Encrypting a float.

When dealing with encryption in Laravel, it's important to understand that encryption is typically applied to strings. This is because encryption algorithms produce binary data, which is not directly compatible with numeric types like decimal in a database. Here's how you can handle this situation:

1. Change the Column Type: Since encryption results in a string, you should store the encrypted value in a column that can handle strings. You can change the amount column to a string type in your migration.

2. Handle Casting in the Model: You can still work with the amount as a float in your application by using accessors and mutators to handle the conversion between the encrypted string and a float.

Here's how you can implement this:

Migration

Change the column type to string:

$table->string('amount')->default('0.00');

Model

Use accessors and mutators to handle the conversion:

protected $casts = [
    'title' => 'encrypted',
    'description' => 'encrypted',
];

public function getAmountAttribute($value)
{
    // Decrypt the value and convert it to a float
    return (float) decrypt($value);
}

public function setAmountAttribute($value)
{
    // Encrypt the value and store it as a string
    $this->attributes['amount'] = encrypt((string) $value);
}

Explanation

• Migration: By changing the column type to string, you ensure that the encrypted data can be stored without issues.
• Accessor (getAmountAttribute): This method decrypts the stored string and converts it back to a float when you access the amount attribute.
• Mutator (setAmountAttribute): This method encrypts the float value and stores it as a string when you set the amount attribute.

This approach allows you to work with the amount as a float in your application while storing it securely as an encrypted string in the database.