9.1.4 Secret Image Steganography Answers -new ((install)) [ 95% Proven ]

The most common technique used in this lab is Least Significant Bit (LSB) substitution. Digital images are made of pixels, and each pixel is represented by bits (usually 8 bits per color channel: Red, Green, and Blue).

from stegano import lsb

Step 3: Analyzing the ResultCompare the original image and the stego-image side-by-side. 9.1.4 Secret Image Steganography Answers -NEW

What is the primary limitation of LSB steganography in lossy image formats like JPEG? A: JPEG compression quantizes DCT coefficients, which destroys the LSB data during saving.

From stego_result.png , extract the embedded logo.png . The most common technique used in this lab

Alternatively, some versions hide 1 bit per channel by zeroing out LSB of cover and OR-ing with 1 bit of secret.

If you need to perform the lab and not just answer multiple-choice questions, follow this updated procedure: What is the primary limitation of LSB steganography

When you convert 01000011 from binary to text using an ASCII table, it corresponds to the uppercase letter .

stegdetect or StegExpose

By repeating this process across the width of the image, the computer assembles the string of characters:

In the lab’s "Image Differencing" task, what tool shows the exact bits changed between carrier and stego image? A: compare (from ImageMagick) with the -highlight-color option.