versioned_docs/version-3.0/sql-manual/sql-functions/encrypt-digest-functions/sha2.md

---
{
"title": "SHA2",
"language": "en"
}
---

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## SHA2

### description

Use SHA2 to digest the message.

#### Syntax

`SHA2(str, digest_length)`

#### Arguments

- `str`: content to be encrypted
- `digest_length`: the length of the digest. Support 224, 256, 384, 512

### example

```SQL
mysql> select sha2('abc', 224);
+----------------------------------------------------------+
| sha2('abc', 224)                                         |
+----------------------------------------------------------+
| 23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7 |
+----------------------------------------------------------+
1 row in set (0.13 sec)

mysql> select sha2('abc', 384);
+--------------------------------------------------------------------------------------------------+
| sha2('abc', 384)                                                                                 |
+--------------------------------------------------------------------------------------------------+
| cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7 |
+--------------------------------------------------------------------------------------------------+
1 row in set (0.13 sec)

mysql> select sha2(NULL, 512);
+-----------------+
| sha2(NULL, 512) |
+-----------------+
| NULL            |
+-----------------+
1 row in set (0.09 sec)
```

### keywords

    SHA2, SHA224, SHA256, SHA384, SHA512