#steganography

[oncethrown]

Steganography Cut

"Okay," Ron sighed. "I'm just going to say it. I'm not convinced about Percy."

"Convinced?" Bill asked. "What the fuck does that mean?"

"He shows up at the 11th hour saying he knows Aberforth— "

"He was in danger," Charlie cut in. "They were arresting dissenters, and he didn't have anywhere to go, what did you want him to do?"

"Saying he knows Aberforth," Ron continues. "Mum let him bring Oliver Wood back to the burrow with him for some reason, and now they've been holed up together since the end of the battle. I didn't even realize they knew each other."

Hermione opens her mouth to speak, but Bill raises a hand to cut her off. "No. We're not going to do this. The war is over. We're not digging out spies and detractors any more. Percy is back now. None of of us know what he's been through, he was there when Fred," Bill stumbles over his brother's name and the temperature around the table drops several degrees. He clears his throat. "He was there when Fred died. People grieve in their own ways and shit like this- Ronald- is not making easier for him to be with us instead of 'holed up with Oliver,'" Bill huffed. "Besides, according to Oliver, Percy has been working against the ministry for years. Oliver says he saved a ton of people and he knows where all the bodies are buried "

"When did you even get a chance to talk to Oliver? When did you get him away from Percy? What are they always doing up there?" Ron jabs his finger toward the house, encompassing the window to the twins old room, where Percy and Oliver have spent the majority of the last few days, only surfacing to sit silently through meals or walk out to the old paddock in the evenings and come back red eyed and loose limbed. 

"I think they are just boyfriends," Fleur says with a shrug. Everyone around the table stills so much they may have turned to stone. She looks around at all of them, then to Bill. "Is this not the word? Ills sont les petit amis, non? Les copains?" She looks around at the assembled Weasley's, Hermione and Harry. "Lovers. What did I say? What does 'boyfriends' mean?"

"Lovers?" Ginny repeats, horrified. 

Charlie and Bill exchange a look. Charlie shakes his head. "Oliver can't be… surely. He's a professional Quidditch player."

"Oui," Fleur insists. "Bill, when you were attacked- Percy came to see you after Dumbly-dorrs funeral. You were not awake, of course. We talked a little, and I left him to sit with you. 'e was so sad, I thought I would bring him something, a tea. When I came back, Oliver was there, and they were in a…" She looks up at the sunset kissed sky, around the table, then back to Bill "ils se tenaient l'un l'autre. Romantique."

"I understood romantic," Harry said. "What did she say?"

"She said they were holding each other." 

"And you're just bringing this up now?" Ginny demands.

Fleur straightened. "I 'ave barely spoken to Percy! I do not know Oliver! I am supposed to know this is a surprise?"

The back door creaks open and they all freeze again as Percy and Oliver step out into the garden. Hermione lets out a peel of fake laughter, realizes its the first laugh there has been in the house since the battle and turns it into a cough. Percy and Oliver exchange a look and walk self consciously toward the table. Percy executes an awkward wave. Oliver seems to be hiding something behind his back.

"Hey,' Percy says. "Everyone. What's up out here?"

"Just a nice night," Bill says. "Hard to be in the house, and…"

"You're welcome to join us," Charlie says. "If you weren't… doing something else."

Oliver looks at Percy and shrugs. "Uh, no. We were just going to get some fresh air and uh," he pulls a bottle of wine from behind his back. "Alcohol. But… we can.." He looks at Percy again and sets the bottle on the table "Break out the old refillable charm and split it, uh. Nine ways."

"Ginny's underage," Charlie says.

"No I'm not," Ginny argues. 

"Yeah. Yes," Bill says, standing and pulling his wand out. "Stay. Come talk with us." He waves his wand and everyone is so busy watching him conjure a chair that they miss the back door opening again. 

"What's everyone up to out here?"

In a night of stops and starts, they have still not frozen like this. Slowly, they all turn to George. 

He swallows deeply, looks back at all of them, and lets a slow, hesitant smile roll over his face. "You all look like you've seen a ghost." 

No one laughs. No one moves. 

George nods. He leans over, grabs the wine bottle off the table. "Percy, can we talk?"

"Uh… of course. Yes." Percy says. George nods again and starts to walk away. Percy rocks strangely on the spot, as though cutting off a movement, touches Oliver's back, and scurries after George. 

Oliver watches them go, then settles himself down into one of the vacant chairs. 

They stare at each other in silence for a moment. 

"I will go get some more alcohol," Charlie volunteers. 

"Yes, god, yes, please do that,"Bill agrees. 

[cant-think-of-a-good-one]

[sidui]

I’ve had a thought rattling around in my head lately that I’m becoming increasingly obsessed with. This may be complete nonsense but I lack the mathematical expertise to say.

I was reading about steganography, and I started thinking about whether it’d be possible to take a text representation of an image file, then overlay the information subtly on the image itself. So when the “recipient” decodes the embedded data, they’re left with the original image. This I can at least test, so I plan to start here. I’m imagining some kind of compression will be necessary, but maybe I’m wrong.

But my real question is whether it’s possible to do the same thing, except in a such a way that when the recipient decodes the data, they’re left with a functional version of the image they started with, steganography included. While I feel like it’s probably possible to at least ensure the steganography can reproduce itself, I don’t know if it’s possible to reproduce both it and the image continuously without progressive degradation of one or the other with each loop.

‘Cause like, what text/data do you encode??? If you try to do it iteratively, starting with the original image, the chain of pseudo-self reproducing images just stops at whatever point you stopped manually iterating through the encoding loop.

So, even if it’s not totally impossible for such an image to exist, how then could it be created/discovered?

I am surely losing my mind.

[cleasbycode]

Hidden warrior.

[sedehaven]

Thigh

silk slit TO hip, slides like curtains over flesh Unkissed by sunlight

garter plays Coy, peeping behind scarlet skirt, Hide and seek, black lace

stockings, Mandalas, a net for wayward Eyes

[alan-p-49]

since base64 is used in like args and stuff like that to hide messages, is it more steganography because everyone can recognize it as base64 or is it still encryption because you're "scrambling" it?

[wtftech]

Esteganografía

La esteganografía es una técnica que se utiliza para ocultar información dentro de otros archivos o medios de comunicación, de manera que el contenido oculto no sea detectado fácilmente. El objetivo de la esteganografía es mantener la comunicación o el intercambio de información en secreto, disimulando su existencia.

La esteganografía se basa en la premisa de que es más difícil proteger lo que no se ve que lo que se ve. Se utiliza para ocultar datos confidenciales, como mensajes secretos, archivos, imágenes o incluso archivos comprimidos dentro de otros archivos aparentemente inocentes, como imágenes, audio, video o documentos de texto. Estos archivos se conocen como archivos de cubierta o archivos portadores.

Existen varios métodos para llevar a cabo la esteganografía, algunos de los cuales incluyen:

Esteganografía en imágenes: Se oculta información dentro de los píxeles de una imagen sin alterar significativamente su apariencia visual. Los métodos más comunes incluyen la modificación del bit menos significativo (LSB) de cada píxel para almacenar datos ocultos.

Esteganografía en audio: Se ocultan datos dentro de archivos de audio modificando ligeramente la amplitud o la fase de las ondas de sonido.

Esteganografía en video: Se oculta información en archivos de video mediante la inserción de datos en los cuadros de video.

Esteganografía en texto: Se ocultan mensajes dentro de un texto aparentemente normal, utilizando técnicas como la modificación de espacios en blanco, cambios sutiles en la fuente o la codificación de palabras clave.

Es importante destacar que la esteganografía no proporciona encriptación ni seguridad por sí misma. Solo oculta la existencia de información confidencial, pero no protege los datos ocultos de ser descubiertos si se sospecha de su existencia. La esteganografía se utiliza en combinación con técnicas de cifrado para proporcionar un mayor nivel de seguridad en la comunicación encubierta.

El siguiente es un ejemplo practico de esteganografia con STEGO:

Instalar STEGO

Corrier el Setup.py install

Usar el comando stegolsb wavsteg –help

Crear el archivo iicybersecurity.txt

Correr el comando: stegolsb wavsteg -h -i sample01.wav -s /home/santiagopinedo/Descargas/Steganography/stego_lsb/iicybersecurity.txt -o /home/santiagopinedo/Descargas/Steganography/sound.wav

Recuperar los datos de un archivo WAV

Enlazar archivos .zip a una imagen

Se puede notar que el tamaño de la imagen aumento un poco:

Recuperando el archivo .ZIP de la imagen

Como se puede ver el archivo salida.zip contiene el archivo de texto en su interior y este mismo conserva la información sin haber sido modificada.

[eye-the-fly]

Embroidered hitomezashi steganography

[oncethrown]

Steganography Cut

Since the basic outline of steganography is written so far out I sometimes write little scenes for way out in the story.

But because the outline for Steganography is extremely lose, some of those scenes are going to get cut before they even get added, so I'm just posting them as they fall out of the outline.

**

"Percy…" Bill sighed. "Look, If you want to ditch Penny because she's a half blood, then yes, I will drop kick you, but I think I know you better than that."

"It's not because she's half blood," Percy sighed, nudged his toe into a crack in the sidewalk and stopped when he realized how young it made him look. " It's just... I went to a big, old fashioned country ball over Christmas, and… these girls, with money, and manors and stables and everything we could never dream of— they just want a pureblood husband. Even a Weasley is good enough. And Penny… is amazing, and we have fun together, and she… she *gets* some of the worst parts of me, but she also… I want her in my life, but I don't think we bring out the best in each other."

Bill let him sit in his silence, and even though Percy recognized it for what it was, a tactic to get him to feel that he had to fill the silence, he went on. "And the way Mum and Dad insist that they were perfect for each other, madly in love, and got married right out of Hogwarts because they were the other half of eachother's-"

"Percy— Mum and Dad didn't get married because they had a perfect love story."

"I know, the war—"

"Percy— when is my birthday?"

"January."

"Uh huh. And Mum and Dad got married two weeks out of school, right? In June?"

"Yeah, dad started at the ministry the day after the honeymoon."

"Do the math, Percy. Mum and Dad didn't get married because they were so in love it hurt. They got married because Mum was two months pregnant when they left Hogwarts." Bill stuck a thumb at himself. "I have proof. So you don't have to feel like you and Penelope are pre-ordained perfect lovers forever to be together."

Percy did the math, realized Bill had to be right and screwed up his courage to say the next part. "Thats… not what I meant. Kind of… the opposite."

"The opposite of being in love?"

"No. There's someone else. Someone… who…" Percy paused, and worked the conversation out a few steps ahead. There wasn't a version where he didn't have to admit to Bill who it was. "Nevermind. I'm being silly. Silly and overdramatic."

"Yeah. You do that… Percy are you in love?"

"I didn't say that."

"I think you nearly did. She's not French is she? Cause that's not going well with the family and you probably don't need to make reconciling any harder."

"Scottish," Percy admitted. 

"That's not so bad," Bill grinned. "Muggle?"

"No."

"Redhead?"

"Brunette."

"So… the problem here is that you don't want to be in love because mum and dad said they were in love?"

"No, of course not. This... this someone else. it's almost perfect. Perfect like I didn't really believe things could be," Percy sighs. "Being in love with them is like breathing."

"Then what on earth is the problem, Percy?"

Percy looked at his older brother, unflappable, effortlessly cool at all times. Apparently about to bring a part Veela French girl home to their mother. Part of an anti government insurgency from an institution adjacent to the government. 

"The problem is it's Oliver Wood."

Bill almost managed to hide his shock. "You don't mean like mates, do you?"

"No, I mean like we live together and we had sex this morning,"

"Oh."

"Worse than being French, do you think?"

Bill struggled to speak for a moment. "Well. Certainly not better."

[davidbombal]

Hide secret messages and files in music and photos

The Mr Robot Series continues with OTW: https://youtu.be/yq9zo6IzP64

[tomthefanboy]

Why stop there?

[simplyforensic]

A Comprehensive Guide to Anti-Forensics

Introduction to Anti-Forensics: The Art of Digital Concealment In the high-stakes realm of cybersecurity, a perpetual cat-and-mouse game unfolds between attackers and defenders. As digital forensics techniques continue to evolve, malicious actors have devised a formidable arsenal of anti-forensics strategies to evade detection and obscure their nefarious activities. This intricate tapestry of…

[arconinternet]

I Dream of Game Genies and ZIP Files - Hacking the NES (Video, Vi Grey, 2018)

Weird experimental NES ROM hacking. The ROM isn't in a ZIP - it's vice versa. You can watch it here - or if it doesn't work, here, or on YouTube here.

[roseverdict]

tinkering with steganography again for the first time in a while and i think the encryption does NOT like playing nice with #FFFFFF pixels lmao