aes_decrypt

Description

Uses the AES_128_ECB algorithm to decrypt a string and returns a binary string.

AES is short for advanced encryption standard and ECB is short for electronic code book. The key used to encrypt the string is a 128-bit string.

Syntax

aes_decrypt(str,key_str);

Parameters

str: the string to decrypt. It must be of the VARCHAR type.

key_str: the key used to encrypt str. It must be of the VARCHAR type.

Return value

Returns a value of the VARCHAR type. If the input is invalid, NULL is returned.

Examples

Decode a Base64 string and use this function to decrypt the decoded string into the original string.

mysql> select AES_DECRYPT(from_base64('uv/Lhzm74syo8JlfWarwKA==  '),'F3229A0B371ED2D9441B830D21A390C3');
+--------------------------------------------------------------------------------------------+
| aes_decrypt(from_base64('uv/Lhzm74syo8JlfWarwKA==  '), 'F3229A0B371ED2D9441B830D21A390C3') |
+--------------------------------------------------------------------------------------------+
| starrocks                                                                                  |
+--------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
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