We have intercepted a message that we need to decode. Luckily, we know that they use the letters A to Z, space, 0 to 9. We also know that when they encode messages they start by shifting the first letter once to the left, then shift the next two letters right twice, then the next three letters left 3 times, then the next four letters right 4 times, the next five letters left 5 times, and so on. a. If the message intercepted was HMMG2WEIAO what was the original message? b. What would we get if we encoded the phrase 2750H FRSC (the Os are zeros) using the given algorithm?

We have intercepted a message that we need to decode. Luckily, we know that they use the letters A to Z, space, 0 to 9. We also know that when they encode messages they start by shifting the first letter once to the left, then shift the next two letters right twice, then the next three letters left 3 times, then the next four letters right 4 times, the next five letters left 5 times, and so on. a. If the message intercepted was HMMG2WEIAO what was the original message? b. What would we get if we encoded the phrase 2750H FRSC (the Os are zeros) using the given algorithm?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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