Information Technologies Deneme Sınavı Sorusu #651349
Which one is true about systematic cryptography?
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Its algorithms are slower than public cryptographic algorithms. |
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A stream cipher applies an encryption transformation to blocks |
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Data encryption standard is known as a standard block ciphers. |
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A block cipher adds the plaintext digits with a pseudorandom cipher stream. |
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Some important block ciphers are RC4 and SALSA20. |
Block ciphers are symmetric cryptographic algorithms. They are faster algorithms than public key cryptographic algorithms. It uses only one key, that is, the same key is used when encrypting a message or decrypting a ciphertext. However, for block ciphers, sender requires securely transferring the key to the receivers. Tere are well-known and
standard block ciphers including Data Encryption Standard and Advanced Encryption Standard.
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