Secure Electronic Transaction (SET) was developed by Visa and MasterCard to securely process credit card transactions online. It provides confidentiality through encryption, trust through digital certificates, and privacy by limiting information access. A typical SET transaction involves the customer sending a purchase request to the merchant containing encrypted order and payment information with a dual signature. The merchant forwards the payment information to the payment gateway for authorization and sends a purchase response to the customer. SET requires extensive cryptography including digital signatures, certificates, and symmetric/asymmetric encryption to authenticate parties and protect information, resulting in increased processing overhead compared to traditional transactions.
Secure Electronic Transaction
Contents are:
Secure Electronic Transaction
SET Business Requirements
SET Protocols
Parties in SET
Implementation of SET
SET Transaction
Dual Signature in SET
Dual Signature Operation
SET Supported Transaction
Credit Card Protocols
A Payment Gateway is an ecommerce application that authorizes payments for e-business, online retailers etc. Analogy of payment is cash counters which are located in the retail outlets. Payment gateways encrypt sensitive information such as credit card numbers to ensure that information passes securely between the customer and the merchant.
Remote sensing and monitoring are changing the mining industry for the better. These are providing innovative solutions to long-standing challenges. Those related to exploration, extraction, and overall environmental management by mining technology companies Odisha. These technologies make use of satellite imaging, aerial photography and sensors to collect data that might be inaccessible or from hazardous locations. With the use of this technology, mining operations are becoming increasingly efficient. Let us gain more insight into the key aspects associated with remote sensing and monitoring when it comes to mining.
India Orthopedic Devices Market: Unlocking Growth Secrets, Trends and Develop...Kumar Satyam
According to TechSci Research report, “India Orthopedic Devices Market -Industry Size, Share, Trends, Competition Forecast & Opportunities, 2030”, the India Orthopedic Devices Market stood at USD 1,280.54 Million in 2024 and is anticipated to grow with a CAGR of 7.84% in the forecast period, 2026-2030F. The India Orthopedic Devices Market is being driven by several factors. The most prominent ones include an increase in the elderly population, who are more prone to orthopedic conditions such as osteoporosis and arthritis. Moreover, the rise in sports injuries and road accidents are also contributing to the demand for orthopedic devices. Advances in technology and the introduction of innovative implants and prosthetics have further propelled the market growth. Additionally, government initiatives aimed at improving healthcare infrastructure and the increasing prevalence of lifestyle diseases have led to an upward trend in orthopedic surgeries, thereby fueling the market demand for these devices.
Secure Electronic Transaction
Contents are:
Secure Electronic Transaction
SET Business Requirements
SET Protocols
Parties in SET
Implementation of SET
SET Transaction
Dual Signature in SET
Dual Signature Operation
SET Supported Transaction
Credit Card Protocols
A Payment Gateway is an ecommerce application that authorizes payments for e-business, online retailers etc. Analogy of payment is cash counters which are located in the retail outlets. Payment gateways encrypt sensitive information such as credit card numbers to ensure that information passes securely between the customer and the merchant.
Remote sensing and monitoring are changing the mining industry for the better. These are providing innovative solutions to long-standing challenges. Those related to exploration, extraction, and overall environmental management by mining technology companies Odisha. These technologies make use of satellite imaging, aerial photography and sensors to collect data that might be inaccessible or from hazardous locations. With the use of this technology, mining operations are becoming increasingly efficient. Let us gain more insight into the key aspects associated with remote sensing and monitoring when it comes to mining.
India Orthopedic Devices Market: Unlocking Growth Secrets, Trends and Develop...Kumar Satyam
According to TechSci Research report, “India Orthopedic Devices Market -Industry Size, Share, Trends, Competition Forecast & Opportunities, 2030”, the India Orthopedic Devices Market stood at USD 1,280.54 Million in 2024 and is anticipated to grow with a CAGR of 7.84% in the forecast period, 2026-2030F. The India Orthopedic Devices Market is being driven by several factors. The most prominent ones include an increase in the elderly population, who are more prone to orthopedic conditions such as osteoporosis and arthritis. Moreover, the rise in sports injuries and road accidents are also contributing to the demand for orthopedic devices. Advances in technology and the introduction of innovative implants and prosthetics have further propelled the market growth. Additionally, government initiatives aimed at improving healthcare infrastructure and the increasing prevalence of lifestyle diseases have led to an upward trend in orthopedic surgeries, thereby fueling the market demand for these devices.
Discover the innovative and creative projects that highlight my journey throu...dylandmeas
Discover the innovative and creative projects that highlight my journey through Full Sail University. Below, you’ll find a collection of my work showcasing my skills and expertise in digital marketing, event planning, and media production.
Memorandum Of Association Constitution of Company.pptseri bangash
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
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Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
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Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
https://seribangash.com/difference-public-and-private-company-law/
Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
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At its core, generative artificial intelligence relies on the concept of generative models, which serve as engines that churn out entirely new data resembling their training data. It is like a sculptor who has studied so many forms found in nature and then uses this knowledge to create sculptures from his imagination that have never been seen before anywhere else. If taken to cyberspace, gans work almost the same way.
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The world of search engine optimization (SEO) is buzzing with discussions after Google confirmed that around 2,500 leaked internal documents related to its Search feature are indeed authentic. The revelation has sparked significant concerns within the SEO community. The leaked documents were initially reported by SEO experts Rand Fishkin and Mike King, igniting widespread analysis and discourse. For More Info:- https://news.arihantwebtech.com/search-disrupted-googles-leaked-documents-rock-the-seo-world/
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Putting the SPARK into Virtual Training.pptxCynthia Clay
This 60-minute webinar, sponsored by Adobe, was delivered for the Training Mag Network. It explored the five elements of SPARK: Storytelling, Purpose, Action, Relationships, and Kudos. Knowing how to tell a well-structured story is key to building long-term memory. Stating a clear purpose that doesn't take away from the discovery learning process is critical. Ensuring that people move from theory to practical application is imperative. Creating strong social learning is the key to commitment and engagement. Validating and affirming participants' comments is the way to create a positive learning environment.
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2. Credit Cards on the Internet
• Problem: communicate credit card and purchasing
data securely to gain consumer trust
– Authentication of buyer and merchant
– Confidential transmissions
• Systems vary by
– Type of public-key encryption
– Type of symmetric encryption
– Message digest algorithm
– Number of parties having private keys
– Number of parties having certificates
3. Credit Card Protocols
• SSL 1 or 2 parties have private keys
• TLS (Transport Layer Security)
– IETF version of SSL
• iKP (IBM)
• SEPP (Secure Encryption Payment Protocol)
– MasterCard, IBM, Netscape
• STT (Secure Transaction Technology)
– VISA, Microsoft
• SET (Secure Electronic Transactions)
– MasterCard, VISA all parties have certificates
OBSOLETE
VERY SLOW
ACCEPTANCE
4. Secure Electronic Transaction
(SET)
• Developed by Visa and MasterCard
• Designed to protect credit card
transactions
• Confidentiality: all messages encrypted
• Trust: all parties must have digital
certificates
• Privacy: information made available only
when and where necessary
6. SMU
SET Business Requirements
• Provide confidentiality of payment and
ordering information
• Ensure the integrity of all transmitted
data
• Provide authentication that a cardholder is
a legitimate user of a credit card account
• Provide authentication that a merchant can
accept credit card transactions through its
relationship with a financial institution
7. SMU CSE 5349/7349
SET Business Requirements (cont’d)
• Ensure the use of the best security
practices and system design techniques to
protect all legitimate parties in an
electronic commerce transaction
• Create a protocol that neither depends on
transport security mechanisms nor
prevents their use
• Facilitate and encourage interoperability
among software and network providers
9. SMU
SET Transactions
• The customer opens an account with a card issuer.
– MasterCard, Visa, etc.
• The customer receives a X.509 V3 certificate signed by a bank.
– X.509 V3
• A merchant who accepts a certain brand of card must possess two
X.509 V3 certificates.
– One for signing & one for key exchange
• The customer places an order for a product or service with a merchant.
• The merchant sends a copy of its certificate for verification.
10. SMU
SET Transactions
• The customer sends order and payment
information to the merchant.
• The merchant requests payment authorization
from the payment gateway prior to shipment.
• The merchant confirms order to the customer.
• The merchant provides the goods or service to
the customer.
• The merchant requests payment from the
payment gateway.
11. SMU
Key Technologies of SET
• Confidentiality of information: DES
• Integrity of data: RSA digital signatures
with SHA-1 hash codes
• Cardholder account authentication:
X.509v3 digital certificates with RSA
signatures
• Merchant authentication: X.509v3 digital
certificates with RSA signatures
• Privacy: separation of order and payment
information using dual signatures
12. SMU
Dual Signatures
• Links two messages securely but allows only one party to
read each.
MESSAGE 1
DIGEST 1
NEW DIGEST
HASH 1 & 2
WITH SHA
MESSAGE 2
DIGEST 2
CONCATENATE DIGESTS
TOGETHER
HASH WITH SHA TO
CREATE NEW DIGEST
DUAL SIGNATURE
PRIVATE KEY
ENCRYPT NEW DIGEST
WITH SIGNER’S PRIVATE KEY
13. SMU
Dual Signature for SET
• Concept: Link Two Messages Intended for Two
Different Receivers:
– Order Information (OI): Customer to Merchant
– Payment Information (PI): Customer to Bank
• Goal: Limit Information to A “Need-to-Know” Basis:
– Merchant does not need credit card number.
– Bank does not need details of customer order.
– Afford the customer extra protection in terms of
privacy by keeping these items separate.
• This link is needed to prove that payment is intended
for this order and not some other one.
14. SMU
Why Dual Signature?
• Suppose that customers send the merchant two
messages:
• The signed order information (OI).
• The signed payment information (PI).
• In addition, the merchant passes the payment
information (PI) to the bank.
• If the merchant can capture another order
information (OI) from this customer, the merchant
could claim this order goes with the payment
information (PI) rather than the original.
15. SMU
Dual Signature Operation
• The operation for dual signature is as follows:
– Take the hash (SHA-1) of the payment and order information.
– These two hash values are concatenated [H(PI) || H(OI)] and
then the result is hashed.
– Customer encrypts the final hash with a private key creating
the dual signature.
DS = EKRC [ H(H(PI) || H(OI)) ]
16. SMU
DS Verification by Merchant
• The merchant has the public key of the customer
obtained from the customer’s certificate.
• Now, the merchant can compute two values:
H(PIMD || H(OI))
DKUC[DS]
• Should be equal!
17. SMU
DS Verification by Bank
• The bank is in possession of DS, PI, the message digest for
OI (OIMD), and the customer’s public key, then the bank
can compute the following:
H(H(PI) || OIMD)
DKUC [ DS ]
18. SMU
What did we accomplish?
• The merchant has received OI and verified the signature.
• The bank has received PI and verified the signature.
• The customer has linked the OI and PI and can prove the
linkage.
21. SMU
Purchase Request: Initiate Request
• Basic Requirements:
– Cardholder Must Have Copy of Certificates for
Merchant and Payment Gateway
• Customer Requests the Certificates in the Initiate
Request Message to Merchant
– Brand of Credit Card
– ID Assigned to this Request/response pair by
customer
– Nonce
22. SMU
Purchase Request: Initiate Response
• Merchant Generates a Response
– Signs with Private Signature Key
– Include Customer Nonce
– Include Merchant Nonce (Returned in Next
Message)
– Transaction ID for Purchase Transaction
• In Addition …
– Merchant’s Signature Certificate
– Payment Gateway’s Key Exchange Certificate
23. SMU
Purchase Request: Purchase Request
• Cardholder Verifies Two Certificates Using Their CAs and
Creates the OI and PI.
• Message Includes:
– Purchase-related Information
– Order-related Information
– Cardholder Certificate
25. SMU
Merchant Verifies Purchase Request
• When the merchant
receives the Purchase
Request message, it
performs the following
actions:
– Verify the cardholder
certificates by means
of its CA signatures.
– Verifies the dual
signature using the
customer’s public key
signature.
26. SMU
Merchant Verification (cont’d)
– Processes the order
and forwards the
payment information
to the payment
gateway for
authorization.
– Sends a purchase
response to the
cardholder.
27. SMU
Purchase Response Message
• Message that Acknowledges the Order and References
Corresponding Transaction Number
• Block is
– Signed by Merchant Using its Private Key
– Block and Signature Are Sent to Customer Along with
Merchant’s Signature Certificate
• Upon Reception
– Verifies Merchant Certificate
– Verifies Signature on Response Block
– Takes the Appropriate Action
28. SMU
Payment Process
• The payment process is broken down into two steps:
– Payment authorization
– Payment capture
29. SMU
Payment Authorization
• The merchant sends an authorization request message to
the payment gateway consisting of the following:
– Purchase-related information
• PI
• Dual signature calculated over the PI & OI and signed
with customer’s private key.
• The OI message digest (OIMD)
• The digital envelop
– Authorization-related information
– Certificates
30. SMU
Payment Authorization (cont’d)
– Authorization-related information
• An authorization block including:
– A transaction ID
– Signed with merchant’s private key
– Encrypted one-time session key
– Certificates
• Cardholder’s signature key certificate
• Merchant’s signature key certificate
• Merchant’s key exchange certificate
31. SMU
Payment: Payment Gateway
• Verify All Certificates
• Decrypt Authorization Block Digital Envelope to Obtain
Symmetric Key and Decrypt Block
• Verify Merchant Signature on Authorization Block
• Decrypt Payment Block Digital Envelope to Obtain
Symmetric Key and Decrypt Block
• Verify Dual Signature on Payment Block
• Verify Received Transaction ID Received from Merchant
Matches PI Received from Customer
• Request and Receive Issuer Authorization
33. SMU
SET Overhead
Simple purchase transaction:
• Four messages between merchant and customer
• Two messages between merchant and payment
gateway
• 6 digital signatures
• 9 RSA encryption/decryption cycles
• 4 DES encryption/decryption cycles
• 4 certificate verifications
Scaling:
• Multiple servers need copies of all certificates