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  • c# How to Verify Signature, Loading PUBLIC KEY From PEM file?

    - by bbirtle
    I'm posting this in the hope it saves somebody else the hours I lost on this really stupid problem involving converting formats of public keys. If anybody sees a simpler solution or a problem, please let me know! The eCommerce system I'm using sends me some data along with a signature. They also give me their public key in .pem format. The .pem file looks like this: -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDe+hkicNP7ROHUssGNtHwiT2Ew HFrSk/qwrcq8v5metRtTTFPE/nmzSkRnTs3GMpi57rBdxBBJW5W9cpNyGUh0jNXc VrOSClpD5Ri2hER/GcNrxVRP7RlWOqB1C03q4QYmwjHZ+zlM4OUhCCAtSWflB4wC Ka1g88CjFwRw/PB9kwIDAQAB -----END PUBLIC KEY----- Here's the magic code to turn the above into an "RSACryptoServiceProvider" which is capable of verifying the signature. Uses the BouncyCastle library, since .NET apparently (and appallingly cannot do it without some major headaches involving certificate files): RSACryptoServiceProvider thingee; using (var reader = File.OpenText(@"c:\pemfile.pem")) { var x = new PemReader(reader); var y = (RsaKeyParameters)x.ReadObject(); thingee = (RSACryptoServiceProvider)RSACryptoServiceProvider.Create(); var pa = new RSAParameters(); pa.Modulus = y.Modulus.ToByteArray(); pa.Exponent = y.Exponent.ToByteArray(); thingee.ImportParameters(pa); } And then the code to actually verify the signature: var signature = ... //reads from the packet sent by the eCommerce system var data = ... //reads from the packet sent by the eCommerce system var sha = new SHA1CryptoServiceProvider(); byte[] hash = sha.ComputeHash(Encoding.ASCII.GetBytes(data)); byte[] bSignature = Convert.FromBase64String(signature); ///Verify signature, FINALLY: var hasValidSig = thingee.VerifyHash(hash, CryptoConfig.MapNameToOID("SHA1"), bSignature);

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  • How to Verify Signature, Loading PUBLIC KEY From PEM file?

    - by bbirtle
    I'm posting this in the hope it saves somebody else the hours I lost on this really stupid problem involving converting formats of public keys. If anybody sees a simpler solution or a problem, please let me know! The eCommerce system I'm using sends me some data along with a signature. They also give me their public key in .pem format. The .pem file looks like this: -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDe+hkicNP7ROHUssGNtHwiT2Ew HFrSk/qwrcq8v5metRtTTFPE/nmzSkRnTs3GMpi57rBdxBBJW5W9cpNyGUh0jNXc VrOSClpD5Ri2hER/GcNrxVRP7RlWOqB1C03q4QYmwjHZ+zlM4OUhCCAtSWflB4wC Ka1g88CjFwRw/PB9kwIDAQAB -----END PUBLIC KEY----- Here's the magic code to turn the above into an "RSACryptoServiceProvider" which is capable of verifying the signature. Uses the BouncyCastle library, since .NET apparently (and appallingly cannot do it without some major headaches involving certificate files): RSACryptoServiceProvider thingee; using (var reader = File.OpenText(@"c:\pemfile.pem")) { var x = new PemReader(reader); var y = (RsaKeyParameters)x.ReadObject(); thingee = (RSACryptoServiceProvider)RSACryptoServiceProvider.Create(); var pa = new RSAParameters(); pa.Modulus = y.Modulus.ToByteArray(); pa.Exponent = y.Exponent.ToByteArray(); thingee.ImportParameters(pa); } And then the code to actually verify the signature: var signature = ... //reads from the packet sent by the eCommerce system var data = ... //reads from the packet sent by the eCommerce system var sha = new SHA1CryptoServiceProvider(); byte[] hash = sha.ComputeHash(Encoding.ASCII.GetBytes(data)); byte[] bSignature = Convert.FromBase64String(signature); ///Verify signature, FINALLY: var hasValidSig = thingee.VerifyHash(hash, CryptoConfig.MapNameToOID("SHA1"), bSignature);

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  • Centering a div block without the width

    - by Vinicius
    Hi, I have a problem when I try to center the div block "products" because I don't know in advance the div width. Anybody have a solution? Update: The problem I have is I don't know how many products I'll display, I can have 1, 2 or 3 products, I can center them if it was a fixed number as I'd know the width of the parent div, I just don't know how to do it when the content is dynamic. <style> .product_container { text-align: center; height: 150px; } .products { height: 140px; text-align: center; margin: 0 auto; clear: ccc both; } .price { margin: 6px 2px; width: 137px; color: #666; font-size: 14pt; font-style: normal; border: 1px solid #CCC; background-color: #EFEFEF; } </style> <div class="product_container"> <div class="products" id="products"> <div id="product_15"> <img src="/images/ecommerce/card_default.png"> <div class="price">R$ 0,01</div> </div> <div id="product_15"> <img src="/images/ecommerce/card_default.png"> <div class="price">R$ 0,01</div> </div> <div id="product_15"> <img src="/images/ecommerce/card_default.png"> <div class="price">R$ 0,01</div> </div> </div> </div>

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  • How to factor out data layer in nopCommerce and replace MS SQL with RavenDB?

    - by Kaveh Shahbazian
    I am new to nopCommerce and ecommerce in general but I am involved in an ecommerce project. Now from my past experiences with RavenDB (which mostly were absolutely pleasant) and based on the needs of the business (fast changes with awkward business workflows) It seemed to be an appealing option to have RavenDB handling all sort of things related to the database. I do not understand design and architecture of nopCommerce fully so I did not reach to a conclusion on how to factor data parts, since it seems the services layer actually does not abstract data-layer concepts away; like bringing in EF working model to other layers. I have found another project which used NuDB as it's database as a nopCommerce fork. But it did not help because NuDB still has the feeling of a RDBMS and is not as different as RavenDB. Now first how can I learn about the internals of nopCommerce (other than investigating the code)? It's workflows? It's conventions? Second has anyone tried something similar before with a NoSQL database (say like MongoDB or RavenDB)? Is it possible to achieve this in a 1 (~2) month time frame? Thanks in advance;

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  • WP E Commerce Safe Mode restriction error [on hold]

    - by Mustafa Kamal
    I have my online shop, created with WP Ecommerce getting broken after I moved it to another server. I could be sure that the problem comes from WP Ecommerce because when I disable that plugin. Everything run as expected. This is the exact error message Warning: session_start() [function.session-start]: SAFE MODE Restriction in effect. The script whose uid is 515 is not allowed to access /tmp owned by uid 0 in /home/mikalu/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php on line 17 Fatal error: session_start() [<a href='function.session-start'>function.session-start</a>]: Failed to initialize storage module: files (path: ) in /home/mikalu/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php on line 17 I've tried to turn off safe mode on my php configuration. nothing happens. the error's still there. I thought it was some kind of permission issue, so I tried to change /tmp permission to 777. Nothing happens. I googled it some more and suspect it might have something to do with fastCGI configuration and stuff. Which I totally don't understand. My googling result mostly suggest me to consult the web hosting provider or even to move to another host. But in this case, I am the owner of the server (VPS with cPanel/WHM). And I don't have any idea how to solve this kind of problem.

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  • most popular j2ee based websites

    - by krishna
    J2EE as I understand is used to build Enterprise applications. My question is :What are the most popular public facing(internet) sites using j2ee stack. The one's that I know of are : linkedIn.com ,evite.com and sun ibm and oracle (obviously) Eclipse.org uses php, I wonder why? If you have worked on/know any other sites, can your share your experience and also the technologies used(if that's not an issue)? EDIT:It doesn't have to use the full stack. EDIT : There are quite a few ecommerce websites like bestbuy.com. I know this bcos I worked with the ATG(atg.com) ecommerce suite and their website lists their clients. Iam looking for those kind of examples and also your experience working on them. Please limit to only internet sites

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  • How to Software Service Industry get their Client from or where do they look for their Clients ?

    - by Rachel
    This question is inclined more towards Business Side of Software Industry, I am sure that we have two types in Software Industry as with any other Industry, i.e, Service side and Product Side. Basically for Product based company, we are looking more into product features and to see if market if mature or not for particular product but as far as Service Based company goes (may be it can be big giants like Infosys, TCS or Sapient or some midsize or small companies which provide services like:Web Design,Website Design,Corporate Identity,Logo Design,Flash Design,Web Applications,Enterprise Portal,Rich Internet Applications,Business Applications,Technology Consulting,Ecommerce,Online Store Creations,Custom Shopping Carts,Ecommerce Hosting,Website Marketing,Organic SEO,Pay-Per-Click,Social Media Optimization,Mobile,Mobile Website and Mobile Applications) where do they look for Client and how do they manage to get one ? So my basic question is Where do Service Based Companies Look for Client or get their Clients Form ?

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  • C# Inconsistent Accessibility (Multiple Classes)

    - by MattP
    I am getting an Inconsistent Accessibility problem where I have one class that contains a List of another class namespace NS { public class Foo { public Foo() { this.bar = new List<Bar>(); } private List<Bar> bar; } public class Bar { public Bar() { } } } The error is property type NS.Bar is less accessible than property NS.Foo.Bar The structure to the application is each Foo consists of a Dynamic Array (List) of Bar. It's not ecommerce but the best example would be an eCommerce Store-Categories-Products in terms of how the data will be accessed.

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  • SQL Server Driver for PHP 2.0 CTP adds PHP's PDO style data access for SQL Server

    - by The Official Microsoft IIS Site
    Today at DrupalCon SF 2010, we are reaching an important milestone by releasing a Community Technology Preview (CTP) of the new SQL Server Driver for PHP 2.0 , which includes support for PHP Data Objects (PDO). Alongside our efforts, the Commerce Guys , a company providing ecommerce solutions with Drupal, is also presenting a beta version of Drupal 7 running on SQL Server using this new PDO Application Programming Interfaces (API) in the SQL Server Driver for PHP 2.0. Providing a PDO driver in SQL...(read more)

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  • Payment Gateway Choices

    Commissioning a new eCommerce Website is a process that demands answer after answer to questions that before you begin you may not be prepared for. One of the most fundamental choices that you must m... [Author: Diane Forster - Web Design and Development - March 29, 2010]

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  • Chose the Right Zen Cart Developer For Your Shopping Cart

    Zen Cart is an easy and flexible shopping cart solution for most ecommerce sites. Companies can now hire the best Zen Cart developers from the software development market with relative ease. This article briefly describes Zen Cart as a shopping cart development tool and takes a look at Zen Cart developers.

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  • Hire Web Professionals To Get The Desired Results

    If you are looking for quality web design services, web development services, open source customization, Internet marketing and Ecommerce solutions, look no further than the World Wide Web. You will ... [Author: Asif Ahmed - Web Design and Development - April 06, 2010]

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  • SEO and SEM in China

    With the advent of internet, the Chinese people are shopping and learning new ways, thus the ecommerce sector is evolving at fast pace in order to meet the needs and requirements of the wide variety of clientele. Today, a large number of Chinese internet users like to shop online but have very little idea about China SEO strategies involved in the process of internet shopping.

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