
915: }
916:
917: default:
918: {
919: somme_invalide = d_vrai;
920: break;
921: }
922: }
923:
924: break;
925: }
926:
927: # ifndef OPENSSL_NO_WHIRLPOOL
928: case 'W':
929: {
930: if (strcmp(fonction, "WHIRLPOOL") == 0)
931: {
932: EVP_sum = EVP_whirlpool();
933: }
934: else
935: {
936: somme_invalide = d_vrai;
937: }
938:
939: break;
940: }
941: # endif
942:
943: default:
944: {
945: somme_invalide = d_vrai;
946: break;
947: }
948: }
949:
950: free(fonction);
951:
952: if (somme_invalide == d_vrai)
953: {
954: liberation(s_etat_processus, s_objet_argument_1);
955: liberation(s_etat_processus, s_objet_argument_2);
956:
957: (*s_etat_processus).erreur_execution =
958: d_ex_chiffrement_indisponible;
959: return;
960: }
961:
962: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
963: {
964: liberation(s_etat_processus, s_objet_argument_1);
965: liberation(s_etat_processus, s_objet_argument_2);
966:
967: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
968: return;
969: }
970:
971: // On attend le sel, donc un entier binaire de 64 bits.
972:
973: if ((*(*l_element_courant).donnee).type != BIN)
974: {
975: liberation(s_etat_processus, s_objet_argument_1);
976: liberation(s_etat_processus, s_objet_argument_2);
977:
978: (*s_etat_processus).erreur_execution =
979: d_ex_erreur_type_argument;
980: return;
981: }
982:
983: sel = (*((logical8 *) (*(*l_element_courant).donnee).objet));
984:
985: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
986: {
987: liberation(s_etat_processus, s_objet_argument_1);
988: liberation(s_etat_processus, s_objet_argument_2);
989:
990: (*s_etat_processus).erreur_execution = d_ex_manque_argument;
991: return;
992: }
993:
994: // On attend le nombre de cycles.
995:
996: if ((*(*l_element_courant).donnee).type != INT)
997: {
998: liberation(s_etat_processus, s_objet_argument_1);
999: liberation(s_etat_processus, s_objet_argument_2);
1000:
1001: (*s_etat_processus).erreur_execution =
1002: d_ex_erreur_type_argument;
1003: return;
1004: }
1005:
1006: nombre_cycles = (*((integer8 *) (*(*l_element_courant)
1007: .donnee).objet));
1008:
1009: // On a dû atteindre la fin de la liste.
1010:
1011: if ((*l_element_courant).suivant != NULL)
1012: {
1013: liberation(s_etat_processus, s_objet_argument_1);
1014: liberation(s_etat_processus, s_objet_argument_2);
1015:
1016: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
1017: return;
1018: }
1019:
1020: clef = NULL;
1021: iv = NULL;
1022:
1023: generation_clef = d_vrai;
1024: }
1025: else
1026: {
1027: // Chiffrement ou déchiffrement d'un message
1028:
1029: direction = instruction;
1030:
1031: l_element_courant = (*l_element_courant).suivant;
1032:
1033: if (l_element_courant == NULL)
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 = d_ex_manque_argument;
1039: return;
1040: }
1041:
1042: // On attend le type de chiffrement.
1043:
1044: if ((*(*l_element_courant).donnee).type != CHN)
1045: {
1046: liberation(s_etat_processus, s_objet_argument_1);
1047: liberation(s_etat_processus, s_objet_argument_2);
1048:
1049: (*s_etat_processus).erreur_execution =
1050: d_ex_erreur_type_argument;
1051: return;
1052: }
1053:
1054: algorithme_chiffrement = (unsigned char *) (*(*l_element_courant)
1055: .donnee).objet;
1056:
1057: // On attend la clef.
1058:
1059: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
1060: {
1061: liberation(s_etat_processus, s_objet_argument_1);
1062: liberation(s_etat_processus, s_objet_argument_2);
1063:
1064: (*s_etat_processus).erreur_execution =
1065: d_ex_manque_argument;
1066: return;
1067: }
1068:
1069: clef = (unsigned char *) (*(*l_element_courant).donnee).objet;
1070:
1071: // On attend le vecteur d'initialisation.
1072:
1073: if ((l_element_courant = (*l_element_courant).suivant) == NULL)
1074: {
1075: liberation(s_etat_processus, s_objet_argument_1);
1076: liberation(s_etat_processus, s_objet_argument_2);
1077:
1078: (*s_etat_processus).erreur_execution =
1079: d_ex_manque_argument;
1080: return;
1081: }
1082:
1083: iv = (unsigned char *) (*(*l_element_courant).donnee).objet;
1084:
1085: if ((*l_element_courant).suivant != NULL)
1086: {
1087: liberation(s_etat_processus, s_objet_argument_1);
1088: liberation(s_etat_processus, s_objet_argument_2);
1089:
1090: (*s_etat_processus).erreur_execution = d_ex_argument_invalide;
1091: return;
1092: }
1093:
1094: generation_clef = d_faux;
1095: }
1096: }
1097: else
1098: {
1099: liberation(s_etat_processus, s_objet_argument_1);
1100: liberation(s_etat_processus, s_objet_argument_2);
1101:
1102: (*s_etat_processus).erreur_execution = d_ex_erreur_type_argument;
1103: return;
1104: }
1105:
1106: if ((tampon = conversion_majuscule(algorithme_chiffrement)) == NULL)
1107: {
1108: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1109: return;
1110: }
1111:
1112: # define TEST_CIPHER(string, value) \
1113: if (strcmp(tampon, string) == 0) EVP_chiffrement = value();
1114:
1115: if (strncmp(tampon, "DES", 3) == 0)
1116: {
1117: # ifndef OPENSSL_NO_DES
1118: TEST_CIPHER("DES-ECB", EVP_des_ecb)
1119: else TEST_CIPHER("DES-EDE", EVP_des_ede)
1120: else TEST_CIPHER("DES-EDE3", EVP_des_ede3)
1121: else TEST_CIPHER("DES-EDE-ECB", EVP_des_ede_ecb)
1122: else TEST_CIPHER("DES-EDE3-ECB", EVP_des_ede3_ecb)
1123: else TEST_CIPHER("DES-CFB64", EVP_des_cfb64)
1124: else TEST_CIPHER("DES-CFB1", EVP_des_cfb1)
1125: else TEST_CIPHER("DES-CFB8", EVP_des_cfb8)
1126: else TEST_CIPHER("DES-EDE-CFB64", EVP_des_ede_cfb64)
1127: else TEST_CIPHER("DES-EDE3-CFB64", EVP_des_ede3_cfb64)
1128: else TEST_CIPHER("DES-EDE3-CFB1", EVP_des_ede3_cfb1)
1129: else TEST_CIPHER("DES-EDE3-CFB8", EVP_des_ede3_cfb8)
1130: else TEST_CIPHER("DES-OFB", EVP_des_ofb)
1131: else TEST_CIPHER("DES-EDE-OFB", EVP_des_ede_ofb)
1132: else TEST_CIPHER("DES-EDE3-OFB", EVP_des_ede3_ofb)
1133: else TEST_CIPHER("DES-CBC", EVP_des_cbc)
1134: else TEST_CIPHER("DES-EDE-CBC", EVP_des_ede_cbc)
1135: else TEST_CIPHER("DES-EDE3-CBC", EVP_des_ede3_cbc)
1136: else TEST_CIPHER("DESX-CBC", EVP_desx_cbc)
1137: else
1138: {
1139: free(tampon);
1140:
1141: liberation(s_etat_processus, s_objet_argument_1);
1142: liberation(s_etat_processus, s_objet_argument_2);
1143:
1144: (*s_etat_processus).erreur_execution =
1145: d_ex_chiffrement_indisponible;
1146: return;
1147: }
1148: # else
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: # endif
1158: }
1159: else if (strncmp(tampon, "RC4", 3) == 0)
1160: {
1161: # ifndef OPENSSL_NO_RC4
1162: TEST_CIPHER("RC4", EVP_rc4)
1163: else TEST_CIPHER("RC4-40", EVP_rc4_40)
1164: else
1165: {
1166: free(tampon);
1167:
1168: liberation(s_etat_processus, s_objet_argument_1);
1169: liberation(s_etat_processus, s_objet_argument_2);
1170:
1171: (*s_etat_processus).erreur_execution =
1172: d_ex_chiffrement_indisponible;
1173: return;
1174: }
1175: # else
1176: free(tampon);
1177:
1178: liberation(s_etat_processus, s_objet_argument_1);
1179: liberation(s_etat_processus, s_objet_argument_2);
1180:
1181: (*s_etat_processus).erreur_execution =
1182: d_ex_chiffrement_indisponible;
1183: return;
1184: # endif
1185: }
1186: else if (strncmp(tampon, "IDEA", 4) == 0)
1187: {
1188: # ifndef OPENSSL_NO_IDEA
1189: TEST_CIPHER("IDEA-ECB", EVP_idea_ecb)
1190: else TEST_CIPHER("IDEA-CFB64", EVP_idea_cfb64)
1191: else TEST_CIPHER("IDEA-OFB", EVP_idea_ofb)
1192: else TEST_CIPHER("IDEA-CBC", EVP_idea_cbc)
1193: else
1194: {
1195: free(tampon);
1196:
1197: liberation(s_etat_processus, s_objet_argument_1);
1198: liberation(s_etat_processus, s_objet_argument_2);
1199:
1200: (*s_etat_processus).erreur_execution =
1201: d_ex_chiffrement_indisponible;
1202: return;
1203: }
1204: # else
1205: free(tampon);
1206:
1207: liberation(s_etat_processus, s_objet_argument_1);
1208: liberation(s_etat_processus, s_objet_argument_2);
1209:
1210: (*s_etat_processus).erreur_execution =
1211: d_ex_chiffrement_indisponible;
1212: return;
1213: # endif
1214: }
1215: else if (strncmp(tampon, "RC2", 3) == 0)
1216: {
1217: # ifndef OPENSSL_NO_RC2
1218: TEST_CIPHER("RC2-ECB", EVP_rc2_ecb)
1219: else TEST_CIPHER("RC2-CBC", EVP_rc2_cbc)
1220: else TEST_CIPHER("RC2-40-CBC", EVP_rc2_40_cbc)
1221: else TEST_CIPHER("RC2-64-CBC", EVP_rc2_64_cbc)
1222: else TEST_CIPHER("RC2-CFB64", EVP_rc2_cfb64)
1223: else TEST_CIPHER("RC2-OFB", EVP_rc2_ofb)
1224: else
1225: {
1226: free(tampon);
1227:
1228: liberation(s_etat_processus, s_objet_argument_1);
1229: liberation(s_etat_processus, s_objet_argument_2);
1230:
1231: (*s_etat_processus).erreur_execution =
1232: d_ex_chiffrement_indisponible;
1233: return;
1234: }
1235: # else
1236: free(tampon);
1237:
1238: liberation(s_etat_processus, s_objet_argument_1);
1239: liberation(s_etat_processus, s_objet_argument_2);
1240:
1241: (*s_etat_processus).erreur_execution =
1242: d_ex_chiffrement_indisponible;
1243: return;
1244: # endif
1245: }
1246: else if (strncmp(tampon, "BF", 2) == 0)
1247: {
1248: # ifndef OPENSSL_NO_BF
1249: TEST_CIPHER("BF-ECB", EVP_bf_ecb)
1250: else TEST_CIPHER("BF-CBC", EVP_bf_cbc)
1251: else TEST_CIPHER("BF-CFB64", EVP_bf_cfb64)
1252: else TEST_CIPHER("BF-OFB", EVP_bf_ofb)
1253: else
1254: {
1255: free(tampon);
1256:
1257: liberation(s_etat_processus, s_objet_argument_1);
1258: liberation(s_etat_processus, s_objet_argument_2);
1259:
1260: (*s_etat_processus).erreur_execution =
1261: d_ex_chiffrement_indisponible;
1262: return;
1263: }
1264: # else
1265: free(tampon);
1266:
1267: liberation(s_etat_processus, s_objet_argument_1);
1268: liberation(s_etat_processus, s_objet_argument_2);
1269:
1270: (*s_etat_processus).erreur_execution =
1271: d_ex_chiffrement_indisponible;
1272: return;
1273: # endif
1274: }
1275: else if (strncmp(tampon, "CAST5", 5) == 0)
1276: {
1277: # ifndef OPENSSL_NO_CAST
1278: TEST_CIPHER("CAST5-ECB", EVP_cast5_ecb)
1279: else TEST_CIPHER("CAST5-CBC", EVP_cast5_cbc)
1280: else TEST_CIPHER("CAST5-CFB64", EVP_cast5_cfb64)
1281: else TEST_CIPHER("CAST5-OFB", EVP_cast5_ofb)
1282: else
1283: {
1284: free(tampon);
1285:
1286: liberation(s_etat_processus, s_objet_argument_1);
1287: liberation(s_etat_processus, s_objet_argument_2);
1288:
1289: (*s_etat_processus).erreur_execution =
1290: d_ex_chiffrement_indisponible;
1291: return;
1292: }
1293: # else
1294: free(tampon);
1295:
1296: liberation(s_etat_processus, s_objet_argument_1);
1297: liberation(s_etat_processus, s_objet_argument_2);
1298:
1299: (*s_etat_processus).erreur_execution =
1300: d_ex_chiffrement_indisponible;
1301: return;
1302: # endif
1303: }
1304: else if (strncmp(tampon, "RC5", 3) == 0)
1305: {
1306: # ifndef OPENSSL_NO_RC5
1307: TEST_CIPHER("RC5-32-12-16-ECB", EVP_rc5_32_12_16_ebc)
1308: else TEST_CIPHER("RC5-32-12-16-CBC", EVP_rc5_32_12_16_cbc)
1309: else TEST_CIPHER("RC5-32-12-16-CFB64", EVP_rc5_32_12_16_cfb64)
1310: else TEST_CIPHER("RC5-32-12-16-OFB", EVP_rc5_32_12_16_ofb)
1311: else
1312: {
1313: free(tampon);
1314:
1315: liberation(s_etat_processus, s_objet_argument_1);
1316: liberation(s_etat_processus, s_objet_argument_2);
1317:
1318: (*s_etat_processus).erreur_execution =
1319: d_ex_chiffrement_indisponible;
1320: return;
1321: }
1322: # else
1323: free(tampon);
1324:
1325: liberation(s_etat_processus, s_objet_argument_1);
1326: liberation(s_etat_processus, s_objet_argument_2);
1327:
1328: (*s_etat_processus).erreur_execution =
1329: d_ex_chiffrement_indisponible;
1330: return;
1331: # endif
1332: }
1333: else if (strncmp(tampon, "AES", 3) == 0)
1334: {
1335: # ifndef OPENSSL_NO_AES
1336: TEST_CIPHER("AES-128-ECB", EVP_aes_128_ecb)
1337: else TEST_CIPHER("AES-128-CBC", EVP_aes_128_cbc)
1338: else TEST_CIPHER("AES-128-CFB1", EVP_aes_128_cfb1)
1339: else TEST_CIPHER("AES-128-CFB8", EVP_aes_128_cfb8)
1340: else TEST_CIPHER("AES-128-CFB128", EVP_aes_128_cfb128)
1341: else TEST_CIPHER("AES-128-OFB", EVP_aes_128_ofb)
1342: else TEST_CIPHER("AES-128-CTR", EVP_aes_128_ctr)
1343: else TEST_CIPHER("AES-128-CCM", EVP_aes_128_ccm)
1344: else TEST_CIPHER("AES-128-GCM", EVP_aes_128_gcm)
1345: else TEST_CIPHER("AES-128-XTS", EVP_aes_128_xts)
1346: else TEST_CIPHER("AES-192-ECB", EVP_aes_192_ecb)
1347: else TEST_CIPHER("AES-192-CBC", EVP_aes_192_cbc)
1348: else TEST_CIPHER("AES-192-CFB1", EVP_aes_192_cfb1)
1349: else TEST_CIPHER("AES-192-CFB8", EVP_aes_192_cfb8)
1350: else TEST_CIPHER("AES-192-CFB128", EVP_aes_192_cfb128)
1351: else TEST_CIPHER("AES-192-OFB", EVP_aes_192_ofb)
1352: else TEST_CIPHER("AES-192-CTR", EVP_aes_192_ctr)
1353: else TEST_CIPHER("AES-192-CCM", EVP_aes_192_ccm)
1354: else TEST_CIPHER("AES-192-GCM", EVP_aes_192_gcm)
1355: else TEST_CIPHER("AES-256-ECB", EVP_aes_256_ecb)
1356: else TEST_CIPHER("AES-256-CBC", EVP_aes_256_cbc)
1357: else TEST_CIPHER("AES-256-CFB1", EVP_aes_256_cfb1)
1358: else TEST_CIPHER("AES-256-CFB8", EVP_aes_256_cfb8)
1359: else TEST_CIPHER("AES-256-CFB128", EVP_aes_256_cfb128)
1360: else TEST_CIPHER("AES-256-OFB", EVP_aes_256_ofb)
1361: else TEST_CIPHER("AES-256-CTR", EVP_aes_256_ctr)
1362: else TEST_CIPHER("AES-256-CCM", EVP_aes_256_ccm)
1363: else TEST_CIPHER("AES-256-GCM", EVP_aes_256_gcm)
1364: else TEST_CIPHER("AES-256-XTS", EVP_aes_256_xts)
1365: else
1366: {
1367: free(tampon);
1368:
1369: liberation(s_etat_processus, s_objet_argument_1);
1370: liberation(s_etat_processus, s_objet_argument_2);
1371:
1372: (*s_etat_processus).erreur_execution =
1373: d_ex_chiffrement_indisponible;
1374: return;
1375: }
1376: # else
1377: free(tampon);
1378:
1379: liberation(s_etat_processus, s_objet_argument_1);
1380: liberation(s_etat_processus, s_objet_argument_2);
1381:
1382: (*s_etat_processus).erreur_execution =
1383: d_ex_chiffrement_indisponible;
1384: return;
1385: # endif
1386: }
1387: else if (strncmp(tampon, "CAMELLIA", 8) == 0)
1388: {
1389: # ifndef OPENSSL_NO_CAMELLIA
1390: TEST_CIPHER("CAMELLIA-128-ECB", EVP_camellia_128_ecb)
1391: else TEST_CIPHER("CAMELLIA-128-CBC", EVP_camellia_128_cbc)
1392: else TEST_CIPHER("CAMELLIA-128-CFB1", EVP_camellia_128_cfb1)
1393: else TEST_CIPHER("CAMELLIA-128-CFB8", EVP_camellia_128_cfb8)
1394: else TEST_CIPHER("CAMELLIA-128-CFB128", EVP_camellia_128_cfb128)
1395: else TEST_CIPHER("CAMELLIA-128-OFB", EVP_camellia_128_ofb)
1396: else TEST_CIPHER("CAMELLIA-192-ECB", EVP_camellia_128_ecb)
1397: else TEST_CIPHER("CAMELLIA-192-CBC", EVP_camellia_192_cbc)
1398: else TEST_CIPHER("CAMELLIA-192-CFB1", EVP_camellia_192_cfb1)
1399: else TEST_CIPHER("CAMELLIA-192-CFB8", EVP_camellia_192_cfb8)
1400: else TEST_CIPHER("CAMELLIA-192-CFB128", EVP_camellia_192_cfb128)
1401: else TEST_CIPHER("CAMELLIA-192-OFB", EVP_camellia_192_ofb)
1402: else TEST_CIPHER("CAMELLIA-256-ECB", EVP_camellia_256_ecb)
1403: else TEST_CIPHER("CAMELLIA-256-CBC", EVP_camellia_256_cbc)
1404: else TEST_CIPHER("CAMELLIA-256-CFB1", EVP_camellia_256_cfb1)
1405: else TEST_CIPHER("CAMELLIA-256-CFB8", EVP_camellia_256_cfb8)
1406: else TEST_CIPHER("CAMELLIA-256-CFB128", EVP_camellia_256_cfb128)
1407: else TEST_CIPHER("CAMELLIA-256-OFB", EVP_camellia_256_ofb)
1408: else
1409: {
1410: free(tampon);
1411:
1412: liberation(s_etat_processus, s_objet_argument_1);
1413: liberation(s_etat_processus, s_objet_argument_2);
1414:
1415: (*s_etat_processus).erreur_execution =
1416: d_ex_chiffrement_indisponible;
1417: return;
1418: }
1419: # else
1420: free(tampon);
1421:
1422: liberation(s_etat_processus, s_objet_argument_1);
1423: liberation(s_etat_processus, s_objet_argument_2);
1424:
1425: (*s_etat_processus).erreur_execution =
1426: d_ex_chiffrement_indisponible;
1427: return;
1428: # endif
1429: }
1430: else if (strncmp(tampon, "SEED", 4) == 0)
1431: {
1432: # ifndef OPENSSL_NO_SEED
1433: TEST_CIPHER("SEED-ECB", EVP_seed_ecb)
1434: else TEST_CIPHER("SEED-CBC", EVP_seed_cbc)
1435: else TEST_CIPHER("SEED-CFB128", EVP_seed_cfb128)
1436: else TEST_CIPHER("SEED-OFB", EVP_seed_ofb)
1437: else
1438: {
1439: free(tampon);
1440:
1441: liberation(s_etat_processus, s_objet_argument_1);
1442: liberation(s_etat_processus, s_objet_argument_2);
1443:
1444: (*s_etat_processus).erreur_execution =
1445: d_ex_chiffrement_indisponible;
1446: return;
1447: }
1448: # else
1449: free(tampon);
1450:
1451: liberation(s_etat_processus, s_objet_argument_1);
1452: liberation(s_etat_processus, s_objet_argument_2);
1453:
1454: (*s_etat_processus).erreur_execution =
1455: d_ex_chiffrement_indisponible;
1456: return;
1457: # endif
1458: }
1459: else
1460: {
1461: free(tampon);
1462:
1463: liberation(s_etat_processus, s_objet_argument_1);
1464: liberation(s_etat_processus, s_objet_argument_2);
1465:
1466: (*s_etat_processus).erreur_execution = d_ex_chiffrement_indisponible;
1467: return;
1468: }
1469:
1470: free(tampon);
1471:
1472: if (generation_clef == d_vrai)
1473: {
1474: if ((iv = malloc(((size_t) EVP_CIPHER_iv_length(EVP_chiffrement))
1475: * sizeof(unsigned char))) == NULL)
1476: {
1477: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1478: return;
1479: }
1480:
1481: if ((clef = malloc(((size_t) EVP_CIPHER_key_length(EVP_chiffrement))
1482: * sizeof(unsigned char))) == NULL)
1483: {
1484: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1485: return;
1486: }
1487:
1488: longueur_clef = EVP_BytesToKey(EVP_chiffrement, EVP_sum,
1489: (unsigned char *) &sel, (unsigned char *)
1490: (*s_objet_argument_2).objet,
1491: (int) longueur_chaine(s_etat_processus,
1492: (unsigned char *) (*s_objet_argument_2).objet),
1493: (int) nombre_cycles, clef, iv);
1494:
1495: if (longueur_clef != EVP_CIPHER_key_length(EVP_chiffrement))
1496: {
1497: free(iv);
1498: free(clef);
1499:
1500: liberation(s_etat_processus, s_objet_argument_1);
1501: liberation(s_etat_processus, s_objet_argument_2);
1502:
1503: (*s_etat_processus).erreur_execution = d_ex_chiffrement;
1504: return;
1505: }
1506:
1507: if ((s_objet_resultat_1 = allocation(s_etat_processus, LST)) == NULL)
1508: {
1509: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1510: return;
1511: }
1512:
1513: if (((*s_objet_resultat_1).objet = allocation_maillon(s_etat_processus))
1514: == NULL)
1515: {
1516: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1517: return;
1518: }
1519:
1520: l_element_courant = (*s_objet_resultat_1).objet;
1521:
1522: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1523: == NULL)
1524: {
1525: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1526: return;
1527: }
1528:
1529: if (((*(*l_element_courant).donnee).objet = malloc(
1530: (strlen(algorithme_chiffrement) + 1) * sizeof(unsigned char)))
1531: == NULL)
1532: {
1533: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1534: return;
1535: }
1536:
1537: strcpy((*(*l_element_courant).donnee).objet, algorithme_chiffrement);
1538:
1539: if (((*l_element_courant).suivant = allocation_maillon(
1540: s_etat_processus)) == NULL)
1541: {
1542: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1543: return;
1544: }
1545:
1546: l_element_courant = (*l_element_courant).suivant;
1547:
1548: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1549: == NULL)
1550: {
1551: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1552: return;
1553: }
1554:
1555: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1556: s_etat_processus, clef,
1557: EVP_CIPHER_key_length(EVP_chiffrement))) == NULL)
1558: {
1559: return;
1560: }
1561:
1562: free(clef);
1563:
1564: if (((*l_element_courant).suivant = allocation_maillon(
1565: s_etat_processus)) == NULL)
1566: {
1567: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1568: return;
1569: }
1570:
1571: l_element_courant = (*l_element_courant).suivant;
1572: (*l_element_courant).suivant = NULL;
1573:
1574: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1575: == NULL)
1576: {
1577: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1578: return;
1579: }
1580:
1581: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1582: s_etat_processus, iv,
1583: EVP_CIPHER_iv_length(EVP_chiffrement))) == NULL)
1584: {
1585: return;
1586: }
1587:
1588: free(iv);
1589:
1590: liberation(s_etat_processus, s_objet_argument_1);
1591: liberation(s_etat_processus, s_objet_argument_2);
1592:
1593: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1594: s_objet_resultat_1) == d_erreur)
1595: {
1596: return;
1597: }
1598: }
1599: else
1600: {
1601: // Chiffrement ou déchiffrement
1602:
1603: if (strcmp(direction, "ENCRYPT") == 0)
1604: {
1605: encodage = d_vrai;
1606: }
1607: else if (strcmp(direction, "DECRYPT") == 0)
1608: {
1609: encodage = d_faux;
1610: }
1611: else
1612: {
1613: free(direction);
1614: liberation(s_etat_processus, s_objet_argument_1);
1615: liberation(s_etat_processus, s_objet_argument_2);
1616:
1617: (*s_etat_processus).erreur_execution =
1618: d_ex_argument_invalide;
1619: return;
1620: }
1621:
1622: free(direction);
1623:
1624: // Conversion des clefs
1625:
1626: if ((clef_binaire = formateur_flux(s_etat_processus, clef,
1627: &longueur_clef_binaire)) == NULL)
1628: {
1629: return;
1630: }
1631:
1632: if ((iv_binaire = formateur_flux(s_etat_processus, iv,
1633: &longueur_iv_binaire)) == NULL)
1634: {
1635: return;
1636: }
1637:
1638: // Vérification de la longueur des clef et vecteur d'initialisation
1639:
1640: if (longueur_clef_binaire != EVP_CIPHER_key_length(EVP_chiffrement))
1641: {
1642: free(clef_binaire);
1643: free(iv_binaire);
1644:
1645: liberation(s_etat_processus, s_objet_argument_1);
1646: liberation(s_etat_processus, s_objet_argument_2);
1647:
1648: (*s_etat_processus).erreur_execution =
1649: d_ex_longueur_clef_chiffrement;
1650: return;
1651: }
1652:
1653: if (longueur_iv_binaire != EVP_CIPHER_iv_length(EVP_chiffrement))
1654: {
1655: free(clef_binaire);
1656: free(iv_binaire);
1657:
1658: liberation(s_etat_processus, s_objet_argument_1);
1659: liberation(s_etat_processus, s_objet_argument_2);
1660:
1661: (*s_etat_processus).erreur_execution =
1662: d_ex_longueur_clef_chiffrement;
1663: return;
1664: }
1665:
1666: if ((message = formateur_flux(s_etat_processus, (unsigned char *)
1667: (*s_objet_argument_2).objet, &longueur_message)) == NULL)
1668: {
1669: return;
1670: }
1671:
1672: if ((message_chiffre = chiffrement(EVP_chiffrement, encodage, message,
1673: longueur_message, clef_binaire, longueur_clef_binaire,
1674: iv_binaire, &longueur_message_chiffre)) == NULL)
1675: {
1676: free(clef_binaire);
1677: free(iv_binaire);
1678: free(message);
1679:
1680: liberation(s_etat_processus, s_objet_argument_1);
1681: liberation(s_etat_processus, s_objet_argument_2);
1682:
1683: (*s_etat_processus).erreur_execution = d_ex_chiffrement;
1684: return;
1685: }
1686:
1687: free(clef_binaire);
1688: free(message);
1689:
1690: if ((s_objet_resultat_2 = allocation(s_etat_processus, CHN)) == NULL)
1691: {
1692: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1693: return;
1694: }
1695:
1696: if (((*s_objet_resultat_2).objet = analyse_flux(s_etat_processus,
1697: message_chiffre, longueur_message_chiffre)) == NULL)
1698: {
1699: return;
1700: }
1701:
1702: free(message_chiffre);
1703:
1704: if ((s_objet_resultat_1 = allocation(s_etat_processus, LST)) == NULL)
1705: {
1706: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1707: return;
1708: }
1709:
1710: if (((*s_objet_resultat_1).objet = allocation_maillon(s_etat_processus))
1711: == NULL)
1712: {
1713: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1714: return;
1715: }
1716:
1717: l_element_courant = (*s_objet_resultat_1).objet;
1718:
1719: // Direction
1720:
1721: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1722: == NULL)
1723: {
1724: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1725: return;
1726: }
1727:
1728: if (((*(*l_element_courant).donnee).objet =
1729: malloc(8 * sizeof(unsigned char))) == NULL)
1730: {
1731: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1732: return;
1733: }
1734:
1735: strcpy((*(*l_element_courant).donnee).objet,
1736: (encodage == d_vrai) ? "ENCRYPT" : "DECRYPT");
1737:
1738: // Type de chiffrement
1739:
1740: if (((*l_element_courant).suivant = allocation_maillon(
1741: s_etat_processus)) == NULL)
1742: {
1743: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1744: return;
1745: }
1746:
1747: l_element_courant = (*l_element_courant).suivant;
1748:
1749: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1750: == NULL)
1751: {
1752: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1753: return;
1754: }
1755:
1756: if (((*(*l_element_courant).donnee).objet =
1757: conversion_majuscule(algorithme_chiffrement)) == NULL)
1758: {
1759: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1760: return;
1761: }
1762:
1763: // Clef
1764:
1765: if (((*l_element_courant).suivant = allocation_maillon(
1766: s_etat_processus)) == NULL)
1767: {
1768: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1769: return;
1770: }
1771:
1772: l_element_courant = (*l_element_courant).suivant;
1773:
1774: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1775: == NULL)
1776: {
1777: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1778: return;
1779: }
1780:
1781: if (((*(*l_element_courant).donnee).objet =
1782: malloc((strlen(clef) + 1) * sizeof(unsigned char))) == NULL)
1783: {
1784: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1785: return;
1786: }
1787:
1788: strcpy((*(*l_element_courant).donnee).objet, clef);
1789:
1790: // Vecteur d'initialisation
1791:
1792: if (((*l_element_courant).suivant = allocation_maillon(
1793: s_etat_processus)) == NULL)
1794: {
1795: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1796: return;
1797: }
1798:
1799: l_element_courant = (*l_element_courant).suivant;
1800: (*l_element_courant).suivant = NULL;
1801:
1802: if (((*l_element_courant).donnee = allocation(s_etat_processus, CHN))
1803: == NULL)
1804: {
1805: (*s_etat_processus).erreur_systeme = d_es_allocation_memoire;
1806: return;
1807: }
1808:
1809: if (((*(*l_element_courant).donnee).objet = analyse_flux(
1810: s_etat_processus, iv_binaire, longueur_iv_binaire)) == NULL)
1811: {
1812: return;
1813: }
1814:
1815: free(iv_binaire);
1816:
1817: liberation(s_etat_processus, s_objet_argument_1);
1818: liberation(s_etat_processus, s_objet_argument_2);
1819:
1820: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1821: s_objet_resultat_2) == d_erreur)
1822: {
1823: return;
1824: }
1825:
1826: if (empilement(s_etat_processus, &((*s_etat_processus).l_base_pile),
1827: s_objet_resultat_1) == d_erreur)
1828: {
1829: return;
1830: }
1831: }
1832:
1833: return;
1834: }
1835:
1836: // vim: ts=4
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