Method for implementing encryption in storage card, and decryption method and device

摘要

A method for implemented encryption in a memory card, and a decryption method and device, and the method includes: receiving an input encryption key; requesting a subscriber identity card for authenticating the encryption key; after the authentication is successful, using the encryption key to encrypt plaintext data selected in the memory card the to generate encrypted data; generating encryption status information, wherein the encryption status information describes non-confidential information of the encrypted data. By using the encryption key in the subscriber identity card to encrypt data in the memory card, a user can freely select the data to be encrypted in the memory card, thereby enhancing data security in the memory card, facilitating the user operation, and enhancing the user experience.

主权项

1. A method for encrypting data in a memory card, comprising:
receiving an encryption key input by a user; requesting a subscriber identity card for authenticating the encryption key; after the authentication is successful, using the authenticated encryption key to encrypt data selected by the user in the memory card to generate encrypted data; generating encryption status information, wherein the encryption status information describes non-confidential information of the encrypted data; wherein, the encryption key authenticated in the subscriber identity card comprises administrative codes (ADM), a Personal Identification Number1 (PIN1) code, and a Personal Identification Number2 (PIN2) code.