Bankcard Password Protection Method and System

A bankcard password protection method includes the steps: a security processor randomly generates a public and private key pair; the security processor sends a public key to an application processor; the application processor acquires a bankcard password, encrypts the bankcard password by means of the public key and sends the encrypted bankcard password to the security processor; and the security processor decrypts the bankcard password by means of a private key. In this way, the bankcard password protection method of the invention improves the security of the bankcard password input process and brings a better experience feeling to customers. 1. A bankcard password protection method , characterized by comprising the steps:randomly generating a public and private key pair, by a security processor;sending a public key to an application processor, by the security processor;acquiring a bankcard password, encrypting the bankcard password by means of the public key and transmitting the encrypted bankcard password to the security processor, by the application processor; anddecrypting the bankcard password by means of a private key, by the security processor.2. The bankcard password protection method according to claim 1 , characterized by further comprising the steps:encrypting a bankcard password plaintext obtained through decryption to form a PIN block in a ciphertext format and sending the PIN block in the ciphertext format to the application processor, by the security processor; andsending the PIN block in the ciphertext format as well as transaction data to a background to complete verification, by the application processor.3. The bankcard password protection method according to claim 2 , wherein a key used to form the PIN block in the ciphertext format through encryption is prestored in the security processor and used for transaction verification with the background.4. The bankcard password protection method according to claim 1 , characterized by further comprising ...

Método e sistema de proteção por senha de cartão bancário

Um método de proteção por senha de cartão bancário inclui as etapas: o processador de segurança gera um par de chaves pública e privada aleatoriamente; o processador de segurança envia uma chave pública para um processador de aplicativos; o processador de aplicativos adquire uma senha de cartão bancário, criptografa a senha do cartão bancário por meio da chave pública e envia a senha do cartão bancário criptografada ao processador de segurança; e o processador de segurança descriptografa a senha do cartão bancário por meio de uma chave privada. Deste modo, o método de proteção por senha de cartão bancário da invenção melhora a segurança do processo de introdução de senha do cartão bancário, e proporciona uma melhor experiência aos clientes.

Bankcard password protection method and system