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Eccouncil Exam 212-81 Topic 12 Question 25 Discussion

Actual exam question for Eccouncil's 212-81 exam
Question #: 25
Topic #: 12
[All 212-81 Questions]

Early attempt to make substitution ciphers more robust, masks letter frequencies, plain text letters map to multiple cipher text symbols.

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Suggested Answer: D

Integrity

https://en.wikipedia.org/wiki/Cryptographic_hash_function#Verifying_the_integrity_of_messages_and_files

An important application of secure hashes is verification of message integrity. Comparing message digests (hash digests over the message) calculated before, and after, transmission can determine whether any changes have been made to the message or file.


by Gearldine at Jan 23, 2024, 06:29 AM

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Tien
18 hours ago
I'm pretty sure it's the Homophonic Substitution Cipher. Masking letter frequencies sounds like a key feature of that one.
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Cecily
2 days ago
I think the answer is B) Playfair Cipher.
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Lashon
3 days ago
I'm not sure, but I think A) Scytale Cipher could also be a possible answer.
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Kasandra
4 days ago
I agree with Gilbert, Playfair Cipher makes sense for this question.
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Gilbert
5 days ago
I think the answer is B) Playfair Cipher.
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