Before we cover that, let's talk about nonrepudiation.
在讨论这个问题之前，我们先说一说抗抵赖。
Authentication, encryption, nonrepudiation, and compression.
验证、加密、认可和压缩。
The certificate has no key usage or a key usage that supports digital signatures or nonrepudiation.
凭证没有金钥使用方式，也没有支援数位签章或不可否认性的金钥使用方式。
This model mainly solve Authentication, Nonrepudiation, Privacy and Integrity existed in the current mail system.
该模型主要解决了邮件系统中存在的身份鉴别、防止抵赖、保密性、完整性等安全问题。
Because nonrepudiation is a direct result of authentication, message encryption also does not provide nonrepudiation.
由于认可是身份验证的直接结果，因此邮件加密也不提供认可。
Nonrepudiation provides evidence that a particular action occurred and can be traced to a specific entity (user or business).
抗抵赖性提供了发生过某个动作的证据，并且可以跟踪到特定的实体(用户或者公司)。
Improved scheme has advantages of nonrepudiation, against he original signer's forgery attack and public key substitution attack etc.
改进的方案具有不可否认性，以及抵抗原签名人的伪造攻击和公钥替换攻击等优点。
For instance, a WS-SecurityPolicy may require the client to sign request messages sent to the server, providing nonrepudiation for the service.
例如，WS - SecurityPolicy可能要求客户机对发送到服务器的请求消息进行签名，这为服务提供不可否认性。
Some consumers of a service have greater needs than other consumers of the same service for data confidentiality, integrity, and nonrepudiation.
就保密性、完整性和不可否认性来说，一些服务消费者比相同服务的其他消费者有更高的要求。
In this paper, the authors demonstrate Chan-Wei scheme does not satisfy strong unforgeablity, strong nonrepudiation and strong identifiability.
指出他们的方案不满足强不可伪造性、强不可否认性和强识别性。
Improved schemes have advantages of nonrepudiation, using insecure channel, against the public key substitution attack and collusion attack etc.
改进后的方案具有不可否认性，不使用安全信道，以及抵抗公钥替换攻击和合谋攻击等优点。
The integrity of the message origin needs to be guaranteed (for example, through notary services) to enable validation, auditing, and nonrepudiation when necessary.
必须保证消息源的完整性(如通过公证服务)才能在必要时启用验证、审核和认可。
Simulation test results prove the high feasibility of this security mechanism, insure the integrality and nonrepudiation, and realize the expected security performance.
仿真测试结果表明，该安全性方案具有较高的可行性，可保证SDP的完整性和不可抵赖性，达到了预期的安全效果。
Digital signature has been playing a very important role in the fields of information security, identity authentication, data integrity, nonrepudiation and anonymity, etc.
数字签名已经在信息安全、身份认证、数据完整性、不可否认性以及匿名性等方面发挥了重要作用。
Nowadays, in the computer network environment, all the confidentiality, security, integrality, usability and nonrepudiation of the information must be resolved by encrypting technology.
如今在计算机网络环境下信息的机密性、安全性、完整性、可用性等特性，都需要采用密码技术来解决。
Nowadays, in the computer network environment, all the confidentiality, security, integrality, usability and nonrepudiation of the information must be resolved by encrypting technology.
如今在计算机网络环境下信息的机密性、安全性、完整性、可用性等特性，都需要采用密码技术来解决。
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