Question:
The best-known multiple-letter encryption cipher is:
The best-known multiple-letter encryption cipher is:
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Multiple-letter ciphers process groups of letters, enhancing security over single-letter methods.
Updated On: Jan 17, 2026
- Caesar cipher
- Hill cipher
- Playfair cipher
- Block cipher
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The Correct Option is B
Solution and Explanation
The Hill cipher is a well-known multiple-letter encryption cipher that uses linear algebra and matrix operations to encrypt a block of letters. It operates on groups of characters, making it a block cipher in essence.
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