Which Encryption Technique Is Used In Advanced Encryption Standard?

Which Encryption Technique Is Used In Advanced Encryption Standard?

Nov 27, 2023
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Have you grown your business with consistent effort? You have also expanded your customer base to earn more revenue. However, it has posed some new challenges to your business. How will you protect data, the most valuable asset of your business? The loss of customer data and financial details will harm your business reputation, and you may be at a high risk. That is why you should consider Advanced Encryption Technology for data protection. Whether you have a small or big business, you have to implement the best cybersecurity technology to stay safe in the digital world. Let us now discuss AES and the technology used for it.

Advanced Encryption Standard- Protect Your Data

AES involves using highly sophisticated encryption algorithms to secure sensitive data more securely. The US government has set it as the standard for data encryption and replaced the previous standard known as DES. The new encryption method uses symmetric key algorithms for data encryption and decryption using a particular key. Thus, the encrypted data is accessible only if you own the key. Both consumers and businesses should be careful about data security due to the increasing number of data violation cases.

If you want to consider innovative security solutions, you can maintain AES standards. Keep your data protected and safeguard your customer details.

AES Uses Different Encryption Algorithms for Data Protection

·   ShiftRows- It is a method where the rows of the data matrix shift multiple times to stick to an AES pattern.

·   AddRoundKey- It involves using a round key to the output.

·   SubBytes- The algorithm uses an S-box or substitution table to replace every byte in the data with the relevant byte.

·   MixColumns- It is a method, which involves using a fixed matrix for combining data matrix columns. It can manipulate the column’s bytes with a function.

AES- What Are the Main Features of the Cyber Security Standard?

    • The AES operates on byte data and not bit data.

    • AES works mainly on the substitution–permutation network found in DES algorithms

    • The key length for data encryption varies with the number of rounds conducted. While the key size is 128 bits, it includes 10 rounds. On the contrary, if the key size is 192 bits, there are 12 rounds.

    • The AES takes up a single key initially and expands it later to multiple keys.

Symmetric Block Cipher – The Technology For AES

The US government uses symmetric block cipher for classified data protection. Symmetric cryptography uses a shared key to access the message encoded between the entities. The key cipher is sent to the receiver for message decryption. By emulating the pad system, the encryption technology safeguards the message coming from any unauthorized access. The symmetric block cipher turns out a key cipher used once with a pad system. Those who do not have the key will not be able to identify the encrypted data or message. 

However, you should not confuse block ciphers with stream ciphers. In the former one, data in blocks is encrypted. Stream ciphers are capable of encrypting only 1 byte within a particular timeframe. These encryption technologies have different use cases and implementations.

Plaintext data converts into ciphertext using block ciphers. The block size varies with the encryption scheme and appears in octaves (such as 128-bit blocks). Unless the length is a multiple of 8, the padding facilitates blocks. For example, there must be 2 blocks to conduct 128-encryption.

Modes Of Symmetric Block Ciphers

There are multiple block cipher operation modes to activate the encryption of different blocks of vast data.

In the case of a confidentiality-only mode, the focus is on maintaining interactions between the private parties. The mode comprises-

Cipher block chaining that derives the previous block’s ciphertext with an XOR operation. 

Electronic codebook is another option where blocks are formed from plaintext messages. Each block has separate encryption, and ECB never conceals data patterns. As it does not have diffusion, it is not recommendable for security frameworks.

Authenticated encryption is another mode for block ciphers to keep the data confidential. This model also has subcategories like GCM and SIV. Galois Counter mode involves using an incremental counter for a hash generation over a binary field. It creates codes for message authentication for decryption and encryption. Synthetic Initialization Vector is another category where a header or plaintext input is used to allow authenticated encryption.


Symmetric key encryption is a technology used for AES that ensures ultimate data protection. However, AES will undergo a transformation in the future. For instance, key sizes would become larger for better protection of your data. Advanced Encryption Standard has already been implemented in software and hardware for sensitive data encryption. Besides, the block cipher is also useful for cyber security and government computer security. Algorithms and symmetric keys of block ciphers can deal with efficient data encryption.

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