Row Column Transposition Ciphering Technique

Network Security: Row Column Transposition Ciphering Technique
Topics discussed:
1) Introduction to transposition classical ciphering technique.
2) Difference between substitution cipher and transposition cipher.
3) Operation of Row Column transposition ciphering technique with an example.
4) Generation of ciphertext using Row Column transposition technique with an example.
5) Generation of ciphertext using more complex Row Column transposition technique with an example.

Music:
Axol x Alex Skrindo - You [NCS Release]

#NetworkSecurityByNeso #Cryptography #NetworkSecurity #RowColumnTransposition

[henriquearmani]

India is such a blessed country. I've learned more from indians than from people of my own country. Thanks (and congratulations) to you and your nation for being so willing to share your knowledge for free with the rest of the world through Youtube.

[DrJALAGHARI]

Thanks for sharing such useful information through your videos. Keep it up.

[Gotoheaven]

Thank you for this playlist it's really amazing and appreciate your work ❤️

[avdhutnula]

The easiest and perfect explanation on the topic!

[prasannayogesh]

in row and column transposition should the key used for encrypting should be same for the double encryption also or what? pls reply

[hamzaabdualqawi]

Plz dear teacher, can u give me the book that u explained from it

[the_wizard_exe]

buddy this piece of video has gone to cut to the chase, thank's a bunch !, neat

[perstry]

will there be a decryption explaination?

[rajeshprajapati]

03:45 Neso Instructors are really cool.

[tnvspraveen]

How to decrypt back to plaintext again

[hxjitxc]

03:20 how to find the number of rows and columns?

[ManoharReddy-plgr]

What about the spaces between the plain text?

[arpitadas]

Key will be given in our question or we have to make it randomly.?

[priyankasthavarmath]

How you can tell that third column is first and fourth column is second?

[donclint]

Please I don't understand how you generated the key...

[harshitrathi]

How to kill corona virus at 12 am tmrw ??

[cklee]

how about decryption of this technique?

[Loyvir]

### Detailed Decryption Steps:

1. **Setup**:
- Cipher text:
- Key: `4312567`
- Number of columns: 7 (from the key length)
- Number of rows: 4 (since the cipher text length is 28 and 28 / 7 = 4)

2. **Create Initial Blocks**:
- Break the cipher text into blocks of 4 characters each:
```
Block 1: TTNA
Block 2: APTM
Block 3: TSUO
Block 4: AODW
Block 5: COIX
Block 6: KNLY
Block 7: PETZ
```

3. **Arrange Blocks Based on Key**:
- Key `4312567` tells us the order in which the columns were originally placed.
- Column 1 (key 4): AODW
- Column 2 (key 3): TSUO
- Column 3 (key 1): TTNA
- Column 4 (key 2): APTM
- Column 5 (key 5): COIX
- Column 6 (key 6): KNLY
- Column 7 (key 7): PETZ

4. **Read the Matrix Row-wise**:
- Combine the characters row by row to reconstruct the original message:
- Row 1: A (from AODW), T (from TSUO), T (from TTNA), A (from APTM), C (from COIX), K (from KNLY), L (from PETZ) -> ATTACKP
- Row 2: O (from AODW), S (from TSUO), T (from TTNA), P (from APTM), O (from COIX), N (from KNLY), E (from PETZ) -> OSTPONE
- Row 3: D (from AODW), U (from TSUO), N (from TTNA), T (from APTM), I (from COIX), L (from KNLY), T (from PETZ) -> DUNTILT
- Row 4: W (from AODW), O (from TSUO), A (from TTNA), M (from APTM), X (from COIX), Y (from KNLY), Z (from PETZ) -> WOAMXYZ

5. **Combine the Rows**:
- Concatenate all rows to get the original message:
```
ATTACKPOSTPONEDUNTILTWOAMXYZ
```

### Final Decrypted Message:
The decrypted message is