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Incorporating Digital Signing & Encryption in Transactions in the Payment System of Sri Lanka Presentation by Sunimal Weerasooriya, CEO LankaClear (Pvt) Ltd.

Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

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Page 1: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Incorporating Digital Signing & Encryption in Transactions in the Payment System of

Sri Lanka

Presentation bySunimal Weerasooriya, CEO

LankaClear (Pvt) Ltd.

Page 2: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Introduction to LankaClear

• Originated  as  Sri  Lanka  Automated  Clearing House  (SLACH)  under  Central  Bank  of  Sri Lanka (CBSL) – 1987

• Divested as a limited liability company owned by all Commercial Banks and the Central Bank of Sri Lanka (CBSL) – 2002

Page 3: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Introduction to LankaClear…

Payment Structure of SLShare Holders 

Product Range of LankaClear

Page 4: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Establishment of LankaSign CSP

• Cyber security,  information piracy, data theft, etc, are words we hear often  these days  in a world  going High  Tech  at  an  ever  increasing speed. 

• Eliminating information piracy, data theft, etc. and  ensuring  security  of  information transmitted online  is even more necessary as e‐payments are fast becoming the norm than the exception. 

Page 5: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Establishment of LankaSign CSP

Recognizing  the  need,  The  Central  Bank  of  Sri Lanka  (CBSL)  invited  LankaClear  (Pvt)  Ltd.  (LCPL) to  be  the  Financial  Sector's  Certification  Service Provider and LCPL  launched LANKASIGN on 22nd May 2009, as per the provisions of the Electronic Transactions Act No. 19 of 2006. 

Page 6: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Root Signing Key - Protection

• LANKASIGN‐CSP  Root  signing  key  pair  is ensured  with  the  use  of  SafeNet  Protect Server Gold HSM which is certified to FIPS‐140 ‐2  Level  3.  The  LANKASIGN‐CSP  Root  signing  key  pairs  are  2048‐bit  and  were  generated  within  the  Protect Server  Gold  HSM.

• The  LANKASIGN‐CSP  takes  necessary precautions  to  prevent  compromise  or unauthorized usage of the key.

Page 7: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Root Signing Key - Recovery

• LANKASIGN‐CSP   Root CA    signing    keys    are  encrypted    and  stored  within  a  secure environment. 

• The decryption key is maintained on a physical media  and  stored    in    a    physically    secured offline  environment which  requires    two    or  more  authorized  officials  of the LANKASIGN‐CSP  to  again  access.  When  any LANKASIGN‐CSP  Root  signing  key  expires,  it will be archived for at least 10 years. 

Page 8: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Types of Digital Certificates

• Secure Server Certificates

• Digital Signature Certificates

• Public Key Encryption Certificates

• Secure E‐mail Certificates

These Certificates are available for use in both the LCPL private networks and public domain.

Page 9: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Secure Server Certificates

These  are  Server  Certificates  that  are  bound to  an  IP  address  that  in  combination with  a SSL Web  Server  to  attest  the  public  server's identity,    providing  full  authentication  and enabling  secure  communication  with customers and business partners.

Example: Certificate  issued  to  authenticate the Web Server used for  Internet   Banking or any other internal web server used in a Bank.

Page 10: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Digital Signature Certificates

Certificates  bound  to  an  identity  of  an individual or an organization  to allow owners of  the  certificates  to  digitally  sign  digital objects (transactions or documents) to certify authenticity.

Example: To  authenticate  a  Banking Customer,  for  online  messages  and documents  exchanged  between  entities  in  a public network.

Page 11: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Public Key Encryption Certificates

Certificates that are bound to an identity of an individual  or  an  organization  to  allow electronic data to be encrypted. 

Example: for Encryption of data transmitted in Internet Banking transactions, to Encrypt data exchanged between branches and head office in a Bank’s network.

Page 12: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Secure Email Certificates

Certificates bound to an e‐mail address  which will allow owners of the certificates to digitally sign e‐mails to ensure authenticity.

Example: For e‐mail communications  in  Inter Bank and Intra Bank networks.

Page 13: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Signing & Encryption

Page 14: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

CITS Clearing Before Digital Signing

Page 15: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

CITS Legs 3 & 4 Completely Online with Digital Signing

Outward Return File

Digital Signing

(Bank Private Key)

Hash

Verify Signature

(Bank’s Public Key)

LankaSign 

OCSP Responder

Calculate 

Hash

Calculate   Hash

Compare

Bank (Sender)

LankaClear (Receiver)

VPN

Hash

Hash

Vice Versa when Inward Return of CITS

Outward Return of CITS

Note: Digital Signature Certificates are being Used

Page 16: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

SLIPS with Digital Signing

Bank CBSL

SLIPS Server

Net SettlementWeb Server

Digital Signing

(Bank Private Key)

VPN

LankaSign 

OCSP Responder

Verify Signature

(Bank’s Public Key)

Digital Signing

(LCPL Private Key)

Verify Signature

(LCPL’s Public Key)

Bank

Note: Digital Signature Certificates are being Used

Page 17: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

US$ Clearing with Digital Signing

Traditional Way With LankaSign

US$ Server Email Server

Digital Signed & Encrypted

US$ Server

Signature Verification & Decrypted

Note: Secure E‐mail Certificates & Public Key Encryption Certificates are being Used

Page 18: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Benefits of PKI Integration

• Data Integrity

• Non‐Repudiation

• Improved Operational Efficiencies.

• Lag Time Elimination.

• Cost Savings & Less Logistic Control Requirement

• Creates a Greener environment

Page 19: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Future of LankaSign

• Build High Awareness among Financial Sector Organizations  on  Email  /  Document  Signing Certificates Usage, Legality and Benefits.

• Provide an Affordable Solution for Mass Scale Public  Usage  of  E‐mail/Doc  Signing Certificates.

• Introduction of Cost Effective Crypto Tokens.

• Seeking  Opportunities  of  Entering  Secure Server Certificate Market 

Page 20: Incorporating Digital Signing & Encryption in Transactions ... · Types of Digital Certificates • Secure Server Certificates • Digital Signature Certificates • Public Key Encryption

Thank You