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Challenges
Cryptanalysis
ECDHE
60 Points
Diffie-Hellman key exchange on elliptic curves
Author
Tosh
,
20 November 2016
Level
Validations
222 Challengers
1%
Note
1
2
3
4
5
45 Votes
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Challenge Results
Pseudo
Challenge
Lang
Date
0xf4b
ECDHE
21 November 2016 at 11:25
jb__
ECDHE
21 November 2016 at 01:13
...
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220
69
Challenges
Results
Name
Validations
Number of points
Difficulty
Author
Note
Solution
Date
Encoding - ASCII
26%
84082
5
Xartrick
10
4 December 2012
Encoding - UU
20%
64896
5
g0uZ
10
7 October 2006
Hash - DCC
2%
6224
5
Podalirius
1
13 July 2021
Hash - DCC2
2%
5868
5
Podalirius
1
13 July 2021
Hash - LM
2%
6372
5
Podalirius
1
13 July 2021
Hash - Message Digest 5
18%
58145
5
g0uZ
7
31 January 2010
Hash - NT
2%
5035
5
Podalirius
1
13 July 2021
Hash - SHA-2
10%
30514
5
koma
4
3 June 2012
Shift cipher
6%
19038
10
m31z0nyx
10
16 February 2011
CISCO - Salted Password
2%
4147
10
Tidusrose
3
13 July 2021
Pixel Madness
5%
14958
15
Ryscrow
10
3 February 2011
ELF64 - PID encryption
3%
7402
15
Lu33Y
10
8 February 2012
File - PKZIP
4%
11968
15
g0uZ
6
30 August 2010
Monoalphabetic substitution - Caesar
5%
15191
15
Arod
5
22 October 2011
Circular Bit Shift
1%
608
20
BlackRaven
3
21 March 2023
Known plaintext - XOR
3%
8364
20
Ryscrow
5
3 February 2011
Code - Pseudo Random Number Generator
1%
3217
20
Tosh
6
19 December 2012
Encoding - Codebook
1%
240
20
n3rada
1
21 March 2023
File - Insecure storage 1
3%
8713
20
g0uZ
7
6 February 2012
Polyalphabetic substitution - Vigenère
3%
9610
20
Arod
3
26 October 2011
System - Android lock pattern
2%
6353
20
Silentd
5
23 December 2012
Transposition - Rail Fence
2%
5938
20
YellowS4
4
6 April 2014
AES - CBC - Bit-Flipping Attack
1%
1530
25
Tie21
4
17 June 2018
AES - ECB
1%
2463
25
cez40
4
29 November 2015
AES - ECB - Copy Paste
1%
144
25
Vozec
1
5 February 2024
LFSR - Known plaintext
1%
914
25
Brissouille
2
28 November 2017
RSA - Factorisation
2%
4530
25
HacKSpider
5
12 September 2010
RSA - Decipher Oracle
1%
1837
25
Zweisamkeit
3
11 May 2017
Service - Timing attack
1%
2705
25
g0uZ
,
koma
4
28 October 2012
Monoalphabetic substitution - Polybe
2%
3639
25
koma
6
6 December 2011
Twisted secret
1%
430
25
NonStandardModel
1
14 August 2020
Initialisation Vector
1%
2032
25
manticore
,
notfound404
6
25 August 2015
Hill Cipher
1%
151
30
LetMeR00t
0
21 March 2023
GEDEFU
1%
549
30
makhno
1
13 September 2016
OTP - Implementation error
1%
383
30
Podalirius
2
22 March 2021
RSA - Corrupted key 1
1%
406
30
blackndoor
2
28 November 2017
RSA - Continued fractions
1%
1350
30
sambecks
1
8 September 2015
RSA - Common modulus
1%
1836
30
franb
3
24 December 2016
Service - Hash length extension attack
1%
1117
30
koma
1
19 August 2015
Shamir Secret Sharing - Introduction
1%
154
30
Vozec
1
5 February 2024
AES - 4 Rounds
1%
311
35
Cryptanalyse
0
5 September 2018
ECDSA - Introduction
1%
287
35
Jrmbt
2
22 September 2019
RSA - Padding
1%
268
35
Tosh
0
9 October 2016
RSA - Signature
1%
167
35
sar
1
9 March 2020
Shamir Secret Sharing - Traitor
1%
12
35
Vozec
0
5 February 2024
AES128 - CTR
1%
664
40
Tosh
2
28 August 2015
PHP - mt_rand
1%
133
40
NonStandardModel
0
28 March 2022
Discrete logarithm problem
1%
1184
40
RFC4949
3
8 June 2014
RSA - Corrupted key 2
1%
294
40
blackndoor
1
11 January 2018
RSA - Corrupted key 3
1%
172
40
blackndoor
0
5 September 2019
RSA - Multiple recipients
1%
1498
40
franb
4
29 November 2015
AES - Fault attack #1
1%
169
50
Cryptanalyse
1
20 September 2018
FEAL - Differential Cryptanalysis
1%
35
50
Tosh
0
28 March 2022
Enigma Machine
1%
245
50
peyman
2
12 October 2016
Side Channel - AES : CPA
1%
64
50
cb34
0
28 March 2022
ECDHE
1%
222
60
Tosh
2
20 November 2016
RSA - H-rabin
1%
56
60
Vozec
0
21 March 2023
RSA - Lee cooper
1%
137
60
blackndoor
,
Synacktiv
1
7 November 2019
Service - CBC Padding
1%
1272
60
koma
1
4 October 2012
Side Channel - AES : first round
1%
62
60
walafc0
0
28 March 2022
Polyalphabetic substitution - One Time Pad
1%
370
60
Thanat0s
0
2 June 2013
White-Box Cryptography
1%
218
60
Cryptanalyse
3
21 October 2018
AES - Weaker variant
1%
125
70
Cryptanalyse
1
29 August 2018
Shamir Secret Sharing - Reduction
1%
10
70
Vozec
0
5 February 2024
Hash - SHA-3
1%
148
75
Revenger
1
10 December 2016
AES - Fault attack #2
1%
123
80
Cryptanalyse
1
20 September 2018
Shamir Secret Sharing - Irreducible ?
1%
7
90
Mister7F
0
5 February 2024
AES-PMAC
1%
33
100
Cryptanalyse
0
26 May 2019
ECDSA - Implementation error
1%
52
100
Tosh
0
29 September 2019