【中文版】

建行网银盾，全称中国建设银行网上银行盾，是建设银行推出的网银安全工具。它的主要作用是保护用户的资金安全，提升交易的便捷性。

首先，建行网银盾具有数字签名功能，可以确保网上交易信息的真实性和完整性。在进行转账、支付等交易时，使用网银盾进行数字签名，能够防止黑客篡改交易信息，保障了用户的资金安全。

其次，建行网银盾具有身份认证功能。用户在登录网银时，必须使用网银盾进行身份验证。通过这种方式，可以防止非法用户入侵，保护了用户的账户安全。

此外，建行网银盾还具有信息加密功能。使用网银盾对交易信息进行加密，可以防止信息泄露，保障了用户的信息安全。同时，这也避免了网络传输中的数据被截获或窃取的风险。

最后，建行网银盾还支持多种便捷的交易操作。用户可以通过网银盾进行在线支付、转账、查询等交易操作，无需再到银行柜台或使用其他物理介质进行操作，大大提高了交易的便捷性。

总之，建行网银盾是保障网上银行交易安全的重要工具。它具有数字签名、身份认证、信息加密等多种安全功能，同时也为用户的交易操作提供了便利。因此，建议用户在使用网上银行时，务必配备并正确使用建行网银盾。

【英文版】

The online banking U-key of China Construction Bank, also known as the CCB online banking U-key, is a secure tool launched by the bank for online banking transactions. Its main function is to protect users' funds and improve the convenience of transactions.

Firstly, the CCB online banking U-key has the function of digital signature, which ensures the authenticity and integrity of online transaction information. When conducting transactions such as转账 and payment, using the online banking U-key for digital signature can prevent hackers from tampering with transaction information and protect users' funds.

Secondly, the CCB online banking U-key has the function of identity authentication. When logging in to online banking, users must use the online banking U-key for identity verification. Through this method, it can prevent illegal users from入侵 and protect users' account security.

In addition, the CCB online banking U-key also has the function of information encryption. Using the online banking U-key to encrypt transaction information can prevent information leakage and protect users' information security. At the same time, it also avoids the risk of data being intercepted or stolen during network transmission.

Finally, the CCB online banking U-key supports a variety of convenient transaction operations. Users can conduct transactions such as online payment, transfer, and inquiry through the online banking U-key without having to go to the bank counter or use other physical media for operation, greatly improving the convenience of transactions.

In summary, the CCB online banking U-key is an important tool to ensure the security of online banking transactions. It has multiple secure features such as digital signature, identity authentication, and information encryption, while also providing convenience for users' transaction operations. Therefore, it is recommended that users should always carry and use the CCB online banking U-key properly when using online banking.