# How the SHA1() function works in Mariadb?

The `SHA1()`

function in MariaDB is used to compute the SHA-1 160-bit cryptographic hash value of a given string.

The `SHA1()`

function in MariaDB is used to compute the SHA-1 160-bit cryptographic hash value of a given string. SHA-1 (Secure Hash Algorithm 1) is a widely used cryptographic hash function that takes an input of arbitrary length and produces a fixed-size 160-bit (20-byte) hash value. This hash value is commonly used for data integrity checking, digital signatures, and password storage.

## Syntax

The syntax for the MariaDB `SHA1()`

function is as follows:

```
SHA1(str)
```

`str`

: The string for which the SHA-1 hash value is to be computed.

The function returns a 40-character hexadecimal representation of the SHA-1 hash value.

## Examples

### Example 1: Computing the SHA-1 hash value of a string

In this example, we’ll demonstrate how to use the `SHA1()`

function to compute the SHA-1 hash value of a given string.

```
SELECT SHA1('Hello, World!');
```

The following is the output:

`0a0a9f2a6772942557ab5355d76af442f8f65e01`

The `SHA1()`

function computes the SHA-1 hash value of the string `'Hello, World!'`

and returns the 40-character hexadecimal representation.

## Related Functions

The following are some functions related to the MariaDB `SHA1()`

function:

- MariaDB
`MD5()`

function is used to compute the MD5 128-bit cryptographic hash value of a given string. - MariaDB
`SHA2()`

function is used to compute the SHA-2 family of cryptographic hash values, including SHA-224, SHA-256, SHA-384, and SHA-512. - MariaDB
`PASSWORD()`

function is used to encrypt a given string using the MySQL password encryption algorithm. - MariaDB
`ENCODE()`

and`DECODE()`

functions are used to encode and decode strings using various encryption algorithms.

## Conclusion

The `SHA1()`

function in MariaDB provides a convenient way to compute the SHA-1 cryptographic hash value of a given string. While SHA-1 is still widely used, it is important to note that it has known vulnerabilities and is considered less secure than more modern hash functions like SHA-2 and SHA-3. In applications where high security is required, it is recommended to use stronger hash functions or alternative cryptographic techniques. However, for less critical applications where performance and compatibility are prioritized, the `SHA1()`

function can still be a useful tool.