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1·Donald is force to forge a signature.

唐纳德被迫伪造签字。

2·Donald be forced to forge a signature.

唐纳德被迫伪造签字。

3·George was forced to forge a signature.

乔治被迫伪造签名。

4·In the real world, we validate signatures by sight, even though a skilled attacker can reliably forge a signature that most people cannot distinguish from the original.

在现实世界中，我们通过视觉验证签名，即使如此，老练的攻击者还是可以伪造一个签名，大多数人都无法将它与原始签名区别开来。

5·The Fail-stop signature is a very secure system, even though the attacker gains signature key, it is difficult to forge signature.

防失败签字是一种十分安全的签字体制，即使攻击者得到签字密钥后也难以伪造签字。

6·A dishonest PKG could forge a valid partially blind signature.

不诚实的PK G可以伪造一个有效的部分盲签名。

7·This paper shows that Chen - Zhu's scheme is universally forgeable, that is, the group authority can forge a valid group signature on an arbitrary message, which stands in any group member.

该文认为该方案是全局可伪造的，群管理员可以对任何消息假冒任何成员生成有效的群签名。

8·Adversary can forge a valiad signature in any time by means of a known valiad signature.

敌手可以利用一个已存在的签名在任意时刻伪造一个合法签名。

9·The certificateless signature scheme can suffer from public key replacement attack so that any one can forge a valid signature on any message.

该方案能受到替换公钥攻击，以至于任何人都能对任何消息成功伪造签名。

10·Because PKG can compute the private key of any user in system, it can forge a blind signature or a proxy signature of any one.

因为PK G可以计算系统内任何用户的私钥，当然可以伪造任何用户的盲签名和代理签名。