Steganography

Whereas cryptography concern the art of secret, steganography is the art of hidding: the object of steganography is to hide the fact that there is an information in a document.

 19 Challenges

Results Name ↓↑ Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Angecryption 1% 320 30 pickle 1
pas_valide Audio stegano 4% 5219 20 stickmen 6
pas_valide Base Jumper 1% 647 25 pickle 2
pas_valide Crypt-art 3% 4054 35 m31z0nyx 2
pas_valide Dot and next line 6% 10143 10 SQalp 1
pas_valide George and Alfred 8% 12412 15 g0uZ 1
pas_valide Gunnm 16% 26880 5 g0uZ 3
pas_valide Hide and seek 1% 122 25 swap89 0
pas_valide Kitty spy 1% 486 30 LetMeR00t 1
pas_valide LSB - Uncle Scrooge 1% 1020 30 koma 1
pas_valide PDF Object 2% 1859 25 eilco 6
pas_valide Pixel Indicator Technique 1% 321 30 LetMeR00t 1
pas_valide Pixel Value Differencing 1% 237 30 LetMeR00t 1
pas_valide Some noise 5% 8302 15 Hackira 3
pas_valide Squared 12% 20467 5 g0uZ 6
pas_valide Steganomobile 10% 15860 10 Ryscrow 2
pas_valide Twitter Secret Messages 6% 10191 10 xblade 2
pas_valide We need to go deeper 3% 4924 20 whoaim 7
pas_valide Yellow dots 1% 1410 15 LetMeR00t 3

Challenge Results Challenge Results

Pseudo Challenge Lang date
NoCrash   Pas très carré 28 February 2020 at 01:29
Sam0x90   Point à la ligne 28 February 2020 at 01:00
Sam0x90   Pas très carré 28 February 2020 at 00:59
dl3d   Pas très carré 28 February 2020 at 00:43
ocjeam   Gunnm 28 February 2020 at 00:09
dl3d   Gunnm 28 February 2020 at 00:05
jérémie Bartholomeüs   Crypt-art 28 February 2020 at 00:00
mogwai   We need to go deeper 27 February 2020 at 23:58
oumaima3   Steganomobile 27 February 2020 at 23:48
MusicLegend98   Points jaunes 27 February 2020 at 23:45