Is there a standard that defines what is a valid SSID and password?

Question

We are developing a wireless n/w configuration UI and need to check if a SSID is a valid one? Are there any restrictions on the character set? length ? anything more..

Answer 1

According to last standard 802.11-2012 (Section 6.3.11.2.2), it can be 0-32 octets with an unspecified or UTF8 encoding.