What is cryptography in security?

 The definition of cryptography tells us that it is the study of secure communications techniques that allow only the sender and intended recipient of a message to see its content.

Download our free guide: The great challenges of cybersecurity. When protection and talent shield the business
Cryptographers protect computer and information technology systems by creating algorithms and codes to encrypt data. They often also carry out the tasks of a cryptanalyst, cracking algorithms and decoding text to decipher information.

What are the four pillars of crypto?
This discipline revolves around the protection of four pillars: physical, data, process and system architecture . It achieves this thanks to the use of specific tools.

What are crypto tools?
The security token or the authentication token is what is considered a cryptography tool . Using the security token, the user can be authenticated. It is also used to provide state to the HTTP protocol. The security token must be encrypted to allow secure data exchange.

What are the three types of cryptography?
There are three types of cryptography: secret key, public key, and hash function .

It is mainly used for privacy and confidentiality.
Public Key Cryptography — Uses one key for encryption and another for decryption. This method is known as asymmetric encryption. It is mainly used for authentication and key exchange.Blockchain development company
Hash functions: uses a mathematical transformation to “encrypt” the information irreversibly, providing a digital fingerprint. It is primarily used for message integrity.
How crypto is used in everyday life
Cryptography in everyday life appears in a number of situations where the use of such a set of techniques facilitates the provision of a secure service. This discipline is put at the service of user protection when withdrawing cash from an ATM, renewing a contract with your entertainment service provider, using online file storage or email through some free software. It is also essential for safe web browsing and for the use of any connected mobile device.

Today, cryptography is used to keep sensitive material , such as private passwords, secure online. Cybersecurity experts use cryptography to design algorithms, ciphers, and other security measures that encrypt and protect company and customer data.

Cryptography is the development of a set of techniques that allow messages or files to be altered and modified so that they cannot be read by all those users who are not authorized to do so. Nowadays, in the height of digital communications, it works as the basis for any computer security process.

This discipline was born in Ancient Greece with the aim of preventing the spread of military secrets. Over the centuries, these techniques have become considerably more complex and currently go through a large part of our daily lives: they guarantee the security of our transactions through online banking.for instance. They are also gaining prominence in communication between users: messaging applications such as Signal or Telegram have for years allowed us to send encrypted messages from “end to end”, from origin to destination. Thus, even by accessing their servers, the content of the chats could not be read. WhatsApp joined the trend in 2016 and Skype only at the beginning of 2018, confirming a clear direction towards more secure communication platforms.Blockchain Development services

But how do these encryption methods work today? When we convert a message that can be read to one that is unreadable, that is, we transform a message into characters that do not make sense, we are carrying out what we call an encryption process . And if we want that message to be readable again, we do the reverse process, which we call decryption . In general, these mechanisms, which form the basis of cryptography, are carried out using algorithms and keys.