Digital image authentication includes active authentication and passive authentication.

数字图像认证技术包括主动与被动两种方法。

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However, active credentials can submit credentials to back-end applications using standard authentications, such as HTTP form-based authentication or basic authentication.

不过，主动凭证可以使用标准认证(如基于HTTP表单的认证或基本认证)向后端应用程序提交凭证。

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Users may select encryption without specifying authentication, but this action leaves the packets vulnerable to active attacks, which can lead to an outside entity breaking the encryption.

用户可以选择不用特定的认证进行加密，但是这样会让包容易受到攻击，导致让别人破坏加密。

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