How is GSM authentication done?
Authentication in the GSM system is achieved by the Base Station sending out a challenge to the mobile station. The MS uses a key stored on its SIM to send back a response that is then verified. This only authenticates the MS, not the user. To request for a call or to receive a call, the MS has to get authenticated.
How are authentication and security maintained in GSM networks?
In GSM, security is implemented in three entities: 1) Subscriber identity module (SIM) contains authentication key Ki (64-bit), ciphering key (Kc) generating algorithm, and authentication algorithm. … SIM is protected by a PIN and owned by an operator. SIM applications can be written with a SIM tool kit.
What kind of security will be provided for GSM?
Confidentiality of a user identity; it provides IMSI’s (international mobile subscriber identity) security. GSM communication uses IMSI rarely, it uses TMSI (Temporary Mobile Subscriber Identity) to provide more secure communication and to avoid disclosing of user’s identity.
What are the 3 important features of GSM security?
GSM – Security and Encryption
- Mobile Station Authentication. The GSM network authenticates the identity of the subscriber through the use of a challenge-response mechanism. …
- Signalling and Data Confidentiality. …
- Subscriber Identity Confidentiality.
What are the functions of authentication in GSM?
Authentication is a process of exchanging information between a communications device and the mobile network which allows the carrier or network operator to confirm the true identity of the user (or device). The authentication algorithm used in the GSM system is contained in the subscriber identity module – SIM – card.
Why GSM services are separated?
The GSM standard also provides separate facilities for transmitting digital data. This allows a mobile phone to act like any other computer on the Internet, sending and receiving data via the Internet Protocol.
What are the advantages of GSM?
Advantages of GSM :
- More suitable network with robust features.
- No roaming charges on International calls.
- Worldwide connectivity and extensive coverage.
- SAIC and DAIC techniques used in GSM provide very high transmission quality.
What data is encrypted in GSM?
In GSM, data stream between mobile subscriber (MS) and BTS is encrypted by A5 encryption algorithm. A5’s encryption and decryption key (k c ) is generated base on MS’s SIM card parameter (k i ) and a random number, RAND.