Scrypt vs Bcrypt: Which is More Efficient?

What are the main differences between Scrypt and Bcrypt in terms of performance?

Scrypt is designed to be more memory-intensive than Bcrypt, making it harder for attackers to use hardware to crack passwords. Bcrypt, while still secure, is less memory-intensive and can be faster.

In what scenarios would you recommend using Scrypt over Bcrypt?

I would recommend Scrypt for applications where you expect high security needs, especially against hardware attacks, like in cryptocurrency wallets. Bcrypt is still a solid choice for general password hashing.

How do the hashing speeds compare between the two?

Scrypt is generally slower than Bcrypt due to its memory requirements, which can be a trade-off for increased security. Bcrypt can be tuned for speed, making it faster in some scenarios.

Are there any specific vulnerabilities associated with either algorithm?

Both algorithms are considered secure, but Scrypt's design makes it more resistant to GPU-based attacks. Bcrypt has been around longer and has a proven track record, but it's important to keep up with best practices.