Data security protection method, system and device and storage medium

The invention provides a data security protection method, system and device and a storage medium. The method comprises the following steps: receiving user identity information; reading account data corresponding to the user identity information from a standby database or a user storage database; and when the user performs data transmission based on the account data, encrypting the transmission data by adopting hybrid encryption. Through the implementation of the scheme of the invention, the transmission data is encrypted by adopting hybrid encryption, and the account data and transaction data of the user are prevented from being leaked. 本申请提供了一种数据安全保护方法、系统、设备及存储介质，接收用户身份信息；从备用数据库或用户存储数据库中读取与用户身份信息对应的账户数据；在用户基于账户数据进行数据传输时，采用混合加密对传输数据进行加密。通过本申请方案的实施，采用混合加密对传输数据进行加密，防止用户的账户数据和交易数据泄露。