Asymmetric cryptography also known as public-key encryption uses a public/private key pair to encrypt and decrypt data. Public key in asymmetric cryptography is available to public but the private key must be protected with the user, else it can be used to decrypt data.
In .NET, the RSACryptoServiceProvider and DSACryptoServiceProvider classes are used for asymmetric encryption. A random public/private key pair is generated when a new instance of the class is created.
Once keys are generated, we can use ToXmlString or ExportParameters method to read the keys.
The ToXmlString method returns key information in XML as a string. The method takes a Boolean parameter. If passed false, it returns public key only. If passed true, it returns both private and public pair.
The following code snippet returns a public key.
stringstr=RSA.ToXmlString(false);
The public key looks like the following with a Modulus value and an Exponent value.
To generate an SSH private/public key pair for your use, you can use the ssh-keygen command-line utility. You can run the ssh-keygen command from the command line to generate an SSH private/public key pair. If you are using Windows, by default you may not have access to the ssh-keygen command.
Public Key Cryptography (asymmetric) uses encryption algorithms such as RSA and Elliptic Curve Cryptography (ECC) to create the public and private keys.
It's actually possible to generate several public keys from the same private key. However, you'll only ever have one private key. And while it's theoretically possible to guess or calculate the public key from the private key, the reverse would take hundreds of years to crack.
How Is a Private Key Generated? Private keys are usually generated by a user's Bitcoin wallet. However, the user almost never has to see or directly interact with their private keys as their wallet handles all of the complex math behind the scenes. Bitcoin wallets use an industry standard to derive private keys.
In this article, we've looked at how we can generate the public key from a given private key using different command-line tools. We've started by demonstrating the ssh-keygen command, which allows us to also convert the public key into different formats in addition to generating it.
You cannot have a private class unless it is nested. In what scenario other then for an innter class would you like to have a 'private' class ? You can use the internal modifier to create a class that is only visible in the current assembly.
To set private methods, use the private access specifier. Private access specifier allows a class to hide its member variables and member functions from other functions and objects. Only functions of the same class can access its private members.
Introduction: My name is Greg Kuvalis, I am a witty, spotless, beautiful, charming, delightful, thankful, beautiful person who loves writing and wants to share my knowledge and understanding with you.
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