Two-contact electronic cigarette and authentication method thereof

The invention discloses a two-contact electronic cigarette and an authentication method thereof. The two-contact electronic cigarette comprises an electronic cigarette rod and an electronic cigarettecartridge, and two contacts of a first circuit of the electronic cigarette rod and two contacts of a second circuit of the electronic cigarette cartridge are in circuit connection; the two-contact electronic cigarette is used for achieving matching authentication of the electronic cigarette rod and the electronic cigarette cartridge. On the basis of connection of the two contacts, the smoke cartridge receives an authentication command sent by the cigarette rod, encryption calculation is completed; a subcarrier load modulation method is adopted, encryption authentication information is fed backto the cigarette rod, so that information interaction and anti-counterfeiting authentication of the smoke cartridge and the cigarette rod are achieved. Compared with a traditional four-contact or three-contact cigarette cartr