# SHA1

Hashes the given string or binary data using the so-called [secure hash algorithm](https://en.wikipedia.org/wiki/SHA1), version 1. SHA1 has been deprecated as a means of securely signing data.

It is present in SingleStore mainly for backwards compatibility and for systems which require a “good enough” hashing function and can tolerate collisions. For a more secure hash function, see \[SHA2].

## Syntax

```sql
SHA1(plaintext)
SHA(plaintext)

```

## Arguments

* plaintext: the data to hash.

## Return Type

40 lower case hexadecimal digits corresponding to the 160-bit binary hash value.

## Examples

```sql
SELECT SHA1('ohai'), SHA('ohai');

```

```output

+------------------------------------------+------------------------------------------+
| SHA1('ohai')                             | SHA('ohai')                              |
+------------------------------------------+------------------------------------------+
| dca51952447d80bd35bf631bc21f06648798b7e0 | dca51952447d80bd35bf631bc21f06648798b7e0 |
+------------------------------------------+------------------------------------------+

```

## Related Topics

* [SHA2](https://docs.singlestore.com/db/v9.1/reference/sql-reference/string-functions/sha-2.md)

***

Modified at: February 27, 2023

Source: [/db/v9.1/reference/sql-reference/string-functions/sha-1/](https://docs.singlestore.com/db/v9.1/reference/sql-reference/string-functions/sha-1/)

(An index of the documentation is available at /llms.txt)