What is the AES algorithm simplified?

What are the steps of AES algorithm?

AES (Advanced Encryption Standard) is a US Government-sponsored algorithm that is part of ANSI X9.22 and defined by the U. National Institute of Standards and Technology (NIST). It has been adopted by many governments and companies, including Microsoft.

What is the purpose of this algorithm? The goal of AES is to provide protection for data in motion, such as over the Internet. As such, the algorithm does two things: First, it allows secure encryption of data during transmission. Second, it uses the power of large hardware-based parallelism to achieve very high speed. The latter is extremely useful for a number of applications, as a parallel process is able to handle much larger numbers of operations per second than a serial one.

How fast can it go? You can find the AES instruction cycle timing at Wiki.e. As a single-digit number, the clock rate of a AES processor will define how many operations a processor can perform per second, or how many bytes of data can be moved per second. The AES instruction cycle timing shows some of the most popular AES implementations; other implementations should yield similar results.

1 - Instruction cycle timing. The 1 - 3 digit number shows a single AES cycle. AES Instruction Cycle Timing Data Transfer Latency Instruction Cycle. # Byte. # Per Instruction Cycle #.







What is an example of the AES algorithm?

I've been trying to implement it on the Raspberry Pi 3.

When I look into the manual, the only example is a 128 bit block with AES-NI encryption using hardware. Is that correct, ie are AES in hardware algorithms not just about the encryption function itself? My goal is not only have a software solution, but to be able to get the maximum encryption speed (using eg the AES in hardware instructions). Yes, you may well be correct that AES-NI instructions are not really a part of the AES algorithm per se, but rather a (part of an) implementation technique or API (Application Programming Interface). These enhancements are most easily explained with the example of a cipher. In a standard AES implementation, a user would feed an arbitrary length message to the cipher, and a cipher key would produce an arbitrary length ciphertext. In the enhanced AES mode, a message and key are chosen at random, and the cipher performs as specified by AES for that chosen message and key. This choice of a key and a message is called a key-in-plaintext attack because the attacker can choose the plaintext (what the ciphertext is) while keeping the key secret. The resulting performance is considerably faster than standard AES.

As such, with AES-NI we can use AES as the primitive to create secure algorithms without needing to rework the actual cryptography.

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