The ACOS6 Secure Access Module (SAM) is designed as a general cryptogram computation module or as a security authentication module for ACOS3 and ACOS6 client cards, and Ultralight-C contactless cards.

The ACOS6 SAM card securely stores cryptographic keys and uses these keys to compute cryptograms for other applications or smart cards. Using this, terminals need not know the master key(s) of an application, whereas the keys never leave the ACOS6 SAM.

The ACOS6 SAM card can perform:

• Mutual Authentication to guarantee the authenticity of the terminal and the client card
• Secure Messaging to ensure data transmission between the card and terminal/server is secured and not susceptible to eavesdropping, replay attack and unauthorized modification
• Purse MAC Computation to authenticate and ensure data integrity of data and commands that are transferred into the card and vice versa.
• Key Diversification to enable diversified entry of keys without exposing the master key.

One application of how the ACOS6 SAM enhances system security can be seen in e-health transactions, as when a doctor or a patient inserts his or her ACOS3 or ACOS6 smart card into the card reader, which prompts the ACOS6 SAM to use the proprietary information it contains to verify the validity of the card.

• Compliance with ISO 7816 Parts 1,2,3,4
• High baud rate switchable from 9600 to 14,400, 28,800, 57,600, 115,200 and 223,200 bps.
• Full 64 K of EEPROM memory for application data.
• Supports ISO7816 Part 4 file structures: Transparent, Linear fixed, Linear Variable, Cyclic.
• DES / Triple DES capability
• Mutual authentication with session key generation.
• Secure Access Module pairs with ACOS3/ACOS6/Ultralight-C.
• Stores and performs all key operations on ACOS3/ACOS6/Ultralight-C including mutual authentication, encrypted PIN submission, secure messaging, and ePurse commands
• Multilevel secured access hierarchy
• Anti-tearing done on file headers and PIN commands. 

• Customer Loyalty
• Multiple e-Purse
• Electronic Government Project
• Secure Access Module
• Hardward Encryption Engine