V2EX checksum

Checksum

释义 Definition

校验和;校验码:一种由数据通过特定算法计算出来的短数字/字符串,用来检测数据在传输或存储过程中是否发生错误或被篡改。(常见于文件下载验证、网络通信、数据备份等场景;也可泛指“总和的校验值”。)

发音 Pronunciation

/teksm/

例句 Examples

The installer verifies the file’s checksum before running.
安装程序会在运行前验证文件的校验和。

If the checksum doesn’t match, the downloaded data may be corrupted or tampered with, so you should download it again from a trusted source.
如果校验和不匹配,下载的数据可能已损坏或被篡改,因此应从可信来源重新下载。

词源 Etymology

checksumcheck(检查、核对)+ sum(总和)构成,字面意思是“用于核对的总和”。早期常指把一串数字/字节按规则相加得到的“核对值”,后来扩展到各种更复杂的校验算法(如 CRC、哈希校验)产生的校验值。

相关词 Related Words

文学作品 Literary Works

  • The Cuckoo’s Egg(Clifford Stoll):涉及计算机安全与数据完整性问题的讨论中常出现类似“校验/校验和”的概念与用法。
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