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Alice has a friend, Eli.

He has an RSA exponent:

e=3203449890631862429784387098639186217718279446801588954793327039406413404571860724495570135042580234804222431325521830314330004451526819839066981376681301773374420578027311643830854177449788451537218761

with the following RSA modulus N:

N=10000000000000000000000000000000000001000000000000000000000000000000000000000000000000000001056739769590000000000000000000000000006876977059000000000000000000000000000000000000000000006794247018103252941

Alice encrypts the message M with the naive RSA: she computes C = M^e mod N and sends to Eli:

C=4359030522973075720587278601741278446675538995555202673791456378351750902274976685956343503552190031486632797795997420849499709982230510048817085001379603109841297158448468838991422815547684902425140785

Recover the original message M.

Name Solved on
tunelko 2014-12-17 00:26
bait 2014-12-19 14:47
deadmanshat 2014-12-19 14:48
Rost 2014-12-20 16:53
STV_93 2014-12-20 16:53
Kireienko 2014-12-20 18:41
olol 2014-12-20 20:20
unsigned6 2014-12-20 21:41
GreyFox 2014-12-21 10:10
FB-41_NTUU_KPI_PTI_UA 2014-12-21 11:50
madeofsolar 2014-12-24 12:02
Neodyblue 2014-12-29 14:17
hatrix 2015-01-01 12:25
Bmoc 2015-01-02 15:25
Greed_ 2015-01-07 00:40
gourvy 2015-01-26 12:51
722slr 2015-02-25 19:20
plop 2015-02-26 00:52
nanuyokakinu 2015-03-09 16:59
Nomyo 2015-03-31 18:55
RageYL_ 2015-04-26 10:27
Tilon 2015-06-25 14:38
basis 2015-06-26 16:20
eshiho 2015-08-08 17:15
seccamp_group_a 2015-08-08 17:37
193s 2015-08-26 18:47
Bono 2015-09-01 15:09
Charo 2015-09-10 08:35
icchy 2015-09-14 02:17
Fulcrum 2015-10-04 15:11
harvey 2015-11-06 12:57
ftuknights 2015-11-07 11:22
koaidien 2015-11-07 11:23
hama 2015-12-09 03:17
p4p1lio 2015-12-12 02:34
owlinux 2015-12-20 02:31
nomeaning 2015-12-22 18:03
katoumegumi 2015-12-26 08:25
shellisme01 2016-01-04 23:14
kazu 2016-01-22 23:38
pall0c 2016-02-07 10:26
Shellisme 2016-02-11 23:59
akiym 2016-02-12 16:34
takaki 2016-02-28 05:17
jtwp470 2016-03-06 07:15
d2verb 2016-03-29 14:17
f0rki 2016-07-14 18:04
cuti 2016-08-22 12:10
yeuchimse 2016-08-24 19:02
HarDToBelieve 2016-08-31 13:38
greenapple 2016-09-06 15:11
verr 2016-09-07 11:41
x4mp 2016-09-07 12:12
matbrik 2016-09-07 13:06
celeron 2016-09-07 15:39
okiya 2016-09-07 20:03
EvilGeniuses 2016-09-08 14:04
Doflamingo 2016-09-09 12:44
Creed 2016-09-11 13:12
cryptosessiontemp123 2016-09-15 19:29
diegosunshine 2016-09-15 20:55
gast04 2016-09-17 09:56
EKorobov 2016-10-13 22:27
HD67 2016-11-01 15:30
Kyuri 2016-11-08 12:48
anhdaden 2016-11-22 08:29
Ne0Lux-C1Ph3r 2016-12-03 10:12
gen 2016-12-27 03:57
__kaydoubleu__ 2017-01-31 10:36
wolvg 2017-01-31 11:22
LazySloth 2017-01-31 18:59
BZHugs 2017-02-11 13:13
marteun 2017-02-15 15:17
chrisrdlg 2017-02-28 15:55
iansus 2017-03-07 16:29
mosaku 2017-03-12 13:14
mickdermack 2017-03-14 20:06
YouOnlyPragmaOnce 2017-03-15 10:00
orisano 2017-03-15 14:09
giech 2017-03-23 02:06
birabira 2017-03-24 04:05
downey_j 2017-03-26 14:00
regulus 2017-04-05 10:53
ommadawn 2017-05-26 07:50
amok 2017-05-26 10:18
Antoxyde 2017-08-13 21:24
duy 2017-08-20 03:52
totem 2017-09-08 11:59
ngonghia.ctf 2017-10-08 13:03
congacon 2017-10-10 03:07
sisterrain 2017-10-10 09:24
XiaoXiaoHu 2017-10-10 16:26
black_goat 2017-10-12 02:59
vneu 2017-10-26 16:25
null123 2017-11-08 13:25
nguydinhthanh 2017-11-12 06:58
tictactoe 2017-12-08 07:48
badc0ded 2017-12-18 13:48
squalltan2000 2018-02-01 03:35
bmtd 2018-03-06 09:50
darrag_a.epi 2018-03-08 14:58
toune 2018-03-09 21:36
yoshi 2018-04-02 15:58
peterjson 2018-04-27 02:56

Current top 10

Rank Name Points
1st Charo 7091
2nd awe 6736
3rd Creed 6140
4th RageYL_ 5850
5th f0rki 5480
6th wolvg 4976
7th Neodyblue 4021
8th nanuyokakinu 4016
9th takaki 3756
10th Bono 3746
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