Question

Зашифруй слово РОЗА шифром Виженера с ключом ДОМ.

Answer 1

Ответ:

Для шифрования слова РОЗА шифром Виженера с ключом ДОМ необходимо повторить ключ до тех пор, чтобы его длина совпадала с длиной слова: ДОМДОМДО.

Потом нужно заменить каждую букву слова РОЗА на соответствующую букву ключа, используя таблицу Виженера. Например, для буквы Р и ключа Д это будет буква Т (R + D = T)

Т.Е. зашифрованное слово РОЗА шифром Виженера с ключом ДОМ будет ТФНД.

Answer 2

Encrypting the word "РОЗА" using the Vigenère cipher with the key "ДОМ"

To encrypt the word "РОЗА" using the Vigenère cipher with the key "ДОМ", we need to follow a specific set of steps. The Vigenère cipher is a polyalphabetic substitution cipher that uses a series of different Caesar ciphers based on the letters of a keyword.

Here's how you can encrypt the word "РОЗА" with the key "ДОМ":

1. Convert the word "РОЗА" and the key "ДОМ" into their respective numerical representations. In this case, we'll use the ASCII values of the characters.

- "Р" has an ASCII value of 1056 - "О" has an ASCII value of 1054 - "З" has an ASCII value of 1059 - "А" has an ASCII value of 1040

- "Д" has an ASCII value of 1044 - "О" has an ASCII value of 1054 - "М" has an ASCII value of 1052

2. Repeat the key "ДОМ" to match the length of the word "РОЗА". In this case, we'll repeat the key three times to match the length of the word.

- "ДОМДОМДОМ"

3. Add the numerical values of the corresponding letters of the word and the key.

- "Р" (1056) + "Д" (1044) = 2100 - "О" (1054) + "О" (1054) = 2108 - "З" (1059) + "М" (1052) = 2111 - "А" (1040) + "Д" (1044) = 2084

4. Convert the resulting numerical values back into characters using the ASCII table.

- 2100 corresponds to the character "Є" - 2108 corresponds to the character "Є" - 2111 corresponds to the character "І" - 2084 corresponds to the character "Є"

Therefore, the encrypted form of the word "РОЗА" using the Vigenère cipher with the key "ДОМ" is "ЄЄІЄ".

Please note that the Vigenère cipher is a relatively simple encryption method and may not provide strong security for sensitive information. It is important to use more advanced encryption algorithms for secure communication.