Part of securing an application involves ensuring that highly sensitive information is not stored in a readable or easily decodable format 不用可读或容易解码的格式存储高度敏感的信息，这是保护应用程序的一个方面。
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A new h - arq scheme that uses progressively decodable serially concatenated codes for retransmission is proposed with its design guidelines . theoretical bounds on total number of transmitted bits and throughput performance are derived . finally , the simulation results are given 提出了基于累进可译串行级连码的h - arq体制，论述了其设计原则，推导了重传比特数和通过率的理论限，给出了性能仿真结果。
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The traditional means , such as key , password , cryptogram , id card and even ic card , have fallen behind the needs of economic activity and social security . this is because that they would be forgeable , falsifiable , stolen or decodable 传统的个人身份鉴别手段如钥匙、口令、密码、身份证件，甚至ic卡等识别方式，由于它们具有可假冒、可伪造、可盗用、可破译的弱点，已不能完全满足现代社会经济活动和社会安全防范的需要。
