To get the ciphertext, execute this command:
wget https://samsclass.info/124/proj14/xorchal1-cipher --no-check-certificate
Decrypt the file. When you get it,
capture a whole-desktop image showing
the contents, which begin with
"Congratulations",
as shown below:
Save the image as "Proj 13xa from YOUR NAME".
To get the ciphertext, execute this command:
wget https://samsclass.info/124/proj14/xorchal2-cipher --no-check-certificate
Decrypt the file. When you get it,
capture a whole-desktop image showing
the contents, which begin with
"Congratulations",
as shown below:
Save the image as "Proj 13xb from YOUR NAME".
To get the ciphertext, execute this command:
wget https://samsclass.info/124/proj14/xorchal3-cipher --no-check-certificate
This is an image file. When decrypted,
it starts with a PNG file header, as
shown below:
Notice that the first 4 bytes are 89, 50, 4E, 47; the 2nd through 4th byte spell out PNG in ASCII.
Decrypt the file. When you get it, change its filename extension to PNG and open it in an image viewer or Web browser.
Capture a whole-desktop image showing the visible image.
Save the image as "Proj 13xc from YOUR NAME".
To get the ciphertext, execute this command:
wget https://samsclass.info/124/proj14/xorchal4-cipher --no-check-certificate
This is an image file. When decrypted,
it starts with a JPEG file header, as
shown below:
Notice that the first 2 bytes are FFD8, and some later bytes contain the ASCII characters JFIF.
Decrypt the file. When you get it, change its filename extension to JPG and open it in an image viewer or Web browser.
Capture a whole-desktop image showing the visible image.
Save the image as "Proj 13xd from YOUR NAME".