What are collision attacks in hash functions?

Can you explain what collision attacks in hash functions are?

Sure! Collision attacks occur when two different inputs produce the same hash output, compromising data integrity.

Why are collision attacks a problem for security?

They can allow attackers to substitute malicious data for legitimate data, undermining trust in digital signatures and certificates.

Can you give an example of a famous collision attack?

One well-known example is the MD5 hash function, which has been shown to be vulnerable to collision attacks, leading to its decline in use.

How can we protect against collision attacks?

Using stronger hash functions like SHA-256 and implementing proper security protocols can help mitigate the risk of collision attacks.