A cryptographic hash function is a mathematical algorithm that takes an input (or 'message') and returns a fixed-length string of characters ...

Proof-of-activity is the blockchain consensus algorithm that uses a combination of proof-of-work and proof-of-stake to create blocks and verify data integrity.

For Bitcoin specifically, the hashing algorithm difficulty adjusts up and down depending on how high the hash rate is. This is because creation of new Bitcoin was designed to be controlled over time.

MD5 is an older algorithm that’s considered unsafe for a number of reasons, but it’s still useful for demonstrating how password hashing and cracking work.

SHA1 algorithm securing e-commerce and software could break by year’s end Researchers warn widely used algorithm should be retired sooner.

Because hashing algorithms works in one direction, the only way to obtain the corresponding plaintext is to guess, a process that can require large amounts of time and computational resources. The ...

Researchers say the SHA-1 hashing algorithm, still used to sign almost one in three SSL certificates, should be urgently retired Researchers have found a new way to attack the SHA-1 hashing ...