What is MD5 verification?

Source: Internet
Author: User
Tags hash md5

What is MD5 verification?

In layman's terms---just like everyone's fingerprints are the same, the file MD5 value is the only, the MD5 is used to ensure that the file in the transmission process has not been modified.

From a professional explanation----a MD5 checksum checks the correctness of the data by performing hashing operations on the received transmitted data. The computed hash value is taken and compared with the hash value of the data transfer. If the two values are the same, the transmitted data is complete and correct and is not tampered with (provided that the hash value has not been altered) so that it can be used safely.

MD5 verification can be applied in many fields, such as the inspection of confidential information, the inspection of downloaded files, the encryption of plaintext passwords, etc.

  MD5 Verification Principle Example:

If the customer synchronizes a file to our data center, the file using MD5 checksum, then the client sends a file at the same time will send a check code of the file, we get the file to do the MD5 operation, the results of the calculation and the customer sent the check code comparison, if consistent then believe that the customer sent the file is not wrong, Otherwise, a file error is considered to be resend.

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