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% 29743 5 g0uZ 3
pas_valide Squared 13% 22673 5 g0uZ 6
pas_valide Dot and next line 7% 11547 10 SQalp 1
pas_valide Steganomobile 10% 17529 10 Ryscrow 2
pas_valide Twitter Secret Messages 7% 11566 10 xblade 2
pas_valide Some noise 5% 9186 15 Hackira 3
pas_valide George and Alfred 8% 13503 15 g0uZ 1
pas_valide Poem from Space 1% 123 15 Cryptanalyse 0
pas_valide Yellow dots 2% 2113 15 LetMeR00t 3
pas_valide Audio stegano 4% 5824 20 stickmen 6
pas_valide We need to go deeper 3% 5465 20 whoaim 7
pas_valide Base Jumper 1% 773 25 pickle 2
pas_valide Hide and seek 1% 170 25 swap89 0
pas_valide PDF Object 2% 2041 25 eilco 6
pas_valide Angecryption 1% 361 30 pickle 1
pas_valide Kitty spy 1% 572 30 LetMeR00t 1
pas_valide LSB - Uncle Scrooge 1% 1107 30 koma 1
pas_valide Pixel Indicator Technique 1% 382 30 LetMeR00t 1
pas_valide Pixel Value Differencing 1% 298 30 LetMeR00t 1
pas_valide Crypt-art 3% 4462 35 m31z0nyx 2

Challenge Results Challenge Results

Pseudo Challenge Lang date
QJF   Hide and seek 10 August 2020 at 18:26
Noah   Points jaunes 10 August 2020 at 18:22
houdu_huliya   Squared 10 August 2020 at 18:08
houdu_huliya   Gunnm 10 August 2020 at 18:06
Noah   George et Alfred 10 August 2020 at 17:47
Noah   Steganomobile 10 August 2020 at 17:39
Noah   Gunnm 10 August 2020 at 17:10
John Russel   Base Jumper 10 August 2020 at 16:33
Arvialo   Points jaunes 10 August 2020 at 16:11
xploit3r   Crypt-art 10 August 2020 at 15:52