check sum

简明释义

检验总数

英英释义

例句

1.If the check sum 校验和 does not match, the download may be corrupted.

如果check sum 校验和不匹配，则下载可能已损坏。

2.The software will automatically generate a check sum 校验和 for every downloaded file.

该软件会自动为每个下载的文件生成一个check sum 校验和。

3.Before sending the file, make sure to calculate the check sum 校验和 to ensure its integrity.

在发送文件之前，请确保计算check sum 校验和以确保其完整性。

4.You can use various tools to verify the check sum 校验和 of your data.

您可以使用各种工具来验证数据的check sum 校验和。

5.Always verify the check sum 校验和 after transferring files over the network.

在通过网络传输文件后，始终验证check sum 校验和。

作文

In the world of computer science and data transmission, accuracy is paramount. One of the key concepts that help ensure data integrity is the check sum. A check sum is a value used to verify the integrity of a data set. It is computed by performing a mathematical operation on the data and producing a fixed-size numerical result. This result can then be sent along with the data itself. When the data is received, the recipient can perform the same operation on the received data to generate a new check sum. If this newly calculated check sum matches the one that was sent, it indicates that the data has not been altered during transmission.The importance of a check sum cannot be understated. In a digital age where information is constantly being shared across networks, ensuring that data remains unchanged is critical. For example, in financial transactions, even a small error could lead to significant consequences. Therefore, using a check sum helps prevent errors that may arise due to hardware malfunctions, software bugs, or even malicious attacks.There are several algorithms used to calculate check sums, including simple methods like adding up all the bytes in a data packet and more complex ones like CRC (Cyclic Redundancy Check). Each method has its advantages and disadvantages, depending on the level of error detection needed. While a simple check sum might suffice for less critical applications, more complex algorithms are necessary for systems where data integrity is crucial.In programming, implementing a check sum is relatively straightforward. Most programming languages provide libraries or functions that can compute a check sum for various data types. For instance, in Python, one can use the built-in `hashlib` library to generate a hash value that serves as a check sum. This approach not only ensures data integrity but also enhances the security of sensitive information by providing a way to verify that data has not been tampered with.Moreover, the concept of a check sum extends beyond just data transmission; it is also applicable in data storage. When files are saved on a hard drive or cloud storage, a check sum can be generated to check for corruption over time. If a file is later accessed and its check sum does not match the original, it indicates that the file may be corrupted, prompting the user to restore it from a backup.In conclusion, the check sum plays a vital role in ensuring the integrity and reliability of data. As technology continues to evolve and the volume of data we handle increases, understanding and utilizing check sums will become even more essential. Whether in data transmission, storage, or software development, the implementation of check sums can significantly reduce the risk of data loss and enhance overall system reliability. Therefore, both developers and users alike should prioritize the use of check sums in their digital practices to safeguard against potential errors and threats.

在计算机科学和数据传输的世界中，准确性至关重要。确保数据完整性的关键概念之一是校验和。校验和是用于验证数据集完整性的值。它是通过对数据进行数学运算并生成固定大小的数值结果来计算的。这个结果可以与数据一起发送。当接收到数据时，接收方可以对接收到的数据执行相同的操作，以生成新的校验和。如果这个新计算的校验和与发送的那个匹配，则表示数据在传输过程中没有被更改。校验和的重要性不容小觑。在信息不断在网络上共享的数字时代，确保数据保持不变至关重要。例如，在金融交易中，即使是一个小错误也可能导致重大后果。因此，使用校验和有助于防止由于硬件故障、软件错误或恶意攻击而引起的错误。有几种算法可用于计算校验和，包括简单的方法，如将数据包中的所有字节相加，以及更复杂的方法，如CRC（循环冗余校验）。每种方法都有其优缺点，具体取决于所需的错误检测级别。虽然简单的校验和可能足以满足不太关键的应用，但对于数据完整性至关重要的系统，则需要更复杂的算法。在编程中，实现校验和相对简单。大多数编程语言提供库或函数，可以计算各种数据类型的校验和。例如，在Python中，可以使用内置的`hashlib`库生成作为校验和的哈希值。这种方法不仅确保数据完整性，还通过提供验证数据未被篡改的方法来增强敏感信息的安全性。此外，校验和的概念不仅限于数据传输；它在数据存储中也适用。当文件保存在硬盘或云存储中时，可以生成校验和以检查随时间推移的损坏。如果稍后访问文件时，其校验和与原始的不匹配，则表明该文件可能已损坏，提示用户从备份中恢复。总之，校验和在确保数据的完整性和可靠性方面发挥着至关重要的作用。随着技术的不断发展和我们处理的数据量的增加，理解和利用校验和将变得更加重要。无论是在数据传输、存储还是软件开发中，实施校验和都能显著降低数据丢失的风险，并增强整体系统的可靠性。因此，开发人员和用户都应优先在其数字实践中使用校验和，以防范潜在的错误和威胁。