(PECL radius >= 1.3.0)
radius_salt_encrypt_attr — Salt-encrypts a value
radius_salt_encrypt_attr ( resource $radius_handle , string $data ) : string|false
Applies the RADIUS salt-encryption algorithm to the given value.
In general, this is achieved automatically by providing the RADIUS_OPTION_SALT option to an attribute setter function, but this function can be used if low-level request construction is required.
data
The data to be salt-encrypted.
Returns the salt-encrypted data or false on failure.
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https://www.php.net/manual/en/function.radius-salt-encrypt-attr.php