At present, there are three kinds of traitor tracing schemes against collusion key attack, which are symmetrical traitor tracing schemes and dissymmetrical traitor tracing schemes;

目前，对抗共谋密钥攻击的叛徒追踪方案主要有对称追踪方案、非对称追踪方案、门限追踪方案；

youdao

Germany's attack has been weakened by the loss of some key players through injury.

德国队几名主力队员因伤不能上场，削弱了进攻力量。

《牛津词典》

The appropriate key(s) will be shaded to indicate the type of attack(s) each technique helps to prevent.

对于每种技术，适当的方块将加上底纹，表示这种技术有助于防范的攻击类型。

youdao

One key facet will be to determine if the man charged with the attack, Umar Farouk Abdulmutallab, acted alone or in concert with others.

VOA: standard.2009.12.27

"I think a lot of people feel it would be a mistake, " Davidson said, using a low-key attack that went over well with influential meeting participants.

CNN: Group overseeing Internet changes sets its election rules

Finland were not prepared to settle for a draw though and came out on the offensive at the start of what turned out to be a poor second half with the excellent Jari Litmanen key to their attack.

BBC: Finland 2-1 Wales

Unlike the regular Internet we all use everyday, which was originally designed to distribute the AACS hex key withstand a nuclear attack, Internet2 is designed primarily for speed -- up to 9.08Gbps in most recent tests.

ENGADGET: Smoking kills Internet2