Authentication IC guards against unauthorized battery packs

Dallas – Dallas Semiconductor’s DS2703 is a battery pack authentication IC that implements a challenge/response scheme, utilizing the Secure Hash Algorithm (SHA-1) specified in the Federal Information Publication
180-1/2 and ISO/IEC 10118-3, to authenticate a battery pack for a host system such as a cell phone, PDA, or other portable computing devices. The DS2703, integrated into the battery pack, enables the host to guard against unauthorized packs that could introduce unknown function or substandard operation.