Error correction for physical uncloneable function

摘要

A chip and method is provided for operating a chip to generate and use a secret key to decrypt contents of a memory, wherein the method comprises: receiving at a PUF circuit in the chip a challenge stored on the chip; outputting from the PUF circuit a k-bit response; combining in the chip the k-bit response with the content of fuses to produce a key; and receiving the key at a decrypter and decrypting contents of a memory in the chip.