Prompt
Answer
Pseudocode for Decoding Using Ubchi Decipher Method
Algorithm Declaration
Algorithm DecodeUbchi(key, encoded_text)
Comments
// This algorithm decodes a given encoded text using the Ubchi decipher method. // Inputs: // - key: the cipher key used for decoding, a string // - encoded_text: the encoded message to be decoded, a string // Outputs: // - decoded_text: a string, the result of the decoding process
Parameters
key ← "Cipher" encoded_text ← "notti vgfstrermasee eaien ur o peuitrnoa msz veadstI" decoded_text ← ""
Decoding Process
// Prepare the key for decoding key_length ← length of key text_length ← length of encoded_text repeat_length ← text_length / key_length repeated_key ← repeat key for repeat_length times
// Iterate over each character in the encoded text for index from 0 to text_length - 1 do // Get current character from encoded text current_char ← encoded_text[index]
// Get the corresponding key character
key_char ← repeated_key[index]
// Calculate the shift based on the key character
shift_value ← ASCII value of key_char - ASCII value of 'A' // as key assumes uppercase letters
// Decode the character by shifting back
if current_char is an uppercase letter then
decoded_char ← (ASCII value of current_char - shift_value)
if decoded_char < ASCII value of 'A' then
decoded_char ← decoded_char + 26 // wrap around if below 'A'
else if current_char is a lowercase letter then
decoded_char ← (ASCII value of current_char - shift_value)
if decoded_char < ASCII value of 'a' then
decoded_char ← decoded_char + 26 // wrap around if below 'a'
else
decoded_char ← current_char // non-alphabetic characters remain unchanged
// Append the decoded character to the result
decoded_text ← decoded_text + character corresponding to decoded_char
// Return the final decoded text return decoded_text
Description
This algorithm decodes encoded texts using the Ubchi decipher method, which applies character shifting based on a provided cipher key, ensuring non-alphabetic characters remain unchanged.