Patent ID: 8274365
Filing Date: 2012-09-25
Classification: E05B,G07C

Abstract:
1. A smart lock system, comprising the combination of: an electronic lock having a body defining a card opening, said body having disposed therein a lock microprocessor, a clock providing date and time to the lock microprocessor, an encrypted lock memory for storing encrypted information, a lock memory access encryption engine interconnecting the lock microprocessor and the encrypted lock memory and adapted to encrypt and decrypt information transferred therebetween using a first encryption key, an unencrypted lock memory in communication with the lock microprocessor for storing unencrypted information, a latch mechanism operable by the lock microprocessor to secure or release the shackle for motion relative to the body, a first card interface having internal contacts accessible via the card opening and having a power contact connected to power the lock microprocessor, the clock, and the latch mechanism, and a first card encryption engine interconnecting the lock microprocessor and the first card interface and adapted to encrypt and decrypt information transferred therebetween using a second encryption key, and a key card comprising therein a card microprocessor, a second card interface having external contacts arranged to engage the internal contacts of the electronic lock when the key card is inserted to the card opening of the electronic lock and having a power contact arranged to engage the power contact of the electronic lock and connected to power the card microprocessor, a second card encryption engine interconnecting the card microprocessor and the second card interface and adapted to encrypt and decrypt information transferred therebetween using the second encryption key, an unencrypted card memory in communication with the card microprocessor for storing unencrypted information including the first encryption key, an encrypted card memory for storing encrypted information, and a card memory access encryption engine interconnecting the card microprocessor and the encrypted card memory and adapted to encrypt and decrypt information transferred therebetween, wherein engagement of the key card with the electronic lock activates the lock and causes transfer of data between the key card encrypted memory and the electronic lock encrypted memory, thereby causing the lock to open.