Master key and Pairwise Master Key encryption

Hi, I want to know about the Master key (MK) encapsulation and Pairwise Master key (PMK) generation during EAP-TLS or EAP-TTLS methods. When the supplicant is authenticated, the server generates a MK and sends it in encrypted format to the supplicant. How this MK (I think it is a random number) is encrypted? Which algorithm is used and which parameters are included (input) to disguise the MK? Then how the PMK is generated independently inside server and supplicant? What algorithm and parameters are used to cryptically pass the PMK to authenticator (Access point)? Please tell me clearly because I am a newbie. Which source codes include these operations, where should I look? Thank you. /Khan