Alice has two friends: Daniel and Daniel. So, to distinguish them, she calls
them D1 and D2.
They both have a different RSA exponent: D1 uses e1=5, and D2 uses e2=7,
but, unfortunately, have an identical RSA modulus N:
N=100000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000267000000000000000000000000000000000000000000000062211
Alice encrypts a unique message M with the naive RSA: she computes and sends:
C1 = M^e1 mod N to D1,C2 = M^e2 mod N to D2.She sends:
C1=48422511473521990375450896712899456383681349730838556629917526122372944503717161611542955850315226184440439228437399447916137445172653220231750594300230934894206506460735998916154380260461651842230328
C2=36935080566066809987512294593587165922689453239298365979934220773749515302662979395941264100472936036371948284005185898445333990657405117584787357541912376801751380784444605679758201704557692583862275
Recover the original message M.
| Name | Solved on |
|---|---|
| tunelko | 2014-12-17 00:32 |
| leonidkokhnovych | 2014-12-19 13:48 |
| denstadnyk | 2014-12-19 13:51 |
| deadmanshat | 2014-12-19 18:41 |
| bait | 2014-12-19 18:41 |
| Rost | 2014-12-20 17:44 |
| STV_93 | 2014-12-20 17:44 |
| Avenger93 | 2014-12-20 17:45 |
| GreyFox | 2014-12-20 18:03 |
| Kireienko | 2014-12-20 18:42 |
| olol | 2014-12-20 23:56 |
| unsigned6 | 2014-12-20 23:59 |
| FB-41_NTUU_KPI_PTI_UA | 2014-12-21 11:50 |
| madeofsolar | 2014-12-24 14:14 |
| Neodyblue | 2014-12-28 18:47 |
| hatrix | 2014-12-29 16:34 |
| snaipe | 2014-12-30 12:22 |
| Bmoc | 2014-12-31 15:16 |
| Greed_ | 2015-01-06 22:45 |
| gourvy | 2015-01-31 12:42 |
| Nomyo | 2015-02-20 05:29 |
| plop | 2015-02-24 13:28 |
| RageYL_ | 2015-04-21 16:51 |
| Tilon | 2015-06-19 19:45 |
| basis | 2015-06-26 16:41 |
| saiki | 2015-06-29 13:41 |
| eshiho | 2015-08-08 17:17 |
| seccamp_group_a | 2015-08-08 17:36 |
| 193s | 2015-08-26 18:59 |
| nanuyokakinu | 2015-08-28 14:31 |
| Bono | 2015-09-01 15:09 |
| Charo | 2015-09-10 10:11 |
| Fulcrum | 2015-10-04 13:38 |
| harvey | 2015-11-06 13:11 |
| hama | 2015-12-09 03:27 |
| kev | 2015-12-09 09:39 |
| katoumegumi | 2015-12-12 13:57 |
| owlinux | 2015-12-20 01:45 |
| nomeaning | 2015-12-22 18:00 |
| pall0c | 2016-02-07 09:35 |
| Shellisme | 2016-02-12 01:59 |
| akiym | 2016-02-12 16:26 |
| p4p1lio | 2016-02-13 22:36 |
| takaki | 2016-02-28 05:09 |
| d2verb | 2016-03-09 16:48 |
| jtwp470 | 2016-03-24 08:44 |
| wxbn | 2016-06-24 21:02 |
| f0rki | 2016-07-14 17:41 |
| x4mp | 2016-08-18 11:50 |
| cuti | 2016-08-29 16:50 |
| yeuchimse | 2016-08-30 10:29 |
| matbrik | 2016-09-07 13:07 |
| celeron | 2016-09-07 15:43 |
| EvilGeniuses | 2016-09-08 14:32 |
| koaidien | 2016-09-08 16:21 |
| okiya | 2016-09-08 18:56 |
| Doflamingo | 2016-09-09 15:20 |
| Creed | 2016-09-11 13:29 |
| cryptosessiontemp123 | 2016-09-15 19:36 |
| diegosunshine | 2016-09-15 20:59 |
| gast04 | 2016-09-17 10:12 |
| marteun | 2016-10-07 09:58 |
| EKorobov | 2016-10-11 00:33 |
| HD67 | 2016-11-04 07:03 |
| Kyuri | 2016-11-08 09:40 |
| Ne0Lux-C1Ph3r | 2016-11-30 10:05 |
| LazySloth | 2016-12-09 18:19 |
| WoLf_56 | 2016-12-13 21:42 |
| Achi | 2016-12-14 13:17 |
| gen | 2016-12-26 05:51 |
| daasdingo | 2017-01-13 18:44 |
| wolvg | 2017-01-13 18:44 |
| __kaydoubleu__ | 2017-01-13 19:26 |
| Kh4L | 2017-01-17 01:14 |
| YouOnlyPragmaOnce | 2017-01-23 20:33 |
| Issun | 2017-01-24 00:14 |
| BZHugs | 2017-02-11 13:55 |
| chrisrdlg | 2017-02-28 16:38 |
| downey_j | 2017-03-02 11:01 |
| mosaku | 2017-03-12 12:22 |
| mickdermack | 2017-03-15 13:55 |
| orisano | 2017-03-15 14:29 |
| giech | 2017-03-23 01:59 |
| birabira | 2017-03-24 03:53 |
| regulus | 2017-04-05 10:24 |
| tydef123 | 2017-04-26 19:49 |
| amok | 2017-05-15 20:52 |
| ommadawn | 2017-05-25 12:27 |
| FumesOver | 2017-07-15 18:11 |
| lowener | 2017-08-05 05:03 |
| Antoxyde | 2017-08-13 21:18 |
| duy | 2017-08-21 09:22 |
| multun | 2017-08-21 14:10 |
| totem | 2017-09-08 01:30 |
| ngonghia.ctf | 2017-10-08 13:01 |
| congacon | 2017-10-10 03:13 |
| sisterrain | 2017-10-10 09:24 |
| XiaoXiaoHu | 2017-10-10 16:21 |
| black_goat | 2017-10-12 03:05 |
| vneu | 2017-10-26 18:01 |
| liworada@p33.org | 2017-11-06 23:22 |
| null123 | 2017-11-08 05:11 |
| nguydinhthanh | 2017-11-12 07:30 |
| csej | 2017-11-24 14:15 |
| tictactoe | 2017-12-08 07:56 |
| badc0ded | 2017-12-18 13:17 |
| Sideway | 2018-01-12 18:57 |
| squalltan2000 | 2018-01-13 03:38 |
| darrag_a.epi | 2018-03-05 00:20 |
| bmtd | 2018-03-06 09:52 |
| toune | 2018-03-09 21:55 |
| Crimson-Ciruela | 2018-03-16 09:16 |
| yoshi | 2018-04-02 15:51 |
| peterjson | 2018-04-27 03:00 |
| onsd_ | 2018-05-10 10:49 |