U shield is a tool for electronic signature and digital authentication of online banking. Built-in micro smart card processor, using 1024-bit asymmetric key algorithm to encrypt, decrypt and digitally sign online data to ensure the confidentiality, authenticity, integrity and non-repudiation of online transactions.

Extended content summary:

U-Shield is the common name of U-Shield and the guardian of online banking security. It looks like a USB flash drive, like a shield, always protecting the safety of online banking funds. U shield adopts high-intensity information encryption, digital authentication and digital signature technology, which is unrepeatable, can effectively prevent payment risks, ensure the safety of customers' online payment funds, and is convenient to use.

Refer to the above? Youdun _ Baidu encyclopedia