Enhanced access protection can be achieved by sharing a secret password,
PIN code, cryptographic key, et cetera. That is, by spliting a secret
object into a number of pieces, called shadows or shares, which can then be
stored on different computers or cards. On top of a few known schemes of
secret sharing we will present a new one whose crypographic power is based
on the hardness of integer factorization. A very brief introduction to the
present state-of-the-art of modern cryptography will be provided for those
who are (still) not experts in this field.