checksum

简明释义

英[ˈtʃeksʌm]美[ˈtʃeksʌm]

n. [计] 校验和；[计] 检查和

英英释义

单词用法

同义词

反义词

例句

1.The HDFS client software implements checksum checking on the contents of HDFS files.

HDFS客户端软件实现了HDFS文件内容的校验和。

2.To prevent people from writing to this file, Apple protects it with a checksum hash which has to be reverse-engineered.

为了防止人们在该文件写入内容，苹果用校验和散列（checksum hash）函数对其进了加密。

3.Then, before trusting the input data, verify that the checksum matches.

然后，在输入数据前，先验证检验和是否匹配。

4.This message's integrity is protected via an encrypted checksum using the session key between the client and authentication service.

此消息的完整性通过一个校验和来保护，该校验和使用客户端与身份验证服务器之间的会话密钥进行加密。

5.As long as you've run the checksum value check, you can safely ignore any warning about these utilities.

只要你运行了校验和工具进行校验，那么就可以放心的忽略掉关于这些工具的任何警告信息。

6.The application also requires a correct checksum result for each block in order to work properly.

要程序运行正常则需每个模块的校验和结果正确。

7.You can add a checksum file to your data files.

你能够把一份检查机检验和文件加到你的数据上文件。

8.The checksum algorithm used in this application is SHA-256.

该应用程序使用的校验和算法是SHA-256。

9.The software generates a checksum to verify the integrity of the downloaded file.

该软件生成一个校验和来验证下载文件的完整性。

10.Before sending data over the network, a checksum is calculated to ensure it hasn't been corrupted.

在通过网络发送数据之前，会计算一个校验和以确保数据没有被损坏。

11.Many file-sharing services provide a checksum for users to verify their downloads.

许多文件共享服务提供校验和供用户验证他们的下载文件。

12.If the checksum does not match, the file may have been tampered with.

如果校验和不匹配，文件可能已经被篡改。

作文

In the digital age, where data integrity and security are paramount, the concept of checksum plays a crucial role. A checksum is a value used to verify the integrity of a file or a data transfer. It is generated by running an algorithm on a set of data, resulting in a unique string of characters that represents that data. When the data is sent or stored, this checksum can be recalculated at any time to ensure that the original data has not been altered or corrupted during transmission or storage. For instance, consider the process of downloading software from the internet. When you download a file, it is accompanied by a checksum, often in the form of a hash value like MD5 or SHA-256. After the download completes, your computer can compute the checksum for the downloaded file and compare it to the provided checksum. If the two values match, you can be confident that the file is intact and has not been tampered with. On the other hand, if the checksum values do not match, it indicates that the file may be corrupted or compromised, and it is advisable to discard it.The importance of checksum extends beyond just file downloads. In data transmission, such as sending emails or transferring files over networks, a checksum is essential to ensure that the data arrives at its destination without errors. Network protocols often utilize checksums to detect errors that may occur during data transmission. For example, the Transmission Control Protocol (TCP) employs checksums to verify the integrity of packets sent over a network. If a packet's checksum does not match upon arrival, the receiving system knows that there was an error, prompting a retransmission of the data.Moreover, checksums are also widely used in data storage systems. When data is written to a hard drive or solid-state drive, a checksum can be calculated and stored alongside the data. This way, when the data is read back, the system can recalculate the checksum to ensure that the data has not degraded over time or due to hardware failures. This mechanism is particularly important for long-term data storage, where data integrity is critical.However, while checksums are a powerful tool for ensuring data integrity, they are not infallible. Attackers can exploit weaknesses in certain checksum algorithms to create malicious files that still produce the same checksum, a technique known as a collision attack. Therefore, it is essential to use robust and secure checksum algorithms like SHA-256 to minimize the risk of such vulnerabilities.In conclusion, the concept of checksum is integral to maintaining the integrity and security of data in our increasingly digital world. Whether it is for verifying downloaded files, ensuring accurate data transmission, or safeguarding stored information, checksums provide a reliable method for detecting errors and potential tampering. As technology continues to evolve, the importance of using strong and secure checksum algorithms will only grow, underscoring the need for vigilance in protecting our digital assets.

在数字时代，数据完整性和安全性至关重要，checksum的概念发挥着关键作用。checksum是一个用于验证文件或数据传输完整性的值。它是通过对一组数据运行算法生成的，产生一个唯一的字符字符串，代表该数据。当数据被发送或存储时，这个checksum可以在任何时候重新计算，以确保原始数据在传输或存储过程中没有被更改或损坏。例如，考虑从互联网下载软件的过程。当你下载一个文件时，它会附带一个checksum，通常以MD5或SHA-256等哈希值的形式。在下载完成后，你的计算机可以计算下载文件的checksum并将其与提供的checksum进行比较。如果两个值匹配，你可以确信文件是完整的，没有被篡改。另一方面，如果checksum值不匹配，则表明文件可能已损坏或受到威胁，建议丢弃该文件。checksum的重要性不仅限于文件下载。在数据传输中，例如发送电子邮件或通过网络传输文件，checksum对于确保数据在到达目的地时没有错误至关重要。网络协议通常利用checksum来检测在数据传输过程中可能发生的错误。例如，传输控制协议（TCP）采用checksum来验证通过网络发送的数据包的完整性。如果数据包的checksum在到达时不匹配，接收系统就知道出现了错误，从而促使重新传输数据。此外，checksum还广泛用于数据存储系统。当数据写入硬盘或固态硬盘时，可以计算一个checksum并将其与数据一起存储。这样，当数据被读取时，系统可以重新计算checksum以确保数据没有随着时间的推移或由于硬件故障而退化。这个机制对于长期数据存储尤其重要，因为数据完整性至关重要。然而，尽管checksum是确保数据完整性的强大工具，但它并不是万无一失的。攻击者可以利用某些checksum算法的弱点，创建仍然产生相同checksum的恶意文件，这种技术称为碰撞攻击。因此，使用强大且安全的checksum算法（如SHA-256）以最小化此类漏洞的风险至关重要。总之，checksum的概念对于维护我们日益数字化世界中的数据完整性和安全性至关重要。无论是验证下载的文件、确保准确的数据传输，还是保护存储的信息，checksum都提供了一种可靠的方法来检测错误和潜在的篡改。随着技术的不断发展，使用强大和安全的checksum算法的重要性只会增加，这突显了在保护我们数字资产方面保持警惕的必要性。