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This article will explain in detail what is the use of OpenSSL for you. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

In 1995, Eric A. Young and Tim J. Hudson invented SSLeay, which is the implementation of the SSL (Open-source Secure Sockets) protocol. In 1998, Young and Hudson stopped maintaining SSLeay and started working for RSA in Australia.

Then I showed up and re-established the branch based on SSLeay, officially named OpenSSL. I am open source and free, and can be used commercially.

I have two main functions:

1. I have implemented the SSL/TSL protocol, which can be used for secure data transmission on Web servers. For example, the TSL module of Node.js is based on my implementation.

two。 I am also a password library, used to ensure the security of communication in the computer network, the implementation of a variety of encryption and decryption algorithms, such as RSA,DES. I can also sign autographs.

I use C language implementation, which can better achieve cross-platform, and other languages also have related framework implementation, in fact, they use me at the bottom.

Generally speaking, I am actually a software package that provides an implementation of the TSL/SSL protocol and is a cryptographic library that implements a lot of encryption algorithms, such as RSA,DES. But my structure is very complex and scalable.

I mainly include the following three parts:

The overall code architecture is as follows:

For more information about me, please see:

Https://github.com/openssl/openssl

In Baidu encyclopedia, I am defined as this:

On a computer network, OpenSSL is an open source library package that applications can use to communicate securely, avoid eavesdropping, and confirm the identity of the other end of the connection. This package is widely used on web servers on the Internet.

SSL is an acronym for Secure Sockets Layer (secure Sockets layer Protocol) and provides secret transmission over Internet. When Netscape launched the first Web browser, it also proposed the SSL protocol standard. Its goal is to ensure the confidentiality and reliability of communication between the two applications, which can be supported on both the server side and the user side. It has become the industry standard for secure communications on Internet.

Use

Mac automatically installs the OpenSSL command tool, which can be used by opening the terminal command tool.

1. Encryption and decryption using RSA algorithm

Generate RSA public key and private key pairs.

Extract the public key:

Encrypt the file using the public key:

Decrypt the file using the private key:

Command line supported by openssl

This is the end of this article on "what's the use of OpenSSL". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it out for more people to see.

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