EEL 4789 Ethical Hacking and Countermeasures Name: ID: You ae given the following phrase "Stop Now" and you have 100x 100 pixel image where each pixe is represented as an 8 bit gray-scale quantity. With these pixels below, show as much as you can hide of the phrase, given that the LSB will be used to hide the letters. (see last page for ASCII Table) Pixel 1 0000 1111 Pixel 2 0000 1101 Pixel 300001000 0000 1110 Pixel 5 0000 1101 Pixel 6 0000 1111 Pixel 7 0000 1111 Pixel 8 0000 1100 Pixel 4 Pixel 9> Pixel 100000 0010 Pixel II 0000 1010 Pixel 12 0000 1000 Pixel 13- 0000 0001 Pixel 14 0000 1100 Pixel 15 0000 1111 Pixel 16> 0000 1001 How many pixels were affected: What percentage of the pixel-bits were affected: How many bits in total do you have to hide What is the maximum percentage of the potentially affected pixels-bits:

EEL 4789 Ethical Hacking and Countermeasures Name: ID: You ae given the following phrase "Stop Now" and you have 100x 100 pixel image where each pixe is represented as an 8 bit gray-scale quantity. With these pixels below, show as much as you can hide of the phrase, given that the LSB will be used to hide the letters. (see last page for ASCII Table) Pixel 1 0000 1111 Pixel 2 0000 1101 Pixel 300001000 0000 1110 Pixel 5 0000 1101 Pixel 6 0000 1111 Pixel 7 0000 1111 Pixel 8 0000 1100 Pixel 4 Pixel 9> Pixel 100000 0010 Pixel II 0000 1010 Pixel 12 0000 1000 Pixel 13- 0000 0001 Pixel 14 0000 1100 Pixel 15 0000 1111 Pixel 16> 0000 1001 How many pixels were affected: What percentage of the pixel-bits were affected: How many bits in total do you have to hide What is the maximum percentage of the potentially affected pixels-bits: EEL 4789 Ethical Hacking and Countermeasures Name: ID: You ae given the following phrase "Stop Now" and you have 100x 100 pixel image where each pixe is represented as an 8 bit gray-scale quantity. With these pixels below, show as much as you can hide of the phrase, given that the LSB will be used to hide the letters. (see last page for ASCII Table) Pixel 1 0000 1111 Pixel 2 0000 1101 Pixel 300001000 0000 1110 Pixel 5 0000 1101 Pixel 6 0000 1111 Pixel 7 0000 1111 Pixel 8 0000 1100 Pixel 4 Pixel 9> Pixel 100000 0010 Pixel II 0000 1010 Pixel 12 0000 1000 Pixel 13- 0000 0001 Pixel 14 0000 1100 Pixel 15 0000 1111 Pixel 16> 0000 1001 How many pixels were affected: What percentage of the pixel-bits were affected: How many bits in total do you have to hide What is the maximum percentage of the potentially affected pixels-bits