Question $6$: $(12$ Marks$)$ CO$3$ You are provided with a plaintext string formatted as follows: YourFullName$+$HomeDistrict$+$CSE$+$ULAB $($rabeyabosrigazipurcseulab$)$ For example, if someone's name is John Doe and their home district is Dhaka, the plaintext would be: johndoedhakacseulab. Note that the plaintext should only contain alphanumeric characters, so any special characters in the name must be excluded. Your task is to apply at least two substitution cipher techniques and at least two transposition cipher techniques to generate the corresponding ciphertext. After generating the ciphertext for each technique, analyze and compare their vulnerabilities from a cryptanalysis perspective. Finally, rank the techniques based on their efficiency and security, providing a detailed explanation for your ranking. For this question use two substitution cipher techniques $($Caesar Cipher shift key are $3,$Monoalphabetic Cipher order are $($a$-$z$)$ randomly select the alphabet for substitution are d$,$e$,$n$,$o$,$q$,$p$,$e$,$c$,$u$,$t$,$i$,$v$,$g$,$h$,$j$,$y$,$x$,$w$,$r$,$z$,$m$,$s$,$l$,$b$,$a$,$k and two transposition cipher techniques$($rail fence cipher,Columnar Transposition Cipher use $5$ columns order$=5,1,3,2,4)$