Was Charlie exaggerating when he gave Peter an estimate for the time that would be required to crack the encryption key using a brute force attack?

When Charlie gave Peter an estimate of how long it would take to break the encryption key using a brute force attack, was he exaggerating the time required?

Is there any other way for Peter to prevent losing his password except using key recovery?

What is the genesis of avalanches? How can one generate the avalanche effect in the current block ciphers? Give an example to explain your idea.What is the genesis of avalanches? How can one generate the avalanche effect in the current block ciphers? Give an example to explain your idea.