Advanced Encryption Standard

Advanced Encryption Standard is a widely used symmetric-key block cipher developed by Joan Daemen and Vincent Rijmen, and was published in 1998 by the National Institute of Standards and Technology (NIST) as a replacement for the Data Encryption Standard (DES). The development of the Advanced Encryption Standard was influenced by the work of Claude Shannon and Horst Feistel, and was also impacted by the AES competition held by NIST, which involved the evaluation of submissions from IBM, Microsoft, and other companies. The Advanced Encryption Standard has been widely adopted and is used by organizations such as the National Security Agency (NSA), Google, and Amazon Web Services (AWS) to protect sensitive data.

Introduction

The Advanced Encryption Standard is a symmetric-key block cipher that operates on fixed-size blocks of data, typically 128 bits, using a variable-size key, which can be 128, 192, or 256 bits. The algorithm was designed to be efficient and secure, and has been widely adopted by companies such as Intel, Cisco Systems, and Oracle Corporation. The Advanced Encryption Standard has been used in a variety of applications, including Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, which are used to secure online communications between Mozilla Firefox and Google Chrome browsers and web servers hosted by Amazon and Microsoft Azure. The Advanced Encryption Standard has also been used by organizations such as the European Union and the United States Department of Defense to protect sensitive information.

History

The development of the Advanced Encryption Standard began in 1997, when NIST announced a competition to develop a new encryption standard to replace the aging Data Encryption Standard (DES). The competition, known as the AES competition, attracted submissions from a number of companies and researchers, including IBM, Microsoft, and RSA Security. The submissions were evaluated by a team of experts, including Bruce Schneier and Niels Ferguson, and the winning algorithm, known as Rijndael, was announced in 2001. The Advanced Encryption Standard was published in 2001 as FIPS 197, and has since been widely adopted by companies such as Apple, Facebook, and Twitter. The development of the Advanced Encryption Standard was also influenced by the work of William Friedman and Frank Rowlett, who developed the Index of Coincidence technique used in cryptanalysis.

Description

The Advanced Encryption Standard is a symmetric-key block cipher that operates on fixed-size blocks of data, typically 128 bits, using a variable-size key, which can be 128, 192, or 256 bits. The algorithm consists of a series of rounds, each of which involves a substitution, permutation, and mixing of the data, using a combination of S-boxes and linear diffusion layers. The Advanced Encryption Standard also uses a key schedule to generate the round keys used in each round, which is based on the work of Adi Shamir and Leonard Adleman. The algorithm has been implemented in a variety of programming languages, including C++ and Java, and has been optimized for use on a range of platforms, including x86 and ARM processors.

Security

The Advanced Encryption Standard is considered to be a secure algorithm, and has been widely adopted by companies such as Google and Amazon Web Services (AWS) to protect sensitive data. The algorithm has been subject to a number of attacks, including side-channel attacks and differential cryptanalysis, but has been shown to be resistant to these types of attacks, thanks to the work of Don Coppersmith and Eli Biham. The Advanced Encryption Standard has also been evaluated by a number of organizations, including the National Security Agency (NSA) and the European Union, and has been certified for use in a range of applications, including secure communication protocols and data storage systems. The security of the Advanced Encryption Standard has also been influenced by the work of Claude Shannon and Horst Feistel, who developed the principles of confusion and diffusion used in modern cryptography.

Implementations

The Advanced Encryption Standard has been implemented in a variety of programming languages, including C++ and Java, and has been optimized for use on a range of platforms, including x86 and ARM processors. The algorithm has been used in a number of applications, including Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, which are used to secure online communications between Mozilla Firefox and Google Chrome browsers and web servers hosted by Amazon and Microsoft Azure. The Advanced Encryption Standard has also been used by organizations such as the United States Department of Defense and the European Union to protect sensitive information, and has been implemented in a range of products, including Cisco Systems routers and Intel processors.

Cryptanalysis

The Advanced Encryption Standard has been subject to a number of cryptanalytic attacks, including side-channel attacks and differential cryptanalysis, but has been shown to be resistant to these types of attacks, thanks to the work of Don Coppersmith and Eli Biham. The algorithm has also been evaluated by a number of organizations, including the National Security Agency (NSA) and the European Union, and has been certified for use in a range of applications, including secure communication protocols and data storage systems. The cryptanalysis of the Advanced Encryption Standard has also been influenced by the work of William Friedman and Frank Rowlett, who developed the Index of Coincidence technique used in cryptanalysis, and has been the subject of research by cryptographers such as Bruce Schneier and Niels Ferguson. The Advanced Encryption Standard has been used by companies such as Google and Amazon Web Services (AWS) to protect sensitive data, and has been implemented in a range of products, including Apple devices and Facebook servers.

Category:Encryption algorithms