How secure is 256 bit security? Cryptocurrency - Part 2 of 2

The video explores the complexity of breaking cryptographic security by guessing a 256-bit string, emphasizing the vastness of 2^256. It illustrates the computational power needed for such tasks, using GPUs and hypothetical scenarios like 'kilogoogle' and 'Giga galactic supercomputers'. The video also discusses Bitcoin mining, highlighting the efficiency of ASICs over GPUs.

What is the average number of guesses required to find a message with a specific SHA-256 hash?

• 2 to the 256

• 2 to the 128

• 2 to the 512

• 2 to the 1024

How many hashes per second can a GPU-packed computer perform?

• 100 million

• 1 billion

• 4 billion

• 1 million

What is a 'kilogoogle' in terms of computing power?

• A thousand times the power of a Bitcoin miner

• A thousand times the power of a single Google server

• A thousand Google servers combined

• A thousand times the power of a GPU

How many times the age of the universe would it take for a Giga galactic supercomputer to find the correct guess?

• 50 times

• 37 times

• 20 times

• 10 times

What technology do Bitcoin miners use that is more efficient than GPUs?

• Neural networks

• Supercomputers

• Quantum computers

• Application-specific integrated circuits