Mật mã học Mã Hóa

Front

What is a hash function?

Back

A mathematical algorithm that generates a summary or hash value of a message.

Front

What modern cryptographic method is used to confirm the identity of a specific message and ensure that its contents have not changed?

Back

Hash function

Front

What is a fingerprint of the author’s message that is compared with the recipient’s locally calculated hash of the same message?

Back

Message digest

Front

What does SHS stand for in cryptography?

Back

Secure Hash Standard

Front

How many main properties does an ideal cryptographic hash function have?

Back

4

Front

How many keys does Symmetric Encryption require? What is it called?

Back

One key, called a secret key

Front

What is called symmetric encryption?

Back

An encryption method that uses the same secret key for both encryption and decryption.

Front

What are some popular symmetric encryption cryptosystems? Options: DES, 3DES, AES, RSA, ECC, Diffie-Hellman, SHA-256, MD5, HMAC, PGP, DSA, ElGamal

Back

DES, 3DES, AES

Front

What is the primary challenge of symmetric key encryption?

Back

Securely sharing the secret key between sender and receiver.

Front

What is the difference between DES and AES?

Back

AES is more secure and supports larger key sizes than DES.