Homomorphic secret sharing is a way to share information but still keep it secret. It works by breaking up a secret (like a password) into pieces, and then giving each piece to a different person. The secret itself can't be put back together because no one has enough pieces, but you can still do math with the pieces while they are still separate. So, if you wanted to add two numbers together but still keep them both secret, you could use homomorphic secret sharing to do that.