确保经过加密的数据不管是在传输过程中还是在存储时，都不能被未经授权的人员访问到。
Ensure that the encrypted data, whether it's in transit or in storage, cannot be accessed by unauthorized persons.
信息安全除了保证数据在本地存储过程中的安全，还应该满足其在网络传输过程中的保密性和完整性要求。
Information security not only includes guaranteeing the security of locally stored data, but also the confidentiality and integrity of data in the process of communication.
图像数据在存储及传输过程中占用了大量带宽资源，因此图像压缩技术就显得尤为重要了。
The image data occupies vast part of band resource in the storage and transmission process, therefore, image compression technology becomes more important than before.
图像数据在存储及传输过程中占用了大量带宽资源，因此图像压缩技术就显得尤为重要了。
The image data occupies vast part of band resource in the storage and transmission process, therefore, image compression technology becomes more important than before.
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