2) He owned his defeat.

他自认失败。
3) I acknowledged myself as beaten.

我自认失败。
4) He owned himself defeated .

他承认自己失败。
5) authentication failure

认证失败
1.
IKEv2 can not achieve active identity protection to initiator in initial exchange,and it has the security flaw of authentication failure.
针对IKEv2初始交换存在认证失败和发起者的身份暴露问题,提出了一种改进协议。
补充资料:我自
1.犹我咱。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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