Stego | Command line utility written in go to allow simple LSB | Computer Vision library
kandi X-RAY | Stego Summary
kandi X-RAY | Stego Summary
Stego is a command line utility written in go to allow simple LSB steganography on PNG images. It is capable of both encoding and decoding images. It can store files of any format.
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Top functions reviewed by kandi - BETA
- main is the main function .
- decodeMessageFromPicture decodes a message from a PNG image
- encodeString encodes a string to a message
- Get next bit from byte array
- init initializes flags .
- encodePNG encodes an image to PNG .
- imageToRGBA converts a image . Image to an image . RGBA .
- setBit inByte
- decodeImage decodes an image
- getBitFromByte get bit from byte
Stego Key Features
Stego Examples and Code Snippets
Community Discussions
Trending Discussions on Stego
QUESTION
First, I read the cover image as greyscale image.
...ANSWER
Answered 2021-Apr-16 at 09:13First of all, you have an error in embedding
QUESTION
I am using MATLAB 2013a to implement the algorithm of this paper An improved method for high hiding capacity based on LSB and PVD
Figure 3.1 in the paper describes the embedding procedure, when reaching the 5th step of the right branch, MATLAB computes wrong values for the variables v1 and v2. Here is my code:
...ANSWER
Answered 2020-Jul-22 at 23:41In your debugging, notice that p0
is of type uint8
with value 64, that is, an unsigned 8-bit integer, while p_1
is a double
. When subtracting a double from a uint8
, the result will be a uint8
, which can't represent negative values. Matlab unsigned integers saturate so the result will be zero.
I'd recommend changing the type of p0
to a signed integer type (maybe just int8
is sufficient).
QUESTION
I create an empty matrix hide_image
with zero values.
Dimentions are right - 672x896. Each element should be filled with value, I do it in loop. But on (0, 299)
element code throw an exception:
ANSWER
Answered 2017-Nov-09 at 09:43You are using different types to initialize and loop through the matrix...
During initialization you use CV_8U
which is an 8 bit pixel representation (one channel).
QUESTION
I found some Javascript code that does exactly what I want it to do. It searches a page of
However, It does not show (or use) the HTML markup that is within the text.
...ANSWER
Answered 2019-Mar-21 at 03:36try this one
QUESTION
{
"General":{
"TimedPointsReward":{
"Enabled":true,
"Interval":5,
"Groups":{
"Default":{
"Amount":5
},
"Premiums":{
"Amount":15
}
}
},
"ItemsPerPage":15,
"ShopDisplayTime":15.0,
"ShopTextSize":1.3,
"DbPathOverride":"",
"DefaultKit":"House,starter"
},
"Kits":{
"starter":{
"DefaultAmount":2,
"Price":20,
"Description":"Starter Kit! (Raptor and Pteradon)",
"OnlyFromSpawn":false,
"Items":[
{
"Amount":1,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/Saddles/PrimalItemArmor_PteroSaddle.PrimalItemArmor_PteroSaddle'"
},
{
"Amount":1,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/Saddles/PrimalItemArmor_RaptorSaddle.PrimalItemArmor_RaptorSaddle'"
}
],
"Dinos":[
{
"Level":100,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Raptor/BionicRaptor_Character_BP.BionicRaptor_Character_BP'"
},
{
"Level":100,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Ptero/Ptero_Character_BP.Ptero_Character_BP'"
}
]
},
"House":{
"DefaultAmount":1,
"Price":100,
"Description":"House Kit! (Wood)",
"Items":[
{
"Amount":20,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodFloor.PrimalItemStructure_WoodFloor'"
},
{
"Amount":40,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodWall.PrimalItemStructure_WoodWall'"
},
{
"Amount":20,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodCeiling.PrimalItemStructure_WoodCeiling'"
},
{
"Amount":2,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodWallWithDoor.PrimalItemStructure_WoodWallWithDoor'"
},
{
"Amount":2,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Stone/PrimalItemStructure_StoneDoor.PrimalItemStructure_StoneDoor'"
}
]
},
"Survival":{
"DefaultAmount":3,
"Price":100,
"MinLevel":1,
"MaxLevel":20,
"Description":"Survival Kit(Sword, Pickaxe, and Hatchet",
"Items":[
{
"Amount":1,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Weapons/PrimalItem_WeaponSword.PrimalItem_WeaponSword'"
},
{
"Amount":1,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Weapons/PrimalItem_WeaponMetalPick.PrimalItem_WeaponMetalPick'"
},
{
"Amount":1,
"Quality":0,
"ForceBlueprint":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Weapons/PrimalItem_WeaponMetalHatchet.PrimalItem_WeaponMetalHatchet'"
}
]
}
},
"ShopItems":{
"ingots100":{
"Type":"item",
"Description":"Metal Ingot (100x)",
"Price":200,
"Items":[
{
"Quality":0,
"ForceBlueprint":false,
"Amount":100,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Resources/PrimalItemResource_MetalIngot.PrimalItemResource_MetalIngot'"
}
]
},
"DinoArea":{
"Type":"item",
"Description":"Area For Your Dinos!",
"Price":200,
"Items":[
{
"Quality":0,
"ForceBlueprint":false,
"Amount":6,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodGateframe.PrimalItemStructure_WoodGateframe'"
},
{
"Quality":0,
"ForceBlueprint":false,
"Amount":6,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Structures/Wooden/PrimalItemStructure_WoodGate.PrimalItemStructure_WoodGate'"
}
]
},
"Rock Drake":{
"Type":"dino",
"Description":"Gives a Tamed Rock Drake",
"Level":150,
"Price":2000,
"MinLevel":1,
"MaxLevel":150,
"Blueprint":"Blueprint'/Game/Aberration/Dinos/RockDrake/RockDrake_Character_BP.RockDrake_Character_BP'"
},
"Rex":{
"Type":"dino",
"Description":"Gives a Tamed Rex",
"Level":150,
"Price":1000,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Rex/Rex_Character_BP.Rex_Character_BP'"
},
"Achatina":{
"Type":"dino",
"Description":"Gives a Snail",
"Level":150,
"Price":100,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Achatina/Achatina_Character_BP.Achatina_Character_BP'"
},
"Allosaurus":{
"Type":"dino",
"Description":"Gives a Allosaurus",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Allosaurus/Allo_Character_BP.Allo_Character_BP'"
},
"Ankylosaurus":{
"Type":"dino",
"Description":"Gives a Ankylo",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Ankylo/Ankylo_Character_BP.Ankylo_Character_BP'"
},
"Argentavis":{
"Type":"dino",
"Description":"Gives a Argentavis",
"Level":150,
"Price":600,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Argentavis/Argent_Character_BP.Argent_Character_BP'"
},
"Araneo":{
"Type":"dino",
"Description":"Gives a Araneo",
"Level":150,
"Price":200,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Spider-Small/SpiderS_Character_BP.SpiderS_Character_BP'"
},
"Arthropluera":{
"Type":"dino",
"Description":"Gives a Arthropluera",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Arthropluera/Arthro_Character_BP.Arthro_Character_BP'"
},
"Baryonx":{
"Type":"dino",
"Description":"Gives a Baryonyx",
"Level":150,
"Price":200,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Baryonyx/Baryonyx_Character_BP.Baryonyx_Character_BP'"
},
"Castoroides":{
"Type":"dino",
"Description":"Gives a Beaver",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Beaver/Beaver_Character_BP.Beaver_Character_BP'"
},
"Daeodon":{
"Type":"dino",
"Description":"Gives a Pig",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Daeodon/Daeodon_Character_BP.Daeodon_Character_BP'"
},
"Diplodocus":{
"Type":"dino",
"Description":"Gives a Disappointment",
"Level":150,
"Price":100,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Diplodocus/Diplodocus_Character_BP.Diplodocus_Character_BP'"
},
"Doedicurus":{
"Type":"dino",
"Description":"Gives a Doedicurus",
"Level":150,
"Price":200,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Doedicurus/Doed_Character_BP.Doed_Character_BP'"
},
"Bronto":{
"Type":"dino",
"Description":"Gives a Bronto",
"Level":150,
"Price":800,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Sauropod/Sauropod_Character_BP.Sauropod_Character_BP'"
},
"Carnotaurus":{
"Type":"dino",
"Description":"Gives a Carno",
"Level":150,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Carno/Carno_Character_BP.Carno_Character_BP'"
},
"Bee":{
"Type":"dino",
"Description":"Gives a Giant Bee",
"Level":150,
"Price":400,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Bee/Bee_Character_BP.Bee_Character_BP'"
},
"Giganotosaurus":{
"Type":"dino",
"Description":"Gives a Giga",
"Level":150,
"Price":1500,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Giganotosaurus/Gigant_Character_BP.Gigant_Character_BP'"
},
"Pteranodon":{
"Type":"dino",
"Description":"Gives a Pteranodon",
"Level":150,
"Price":100,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Ptero/Ptero_Character_BP.Ptero_Character_BP'"
},
"Quetzal":{
"Type":"dino",
"Description":"Gives a Quetzale",
"Level":150,
"Price":800,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Quetzalcoatlus/Quetz_Character_BP.Quetz_Character_BP'"
},
"Rex":{
"Type":"dino",
"Description":"Gives a T-Rex",
"Level":150,
"Price":1000,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Rex/Rex_Character_BP.Rex_Character_BP'"
},
"Spinosaurus":{
"Type":"dino",
"Description":"Gives a Spino",
"Level":150,
"Price":500,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Spino/Spino_Character_BP.Spino_Character_BP'"
},
"Stegosaurus":{
"Type":"dino",
"Description":"Gives a Stego",
"Level":150,
"Price":100,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Stego/Stego_Character_BP.Stego_Character_BP'"
},
"Tapejara":{
"Type":"dino",
"Description":"Gives a Tapejara",
"Level":150,
"Price":400,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Tapejara/Tapejara_Character_BP.Tapejara_Character_BP'"
},
"Therizinosaur":{
"Type":"dino",
"Description":"Gives a Therizinosaur",
"Level":150,
"Price":500,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Therizinosaurus/Therizino_Character_BP.Therizino_Character_BP'"
},
"Titanosaur":{
"Type":"dino",
"Description":"Gives a Titanosaur",
"Level":10,
"Price":5000,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Titanosaur/Titanosaur_Character_BP.Titanosaur_Character_BP'"
},
"Yutyrannus":{
"Type":"dino",
"Description":"Gives a Yutyrannus",
"Level":150,
"Price":1000,
"Neutered":false,
"Blueprint":"Blueprint'/Game/PrimalEarth/Dinos/Yutyrannus/Yutyrannus_Character_BP.Yutyrannus_Character_BP'"
},
"Phoenix":{
"Type":"dino",
"Description":"Gives a Phoenix",
"Level":100,
"Price":300,
"Neutered":false,
"Blueprint":"Blueprint'/Game/ScorchedEarth/Dinos/Phoenix/Phoenix_Character_BP.Phoenix_Character_BP'"
},
"exp1000":{
"Type":"experience",
"Description":"1000 points of experience and works on dinos",
"GiveToDino":True,
"Price":50,
"Amount":1000.0
},
"tekengram":{
"Type":"unlockengram",
"Description":"Engram TEK Boots & Gloves",
"Price":20,
"Items":[
{
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/TEK/PrimalItemArmor_TekBoots.PrimalItemArmor_TekBoots'"
},
{
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Items/Armor/TEK/PrimalItemArmor_TekGloves.PrimalItemArmor_TekGloves'"
}
]
},
"allengrams":{
"Type":"command",
"Description":"All engrams",
"Price":2000,
"Items":[
{
"Command":"GiveEngrams"
}
]
}
},
"SellItems":{
"metal":{
"Type":"item",
"Description":"100x metal",
"Price":10,
"Amount":50,
"Blueprint":"Blueprint'/Game/PrimalEarth/CoreBlueprints/Resources/PrimalItemResource_Metal.PrimalItemResource_Metal'"
}
},
"Messages":{
"Sender":"ArkShop",
"BoughtItem":"You have successfully bought item",
"BoughtDino":"You have successfully bought dino",
"BoughtBeacon":"You have successfully bought beacon",
"BoughtExp":"You have successfully bought experience",
"ReceivedPoints":"You have received {0} points! (total: {1})",
"HavePoints":"You have {0} points",
"NoPoints":"You don't have enough points",
"WrongId":"Wrong id",
"NoPermissionsKit":"You don't have permission to use this kit",
"CantBuyKit":"You can't buy this kit",
"BoughtKit":"You have successfully bought {0} kit",
"AvailableKits":"Available kits for you:",
"NoKits":"No available kits",
"KitsLeft":"You have {0} {1} kits left",
"NoKitsLeft":"You don't have {0} kits left",
"CantGivePoints":"You can't give points to yourself",
"RidingDino":"You can't buy this item while riding a dino",
"SentPoints":"You have successfully sent {0} points to {1}",
"GotPoints":"You have received {0} points from {1}",
"NoPlayer":"Player doesn't exist",
"FoundMorePlayers":"Found more than one player with the given name",
"BuyUsage":"Usage: /buy id amount",
"ShopUsage":"Usage: /shop page",
"KitUsage":"Usage: /kit KitName",
"BuyKitUsage":"Usage: /BuyKit KitName amount",
"TradeUsage":"Usage: /trade 'Player Name' amount",
"PointsCmd":"/points",
"TradeCmd":"/trade",
"BuyCmd":"/buy",
"ShopCmd":"/shop",
"KitCmd":"/kit",
"BuyKitCmd":"/buykit",
"SellCmd":"/sell",
"ShopSellCmd":"/shopsell",
"SellUsage":"Usage: /sell id amount",
"NotEnoughItems":"You don't have enough items ({0}/{1})",
"SoldItems":"You have successfully sold items",
"BadLevel":"Required level: {0} - {1}",
"KitsListPrice":"Price: {0}",
"KitsListFormat":"\"{0}\" - {1}. {2} left. {3}\n",
"StoreListDino":"{0}) {1}. Level: {2}. Id: {3}. Price: {4}\n",
"StoreListItem":"{0}) {1}. Id: {2}. Price: {3}\n",
"StoreListFormat":"{0}",
"OnlyOnSpawnKit":"This kit can be used only on spawn"
}
}
...ANSWER
Answered 2018-Dec-30 at 11:45You can use any JSON validator including the online ones like: https://jsonlint.com/, to validate your JSON files. Your current JSON has two errors:
"GiveToDino": True
(at line 363), -> changeTrue
totrue
, if you want to use it as a booleanRex
(at lines 152 and 296) is a duplicated key. You should change one of those keys to something else.
If you fix these two errors in your current version you'll have a valid JSON.
QUESTION
I just can't wrap my head around having text under icons. But I need the setup of the Icons left to right.
...ANSWER
Answered 2018-Aug-27 at 19:06Here's a working codepen showing you how I did it.
https://codepen.io/wearetamo/pen/mGPgxV
Basically what I did on the HTML was create a row an columns
QUESTION
I am having a very hard time in understanding the LSB based steganography method given in Section 2. The examples in the internet are very confusing and unclear. I am following the Matlab implementation https://www.mathworks.com/matlabcentral/fileexchange/41326-steganography-using-lsb-substitution and the paper titled, "A SURVEY ON IMAGE STEGANOGRAPHY USING LSB SUBSTITUTION TECHNIQUE " download link (https://irjet.net/archives/V4/i5/IRJET-V4I566.pdf)
Section 5 of this paper gives an example of the LSB based method. Suppose, P1 = [10011011], P2 = [01101010], P3 = [11001100]
are the 3 bytes of the cover image into which the message M = [011]
is to be embedded. The result of the embedding is P1 = [10011010], P2 = [01101011],
P3 = [11001101]
.
I am clueless how this answer comes. Can somebody please help in giving the steps/working example to clear the concept?
Based on my understanding of the Matlab code,
Stego = uint8(round(bitor(bitand(x, bitcmp(2^n - 1, 8)) , bitshift(y, n - 8))));
if n
is the number of bits to be substituted, then the group of n
bits are replaced by doing a complement/ comparison of the group of n
bits of the cover image (x
variable) with the n
bits of the message (y
variable). If the bits are same, then no replacement, else the bits are swapped. I dont't know if my understanding is correct or not.
ANSWER
Answered 2018-Apr-04 at 11:04Your confusion stems from the fact that all 3 sources you're looking at talk about something different.
Paper 2, section 5This describes the most basic form of LSB pixel substitution steganography. Each pixel is described by 8 bits. For each pixel we clear out the LSB and substitute it with one bit of the secret message. For example,
QUESTION
I am fairly new to Angular2.I have an app that has a search field, that allows a user to search for a painting of mine. When a match is found a preview div appears and upon clicking that div, a bigger div is displayed, with info about the painting.When the user is done looking at that and wants to search for another, I want them to be able to make it go away by clicking it.Right now, I have figured out how to get the div to do disappear when the user clicks on it. But if the user searches for a new painting, when they click on the preview div, the bigger div doesn't display.I think it probably has something to do with the state of the application at that point, but I'm not 100% sure since I'm new to Angular2, and this is why I'm turning to you for assistance. You can test the behavior I have described above at this link: https://mazzo-angular-app.herokuapp.com
Thanks hope you can help, CMazz
painting-details.component.ts
...ANSWER
Answered 2018-Mar-23 at 18:39You are setting isHidden to false on click in PaintingDetailsComponent and never resetting it. I am guessing that you are also setting currentPainting and not clearing that, which means your PaintingDetailsComponent never gets re-initialized. I would fire an event using EventEmitter in your onclick that resets the currentPainting in your search component.
QUESTION
It could be I'm completely misunderstanding the getopt module
I am trying to parse [--magic-m] to my program, but it does not set the correct field.
Part of Encrypt Function
...ANSWER
Answered 2017-Jun-15 at 12:52The colon should come after m
to indicate that it requires an argument. You should also include an equals sign after the long option magic
to indicate that it requires an argument.
QUESTION
import glob
import numpy as np
from PIL import Image
filename = glob.glob('/home/ns3/PycharmProjects/untitled1/stego.pgm')
im= Image.open(filename)
(x,y) = im.size
I = np.array(im.getdata()).reshape(y, x)
...ANSWER
Answered 2017-May-05 at 17:10The issue is that glob.glob() returns a list (a possibly-empty list of path names that match pathname) and you want a string.
so either insert a [0]
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