SHA-2 Hash Functions in Dart (opens in new tab)

Hash functions are one way functions, they are taking an input and will return always the same output based on the input. One of the one used hash function is SHA-256, which is part of the SHA-2 FIPS 180-4 specification. You already know it if you are using Bitcoin and many other crypto-currencies/blockchains. Unfortunately, there are no cryptographic library implementation directly available in the Dart SDK, and we must use external packages. Instead of re-implementing our own, we will use e...