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.

 20 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Gunnm 16% 31168 5 g0uZ 3
pas_valide Squared 13% 23770 5 g0uZ 6
pas_valide Dot and next line 7% 12235 10 SQalp 1
pas_valide Steganomobile 10% 18374 10 Ryscrow 2
pas_valide Twitter Secret Messages 7% 12252 10 xblade 2
pas_valide Some noise 5% 9619 15 Hackira 3
pas_valide George and Alfred 8% 13966 15 g0uZ 1
pas_valide Poem from Space 1% 293 15 Cryptanalyse 0
pas_valide Yellow dots 2% 2339 15 LetMeR00t 3
pas_valide Audio stegano 4% 6075 20 stickmen 6
pas_valide We need to go deeper 3% 5676 20 whoaim 7
pas_valide Base Jumper 1% 807 25 pickle 2
pas_valide Hide and seek 1% 186 25 swap89 0
pas_valide PDF Object 2% 2133 25 eilco 6
pas_valide Angecryption 1% 374 30 pickle 1
pas_valide Kitty spy 1% 609 30 LetMeR00t 1
pas_valide LSB - Uncle Scrooge 1% 1145 30 koma 1
pas_valide Pixel Indicator Technique 1% 410 30 LetMeR00t 1
pas_valide Pixel Value Differencing 1% 327 30 LetMeR00t 1
pas_valide Crypt-art 3% 4636 35 m31z0nyx 2

Challenge Results Challenge Results

Pseudo Challenge Lang date
Sacresombre   Points jaunes 24 October 2020 at 04:10
Sacresombre   George et Alfred 24 October 2020 at 02:49
Cl_Milo   Audio stegano 24 October 2020 at 02:49
Sacresombre   Twitter Secret Messages 24 October 2020 at 02:41
Sacresombre   Steganomobile 24 October 2020 at 02:37
Sacresombre   Point à la ligne 24 October 2020 at 02:31
Sacresombre   Pas très carré 24 October 2020 at 02:09
dante   Some noise 24 October 2020 at 01:34
Sacresombre   Gunnm 24 October 2020 at 01:30
dante   Twitter Secret Messages 24 October 2020 at 01:22