The most common type of cryptography is RSA, where the private key is kept secret while the public key is made available. DSA uses a different algorithm, which generates two keys: a private key and a public key. The private key should never be shared, as it can be used to attack the system. The public key can be distributed widely, allowing others to verify the authenticity of messages signed with it.

**What is a Public Key Cryptography?**

Public key cryptography is a cryptographic system that uses two keys: a public key and a private key. The public key is published and can be used by anyone to encrypt a message. The private key is known only to the owner and is used to decrypt messages encrypted with the public key.

**RSA and DSA Algorithms:**

The RSA algorithm is a public-key cryptography system that uses prime numbers and exponentiation. The DSA algorithm is a digital signature standard that uses discrete logarithms. Both algorithms are used in many applications, including email and file encryption.

- Create RSA Private Key with PEM format

In order to create a RSA private key, you will need to use the PEM format. The first step is to create a new file in your text editor. Next, you will need to type in the following line of code:

BEGIN RSA PRIVATE KEY

You can then use your text editor’s save function to save the file as “key.pem”. After that, you can use the following command to generate your key:

openssl genrsa -out key.pem 2048

This will create a 2048-bit RSA private key and store it in the key.pem file.

- Create RSA Public Key with PEM format

Public-key cryptography is a cryptographic system that uses two keys: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret. Messages encrypted with the public key can only be decrypted with the corresponding private key, and vice versa.

Public-key cryptography was first described by Whitfield Diffie and Martin Hellman in 1976. They proposed a new way to exchange secrets without having to meet in person or share a password.

- Create a DSA Private Key with PEM format

A private key is a secret piece of information that proves your identity when using digital signatures. In order to create a DSA private key, you will need to use the OpenSSL command-line tool. First, you will need to generate a new private key. To do this, type the following command at the prompt:

openssl genrsa -out myprivatekey.pem 2048

This will generate a new private key named “myprivatekey.pem.” You will be asked to enter a passphrase. Be sure to choose a strong password and remember it!

**How to generate a public and private key with OpenSSL?**

Public and private key cryptography is a system of encrypting and decrypting data using two keys that are mathematically related. The public key can be shared with anyone, while the private key must be kept secret. In this article, we will show you how to generate a public and private key with OpenSSL.

**Verifying the Keys:**

The security of our digital lives depends on the strength of the cryptography that protects our data. The most common form of cryptography is based on keys: a secret key that is used to encrypt data, and a public key that is used to decrypt it. It is critical that these keys be absolutely reliable, because if an attacker could compromise them, they could read all of our encrypted data.