信息安全的目标 (2)完整性(Integrity)): Assurance that data received are exactly as sent by an authorized sender. 通过访问控制(access control)阻止篡 改行为,通过消息摘要message digest)算法检验信息是否被篡改。信息安全的目标 (2)完整性(Integrity): Assurance that data received are exactly as sent by an authorized sender. 通过访问控制(access control)阻止篡 改行为,通过消息摘要(message digest)算法检验信息是否被篡改