在代理签名方案中，原始签名人能将其数字签名权力委托给代理签名人。
With proxy signature, an original signer can entrust his signing authority to a proxy signer.
第一类称为代理多签名体制，它允许一组原始签名人授权给一个代理签名人来代表他们；
The first type is called a proxy multi-signature scheme and it allows a group of original signers to authorize a proxy signer on behalf of the original signer group.
提出的方案能够防止原始签名人生成一个有效的代理环签名，从而保护了代理签名人的权益。
Furthermore, the proposed scheme can prevent the original signer from generating a valid proxy ring signature, thus the profits of the proxy signer are guaranteed.
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