在LDAP客户机使用证书进行加密之前，它会验证自己正在与之进行交谈的服务器拥有这个证书，这是通过加密一个挑战并验证服务器可以对其进行解密实现的。

Before the LDAP client USES a certificate for encryption, it verifies that the server it is talking with owns the certificate by encrypting a challenge and verifying that the server can decrypt it.

youdao

因此，当许多国家本着合作精神走到一起承担我们共同的职责和应对共同的挑战时，就能大有作为，今天这一点得到了验证。

So today is a testament to what is possible when nations come together in a spirit of partnership to embrace our Shared responsibility and confront a Shared challenge.

youdao

在身份验证或检验环境中使用击键力学的挑战是把可接受的变化与不正确的凭证辩别开来。

The challenge in using keystroke dynamics in an authentication or verification context is to discern acceptable variations from incorrect credentials.

youdao