Generate or Create ECDSA - Elliptic Curve Digital Signature Algorithm Keys using OpenSSL in Windows

 Hi folks,

Today we will see how we can create ECDSA (Elliptic Curve Digital Signature Algorithm) Keys

Pre-requisites

OpenSSL

Add openssl bin directory to the environment PATH variable 

Generate Keys

Open Powershell and execute the following commands

1. Get the ECC curves list

openssl ecparam -list_curves

2. Generate a private key using your chosen curve

openssl ecparam -name prime256v1 -genkey -noout -out private-key.pem

3. Generate public key from the private key

openssl ec -in private-key.pem -pubout -out public-key.pem

4. Create a self-signed certificate with 1 year validity

openssl req -new -x509 -config "<opensslDirPath>/share/openssl.cnf" -key private-key.pem -out cert.pem -days 360

5. Convert pem to pfx

get-content private-key.pem, cert.pem | out-file cert-with-private-key

openssl pkcs12 -export -inkey private-key.pem -in cert-with-private-key -out cert.pfx

 Note: Enter the password when prompted (Optional)

Now, you can install the PFX file and check the certificate properties and make use of it.

Send your valuable feedback and comments to psrdotcom@gmail.com

Digital Cameras in the Budget Range

Hi everyone,

I am posting this one related to digital cameras.

In India most of the users wants the camera just for occasional purpose.

Example: For outing, Home functions etc.

For those basic needs, we can have a budget camera.

These are my opinion on the current cameras in Nikon, Canon and Sony

I think these are best cameras in mid range ..

Below Rs. 5000

Nikon Coolpix L23

Canon Powershot A1200

Below Rs. 6000

Nikon Coolpix L26

Canon A3200 IS

Sony W520

I decided the camera based on the resolution (megapixel) and optical zoom. I don't to go in-depth in deciding the basic camera.

Send your feedback and comments to psrdotcom@gmail.com

Adobe Digital Editions free eBook, Digital Publications reader

Hi all,

We can download free eBook reader called from Adobe Digital Editions. It is awesome to use and read the eBook from it. You can purchase the digital eBooks and read from it.

Installation Steps:
1) Please visit this http://www.adobe.com/products/digitaleditions/
2) In the "Install Digital Editions" Section, One separate frame named "Adobe Digital Editions Installer" with any one of the following

  a) System (Error):
      "Sorry, but your system does not meet the minimum system requirements"
  b) Install: Click on install to to start the installation
       -> Download the executable and Install the software
       -> Give your Adobe ID if exists at the time of installation
  c) Launch: If the software already installed, it will launch the application
3) For testing, you can download the sample eBooks from adobe digital editions sample library
4) Click the downloaded item to view in Adobe Digital Editions

Enjoy the eBook reading. The digital editions available in different languages.

References:
http://www.adobe.com/products/digitaleditions/
http://www.adobe.com/products/digitaleditions/library/