The invention discloses a block chain token login method. The method comprises the following steps: S1, firstly, making and uploading a public key to a block chain; s2, calculating a private key through an RSA
algorithm; s3, generating different private keys through the public key by using an RSA
algorithm; distributing and storing the private key into different hardware devices (such as an intelligent id card); and S4, if a user wants to log in the
bank account checking
system, only when the hardware
verification is passed and the face
system verification is passed, the user can log in the
bank account checking
system after double
verification. The method has the following advantages: 1, for the security problem, external hardware and face recognition are combined for permission login, so that the security is greatly improved, and the possibility of network
virus or illegal
software hijacking is eliminated; 2, since external
software performs matching key login according to an
algorithm, waste bandwidth and CPU performance do not need to be considered at all; and 3, if attacked, the public key cannot be destroyed or changed.