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.

Challenges associated with this section 17 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Gunnm 16% 20316 5 g0uZ 1
pas_valide Squared 12% 15542 5 g0uZ 4
pas_valide Dot and next line 6% 7152 10 SQalp 1
pas_valide Steganomobile 10% 12010 10 Ryscrow 2
pas_valide Twitter Secret Messages 6% 7345 10 xblade 1
pas_valide Some noise 6% 6552 15 Hackira 2
pas_valide George and Alfred 8% 9814 15 g0uZ 1
pas_valide Audio stegano 4% 4036 25 stickmen 6
pas_valide Base Jumper 1% 421 25 pickle 1
pas_valide PDF Object 2% 1396 25 eilco 4
pas_valide We need to go deeper 4% 4006 25 whoaim 7
pas_valide Angecryption 1% 224 30 pickle 1
pas_valide Kitty spy 1% 299 30 LetMeR00t 0
pas_valide LSB - Uncle Scrooge 1% 807 30 koma 1
pas_valide Pixel Indicator Technique 1% 208 30 LetMeR00t 1
pas_valide Pixel Value Differencing 1% 119 30 LetMeR00t 1
pas_valide Crypt-art 3% 3242 35 m31z0nyx 2

Challenge Results Challenge Results

Pseudo Challenge Lang date
Z3ayard   Audio stégano fr 24 April 2019 at 01:10
valentinbreiz   Twitter Secret Messages fr 24 April 2019 at 00:47
valentinbreiz   Point à la ligne fr 24 April 2019 at 00:43
valentinbreiz   Pas très carré fr 24 April 2019 at 00:41
valentinbreiz   Gunnm fr 24 April 2019 at 00:39
Z3ayard   Du bruit fr 24 April 2019 at 00:38
molivier   Base Jumper fr 24 April 2019 at 00:24
0f38_xa   Gunnm fr 24 April 2019 at 00:09
Samuel   Pas très carré fr 23 April 2019 at 23:59
Samuel   Gunnm fr 23 April 2019 at 23:58