Cryptography and Network security

Symmetric key is

• Sender only used same key

• Receiver only used same key

• Sender and receiver use same key

Asymmetric key is

• Sender use one key

• Receiver use same key

• Both use different key

What is chipper text

• Encryption data

• Encrypted data

• Data Decrypt

Stream ciphers means

• Encrypt digits

• Encrypt letters

• Encrypt digits or letters

Block ciphers means

• It take number of bits

• Encrypt single unit

• Both A and B

Cryptography means

• Encrypt algorithm

• Decrypt algorithm

• Plaintext into ciphers text

AES stands for

• Advanced Encryption Standard

• Additional Entry Services

• Adopted Enhanced Server

DES stands for

• Drop Encryption Server

• Data Encryption Standard

• Digital Encrypt Server

Encryption is

• Convert plaintext to ciphertext

• Convert ciphertext to plaintext

• None of the above

Stenographer is

• Cover images

• Original images

• Original image is converted into duplicate image