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Dynamsoft Developer Blog

Get the latest information, insights, tutorials, and news from Dynamsoft.

  • How to Use OpenSSL to Sign Certificate

    Mar 13, 2014  Miscellaneous

    In this tutorial, let’s continue to learn how to use OpenSSL to sign a certificate. Steps of Signing Certificate with OpenSSL We can use the command line to quickly generate ca certificate. openssl genrsa -out cakey.pem 2048 openssl req -new -days 365 -x509 -key cakey.pem -out cacert.pem -nodes -subj /C=CA/ST=BC/L=Vancouver/O=Dynamsoft/OU=Dynamsoft/CN=Dynamsoft/emailAddress=support@dynamsoft.com...

    •  OPENSSL
    •  C/C++
  • How to Read and Write Excel Files in Java

    Mar 12, 2014  Miscellaneous

    Previously, I talked about how to check PageRank in Java. In this article, I will combine PageRank with Excel files. To operate Excel files in Java, I used Apache POI - the Java API for Microsoft Documents. Apparently, you can download the API package, and follow the relevant tutorials to...

    •  JAVA
    •  PAGE RANK
    •  SEO
    •  EXCEL
  • How to Use OpenSSL to Generate X.509 Certificate Request

    Mar 03, 2014  Miscellaneous

    In this tutorial, let’s learn how to use OpenSSL to generate X.509 certificate request. Certificate signing request is a message sent from an applicant to a certificate authority, which usually includes: Country Name (2 letter code) [US] State or Province Name (full name) [BC] Locality Name (e.g., city) [Vancouver] Organization...

    •  OPENSSL
    •  CERTIFICATE
    •  SECURITY
  • How to Use OpenSSL to Generate RSA Keys in C/C++

    Feb 26, 2014  Miscellaneous

    It is known that RSA is a cryptosystem which is used for the security of data transmission. This tutorial introduces how to use RSA to generate a pair of public and private keys on Windows. Download and install OpenSSL https://www.openssl.org/community/binaries.html. Find libeay32.lib, ssleay32.lib and libeay32.dll. The following sample code will...

    •  RSA
    •  OPENSSL
    •  C/C++
    •  SECURITY
  • How to Extract Domain Names from URLs in VBA

    Feb 11, 2014  Miscellaneous

    Backlink is one of the most important factors for search engine ranking. Thus, the analysis of backlinks is significant for website owners. It is known that Google Webmaster tools can record search traffic allowing users to check the links to their sites. We can download the relevant data as figure...

    •  VBA
    •  BACKLINK
    •  VISUAL BASIC
    •  SEO
  • Brief Introduction of Strong Name Signatures

    Feb 07, 2014  Miscellaneous

    Strong name signatures consist of the identities of an assembly. They are strengthened by both public keys and digital signatures (as generated from the assembly). The identities include the plain text name, version number and regional information of the assembly (if provided). An assembly with a strong name can only...

    •  SIGNATURE
    •  SECURITY
  • Have Fun with the WPF Demo of .NET TWAIN 5.0

    Jan 14, 2014  Document Scanning

    Dynamic .NET TWAIN 5.0 has been released for a while. To help users to quickly grasp APIs, a brand-new API demo, written in WPF with C# & VB.NET, is included. In this tutorial, we would like to show the anatomy of this application. Let’s glance at the screenshot as a...

    •  OCR
    •  .NET TWAIN
    •  C#
    •  DOCUMENT SCANNING
  • How to Get the Working Directory in a WPF Project

    Dec 19, 2013  Miscellaneous

    Yesterday, my colleague told me that there was a weird issue that existed in our WPF sample code for Dynamic .NET TWAIN. What we wanted to implement was to create two projects, and start one application from another. The problem was, when we started the invoked application independently, it worked...

    •  C#
    •  WPF
  • Webcam in HTML5

    Sep 21, 2013  Miscellaneous

    In the previous blog post, I have glanced at HTML5. Probably many people have already experienced some cool functions of HTML5. In this article, I would like to share how to invoke Webcam in HTML5. While strolling through StackOverflow, I found there are many questions about how to display webcam...

    •  HTML5
    •  WEBCAM
  • Scan and Save Images to a Database in C# Using Dynamic .NET TWAIN

    Sep 12, 2013  Document Scanning

    In today’s “big data era”, more and more organizations are using an enterprise content management (ECM) or record management system (RMS) to help maintain and manage the documents. Digitizing documents and storing them in a central database has become an important part of many organization’s document management workflow. For this...

    •  C#
    •  .NET TWAIN
    •  DOCUMENT SCANNING
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