<p>Method of producing an electronic device comprising a data memory for storing data items and a key memory for storing at least one cryptographic key of a cryptographic public key mechanism. The method comprises the steps of loading a factory public key into the key memory; and loading factory software signed with a factory private key corresponding to the factory public key into the data memory. The method further comprises the steps of loading into the key memory a product public key different from the factory public key for verifying subsequent data items to be loaded into the data memory after delivering the electronic device to a customer the subsequent data items being signed with a corresponding product private key; and disabling the factory public key prior to delivering the electronic device to the customer.</p>
申请公布号
WO2004025896(A1)
申请公布日期
2004.03.25
申请号
WO2003EP10088
申请日期
2003.09.08
申请人
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);BODENSJOE, MARCUS;OSTHOFF, HARRO;SCHALIN, PATRIK;SMEETS, BERNARD
发明人
BODENSJOE, MARCUS;OSTHOFF, HARRO;SCHALIN, PATRIK;SMEETS, BERNARD