中文版

什么是动态密码？

在信息安全领域，动态密码是一种安全认证技术，旨在提高用户登录和交易的安全性。与传统的静态密码相比，动态密码具有更高的随机性和时效性，因此更难被破解或窃取。

动态密码的生成通常基于一定的算法和随机数生成器，每次登录或交易时都会生成一个新的密码。这些密码可能是数字、字母或特殊字符的组合，也可能是通过动态令牌设备生成的一次性密码。

使用动态密码时，用户需要在登录或交易时输入由系统生成的动态密码。由于密码是随机生成的，并且每次登录或交易都会更换，因此即使密码在传输过程中被截获，攻击者也只能在有限的时间内使用它。

动态密码的优点在于其高度的随机性和时效性，这使得它成为一种有效的安全防御手段。然而，它也存在一些局限性。例如，如果用户丢失了动态令牌设备或无法及时接收动态密码，可能会导致登录或交易失败。

总的来说，动态密码是一种重要的安全认证技术，可以有效提高用户登录和交易的安全性。然而，在使用动态密码时，用户需要注意保护自己的动态令牌设备和及时接收动态密码，以确保其安全有效。

英文版

What Is a Dynamic Password?

In the field of information security, a dynamic password is a security authentication technology designed to enhance the security of user logins and transactions. Unlike traditional static passwords, dynamic passwords have higher randomness and timeliness, making them more difficult to crack or steal.

The generation of dynamic passwords is typically based on algorithms and random number generators. A new password is generated each time a user logs in or performs a transaction. These passwords can be combinations of numbers, letters, or special characters, or they can be one-time passwords generated by a dynamic token device.

When using a dynamic password, the user is required to enter the system-generated password during the login or transaction process. Because the password is randomly generated and changes for each login or transaction, even if the password is intercepted during transmission, an attacker can only use it for a limited time.

The advantage of dynamic passwords lies in their high randomness and timeliness, making them an effective security defense mechanism. However, they also have some limitations. For example, if a user loses their dynamic token device or is unable to receive the dynamic password in a timely manner, it may result in failed logins or transactions.

Overall, a dynamic password is an important security authentication technology that can effectively enhance the security of user logins and transactions. However, when using dynamic passwords, users need to be aware of protecting their dynamic token devices and receiving dynamic passwords in a timely manner to ensure their safety and effectiveness.