Author: Zen and the Art of Computer Programming
1 Introduction
As the amount of data grows, the importance of backing up data becomes increasingly apparent. When performing database backup, it is generally necessary to perform an integrity check on the backup file to ensure that the risk of data corruption or tampering is minimized. Currently, the most popular integrity detection method is through md5sum verification. Its advantages are that it is easy to use and fast. This article will introduce in detail the md5sum verification process of MySQL backup files in MySQL.
2. Related concepts and terminology
2.1 MD5 (Message-Digest Algorithm 5)
MD5 (Message-Digest Algorithm 5) is a digest algorithm designed by the US NIST (National Institute of Standards and Technology). It consists of three parts: message, length, and salt. The result after one-way encryption is the message digest. MD5 is used to verify the integrity of data and is a hash algorithm currently widely used in the field of information security.
2.2 SHA-1(Secure Hash Algorithm)
SHA-1 is a cryptographic hash function standard. It is based on the MD4 algorithm, uses more hash operations and various optimization measures, and is more secure than MD5.
2.3 MySQL database backup file
MySQL database backup files refer to data exported from the source database, used to restore the destination database or as a database available to other users. MySQL supports two types of backups