Journey of Webhooks from Basics to Tech Depths

Offline Digital Payments: Boosting Financial Inclusion in India

Why Switch to a New Age Credit Card System?

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/promotion-banner-1.webp" alt="M2P Fintech" title="" id="wx7r0ba8i" width="100%" height="317">Debit cards are pivotal to a bank’s digital payment mix. With minimal credit and regulatory risks involved, they are safe digital payment facilitators that deliver convenient transactions, freedom from debt, and rewards. Banks leverage debit cards for higher customer acquisition, retention, and loyalty while diversifying revenue streams through transaction fees.&nbsp;In India, the number of debit cards in circulation is projected to witness a steady increase of 84.6 million cards by 2028. The total number of debit cards is anticipated to reach an impressive&nbsp;1&nbsp;billion*.<h2 class="heading-node" id="0zxvdvu3r" style="text-align: justify">Need for a Modern Debit Card Solution&nbsp;</h2>Banks today need to keep up with growing customer expectations, advanced technology innovation, and regulatory changes. Though legacy debit card systems have served traditional banks so far, they have limited agility and are high on cost. The restrictions impact their ability to accelerate efficiencies, handle major transaction volumes, and accommodate technology upgrades and innovations. These hinder the bank’s capability to go-to-market quicker with debit cards that support instant upgrades and growth.&nbsp;Investing in a scalable, robust, new-age&nbsp;<a class="link" href="https://m2pfintech.com/blog/say-goodbye-to-hassles-simplify-debit-card-management-with-m2p-fintechs-revolutionary-platform/">debit card management</a>&nbsp;solution that accelerates&nbsp;<a class="link" href="https://m2pfintech.com/blog/debit-card-issuance-101-all-you-need-to-know/">debit card issuance</a>&nbsp;and decreases operational inefficiencies is crucial for banks. But integrating modern debit card management systems into traditional banking infrastructures is no easy feat. Manual data transfers, disparate systems, and limited adaptability can lead to errors and reduced user satisfaction. Integration and migration often involve reliance on multiple vendors which further adds to the confusion and inefficiencies.&nbsp;<h2 class="heading-node" id="w72zpikw1" style="text-align: justify">Comprehensive, Cloud-agnostic Debit Card Stack</h2>Our modern&nbsp;<a class="link" href="https://m2pfintech.com/debit-cards/">Debit Card Management System</a>&nbsp;is a robust, scalable, cloud-agnostic solution that eliminates the need for multiple vendors and serves as a comprehensive one-stop shop for all your debit card issuance and operational requirements. By seamlessly integrating with financial institutions, payment gateways, and third-party services, we deliver enhanced security, lightning-fast transactions, and an unbeatable user experience. While end customers can enjoy unified interface, real-time updates, and top-tier security, banks benefit from seamless operations and quick turnaround times.&nbsp;<h2 class="heading-node" id="eplkua3t4" style="text-align: justify">Key Ancillary System Integrations&nbsp;</h2>Our ability to seamlessly stitch in loyalty programs, personal finance,&nbsp;<a class="link" href="https://m2pfintech.com/blog/all-you-need-to-know-about-building-a-robust-fraud-and-risk-management-frm-system/">fraud and risk management</a>,&nbsp;<a class="link" href="https://m2pfintech.com/blog/recon360-redefining-payment-reconciliation/">reconciliation</a>,&nbsp;<a class="link" href="https://m2pfintech.com/blog/unlock-the-future-of-banking-with-next-gen-core-banking-solutions/">core banking</a>, and&nbsp;<a class="link" href="https://m2pfintech.com/blog/transform-digital-onboarding-with-vkyc/">KYC</a>&nbsp;modules with the debit card management solution sets us apart from our peers. The add-on integrations are seamless with zero lag, and they enhance the value and functionality in addition to creating a personalized and holistic banking experience for the customer.<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Img_1-1.webp" alt="M2P Fintech" title="" width="100%" height="342"><h3 class="heading-node" id="nxm0zsuql" style="text-align: justify">Loyalty Program</h3>Loyalty programs boost customer lifetime value. When debit card systems are integrated with robust loyalty modules, banks can ensure their valued customers earn rewards and exclusive benefits without any issues. They can personalize offers, offer points, and reward redemption based on debit card usage.<h3 class="heading-node" id="qdxgvzm0u" style="text-align: justify">Personal Finance Management (PFM)</h3>With our user-friendly PFM technology, financial institutions can help their clients set and stick to realistic financial objectives like saving money and paying off debt. The personal financial management module enables users to keep tab on their money, make plans, and get tailored advice.<h3 class="heading-node" id="ktcsgqt3l" style="text-align: justify">Fraud Risk Management (FRM)</h3>Banks can mitigate risks and make informed decisions with our&nbsp;<a class="link" href="https://m2pfintech.com/blog/all-you-need-to-know-about-building-a-robust-fraud-and-risk-management-frm-system/">FRM</a>&nbsp;solutions. Integrating our FRM module provides real-time fraud detection, thus protecting customers and financial institutions.<h3 class="heading-node" id="tdlca3qj8" style="text-align: justify">Access Control Server (ACS)</h3>With our&nbsp;<a class="link" href="https://m2pfintech.com/acs/">ACS</a>&nbsp;system, banks can benefit from enhanced authentication measures that include two-factor authentication. These help to protect against unauthorized access and ensure secure debit card usage for customers.<h3 class="heading-node" id="2q599yge7" style="text-align: justify">Reconciliation</h3>Integrating with&nbsp;<a class="link" href="https://m2pfintech.com/blog/recon360-redefining-payment-reconciliation/">Recon360</a>, our standalone product enables seamless end-to-end reconciliation for transactions, payments, and value-added services. Banks can have greater control over card networks, digital channels, multicurrency, and more. It simplifies exception management, dispute resolution, loyalty tracking, and fund transfers.&nbsp;&nbsp;<h3 class="heading-node" id="ushsikmr2" style="text-align: justify">Core Banking System (CBS)</h3><a class="link" href="https://m2pfintech.com/blog/unlock-the-future-of-banking-with-next-gen-core-banking-solutions/">CBS</a>&nbsp;is the bedrock upon which a bank’s financial services can be built. Layering the debit card management system into the CBS enables complete financial management by streamlining fund transfers through organized and efficient processes.&nbsp;<h3 class="heading-node" id="qvqsoaswy" style="text-align: justify">Know Your Customer (KYC)</h3>Our platform lets you collect, verify, and manage&nbsp;<a class="link" href="https://m2pfintech.com/blog/crack-the-kyc-jigsaw-ease-onboarding-compliance/">KYC</a>&nbsp;information and streamline the onboarding process. The KYC solution ensures regulatory compliance, enhances customer onboarding efficiency, and improves overall customer experience.<h3 class="heading-node" id="t4evco8xo" style="text-align: justify">Switch</h3>The&nbsp;<a class="link" href="https://m2pfintech.com/blog/what-is-a-payment-gateway-and-payment-switch-understanding-the-basics-of-payments-architecture/">payment switch</a>&nbsp;facilitates smooth communication between payment service providers, routing transactions, and processing payments. M2P’s Switch-as-a-Service offers versatile capabilities, including authentication, tokenization, and transaction processing. Its architecture ensures seamless transaction orchestration within the debit card solution.&nbsp;<h3 class="heading-node" id="ljectnvx1" style="text-align: justify">Notifications</h3>M2P integrates with the bank’s Short Message Service (SMS) vendor for customer debit card notifications. It covers various events like successful transactions, limit exceeded, and more. Our real-time notification system aids customers in staying informed.&nbsp;&nbsp;&nbsp;By coupling the above discussed ancillary systems with our debit card stack, we provide a comprehensive and integrated solution that delivers enhanced functionality and increased value for both the customers and the financial institution. The debit card management solution suite can be readily integrated with products individually or used as a stand-alone product, making it a versatile option.&nbsp;<h2 class="heading-node" id="fx5l17msw" style="text-align: justify">What Makes our Debit Card Solution Unique?&nbsp;</h2><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/img_2.2-1-1.webp" alt="M2P Fintech" title="" width="100%" height="230"><h3 class="heading-node" id="e4cnhg0y8" style="text-align: justify">Plug-and-Play Architecture</h3>Our approach is not one-size-fits-all. We empower banks to customize and shape the system according to their unique preferences and workflows. Moreover, our add-on products further enhance the debit card management system’s capabilities, with full customization options for cherry-picking functionalities that align with the institution’s goals, ultimately elevating the overall customer experience. This comprehensive approach sets us apart, making our debit card solution the first of its kind.&nbsp;<h3 class="heading-node" id="vg5mi011s" style="text-align: justify">Smooth Third-Party Integrations</h3>Our system is built on a foundation of modularity and microservices, allowing seamless integration with both in-house and external services, including essential systems like CRM. The heart of our approach lies in our&nbsp;<a class="link" href="https://m2pfintech.com/blog/api-the-power-that-drives-new-age-banking-ecosystems/">API</a>-based approach, which ensures smooth and uninterrupted interactions with third-party integrations, particularly emphasizing the significance of CRM and the power of omnichannel engagement tools. By embracing this cohesive ecosystem, each component works harmoniously together, enriching the overall experience for users.&nbsp;<h3 class="heading-node" id="m1lao4e6i" style="text-align: justify">Diverse Banking Platforms</h3>Our debit card management system facilitates seamless interactions with diverse banking platforms, enabling a unified experience for customers across&nbsp;Kiosk, POS, IVR,&nbsp;ATM, online banking, and mobile apps. Our versatile architecture ensures smooth data exchange and synchronization, streamlining operations and enhancing customer convenience. With us, banks can deliver a cohesive and user-friendly banking experience, thus maximizing customer satisfaction.&nbsp;<h3 class="heading-node" id="1rc7qkc3z" style="text-align: justify">Safety, Efficiency, and Reliability</h3>Banking can be made easier with increased safety, instantaneous efficiency, and decreased downtime. Our Microservices-based strategy is both flexible and robust, while our high-performance, distributed streaming infrastructure guarantees rapid data flow. You can relax knowing that any potential risks to your financial system have been mitigated and that errors and downtime have been kept to a minimum.&nbsp;<h2 class="heading-node" id="ilmu5qvhx" style="text-align: justify">Opportunities and Possibilities&nbsp;&nbsp;</h2>The future of debit card management holds innovative solutions. Akin to the versatility of AWS, our revolutionary platform empowers banks with intuitive drag-and-drop functionality, granting unparalleled autonomy to perform functions freely.&nbsp;Our debit card management system is about to set new standards with state-of-the-art AI-driven fraud detection and security protocols that mitigate risks in real time. By leveraging blockchain-based measures, we ensure an impregnable fortress for data and transactions, fostering unshakable trust within the digital ecosystem.&nbsp;And that’s not all.&nbsp;&nbsp;We take customer experience a step further with partnerships with an extensive array of services and financial products. This open ecosystem unlocks limitless opportunities, enabling banks to curate a truly personalized and unparalleled banking experience.&nbsp;Supercharge your debit card management system and get ahead of the competition <a class="link" href="https://m2pfintech.com/contact-us/?utm_source=mainblog&amp;utm_medium=blg&amp;utm_campaign=july">Talk to&nbsp;M2P today!</a>*<a class="link" href="https://www.statista.com/forecasts/1150250/debit-cards-in-use-forecast-in-india">Number of debit cards in India 2013-2028 | Statista</a><a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://m2pfintech.com/newsletter/" target="_blank" rel="noreferrer noopener">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox.Follow us on&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://www.linkedin.com/company/m2pfintech/mycompany/" target="_blank" rel="noreferrer noopener">LinkedIn</a>&nbsp;and&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://twitter.com/m2pfintech" target="_blank" rel="noreferrer noopener">Twitter</a>&nbsp;for insightful fintech bytes curated for curious minds like you.

Elevate your Banking Operations with our Integrated Debit Card Management System

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Banner-1.webp" alt="M2P Fintech" title="" width="100%" height="487">In the world of iOS app development, the ability to dynamically generate PDF documents from HTML content is a game changer. Imagine the possibilities of effortlessly transforming dynamic data in the form of interactive reports, professional invoices, or document generation workflows into stunning PDFs. &nbsp; In this blog, our Software Development Engineer, <a class="link" href="https://www.linkedin.com/in/balaji-pandian-905b13a4/">Balaji Pandian</a> will give you step-by-step instructions on how to generate a PDF file from HTML in an iOS app using Swift.&nbsp; To begin with, you must have Xcode installed on your machine, as it serves as the development environment for iOS apps.&nbsp;&nbsp; Let’s get started.&nbsp;<h2 class="heading-node" id="hme28mddg">Step 1: Project Set up&nbsp;</h2><ul class="list-node" id="zg7jdvkxs"><li>Open the Xcode and create a new iOS project.</li><li>Select the "Single View App" template and give your project a suitable name.</li><li>Choose Swift as the programming language and configure the desired options for other project settings.&nbsp;</li><li>&nbsp;After the project is created, navigate to the ViewController.swift file.&nbsp;</li></ul><h2 class="heading-node" id="4yc0san15">Step 2: Import Frameworks&nbsp;&nbsp;</h2>To generate PDF from HTML, we need to import the necessary frameworks. Add the following import statements at the top of ViewController.swift file:<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Screenshot-2023-07-18-at-11.38.22-AM.webp" alt="M2P Fintech" title="" width="100%" height="137"><h2 class="heading-node" id="y1ph15tmb">Step 3: WebView Setup&nbsp;</h2><ul class="list-node" id="v84kzmck1"><li>Create a new class, ViewController, that inherits from UIViewController and adopts the WKNavigationDelegate protocol. This class will handle the generation of the PDF file.</li><li>Inside the ViewController class, override the viewDidLoad() method and perform the following steps:&nbsp;</li></ul><ul class="list-node" id="ztndi0sl0"><li>Create an instance of WKWebView.&nbsp;<ul class="list-node" id="2z01nr0l1"><li>Set the navigationDelegate of the web view to self.&nbsp;</li></ul></li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-41.webp" alt="M2P Fintech" title="" width="100%" height="140"><ul class="list-node" id="chyj4so0r"><li>Drag the Sample Invoice HTML file into the project.</li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-42.webp" alt="M2P Fintech" title="" width="100%" height="550">Initiate the HTML file (Invoice.html) from the bundle and load the WebView request.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Screenshot-2023-07-18-at-11.38.59-AM.webp" alt="M2P Fintech" title="" width="100%" height="142"><h2 class="heading-node" id="y5peyrzg1">Step 4: Generating PDF</h2><ul class="list-node" id="9ty9k7cs1"><li>Implement the webView(:didFinish:) method from the WKNavigationDelegate protocol. This method will be called when the web view finishes loading the JSON string to HTML file content.&nbsp;</li><li>In Swift, the evaluateJavaScript method is used to execute JavaScript code within a WKWebView or WKWebViewConfiguration object. It allows you to interact with the web content loaded in the webView and manipulate it using JavaScript.&nbsp;<ul class="list-node" id="c7580oopd"><li>Pass the webView instance to generatePDF (formatter: UIViewPrintFormatter() method.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Screenshot-2023-07-18-at-11.39.34-AM.webp" alt="M2P Fintech" title="" width="100%" height="637"></li><li>Mapping the JSON string to HTML key value&nbsp;&nbsp;</li></ul></li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-39-1.webp" alt="M2P Fintech" title="" width="100%" height="930"><ul class="list-node" id="p5u3a95y2"><li>Implement the generatePDF method that takes a WKWebView instance and a handler.&nbsp;<ul class="list-node" id="a4ggsobqv"><li>Create an instance of UIPrintPageRenderer&nbsp;</li><li>Add the web view's viewPrintFormatter() to the print page renderer&nbsp;</li><li>Set the paper size and printable area of the PDF&nbsp;</li><li>Create an instance of NSMutableData to store the PDF data&nbsp;</li><li>Initiate the PDF context using UIGraphicsBeginPDFContextToData().&nbsp;</li><li>Iterate over the print page renderer's number of pages and draw each page using UIGraphicsBeginPDFPage() and printPageRenderer.drawPage(at:in:).&nbsp;</li><li>End the PDF context using UIGraphicsEndPDFContext().&nbsp;</li><li>Pass the generated PDF data.&nbsp;</li></ul></li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Screenshot-2023-07-18-at-11.37.56-AM.webp" alt="M2P Fintech" title="" width="100%" height="677"><ul class="list-node" id="lo9g3z837"><li>Implement the savePDFToDisk(pdfData:) method to save the generated PDF data to the device's document directory.&nbsp;<ul class="list-node" id="525ws2f7l"><li>Check if the PDF data is not NIL&nbsp;</li><li>Get the document directory path using NSSearchPathForDirectoriesInDomains().&nbsp;</li><li>Construct the file path for the PDF&nbsp;&nbsp;</li><li>Use pdfData.write(to:) to save the PDF data to the file&nbsp;</li><li>Handle if any errors occur during the file-saving process&nbsp;</li></ul></li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Screenshot-2023-07-18-at-11.40.10-AM.webp" alt="M2P Fintech" title="" width="100%" height="504">To achieve a PDF preview with full view in Swift UI, you can utilize the PDFView class provided by Apple's PDFKit framework.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-38.webp" alt="M2P Fintech" title="" width="100%" height="296">The below figure shows the final output of the conversion of PDF file from HTML format<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/invoice-1.webp" alt="M2P Fintech" title="" width="100%" height="487">By leveraging the WebKit framework, we have successfully achieved the rendering of HTML content within a WKWebView, subsequently converting it into a PDF document.&nbsp; It is important to note that handling error cases and tailoring the code to meet your specific requirements is essential.&nbsp;&nbsp; There are further possibilities to explore and enhance the PDF generation process by:&nbsp;<ul class="list-node" id="5vxn85mom"><li>Empowering users to dynamically customize the HTML content&nbsp;</li><li>Elevating the PDF layout with print page renderer modifications&nbsp;&nbsp;</li><li>Implementing pagination and header/footer support&nbsp;</li></ul>You can also explore and combine various techniques to create unique and compelling PDFs tailored to your specific requirements on the fly. So, dive in, experiment, and explore.&nbsp; Happy coding!&nbsp; Want to know more, reach out to us at <a class="link" href="mailto:business@m2pfintech.com">business@m2pfintech.com.</a>&nbsp;&nbsp; Our team of experts is eager to connect with you.&nbsp; <a class="link" href="https://m2pfintech.com/newsletter/">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox. Follow us on&nbsp;<a class="link" href="https://www.linkedin.com/company/m2pfintech/mycompany/">LinkedIn</a>&nbsp;and&nbsp;<a class="link" href="https://twitter.com/m2pfintech">Twitter</a> for insightful fintech bytes curated for curious minds like you.

How to Generate PDFs from HTML in iOS using Swift UIKit

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Blog-01-4.webp" alt="M2P Fintech" title="" width="100%" height="531">We live in a world of <a class="link" href="https://m2pfintech.com/blog/super-apps-in-consumer-banking-what-role-does-open-banking-play/">super apps</a>, where data protection must be prioritized above everything. Safeguarding mobile app information from unauthorized access is imperative to prevent cyber-attacks.&nbsp;<h2 class="heading-node" id="iptpr69rj" style="text-align: justify">AES and ECDH&nbsp;</h2>To address security challenges, advanced encryption and decryption mechanisms must be integrated into the Android applications. By implementing robust encryption algorithms such as AES (Advanced Encryption Standard), and incorporating secure key exchange protocols like the Elliptic Curve Diffie-Hellman (ECDH) algorithm, developers can fortify their apps against potential breaches. &nbsp;The ECDH algorithm ensures sensitive data is protected from unauthorized access, enhancing the overall security of applications. This advanced process creates a trusted and secure environment for seamless data transmission. &nbsp;In this blog, our Code Specialist and Lead Software Development Engineer <a class="link" href="https://www.linkedin.com/in/janarthanan-radhakrishnan-b6933b118">Janarthanan</a>, will guide you through the intricate world of encryption and decryption logic using AES. With his expertise, you can understand how this cutting-edge technology seamlessly integrates into the Android app, providing a robust shield for sensitive data with utmost ease and efficiency.&nbsp;To start off, let’s understand cryptographic algorithms. &nbsp;<h2 class="heading-node" id="wb39lawnc" style="text-align: justify">What is a Cryptographic Algorithm?&nbsp;</h2>Cryptographic algorithms (also known as encryption algorithms) are mathematical formulas that define how the encryption and decryption processes are carried out. They define specific steps and operations involved in transforming the data and play a crucial role in the security of encryption systems. The figure below depicts the processes of encryption and decryption, which work together to ensure the confidentiality and integrity of data. &nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Blog-02-1.webp" alt="M2P Fintech" title="" width="100%" height="531">Cryptographic algorithms significantly impact the level of security, performance, and compatibility of the encryption and decryption processes. Now, let's explore AES algorithms, our superhero of data security.<h2 class="heading-node" id="foloj6te0" style="text-align: justify">Advanced Encryption Standard (AES)&nbsp;</h2>AES acts as a powerful shield that ensures personal data remains confidential and protected. It is commonly used to secure sensitive data such as credit card numbers, passwords, and personal data. It is also used in different applications, including SSL/TLS encryption for web traffic, disk encryption, and email encryption.Let’s explore the different modes of AES.&nbsp;<h3 class="heading-node" id="bkmq1255i" style="text-align: justify">Modes of AES&nbsp;</h3>When it comes to securing data with Advanced Encryption Standard, different modes can be used. Each mode offers unique characteristics and serves specific purposes in securing sensitive data. &nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/Blog-03-1.webp" alt="M2P Fintech" title="" width="100%" height="531">Let’s briefly look at each of the modes before into AES implementation.&nbsp;<h4 class="heading-node" id="f2ir19hck" style="text-align: justify">Electronic Code Book (ECB)&nbsp;</h4>Electronic Code Book (ECB) mode independently encrypts fixed-size blocks of plaintext using the same key, which can lead to vulnerabilities. It is not suitable for encrypting large amounts of data or high-security scenarios. Therefore, it is generally not recommended for most encryption purposes.&nbsp;<h4 class="heading-node" id="t63ath78e" style="text-align: justify">Cipher Block Chaining (CBC)&nbsp;</h4>Cipher Block Chaining (CBC) mode enhances security by incorporating an Initialization Vector (IV). The IV is the same size as the encrypted block and adds an element of randomness to the encryption process. To ensure cryptographic security, each encryption of the same plaintext should produce a different ciphertext.&nbsp;<h4 class="heading-node" id="nh0hghn4a" style="text-align: justify">Cipher Feedback (CFB)&nbsp;</h4>The Cipher Feedback (CFB) mode of operation can use a block encryptor as a stream cipher. Like other modes, it requires an initialization vector (IV). In CFB mode, the IV is first encrypted and then XORed with the plaintext block to generate the corresponding ciphertext. This process is repeated for each subsequent block, where the previous encryption result is encrypted and XORed with the next plaintext block.&nbsp;<h4 class="heading-node" id="fx050wp5g" style="text-align: justify">Output Feedback (OFB)&nbsp;</h4>The Output Feedback (OFB) mode of operation allows a block encryptor to function as a stream encryptor without requiring any padding data. In OFB mode, the initialization vector (IV) is encrypted initially, and the resulting encryption is then used to XOR with the plaintext to generate the corresponding ciphertext. This process is repeated for each subsequent block, where the previous encryption results are continuously encrypted and XORed with the next plaintext block. Additionally, the encryption and decryption of the IV cannot be performed in parallel in this mode.&nbsp;<h4 class="heading-node" id="mz2y4f5r9" style="text-align: justify">Counter (CTR)&nbsp;</h4>The Counter (CTR) mode of operation uses a counter as the input block for the encryptor. The counter is of the same size as the block being used. In CTR mode, the encryptor generates a keystream by encrypting the counter value using the encryption key. This keystream is then XORed with the corresponding plaintext block to produce the ciphertext. Importantly, each encryption block in CTR mode utilizes the same encryption key, ensuring consistency throughout the encryption process.&nbsp;<h4 class="heading-node" id="xlyf8ecqs" style="text-align: justify">Galois Counter Mode (GCM)</h4>The Galois Counter Mode (GCM) is a powerful encryption mode that combines the Counter (CTR) mode with authentication mechanisms. It offers enhanced speed and security thanks to its efficient implementation of table-driven field operations. GCM is primarily used for authenticated encryption, providing confidentiality and authenticity for the encrypted data. It also ensures authenticity for the additional authenticated data (AAD) associated with the encrypted data. It's important to note that the AAD is not encrypted but still benefits from the authentication mechanisms provided by GCM.&nbsp;When it comes to client-server communication, it is essential to prioritize security. Hackers can easily exploit simple requests during transmission. Let us now look at code implementation in GCM.&nbsp;<h3 class="heading-node" id="wphhfliz1" style="text-align: justify">Code Implementation Steps in GCM&nbsp; &nbsp;&nbsp;</h3>When implementing the code, the first step is to Open Android Studio. Once we have Android Studio up and running, the next step is to set up the Gradle build system.&nbsp;&nbsp;<h4 class="heading-node" id="452izau5l" style="text-align: justify">Gradle Setup&nbsp;</h4>Gradle is an essential component that helps manage dependencies and build configurations for our Android app.&nbsp;In the Gradle first, the Spongy Castle dependency file is added in the build. Gradle. &nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-30.webp" alt="M2P Fintech" title="" width="100%" height="194">Let’s see the steps involved!&nbsp;&nbsp;<h4 class="heading-node" id="7780raqib" style="text-align: justify">Step 1: Generate Key Pair&nbsp;</h4>The first step is to generate the Key Pair.&nbsp;&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-36.webp" alt="M2P Fintech" title="" width="100%" height="276"><h4 class="heading-node" id="7rg6q5jxl" style="text-align: justify">Step 2: Generate Private Key&nbsp;</h4>The private key in cryptography is called symmetrical because it involves a single secret key for encryption and decryption. Compared to public-key cryptography, which involves two separate keys (public and private), the symmetrical approach offers faster encryption and decryption processes. To ensure secure communication, both the sender and receiver must possess and use the same private key, making it a crucial component in algorithms like AES 128, AES 192, and AES 256, which enhance the overall robustness of data encryption and decryption. &nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-37.webp" alt="M2P Fintech" title="" width="100%" height="164"><h4 class="heading-node" id="qx6vhhl7v" style="text-align: justify">Step 3: Generate Public Key&nbsp;</h4>The public key in cryptography operates on an asymmetrical principle as it involves two distinct keys: private and public keys. Unlike the private key, the public key is used for encryption, while the private key is used for decryption. Due to its inherent nature, public key cryptography tends to be slower than symmetrical private key cryptography. Algorithms like RSA, DSA, and others use the public key for secure encryption processes, ensuring the confidentiality and integrity of data.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-32.webp" alt="M2P Fintech" title="" width="100%" height="130"><h4 class="heading-node" id="85zwautk9" style="text-align: justify">Step 4: Need Exchange Server Public Key&nbsp;</h4>To establish secure communication with a web service, it is essential to transmit our public key. Once the web service validates the received public key, it will respond by providing its own public key. This server public key is crucial in generating a secret key for further cryptographic operations. &nbsp;<h4 class="heading-node" id="26qgwpzzk" style="text-align: justify">Step 5: Generate Secret Key before Data Encryption&nbsp;&nbsp;</h4>In secret key encryption, the key used for encryption and decryption remains the same. As a result, ensuring the proper safeguarding and distribution of this key becomes crucial.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-33.webp" alt="M2P Fintech" title="" width="100%" height="287"><h4 class="heading-node" id="n2pai8z03" style="text-align: justify">Step 6:&nbsp; Encrypt the Data&nbsp; </h4>Encryption is a crucial process in data security, transforming a normal message (plaintext) into a meaningless form (ciphertext). Its primary objective is to convert plain text into a complex and unreadable format, ensuring that the original message becomes inaccessible to anyone without the decryption key. The output of encryption is a ciphertext, which appears as a series of scrambled characters to unauthorized individuals.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-34.webp" alt="M2P Fintech" title="" width="100%" height="403"><h4 class="heading-node" id="kcla3xod4" style="text-align: justify">Step 7:&nbsp; Decrypt the Data&nbsp;</h4>Decryption plays a vital role in data security by reversing the encryption process and converting a meaningless message (ciphertext) back into its original form (plaintext). Its primary objective is to convert the cipher text into plain text. Decryption reverses the encryption process and converts the ciphertext back into plaintext.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/07/MicrosoftTeams-image-35.webp" alt="M2P Fintech" title="" width="100%" height="382">The integration of encryption and decryption logic using AES in Android apps has ushered in a new era of data security and confidentiality. By leveraging the power of this advanced cryptographic algorithm, developers can ensure that sensitive information remains protected and inaccessible to unauthorized entities.&nbsp;Want to know more about enhancing Android app security?&nbsp;Reach out to us at <a class="link" href="mailto:business@m2pfintech.com">business@m2pfintech.com.</a>&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://m2pfintech.com/newsletter/" target="_blank" rel="noreferrer noopener">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox.Follow us on&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://www.linkedin.com/company/m2pfintech/mycompany/" target="_blank" rel="noreferrer noopener">LinkedIn</a>&nbsp;and&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://twitter.com/m2pfintech" target="_blank" rel="noreferrer noopener">Twitter</a> for insightful fintech bytes curated for curious minds like you.

How to Secure an Android App with AES

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/Android-SDK-Integration-Blog-Banner-Design-01-2.webp" alt="M2P Fintech" title="" id="8wwgsm7pp" width="100%" height="358">Flutter combines the best features from native and hybrid application development approaches.&nbsp; Instead of developing separate apps for platforms such as Android, iOS, Windows, and Linux, Flutter allows developers to build once and deploy across multiple platforms.&nbsp; But how can developers tap into native platform features and integrate robust SDKs?&nbsp; Enter the Method Channel Method Channel acts as a powerful communication mechanism between Flutter and the native platform, opening a world of possibilities for an app. By leveraging the Method Channel, a developer can seamlessly integrate iOS and Android SDKs into their Flutter project, unlocking new functionalities and expanding their app's potential.&nbsp; In this blog, our developer <a class="link" href="https://www.linkedin.com/in/alwin-s-699a47145/">Alwinraj Sahayaraj </a>delves into the exciting world of SDK integration in Flutter using Method Channels. He will guide you through the process of integrating SDKs, accessing native functionalities, and creating a seamless bridge between Flutter and the native platform.&nbsp; Let's start with what an SDK is.&nbsp;<h2 class="heading-node" id="q0pkxgv2y" style="text-align: justify">What is SDK?&nbsp;</h2>Software Development Kit (SDK) or devkit is a set of software tools and programs that developers use to create applications for specific platforms.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/Android-SDK-Integration-Blog-Banner-Design-05.webp" alt="M2P Fintech" title="" width="100%" height="348">SDK is like a magical toolbox that comprises everything a developer needs to bring their app ideas to life on a particular platform. This toolbox includes libraries, documentation, code samples, processes, and guides that developers can use and integrate into their own apps.&nbsp;&nbsp; SDKs are created to be used for particular platforms or programming languages.&nbsp; When developing an Android application, you would require an Android SDK toolkit, while an iOS SDK would be necessary for building an iOS app. &nbsp; Similarly, a VMware SDK would be essential if you intend to integrate with the VMware platform. Likewise, a Nordic SDK would be the appropriate choice for developing bluetooth or wireless products. The specificity of SDKs ensures developers have the tools tailored to their intended platform or technology.&nbsp; Now, let’s see how SDK is integrated into Flutter.&nbsp;&nbsp;<h2 class="heading-node" id="3jyfvdfuq" style="text-align: justify">SDK Integration into Flutter&nbsp;</h2>SDK integration in Flutter involves integrating external development kits into your Flutter project. These SDKs are pre-built libraries or tools offering additional features or services not native to the Flutter framework. &nbsp; They are developed in different programming languages like Dart, Swift, Objective-C, Java, or Kotlin. Incorporating these SDKs into your Flutter project allows you to access extended functionality and leverage existing libraries and tools to enhance your app development process.&nbsp; SDK integration enables you to create a feature-rich, dynamic, and user-friendly app. Built on multiple programming languages, they are compatible with different platforms.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/Android-SDK-Integration-Blog-Banner-Design-04-1.webp" alt="M2P Fintech" title="" width="100%" height="358">SDK integration in Flutter enables developers to leverage native platform features, tap into third-party services, and extend the capabilities of their applications. It empowers developers to improve user experience and accelerate the development process by leveraging the power of tailored SDKs.&nbsp; Some everyday use cases of SDK integration in Flutter include the following.&nbsp;<h3 class="heading-node" id="1rl0ilk7q" style="text-align: justify">Native Functionality Interaction&nbsp;</h3>Flutter offers a robust platform channel mechanism that facilitates seamless communication between Flutter and the native iOS or Android platform. By integrating SDKs, developers can interact with device-specific functionalities like the camera, GPS, sensors, Bluetooth, and other native APIs.&nbsp;<h3 class="heading-node" id="gvkzzp708" style="text-align: justify">Third-Party Service Access&nbsp;</h3>Numerous SDKs provide consistent integrations with widely used third-party services, including analytic platforms, push notification services, authentication providers, payment gateways, and social media networks. By integrating these SDKs into your Flutter app, you can effortlessly incorporate these essential services, enabling features such as user analytics, real-time notifications, secure authentication, streamlined payments, and seamless social media integration.&nbsp;<h3 class="heading-node" id="dbnbidppe" style="text-align: justify">Readymade UI Components&nbsp;&nbsp;</h3>Specific SDKs offer ready-made UI components that can be integrated into your Flutter app, saving valuable time and effort. These pre-built components enable you to swiftly achieve desired designs or functionalities without creating them from scratch. By leveraging these UI components, you can expedite the development process, enhance the visual appeal of your app, and ensure consistency across different screens and interactions.&nbsp;<h3 class="heading-node" id="diq0c199q" style="text-align: justify">Optimize Performance&nbsp;&nbsp;</h3>SDK integration geared towards performance optimization can significantly boost the overall performance, reduce network usage or improve the overall rendering efficiency of your app. You can optimize various aspects of your app's functionality by integrating performance-focused SDKs, such as image processing libraries, networking libraries, or caching mechanisms.&nbsp;<h3 class="heading-node" id="wywpa3xti" style="text-align: justify">Monetization Opportunities&nbsp;&nbsp;</h3>SDK integration with advertising networks or in-app monetization platforms offers a seamless solution to incorporate various monetization strategies into your app. By integrating these SDKs, you can display targeted ads, track important metrics such as ad impressions and revenue, and implement in-app purchases and subscriptions seamlessly.&nbsp; One of the most effective ways to achieve seamless SDK integration in Flutter is using Method Channels. &nbsp;<h2 class="heading-node" id="cesqxp4wy" style="text-align: justify">What is Method Channel &amp; how it is used in SDK integration?&nbsp;</h2>The Method Channel is like a virtual bridge that connects your Flutter app with the native platform, whether it's Android or iOS.&nbsp;&nbsp; Using the Method Channel, you can invoke platform-specific code from your Flutter app and receive the corresponding results. This bidirectional communication mechanism facilitates data exchange and functionality between Flutter and the native platform.&nbsp; &nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/Android-SDK-Integration-Blog-Banner-Design-06.webp" alt="M2P Fintech" title="" width="100%" height="360">Within the Flutter/services package, you'll find the Method Channel class, crucial in establishing a communication channel between your Flutter app and the native platform. This channel facilitates the invocation of methods and the handling of results, enabling seamless interaction between Flutter and the underlying native platform.&nbsp; Let's see how the code is integrated into Flutter. To integrate SDKs using Method Channels in Flutter, there are a few steps to be followed on both the Flutter side and the native (Android and iOS) platform side.&nbsp;&nbsp; First, let’s see the flutter side.&nbsp;<h2 class="heading-node" id="iah66oac6" style="text-align: justify">Flutter&nbsp;</h2>To use the Method Channel in Flutter for SDK integration, here is the fundamental structure for creating and invoking a Method Channel in Flutter and iOS.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-15.webp" alt="M2P Fintech" title="" width="100%" height="508"><h2 class="heading-node" id="v9wvbfq7n" style="text-align: justify">Native (Android + iOS)</h2>On the native side (iOS), specifically inside the AppDelegate file, you would typically implement the Method Channel functionality. This is where you handle method invocations from the Flutter app and establish communication between Flutter and the iOS platform.&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-18.webp" alt="M2P Fintech" title="" width="100%" height="1422">The following is the basic structure for creating and invoking a Method Channel in Flutter and iOS:&nbsp;<h2 class="heading-node" id="oo9beyl71" style="text-align: justify">Android&nbsp;</h2>On the Android native side (MainActivity.kt), you can set up the Method Channel.<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-20.webp" alt="M2P Fintech" title="" width="100%" height="84">To integrate the SDK on the Android side, you need to perform the following steps:&nbsp; Step 1: Add the AAR file to your project: Navigate to the project directory: Project → android → app → lib (create the "lib" directory if it doesn't exist).&nbsp; Place the AAR file inside the "lib" directory&nbsp; Step 2: Modify the build.gradle file (app level):&nbsp; Open the build.gradle file located at: Project → android → app → build.gradle.&nbsp; Step 3:&nbsp; And need to add the required dependencies for SDK integration (mentioned in the SDK documents)&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-16.webp" alt="M2P Fintech" title="" width="100%" height="731">You will need to do the following to incorporate this functionality into your Flutter app.&nbsp; Step 1: Review the SDK Integration Document provided by the SDK developer before proceeding with the implementation. This document contains essential information and instructions on how to integrate the SDK into your application effectively.&nbsp; Step 2: If the SDK Integration Document specifies any required API calls and data retrieval, it is essential to follow those instructions. These API calls will enable you to fetch the necessary data to be passed as arguments to the SDK integration scenario.&nbsp; Step 3: To pass values from Flutter to iOS after retrieving them via an API call, you need to write an API call function in Flutter. This function will make the necessary HTTP requests and fetch the required data. Once the data is obtained, you can pass it as arguments to the SDK integration in Flutter. These arguments will be subsequently sent from Flutter to the iOS platform.&nbsp; By following these steps and carefully reviewing the SDK Integration Document, you can successfully incorporate the required API calls and data retrieval processes into your Flutter app, ensuring smooth integration with the SDK.&nbsp; So, whether you're a seasoned developer or just starting your Flutter journey, don't hesitate to explore the vast world of SDKs and the Method Channel.&nbsp;&nbsp; Happy Coding and Integrating&nbsp; Do you have any questions or suggestions?&nbsp; Write to us at <a class="link" href="mailto:business@m2pfintech.com">business@m2pfintech.com</a>. Our expert team will be happy to assist you.&nbsp; <a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://m2pfintech.com/newsletter/" target="_blank" rel="noreferrer noopener">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox. Follow us on&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://www.linkedin.com/company/m2pfintech/mycompany/" target="_blank" rel="noreferrer noopener">LinkedIn</a>&nbsp;and&nbsp;<a class="link fui-Link ___1idfs5o f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq f17ae5zn" href="https://twitter.com/m2pfintech" target="_blank" rel="noreferrer noopener">Twitter</a> for insightful fintech bytes curated for curious minds like you.

Power up Flutter with SDK Integration using Method Channel

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-19.webp" alt="M2P Fintech" title="" width="100%" height="358">Aadhaar data needs to be treated securely. According to the RBI and Government of India mandate, organizations that collect and store identity details must mask the first 8 digits of the Aadhaar number and reveal only the last 4 for security and compliance. Whether it's for government subsidies, income tax filing, or opening bank accounts, Aadhaar numbers must be validated and masked.&nbsp; <a class="link" href="https://m2pfintech.com/blog/edo-suite-mask-aadhaar-in-an-instant-the-right-way/">Aadhaar masking tools</a>&nbsp;use Verhoeff algorithm, a checksum algorithm to validate, detect errors and ensure the integrity of the masked Aadhaar number. At M2P, we implemented Verhoeff algorithm on <a class="link" href="https://m2pfintech.com/blog/the-implications-of-flutter-in-fintech/">Flutter.</a> Wonder how?&nbsp;&nbsp; Our engineer, <a class="link" href="https://www.linkedin.com/in/nandhakumar-k-14828813a/">Nandhakumar Krishnan,</a> delves deep into the step-by-step implementation of the Verhoeff algorithm in Flutter, which guarantees the authenticity of these crucial identification numbers. &nbsp;&nbsp; Before we embark on the journey, it's important to understand the relationship between Aadhaar numbers and Verhoeff algorithm.&nbsp;<h2 class="heading-node" id="vuzgmdwit" style="text-align: justify">Aadhaar Number and Verhoeff Algorithm</h2>Aadhaar numbers are generated by the Unique Identification Authority of India (UIDAI) and are linked to an individual's biometric and demographic information, including fingerprints, iris scans, and photographs.&nbsp;The Aadhaar number comprises 12 digits, out of which 11 digits are uniquely generated, and the last digit is the checksum.&nbsp;&nbsp; The checksum is derived from the Verhoeff algorithm using a series of mathematical calculations. The result of these calculations is used to determine the appropriate checksum digit. By appending the checksum digit to the 11-digit portion of the Aadhaar number, the Verhoeff algorithm enables easy detection of errors or discrepancies that occurs during data entry or transmission. If any of the digits are altered, the resulting Aadhaar number will fail the checksum validation.&nbsp;<h2 class="heading-node" id="ba2ymaxxe" style="text-align: justify">How to Implement the Verhoeff Algorithm?</h2>To begin implementing check digit algorithms, it is necessary to create an abstract class as a foundation for the process. This abstract class will serve as a basis for incorporating the Verhoeff algorithm and its functionality within the code.&nbsp;<h3 class="heading-node" id="ofatx47uq" style="text-align: justify">The abstract class&nbsp;&nbsp;</h3><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-15-1.webp" alt="M2P Fintech" title="" width="100%" height="329"><ul class="list-node" id="vybjsesus"><li>In order to proceed, it is important to consider the multiplication table, permutation table, and the inverse table.&nbsp;</li><li>This table is based on multiplication in the dihedral group D5 and is simply the Cayley table of the group.&nbsp;</li></ul>Note: This group is not commutative, i.e., for some values of j and k, d(j,k) != d(k, j).&nbsp;<h3 class="heading-node" id="34hzoigau" style="text-align: justify">The multiplication table&nbsp;</h3><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-16-1.webp" alt="M2P Fintech" title="" width="100%" height="329"><ul class="list-node" id="vjitqhkix"><li>In the inverse table, ‘inv’ represents the multiplicative inverse of a digit, i.e., the value that satisfies d(j, inv(j)) = 0.&nbsp;</li></ul><h3 class="heading-node" id="hou5ebcnk" style="text-align: justify">The inverse table</h3><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-17-1.webp" alt="M2P Fintech" title="" width="100%" height="91"><ul class="list-node" id="oyyt75fzn"><li>In the permutation table, p applies a permutation to each digit based on its position in the number.&nbsp;</li><li>p(pos,num)&nbsp;</li><li>This is a single permutation (1 5 8 9 4 2 7 0)(3 6) applied iteratively; i.e., p(i+j,n) = p(i, p(j,n)).&nbsp;</li></ul><h3 class="heading-node" id="avp8mfh7v" style="text-align: justify">The permutation table&nbsp;</h3><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-18-1.webp" alt="M2P Fintech" title="" width="100%" height="284">Next, we must compute the Verhoeff checksum formula.&nbsp;<h3 class="heading-node" id="tl7qvwiot" style="text-align: justify">Generating the checksum formula</h3><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-19-2.webp" alt="M2P Fintech" title="" width="100%" height="616"><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-27.webp" alt="M2P Fintech" title="" width="100%" height="556"> &nbsp; The above snippet generates a checksum for the given Aadhaar number. The validate function then verifies that the checksum matches the last digit of the Aadhaar number. If they are the same, then the Aadhaar number is considered valid.&nbsp;<h2 class="heading-node" id="kgk26r6mb" style="text-align: justify">Implementing the Verhoeff Algorithm in Flutter&nbsp;</h2>To implement the Verhoeff algorithm in your Flutter application, follow these steps:&nbsp; Step 1: Import the Verhoeff algorithm class&nbsp;<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-28.webp" alt="M2P Fintech" title="" width="100%" height="162">Step 2: Validate and check the digit of the user provided Aadhaar number Note: Ensure that the user inputs a number without any spaces or characters.&nbsp; The Verhoeff algorithm computes the checksum and validates the input Aadhaar number.&nbsp;&nbsp; If the computed checksum matches the last digit of the Aadhaar number, it means that the number is validated.&nbsp;<h2 class="heading-node" id="vill8wfzc" style="text-align: justify">Indispensable Layer of Security&nbsp;</h2>The Verhoeff algorithm prevents manual errors and ensures the integrity of Aadhaar numbers. This implementation adds an extra layer of protection and reliability when handling Aadhaar numbers, contributing to the overall authenticity of this vital identification system.&nbsp; The use case of the algorithm is not limited to Aadhaar numbers alone. It can be used to validate credit card numbers, phone numbers, and product codes, making it an essential tool in today's data-driven world.&nbsp; Want to know about Aadhaar validation and masking?&nbsp;&nbsp; Get in touch with us at <a class="link" href="mailto:business@m2pfintech.com">business@m2pfintech.com</a>&nbsp; <a class="link fui-Link ___1qmgydl f3rmtva f1ewtqcl fyind8e f1k6fduh f1w7gpdv fk6fouc fjoy568 figsok6 f1hu3pq6 f11qmguv f19f4twv f1tyq0we f1g0x7ka fhxju0i f1qch9an f1cnd47f fqv5qza f1vmzxwi f1o700av f13mvf36 f1cmlufx f9n3di6 f1ids18y f1tx3yz7 f1deo86v f1eh06m1 f1iescvh ftqa4ok f2hkw1w fhgqx19 f1olyrje f1p93eir f1h8hb77 f1x7u7e9 f10aw75t fsle3fq" href="https://m2pfintech.com/newsletter/" target="_blank" rel="noreferrer noopener">Subscribe</a>&nbsp;to our newsletter and get the latest fintech news, views, and insights, directly to your inbox. 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Validate Aadhaar numbers using the Verhoeff Algorithm in Flutter

<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/CI-CD-Banner-1.webp" alt="M2P Fintech" title="" width="100%" height="253">Fixing a critical bug in your code can save the integrity of your project.&nbsp;&nbsp;What is equally important is continuously improving the quality of the code, testing, and automating it for new release. Developers must make sure they follow all these processes while seamlessly communicating the changes with their team members.&nbsp;&nbsp;That’s why development teams across the world practice a mechanism called Continuous Integration (CI) and Continuous Delivery (CD).&nbsp;Starting from generating a build using command line, uploading build to test flight using fast lane, interfacing Jenkins with bitbucket and Fastlane, CICD mechanism can simplify and automate the process of build generation for iOS developers.&nbsp;We are coming up with a 3-part series covering the A-Z of deploying CI/CD mechanism for automating build generation.&nbsp;&nbsp;In this blog, we will be talking about generating a local build using command line.&nbsp;Let’s dive in.&nbsp;This blog is written by <a class="link" href="https://www.linkedin.com/in/ranjith-ravichandran-73829793/">Ranjith Ravichandran</a>, Senior SDE, Product Engineering at M2P.&nbsp;<h2 class="heading-node" id="vixdomkir" style="text-align: justify">What is CI/CD?&nbsp;</h2>Continuous Integration is the practice of merging code changes to a shared repository many times a day. It includes automated building generation and testing. &nbsp;Continuous Delivery is continuous integration with additional processes which allows application release to the customers after each change or update. &nbsp;&nbsp;<h2 class="heading-node" id="gf7yuvxyf" style="text-align: justify">Why CI/CD?&nbsp;</h2>Continuous integration and continuous delivery (CI/CD) is a critical component of agile software development, which emphasizes the importance of delivering working software to users quickly and frequently. This allows stakeholders and users to access newly created features and provide feedback as soon as possible, so features can be iteratively improved.&nbsp;CI/CD is a valuable tool for software developers, regardless of the size of their team. For solo developers, CD may be even more important, as it can help to ensure that software is delivered to users quickly and reliably.&nbsp;In this blog, we will show you the behind the scenes of building, testing, archiving, and uploading an iOS application. Being aware of the native Apple developer tools and learning command line interaction is integral for anyone using CI/CD mechanism.&nbsp;Command line interactions can help you with the following.&nbsp;<ul class="list-node" id="pte7t3cwf"><li>Understanding apple technologies used for building and deploying an iOS application&nbsp;</li><li>Automating iOS development task for continuous integration or cloud-based servers&nbsp;</li><li>Understanding the background working of tools like <a class="link" href="https://fastlane.tools/">Fastlane</a>&nbsp;</li></ul><h2 class="heading-node" id="k829yqqxm" style="text-align: justify">Automating Build Generation – Overall Process</h2><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/CI-CD-img1.webp" alt="M2P Fintech" title="" width="100%" height="253"><ul class="list-node" id="2rh1i4is1"><li>Setting up the project and creating a repository in Bit Bucket&nbsp;</li><li>Connecting local Jenkins with Bit Bucket cloud to check out as project branch (to build as an IPA)&nbsp;</li><li>Connecting Jenkins and Fastlane for building and archiving the project</li><li>Moving the archived IPA to TestFlight from Fastlane</li></ul><h2 class="heading-node" id="718gbf2sl" style="text-align: justify">Build Generation using Command Line</h2><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/CI-CD-img2.webp" alt="M2P Fintech" title="" width="100%" height="261">Let’s assume that a project is developed by multiple engineers where they all must perform the following.&nbsp;<ul class="list-node" id="8xgwyb9oq"><li>Checking out the project from Bit Bucket to local system&nbsp;</li><li>Archiving the particular branch of the project using command line&nbsp;</li></ul>After following the above processes, the IPA is generated inside the project folder.&nbsp; To understand the command line deployment process, we should have the following things set up in advance before starting the build generation. &nbsp;<h2 class="heading-node" id="wl1vjw4rj" style="text-align: justify">Pre-requisites</h2><ul class="list-node" id="zxps2bfin"><li>Sample app with Xcode workspace - e.g., FintechBase.xcworkspace &nbsp;</li><li>Xcode Scheme with Release configuration - e.g., Developement &nbsp;</li></ul><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-3.webp" alt="M2P Fintech" title="" width="100%" height="270"><ul class="list-node" id="yyqu3ol0l"><li>Certificates, AppID, Provisioning profiles setup for production in iTunes Connect - Use <a class="link" href="https://help.apple.com/xcode/mac/current/#/dev60b6fbbc7">Apple’s documentation</a> for setting up&nbsp;</li><li>macOS with Distribution certificate in the keychain &nbsp;</li></ul><h3 class="heading-node" id="8sncc4746" style="text-align: justify">Analyzing &nbsp;</h3>We perform static analysis of the source code. The xcodebuild has the ability to clean and analyze the source code for any common syntax errors. &nbsp;<h3 class="heading-node" id="ceoujw6ub" style="text-align: justify">Code for analyzing the project using the terminal&nbsp;&nbsp;</h3>xcodebuild - workspace FintechBase.xcworkspace -scheme Development -sdkiphonesimulator10.3 clean analyze &nbsp;<h3 class="heading-node" id="kfx4bsyjr" style="text-align: justify">Building &nbsp; &nbsp;</h3>We can build an iOS app using xcodebuild ‘build’ action which can generate the derived data for our iOS app. Once the application is built, it can run inside the simulator or can be used by the test bundle. &nbsp;<h3 class="heading-node" id="2l3qqcg9r" style="text-align: justify">Build for running &nbsp;</h3>We can simply build our app to run inside simulators by using the command &nbsp;xcodebuild -workspace FintechBase.xcworkspace -scheme Development -configuration Release -allowProvisioningUpdates build &nbsp;<h3 class="heading-node" id="qpt6jm8bp" style="text-align: justify"> Archiving </h3>Most of the iOS engineers face difficulties in archiving an iOS application as it deals with provisioning profiles, certificates, and build configurations.&nbsp;To upload an app to iTunes Connect or deploy it on to the provisioned devices, we need to build an app for generic iOS device destination as well as export it in the IPA format. &nbsp;Next step is building our application with release configuration scheme ‘Development’ with generic iOS device destination. &nbsp; &nbsp;There are two steps involved.&nbsp;<ul class="list-node" id="lt01qgpu1"><li>Building an archive with xcodebuild archive &nbsp;</li><li>Creating the .ipa file with xcodebuild -exportArchive &nbsp;</li></ul><h4 class="heading-node" id="uimw8zxqa" style="text-align: justify">Without Team ID &nbsp;</h4>xcodebuild archive -workspace FintechBase.xcworkspace -scheme Development clean build archive  -archivePath ./build/FintechBase.xcarchive &nbsp;<h4 class="heading-node" id="lw00yqpeu" style="text-align: justify">With Team ID &nbsp;</h4>xcodebuild archive -workspace FintechBase.xcworkspace -scheme Development DEVELOPMENT_TEAM="XXXXXXXXXX" -allowProvisioningUpdates  -archivePath ./build/FintechBase.xcarchive &nbsp;<h4 class="heading-node" id="b1r52lons" style="text-align: justify">Note&nbsp;</h4><ul class="list-node" id="r267dseji"><li>The build is created using the above command build/FintechBase.xcarchive&nbsp;</li><li>Replace ‘XXXXXXXXX’ with your team ID&nbsp;</li></ul>We now export the .ipa using the command&nbsp;xcodebuild -exportArchive -allowProvisioningUpdates -archivePath  ./build/FintechBase.xcarchive -exportPath ./build/ -exportOptionsPlist ./build/ExportOptions.plist &nbsp;Note that the above command requires a ExportOptions argument that points to a .plist file with export options. For a complete list of what you can put in that plist, run xcodebuild -help.&nbsp;&nbsp;Create build folder in a project and add ExportOptions.plist<img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-1-1.webp" alt="M2P Fintech" title="" width="100%" height="530"><h4 class="heading-node" id="q4fzt0obs" style="text-align: justify">Find the sample code for ExportOptions</h4><img src="https://m2p-website-file.s3.ap-south-1.amazonaws.com/m2p-website-file/marketing-cms/m2p-blog/2023/06/MicrosoftTeams-image-2-1.webp" alt="M2P Fintech" title="" width="100%" height="199">&lt;?xml version="1.0" encoding="UTF-8"?&gt; &nbsp;&lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN""<a class="link" href="http://www.apple.com/DTDs/PropertyList-1.0.dtd">http://www.apple.com/DTDs/PropertyList-1.0.dtd</a>"&gt; &nbsp;&lt;plist version="1.0"&gt; &nbsp;&lt;dict&gt; &nbsp;&lt;key&gt;generateAppStoreInformation&lt;/key&gt; &nbsp;&lt;false/&gt; &nbsp;&lt;key&gt;manageAppVersionAndBuildNumber&lt;/key&gt; &nbsp;&lt;true/&gt; &nbsp;&lt;key&gt;method&lt;/key&gt; &nbsp;&lt;string&gt;app-store&lt;/string&gt; &nbsp;&lt;key&gt;signingStyle&lt;/key&gt; &nbsp;&lt;string&gt;automatic&lt;/string&gt; &nbsp;&lt;key&gt;stripSwiftSymbols&lt;/key&gt; &nbsp;&lt;true/&gt; &nbsp;&lt;key&gt;teamID&lt;/key&gt; &nbsp;&lt;string&gt;XXXXXXXXXX&lt;/string&gt; &nbsp;&lt;key&gt;uploadSymbols&lt;/key&gt; &nbsp;&lt;true/&gt; &nbsp;&lt;/dict&gt; &nbsp;&lt;/plist&gt; &nbsp; &nbsp;<h4 class="heading-node" id="ga13psli6" style="text-align: justify">Export Options</h4><ul class="list-node" id="kmyta6keu"><li>method: (String) The method of distribution, which can be set as any of the following: <ul class="list-node" id="vjjzjfgiv"><li>app-store &nbsp;</li><li>enterprise &nbsp;</li><li>ad-hoc </li><li>development &nbsp;</li></ul></li></ul><ul class="list-node" id="6jmqzfr7a"><li>teamID: (String) The development program team identifier. </li><li>signingtyle: (String) Automatic Signing “automatic”, incase of manual signing mention “manual” add provisioningProfiles and signingCertificate </li><li>uploadBitcode: (Boolean) Option to include Bitcode. </li><li>manageAppVersionAndBuildNumber: to ensure that you have already updated your version/build number before archiving</li><li>generateAppStoreInformation: For App Store exports, should Xcode generate App Store Information for uploading with iTMSTransporter. Defaults to NO </li><li>uploadSymbols: Should symbols be stripped from Swift libraries in your IPA. Defaults to YES</li></ul> &nbsp;After successfully running the command, the ipa file will be generated inside the build folder in the name of FintechBase.ipa&nbsp;The next step involves automating the build generation using Fastlane and pushing it to TestFlight which we will be covering in the next blog.&nbsp;Till then, Stay tuned!&nbsp;Have any questions/suggestions?&nbsp;&nbsp;&nbsp;Write to us at <a class="link" href="mailto:business@m2pfintech.com">business@m2pfintech.com</a>. Our expert team will get in touch with you.&nbsp;&nbsp;&nbsp;<a class="link" href="https://m2pfintech.com/newsletter/">Subscribe</a> to our newsletter and get the latest fintech news, views, and insights, directly to your inbox.&nbsp;Follow us on <a class="link" href="https://www.linkedin.com/company/m2pfintech/mycompany/">LinkedIn</a> and <a class="link" href="https://twitter.com/m2pfintech">Twitter</a> for insightful fintech bytes curated for curious minds like you.&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;

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