https://wiki.pathfindersonline.org/index.php?action=history&feed=atom&title=AY_Honors%2FCryptography_%28SEAU%29%2FAnswer_KeyAY Honors/Cryptography (SEAU)/Answer Key - Revision history2026-04-07T18:33:45ZRevision history for this page on the wikiMediaWiki 1.35.5https://wiki.pathfindersonline.org/index.php?title=AY_Honors/Cryptography_(SEAU)/Answer_Key&diff=621297&oldid=prevW126jep: Create Answer Key page for Cryptography from the SEAU2025-05-29T18:06:07Z<p>Create Answer Key page for Cryptography from the SEAU</p>
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<!-- 1. What does the word Cryptography mean? What is the difference between Steganography and Cryptography? --><br />
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Cryptography, or cryptology, is the art of concealing messages in order to keep them private or confidential.<br />
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When the message is encoded, only those who have been given the key or code book will know how to decode the secret message.<br />
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Steganography is the art of hiding the message with a "cover" so that what people see is the cover without realizing there is a secret message hidden within or under it.<br />
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<!-- 2. Know the meaning of the following terms: --><br />
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Decryption is the reverse process where the unintelligible cipher text is converted back to plain text (normal text).<br />
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<!-- 3. What is the original meaning of the word “cipher?” --><br />
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The word cipher comes from the Arabic word SIFR, meaning "empty" or "zero."<br />
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<!-- 4. What is a scytale? Make a scytale to send a secret message. --><br />
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Scytale in Greek means a baton.<br />
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<!-- 5. What is the “Enigma” machine and how were the Enigma-coded messages finally decoded? --><br />
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The first Enigma was invented by German engineer Arthur Scherbius at the end of World War I.<br />
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Code talkers refer to Native American soldiers who talk using a coded language to transmit secret messages over the radio.<br />
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The Navajo language was an unpublished language and no books in Navajo had ever been published. <br />
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<!-- 8. What is the Rosetta Stone and why is the discovery of this stone so important? --><br />
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The decree by Ptolemy V written on the Rosetta Stone appears in three languages.<br />
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<!-- 10. Know what a transposition cipher is and how to encode and decode a message using it. --><br />
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A transposition cipher is a method of encryption by which the positions held by units of plain text are shifted according to a regular system to create the cipher text.<br />
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<!-- 11. Know what a substitution cipher is and how to encode and decode a message using it. --><br />
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A substitution cipher is a method of encryption by which the units of the plain text are replaced with other symbols which need not be the same as those used in the plain text.<br />
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==References== <!--T:19--><br />
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* [https://www.youtube.com/watch?v=BQUcIkr4N-U Cryptology Pathfinder Honour on YouTube (sponsored by the British Union)]<br />
* [https://youth.adventistchurch.org.uk/e-club-cryptography-honour PowerPoint and Answer Sheet]<br />
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