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Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam Already Passed $10.49   Add to cart
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Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam Already Passed
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Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam Already Passed 1. How did the ATBASH cipher work? By substituting each letter for the letter from the opposite end of the alphabet (i.e. Abecomes Z, B becomes Y, etc.) 2. DES has a key space of ...

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  • September 5, 2023
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  • 2023/2024
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Introduction to Cryptography - C839 -
ECES EC-Council Certified Encryption
Specialist Practice Exam Already Passed
1. How did the ATBASH cipher work? ✔✔By substituting each letter for the letter from the

opposite end of the alphabet (i.e. Abecomes Z, B becomes Y, etc.)




2. DES has a key space of what? ✔✔2^56




3. Which of the following are valid key sizes for AES (choose three)? ✔✔c. 128


d. 192

e. 256




4. Which of the following algorithms uses three different keys to encrypt the plain text?

✔✔3DES




Triple Data Encryption System




5. Which of the following is a block cipher? ✔✔AES

, The Advanced Encryption Standard (AES) is a symmetric-key block cipher algorithm and U.S.

government standard for secure and classified data encryption and decryption.




6. Which of the following is a type of encryption that has two different keys.




One key can encrypt the message and the other key can only decrypt it? ✔✔Asymmetric




7. Which of the following is an asymmetric cipher? ✔✔RSA




The acronym stands for Rivest, Shamir, and Adelman, the inventors of the technique. The RSA

algorithm is based on the fact that there is *no efficient way to factor very large numbers.*




8. A cipher is defined as what ✔✔The algorithm(s) needed to encrypt and decrypt a message




9. Which of the following is not an asymmetric system? ✔✔AES




The Advanced Encryption Standard (AES) is a symmetric-key block cipher algorithm and U.S.

government standard for secure and classified data encryption and decryption.

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