How did the ATBASH Cipher Work?

By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes Y, etc.)

By shifting each letter a certain number of spaces

By rotating text a given number of spaces

Test

Encryption algorithms: AES, DES, 3DES and ciphers

Eric Jensen 7 preguntas

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1How did the ATBASH Cipher Work?
1. ABy shifting each letter a certain number of spaces
2. BBy Multi alphabet substitution
3. CBy rotating text a given number of spaces
4. DBy substituting each letter for the letter from the opposite end of the alphabet (i.e. A
  becomes Z, B becomes Y, etc.)
2DES has a key space of what?
1. A2^128
2. B2^192
3. C2^56
4. D2^64
3Which of the following are valid key sizes for AES (choose three)?
1. A56
2. B64
3. C128
4. D192
5. E256
6. F512
4Which of the following algorithms uses three different keys to encrypt the plain text?
1. AAES
2. B3DES
3. CBlowfish
4. DSkipjack
5Which of the following is a block cipher?
1. AAES
2. BRC4
3. CDH
4. DRSA
6Which 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?
1. ASymmetric
2. BAsymmetric
3. CBlock Cipher
4. DStream Cipher
7Which of the following is an asymmetric cipher?
1. ADES
2. BRC4
3. CRSA
4. DAES