🏷️Properties of hash functions

• The significance of hash functions is that they provide a unique identifier for everything.

📌 Pre-image resistance

• This is like a blender where no one can create an inverse function that changes the output back into the input.
• It is impossible to estimate the input from the digest (hash).

📌 Second pre-image resistance

• You cannot find a different input that produces the same result.
• Given an input and its digest pair, it's impossible to find another input that creates the same digest.

📌 Collision resistance

• You cannot generate two different inputs that produce the same digest.
• The difference from second pre-image resistance is as follows:
  • Second pre-image resistance does not allow control over the first input, whereas collision resistance allows control over both inputs.