What Is a Hash Converter?

Hash, which is generally translated as a hash, hash, or transliteration into a hash, is an input of any length (also known as a pre-image) that is transformed into a fixed-length output by a hash algorithm. The output is the hash value. This transformation is a kind of compression mapping, that is, the space of the hash value is usually much smaller than the space of the input. Different inputs may be hashed into the same output, so it is impossible to determine the unique input value from the hash value. Simply put, it is a function that compresses messages of any length to a fixed-length message digest.

Hash algorithm can convert a data into a flag, this flag has a very close relationship with each byte of the source data. Hash algorithm also has a feature that it is difficult to find the inverse law.
The Hash algorithm is a generalized algorithm, and it can also be considered as an idea. The use of the Hash algorithm can improve the utilization of storage space, improve the query efficiency of data, and can also do
If there is a record in the structure that is equal to the key K, it must be at f (K).
Cracking MD5 and SHA1
August 17, 2004 in the United States
Linux command-hash
The hash command is used to display, add, and clear the hash table. The syntax of the command is shown below.

Hash syntax

hash [-l] [-r] [-p <path> <name>] [-t <command>]

Hash option description

Option
Description
-l
Show hash table, including path
-r
Clear the hash table
-p <path> <name>
Adding content to the hash table
-t <command>
Display the full path of the specified command

HASH Hash HASH command

hash displays a # sign after each transfer of data in the data buffer

IN OTHER LANGUAGES

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