Stego | Command line utility written in go to allow simple LSB | Computer Vision library

 by   EthanWelsh Go Version: Current License: No License

kandi X-RAY | Stego Summary

kandi X-RAY | Stego Summary

Stego is a Go library typically used in Artificial Intelligence, Computer Vision applications. Stego has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

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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            kandi-support Support

              Stego has a low active ecosystem.
              It has 11 star(s) with 1 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              Stego has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Stego is current.

            kandi-Quality Quality

              Stego has no bugs reported.

            kandi-Security Security

              Stego has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Stego does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              Stego releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed Stego and discovered the below as its top functions. This is intended to give you an instant insight into Stego implemented functionality, and help decide if they suit your requirements.
            • 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
            Get all kandi verified functions for this library.

            Stego Key Features

            No Key Features are available at this moment for Stego.

            Stego Examples and Code Snippets

            No Code Snippets are available at this moment for Stego.

            Community Discussions

            QUESTION

            Embed every bit of every pixel of the secret image into the cover image
            Asked 2021-Apr-16 at 12:59

            First, I read the cover image as greyscale image.

            ...

            ANSWER

            Answered 2021-Apr-16 at 09:13

            First of all, you have an error in embedding

            Source https://stackoverflow.com/questions/67091432

            QUESTION

            Matlab computing wrong values
            Asked 2020-Jul-22 at 23:41

            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 23:41

            In 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).

            Source https://stackoverflow.com/questions/63044076

            QUESTION

            cv::Exception at memory location while looping over cv::Mat object
            Asked 2019-Jul-24 at 05:18

            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 09:43

            You 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).

            Source https://stackoverflow.com/questions/47197834

            QUESTION

            Javascript function .show() not using HTML code - on Page Search
            Asked 2019-Mar-21 at 03:36

            I found some Javascript code that does exactly what I want it to do. It searches a page of

          • for text that you enter in a search box.

            However, It does not show (or use) the HTML markup that is within the text.

            ...
          • ANSWER

            Answered 2019-Mar-21 at 03:36

            QUESTION

            How to debug why a JSON document is not valid?
            Asked 2018-Dec-30 at 11:45
            {
              "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 11:45

            You can use any JSON validator including the online ones like: https://jsonlint.com/, to validate your JSON files. Your current JSON has two errors:

            1. "GiveToDino": True (at line 363), -> change True to true, if you want to use it as a boolean
            2. Rex (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.

            Source https://stackoverflow.com/questions/53976303

            QUESTION

            How can I add the Text under the icons without making them stacked?
            Asked 2018-Aug-27 at 19:34

            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 19:06

            Here'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

            Source https://stackoverflow.com/questions/52045171

            QUESTION

            Understanding image steganography by LSB substitution method
            Asked 2018-Apr-04 at 11:06

            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 11:04

            Your confusion stems from the fact that all 3 sources you're looking at talk about something different.

            Paper 2, section 5

            This 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,

            Source https://stackoverflow.com/questions/49638628

            QUESTION

            Hiding Divs On Click In Angular2
            Asked 2018-Mar-23 at 19:00

            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 18:39

            You 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.

            Source https://stackoverflow.com/questions/49456187

            QUESTION

            Python getopt not setting correct value
            Asked 2017-Jun-15 at 12:57

            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 12:52

            The 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.

            Source https://stackoverflow.com/questions/44567458

            QUESTION

            Opening an Image from a specific file?
            Asked 2017-May-05 at 17:10
            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 17:10

            The 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]

            Source https://stackoverflow.com/questions/43810107

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