What is AES (Rijndael) Encryption?

AES encryption or advanced encryption standard is a symmetric block cipher that uses a key to encrypt and decrypt the data. AES is a block cipher that uses a fixed block size of 128-bits and key sizes of 128, 192, and 256-bits to encrypt and decrypt data. It was developed by Joan Daemen and Vincent Rijmen, two cryptographers from Belgium.

what is aes encryption

Advanced Encryption Standard (AES) is the most widely used online security protocol – symmetric block cipher – for encrypting data and keeping it safe from unauthorized access

Modern-day encryption is at the forefront of every digital device. It's used to protect data from hackers, prevent unauthorized access, and ensure security for personal information.

In order to understand how AES/Rijndael encryption works and what it can do for you, it's necessary to have a basic understanding of how it works. This article provides an introduction to AES/Rijndael encryption and the benefits associated with its use. 

What is AES/Rijndael encryption?

Rijndael is a symmetric block cipher that uses a key to encrypt and decrypt the data. AES is a block cipher that uses a fixed block size of 128-bits and key sizes of 128, 192, and 256-bits to encrypt and decrypt data to encrypt and decrypt data. It was developed by Joan Daemen and Vincent Rijmen, two cryptographers from Belgium.

AES/Rijndael encryption is used in many applications including web browsers, e-commerce sites, and banking software. The main purpose of Rijndael encryption is to safeguard the confidentiality of personal information.

There are three lengths of AES encryption keys. Each key length has a different number of possible key combinations:

  • 128-bit key length: 3.4 x 1038
  • 192-bit key length: 6.2 x 1057
  • 256-bit key length: 1.1 x 1077

Even though the key length of this encryption method varies, its block size – 128-bits (or 16 bytes) – always stays fixed. 

How does AES/Rijndael encryption work?

AES/Rijndael encryption is a type of symmetric-key cryptography, which means that the same key is used to encrypt and decrypt data. AES/Rijndael was originally developed as the U.S. government's standard for encrypting information classified as “top secret.”

The AES algorithm is a block cipher, which means that it encrypts data in fixed-length blocks. The AES algorithm uses 128-bit blocks, meaning that each block of data is encrypted using a 128-bit key.

AES consists of two main parts: a set of ciphers and an electronic signature scheme. The cipher part refers to the algorithms used every time you want to encrypt data with AES/Rijndael. There are many different types of ciphers, but they all work by using a key to encrypt their plaintext into ciphertext.

 The second part is called an electronic signature scheme, which can be used in conjunction with ciphers to create an authentication mechanism for your data or provide some other important function in order to protect it from tampering.

What are the Benefits of AES/Rijndael encryption?

AES encryption is a robust and secure encryption method that's been in use for over 20 years. It provides a high level of protection, making it the ideal choice for encrypting data.

 These are the benefits of this type of encryption: 

  • Key management: AES/Rijndael uses symmetric key algorithms, meaning that the same key is used to encrypt and decrypt the data. This reduces the risk of key compromise due to a lack of user knowledge or control over how keys are generated.
  • Robust security: AES/Rijndael offers 256-bit security, which means it's virtually impossible to crack even with significant computing power.
  • Security by design: The algorithm was designed from the ground up to be resilient against cryptanalysis attacks. Because of this, there are no known weaknesses in AES/Rijndael that can be exploited by attackers.
  • Speed and efficiency: AES/Rijndael has a block size of 128 bits—the fastest block size available today—which allows for faster data processing as well as maximum security with less memory usage than other methods.

Summary

AES/Rijndael encryption is an advanced encryption algorithm. AES-256 is today standard for encrypting personal data for services like VPNs, cloud storage, and password managers.

It was named after its inventors, Joan Daemen and Vincent Rijmen. It's one of the most commonly used encryption algorithms for symmetric key cryptography.

References

https://en.wikipedia.org/wiki/Advanced_Encryption_Standard

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