Chaînes cryptées
6WDQGDUG '9% &RPPRQ ,QWHUIDFH 3OXV &, 3OXV
"( /KTR DRS TMD UDQRHNM @L±KHNQ±D CT RS@MC@QC #5! "NLLNM (MSDQE@BD
"( /KTR2KNSR RNMS DM OQHMBHOD BNLO@SHAKD @UDB KDR UDQRHNMR RS@MC@QC "(
OQ±B±CDMSDR B
¨C
PTD KD LNCTKD " DS KDR 2L@QS "@QCR RDKNM KD RS@MC@QC
"( @BSTDK ODTUDMS BNMSHMTDQ ¨ ²SQD TSHKHR± C@MR KDR "( /KTR2KNSR C@MR K@
LDRTQD NÀ KD ENTQMHRRDTQ CD OQNFQ@LLD Ki@TSNQHRD
+DR CHQDBSHUDR CDR RS@MC@QCR @BSTDKR UNHQ O@FD 23 RNMS ±F@KDLDMS U@K@AKDR
ONTQ "( /KTR
"DODMC@MS Ci@TSQDR CHQDBSHUDR RiX @INTSDMS
+DR ENTQMHRRDTQR CD OQNFQ@LLD PTH TSHKHRDMS KD RS@MC@QC "( /KTR ODTUDMS
@SSQHATDQ CHEE±QDMSR CQNHSR ONTQ KDR ±LHRRHNMR PTiHKR CHEETRDMS
"DK@ ODQLDS
O@Q DW
CD KHLHSDQ NT HMSDQCHQD KiDMQDFHRSQDLDMS NT K@ KDBSTQD TKS±QHDTQD
CD BDQS@HMDR ±LHRRHNMR BQXOS±DR CT ENTQMHRRDTQ CD OQNFQ@LLD
#@MR KD
B@R CD BDR QDRSQHBSHNMR DKKDR RNMS ±F@KDLDMS U@K@AKDR O@Q K@ RTHSD ONTQ KD
LNCD CHEE±Q± CT S±K±UHRDTQ
2H UNTR RNTG@HSDY DMQDFHRSQDQ TMD ±LHRRHNM CD BDSSD RNQSD TM LDRR@FD
Ri@EEHBGDQ@ RTQ Ki±BQ@M
+iDMQDFHRSQDLDMS DRS C@MR TM SDK B@R DEEDBST± TM
LDRR@FD BNQQDRONMC@MS Ri@EEHBGD C@MR Ki@QBGHUD #1 TMD KDBSTQD TKS±QHDTQD
CD Ki±LHRRHNM MiDRS BDODMC@MS O@R ONRRHAKD NT TMHPTDLDMS CTQ@MS TMD
O±QHNCD KHLHS±D O@Q DW
INTQR
+D C±BQXOS@FD TKS±QHDTQ CiTMD ±LHRRHNM
DMQDFHRSQ±D DM BQXOS±D ODTS ²SQD HMSDQCHSD O@Q KD ENTQMHRRDTQ
#D L²LD KD SQ@MREDQS Ci±LHRRHNMR OQNS±F±DR UDQR CDR RNTQBDR DWSDQMDR
DW
TM #5#1DBNQCDQ ODTS ±F@KDLDMS ²SQD HMSDQCHS O@Q KD ENTQMHRRDTQ CD
OQNFQ@LLD L²LD @OQ°R TM C±BQXOS@FD ±UDMSTDK
2H UNTR RNTG@HSDY DMQDFHRSQDQ TMD ±LHRRHNM "( /KTR LTMH CiTMD R±BTQHS±
IDTMDR O@Q KD ENTQMHRRDTQ CD OQNFQ@LLD HK DRS ±UDMSTDKKDLDMS M±BDRR@HQD
CD R@HRHQ KD BNCD /(-R±BTQHS± IDTMDR CT LNCTKD " KNQR CD K@ OQNFQ@L-
L@SHNM CDR CNMM±DR
/NTQ KHQD TKS±QHDTQDLDMS Ki±LHRRHNM KD BNCD RDBQDS
CT S±K±UHRDTQ RDQ@ M±BDRR@HQD
+@ OQ±RDMS@SHNM CT LDMT CT LNCTKD "
UHRDTQ ODTS @UDB "( /KTR CHEE±QDQ CD K@ OQ±RDMS@SHNM MNQL@KD CT LDMT
CT S±K±UHRDTQ
- 24
UNHQ LNCD CiDLOKNH CT S±K±-
0LVH j MRXU ORJLFLHO DYHF PRGXOHV &$ FRPSDWLEOHV &, 3OXV
(K ODTS DWHRSDQ CD SDLOR DM SDLOR CD MNTUD@TW KNFHBHDKR CiDWOKNHS@SHNM
ONTQ KD KNFHBHDK CD UNSQD LNCTKD "
(K X @ C@MR BD B@R CDTW RNQSDR CD
LHRD ¨ INTQ KNFHBHDK
,HRD ¨ INTQ BNMRDHKK±D
4M LDRR@FD UNTR @UDQSHRR@MS CiTMD LHRD ¨ INTQ CHRONMHAKD @OO@Q@¶S
5NTR
ONTUDY KiDEEDBSTDQ NT HMSDQQNLOQD KD OQNBDRRTR
2H UNTR KiHMSDQQNLODY
KD LDRR@FD Ri@EEHBGDQ@ ¨ HMSDQU@KKD Q±FTKHDQ ITRPTi¨ BD PTD K@ LHRD ¨ INTQ
RNHS DEEDBST±D
,HRD ¨ INTQ NAKHF@SNHQD
4M LDRR@FD UNTR @UDQSHRR@MS CiTMD LHRD ¨ INTQ CHRONMHAKD @OO@Q@¶S
+D
LNCTKD MD C±BQXOSD OKTR ITRPTi¨ BD PTD K@ LHRD ¨ INTQ RNHS DEEDBST±D
avec succès.
$LGH HQ FDV G¶HUUHXUV
$M B@R CD OQNAK°LDR KNQR CD KiTSHKHR@SHNM CiTM LNCTKD " KDR ONHMSR
RTHU@MSR ODTUDMS UNTR @HCDQ
,DSSDY KD S±K±UHRDTQ DM LNCD UDHKKD
1DSHQDY KD LNCTKD " CT S±K±UHRDTQ
$SDHFMDY DMSH°QDLDMS UNSQD S±K±UHRDTQ
SSDMCDY PTDKPTDR RDBNMCDR
1DBNMMDBSDY KD LNCTKD "
1@KKTLDY UNSQD S±K±UHRDTQ
2H CDR DQQDTQR BNMSHMTDMS ¨ RTQUDMHQ MNSDY KD BNCD CjDQQDTQ ¨ CDTW
BGHEEQDR PTH Rj@EEHBGD TMHPTDLDMS RTQ KDR LNCTKDR " BNLO@SHAKDR "(
/KTR
"NMS@BSDY UNSQD RDQUHBD @OQ°RUDMSD SDBGMHPTD
5NTR SQNTUDQDY KDR
@CQDRRDR CD RDQUHBD @OQ°RUDMSD C@MR K@ MNSHBD CjTSHKHR@SHNM CT S±K±UHRDTQ