什么是信息安全? TTU-X.800给出的相关属性的定义: (5)不可抵赖性(Non- Repudiation): protection against denial by one of the parties in a communication oRigin non-repudiation: proof that the message was sent by the specified par a Destination non-repudiation: proof that the message was received by the specified party 通过数字签名( digital signature)来提供不 赖性服务。什么是信息安全? ITU-X.800给出的相关属性的定义: （5）不可抵赖性（Non-Repudiation）： protection against denial by one of the parties in a communication. Origin non-repudiation：proof that the message was sent by the specified party. Destination non-repudiation：proof that the message was received by the specified party. 一般通过数字签名（digital signature）来提供不 可抵赖性服务