什么是信息安全? 工TU-X.800给出的相关属性的定义: (4)真实性(Authentication): assurance that the communicating entity is the one it claims to be. peer entity authentication. Data-origin authentication.什么是信息安全? ITU-X.800给出的相关属性的定义: (4)真实性(Authentication): assurance that the communicating entity is the one it claims to be. peer entity authentication. Data-origin authentication