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  Generate certificate in Java -- Certificate chain

In previous post, we have introduced the use of Certificate and how to generate self signed certificate using Java. In this post, we will show you how to generate a certificate chain. Sometimes we may only have a certificate request or we don't have a trusted certificate which can be used for business. Now we need to have a trusted CA to sign our certificate so that it can be used on SSL communications. To generate a certificate chain, we may first have our own certificate(A), then we may use ot...

   Java,Certificate chain,Creation, Pure Java     2014-07-30 08:24:52

  Convert printed document into electronic document

首先你得先把这些打印稿或文件通过扫描仪扫到电脑上去，一般单位都有扫描仪，如果没有也没关系，用数码相机拍也行，拍成图片放到WORD里面去，不过在些 之前，你还得装...

   Printed document,Electronic document,Con     2011-07-23 23:19:42

  Returning To Work After COVID-19: How To Ensure Your Employees Are Ready

Every aspect of our day-to-day lives has been impacted by the Internet, whether it be work or personal time. Since nations enforced strict lockdowns, employees have mostly been working remotely. Now that the world is slowly getting back on its feet after the lockdown, employers are evaluating their options and planning strategies to ensure employee safety after returning to the physical office.  With some restrictions remaining, companies must consider not just the workplace, but employees'...

   TRAINING,COVID-19,REMOTE WORK     2022-03-29 08:35:08

  How GitHub Works: Hours are Bullshit

Frederick Winslow Taylor wrote the seminal analysis of management and efficiency in 1911 with The Principles of Scientific Management. He took the first scientific approach towards maximizing efficiency in manufacturing jobs. Time is money. Faster is better. More hours are better. Hours are bullshit Hours are great ways to determine productivity in many industries, but not ours. Working in a startup is a much different experience than working in a factory. You can’t throw more time at a...

   Work,Style,Time,Efficiency,Code,Enforcem     2011-08-19 07:42:32

  Generate certificate with cRLDistributionPoints extension using OpenSSL

In an X509 certificate, the cRLDistributionPoints extension provides a mechanism for the certificate validator to retrieve a CRL(Certificate Revocation List) which can be used to verify whether the given certificate is revoked.   A cRLDistributionPoints extension can contain one or more DistributionPoints where the CRL can be retrieved from. Each DistributionPoint consists of three fields,each of which is optional: distributionPoint : it contains either a SEQUENCE of general...

   X509,OPENSSL,CERTIFICATE,CRLDISTRIBUTIONPOINT,EXTENSION     2015-10-22 03:41:11

  Generate certificate in Java -- Store certificate in KeyStore

In previous post, we have explained how to create a certificate chain in Java. After generating the chain, we need to store it somewhere so that it can be used later when we are doing the actual SSL communication, either in a key store or trust store. This post will show you how to store the private key and its associated certificate chain in a keystore file. There are different types of keystore in Java, in this post, we will choose the JKS to demonstrate how to store the certificate chain. Whe...

   Java,Certificate chain,Keystore     2014-08-20 03:56:39

  4 Reasons Why We are NOT in a Post-PC Age

Sales of desktop PCs and laptops are falling. It’s impossible to read any technical media without hearing about the “death of the PC.” And both Apple and Microsoft are soon to release operating systems that seek to merge the features of the computer operating system with those available on tablet devices. All this evidence mounts up to suggest that the Steve Jobs-coined “post PC era” is upon us. Well, I’m going to stick my neck out on this: I donâ€...

   Post PC,Reason,PC     2012-03-26 15:24:46

  Becoming a Better Developer, Part 1: Making Fans

If you're trying to grow your startup you've come to the right place. Get my 170-page ebook on how to grow a startup and join thousands of self-funded entrepreneurs by subscribing to my newsletter at right. This is the first of what I hope to become an ongoing series about non-technical ways to improve yourself as a developer. Becoming a better developer involves more than learning new technical skills; learning about your company and co-workers will dramatically improve the software y...

   Developer,Tips     2011-06-29 08:38:26

  What's wrong with us in Mobile Era?

Every day when I surf the Internet, I find much news about new smartphones and Android, iOS apps. Also I can find many people use iPhones and other smartphones with Android OS. Apparently we are now in Mobile era. People can find tons of news that says how Mobile has changed our life, made our life simpler and how easy we can know the world with mobile technology. Yes, it's true, now we only need to press a button, we can know what happens in USA which is thousands kilometres away from us. We ca...

   Mobile,Cold,Stay away,Smartphone     2012-01-07 12:10:35

  10 Time-Management Tips That Work

Chances are good that, at some time in your life, you've taken a time-management class, read about it in books, and tried to use an electronic or paper-based day planner to organize, prioritize and schedule your day. "Why, with this knowledge and these gadgets," you may ask, "do I still feel like I can't get everything done I need to?"The answer is simple. Everything you ever learned about managing time is a complete waste of time because it doesn't work.Before you can even begin to manage time,...

   Time management,Tips,Work,Overhead     2011-10-10 05:24:01

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