Client - based methods use your private key to sign messages ( proving it came from you ) , which is a more granular level of security , but they have weaknesses as well 基于客户端的方法采用你私人密钥来签署信息(证明它出自于你) ，这是更细化的安全等级，但它们也有弱点。
People thronged the entrance to the australia zoo wildlife reserve tuesday to sign messages on khaki work shirts draped outside the gate , after the death of owner steve irwin 澳洲动物园野生物保留区主人厄文去世后，群众周二涌向入口，在垂挂在门外的卡其工作衬衫上留言签名。
Because the digital signature scheme guarantees nothing about who is the intended recipient of the signed message , nobody can determine whether the malicious party s claim is true or not 由于数字签名方案无法保证谁是经签名的消息的目标接收方，那么也就没有人能确定恶意方声明的真实性。
You specified that this message should be digitally signed , but the application either failed to find an encryption certificate to include in the signed message , or the certificate has expired 您指定要对此消息进行数字签名，但是应用程序无法找到一个加密证书来包含到已经签名的消息中，或者证书已过期。
If your sender has included hisher public key certificate in the signed message , the digital signature on the message will be automatically verified by your smime compatible e - mail application 如果发送人已在签署讯息中包括其公开密码匙证书，讯息上的数码签署将透过您的兼容smime电子邮件应用程式自动核实。
Group signature schemes allow a member of a group to sign messages anonymously on behalf of the group . in case of later dispute , a designated group manager can revoke the anonymity and identify the originator of a signature 群签名的概念是由chaum和van heyst在crypto1991上提出的，它是一种允许群体成员代表群体对消息进行匿名签名的一种数字签名技术。
