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Communication in automatic teller machine (atm)
The document discusses the architecture and communication systems of Automatic Teller Machines (ATMs), including their hardware, software, and encryption methods. It contrasts different technologies like DDN and MPLS for ATM connectivity, highlighting their features and costs, as well as comparing encryption standards AES-256 and 3DES. The document emphasizes the importance of security in ATM transactions and the efficiency of various data transmission methods.
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Communication in automatic teller machine (atm)
- 1. Communication in Automatic TellerMachine (ATM)
- 2. Knowing in AutomaticTeller Machine (ATM) A block diagram of an ATM
- 3. Hardware ATM hardware thatwe often use in our life
- 4.
- 5. Software Linux Penguin-OS onATMs in Brazil Bank of Philippine running Windows XP OS
- 6. State-Chart for OneTransaction Getting Specifics Sendingto Bank Handling InvalidPin Completing Transaction Printing Receipt Askingifcustomer wantsanother Cancelled Specificsentered Disapproved (exceptinvalidPIN) ApprovedInvalidPIN Approved Cancelled Not Cancelled Toomany InvalidPINs Disapproved (exceptinvalidPIN) OrCancelled
- 7. ATM Transaction Processing Provider DataCenter TANDEMCoreBranch -GPRS -3G -ADSL Encryption Encryption Encryption ATMMachine Encryption=3DESor AES-256bits Branch=AES-256bits ATMMachine=3DES DisasterRecoverySite Encryption Encryption Encryption NormalConnection BackupConnection
- 8. Branch Transaction Processing Provider1 DataCenter TANDEMCoreBranch Encryption Encryption Encryption=3DESor AES-256bits Branch=AES-256bits ATMMachine=3DES DisasterRecoverySite Encryption Encryption Encryption Branch Provider2 MPLSL2 (Speed512-1024kbps) MPLSL1 (Speed512-1024kbps) NormalConnection BackupConnection
- 9. DDN (Digital DataNetwork) • Point to point • Accuracy • Fast • Secure • Backup Connection • High ROI • High cost (compare to other technologies)
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- 11. MPLS VPN (MultiProtocol Label Switching Virtual Private Network) • Point to point, Point to multi-point • VPN • Leverage existing ATM hardware • Ultra fast forwarding • IP Traffic Engineering • Constraint-based Routing • Controllable tunneling mechanism • Voice/Video on IP • QoS constraints • Cost effective (compare to other technologies)
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- 13. DDN vs. MPLS FeatureDDN MPLS Connection Type Point to Point Point to Point, Point to Multi-Point Disaster Recovery Link No Yes VPN Ability No Yes Price High* Low* *Compare to other technologies
- 14. 3DES (Triple DataEncryption Algorithm) • Most widely used algorithm • Pioneered by IBM • It is symmetric crypto system • Developed to protect sensitive, unclassified, US government, Computer data. • Used to provide authentication of electronic funds transfer messages.
- 15. AES-256bits (Advanced Encryption Standard) •Designed simple • Low memory cost • High speed algorithm • The key used to decrypt and encrypt is same • Cipher text and plain text are same size • Fast both in Software and Hardware
- 16. AES-256bits vs. 3DES** FeatureAES 3DES Description Advanced Encryption Standard Triple Data Encryption Standard Timeline Official standard since 2001 Standardized 1997 Type of algorithm Symmetric Symmetric Key size (bits) 256 168 Speed High Low Time to crack (assume a machine could try 255 key per second - NIST) 149 trillion years 4.6 billon years Resource consumption Low Medium **“AES can encrypt data much faster than Triple- DES, a DES enhancement which essentially
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