Why is AES_DECRYPT Returning Encrypted Data in MySQL?

Unable to Decrypt Encrypted Data After AES_ENCRYPT in MySQL

Problem Statement:

After encrypting data using AES_ENCRYPT in a MySQL table, an attempt to decrypt the data using AES_DECRYPT results in an inability to view the decrypted value.

Solution:

As per the MySQL Manual, AES_DECRYPT is intended to return the original string after decryption. However, the user is observing that the decrypted value is still being returned as a binary string. To resolve this issue, the user should try casting the decrypted string as a character string using the CAST function.

For example, the following query will cast the decrypted first_name column as a 50-character string:

SELECT *, 
       CAST(AES_DECRYPT(first_name, 'usa2010') AS CHAR(50)) first_name_decrypt 
FROM   user

The user can then use the first_name_decrypt column to view the decrypted data in a readable format.

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