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8 Strongest Data Encryption Algorithms in Cryptography

  • Hrithik Saini
  • Mar 11, 2022
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Secure data transport is critical for PC users and company owners. Its importance is realized when security flaws cost firms millions of dollars when safe data transit is ignored.


Gartner predicts that global security investment and risk management would top $150 billion in 2021. While there are other technologies available to purchase to safeguard your data, encryption is one component of information security that every client computer should be familiar with.


People learned how to crack codes throughout time, and the encryption process became more sophisticated to ensure that the communication remained confidential. In this part, we will understand how encryption works as well as the most powerful data encryption algorithms in cryptography.



How Does Encryption Work?


Encryption is a method of making data—messages or files—unreadable, guaranteeing that only an authorized individual has access to that information. Encryption scrambles data with complicated methods and decrypts it with a key given by the message sender. 


Encryption guarantees that information remains private and secret, whether it is stored or transmitted. Unauthorized access to the data will result in a jumbled array of bytes. Here are some key encryption terminology you should be familiar with:


  1. Algorithm


Algorithms, often known as cyphers, are the principles or guidelines for the encryption process. The efficiency of the encryption is determined by the key length, performance, and characteristics of the encryption system in use.


  1. Decryption


The process of transforming incomprehensible ciphertext to recoverable data is known as decryption.


  1. Keys


An encryption key is a randomized sequence of bits that is utilized to encode and decode data. Each key has its own personality, and longer locks are more liable to maintain. Private keys often have lengths of 128 or 256 bits, whereas public keys have lengths of 2048 bits.


Also Read | Introduction to Application Security



Strongest Data Encryption Algorithms in Cryptography

8 strongest data encryption algorithms in cryptography :Blowfish Encryption AlgorithmTriple-DES AlgorithmTwo Fish Encryption AlgorithmIDEA Encryption AlgorithmAdvanced Encryption Standard (AES) AlgorithmRSA Security AlgorithmMD5 Encryption AlgorithmHMAC Encryption Algorithm

Strongest Data Encryption Algorithms in Cryptography

Today, data encryption methods are widely used in File Transfer Protocol (FTP) transfers and computer systems to provide secure transmissions.


When the algorithms are often used for transmissions, the data is first changed into uncrackable ciphertext and delivered in this format, after which the recipient decodes the ciphertext back into its original format using a secret key or a password.


If an attacker gains access to the file before it reaches the final machine, they will be unable to read it since it is encrypted. Let’s discuss some amazing but strongest data encryption algorithms.


  1. Blowfish Encryption Algorithm


Bruce Schneier invented the first symmetric encryption method, Blowfish, in 1993. Symmetric key encryption encrypts and decrypts data with a single encryption key.


The encryption algorithm uses confidential material and the symmetric encryption key to convert the sensitive information to ciphertext. Blowfish, along with its sequel Twofish, were in contention to supersede the Data Encryption Standard (DES) but were unable to do so due to the short size of its blocks.


Blowfish use an embedding capacity of 64, which is deemed completely insecure. Twofish addressed this problem by implementing a 128-bit block. Blowfish is significantly quicker than DES, but it sacrifices speed for security.


  1. Triple-DES Algorithm


Triple DES was created to substitute Data Encryption Standard (DES) algorithm, which hackers later learnt to easily defeat. Triple DES was formerly the industry's preferred benchmark and the most extensively utilized symmetric algorithm.


Triple DES employs three separate keys of 56 bits each. Although the overall key length is 168 bits, experts think that 112-bit key strength is more precise. Despite being gradually phased out, Triple DES has mostly been supplanted by the Advanced Encryption Standard (AES).


  1. Two Fish Encryption Algorithm


Twofish is a symmetric encryption algorithm with 128-bit block size and a changeable key of 128, 192, or 256 bits. This encryption technique is designed for 32-bit multiprocessors and is suitable for use in both hardware and software components.


It is open-source (unlicensed), patented invention, and free to use. Blowfish, an early block cypher, is comparable to Twofish. It also has sophisticated features that may be used to supersede the Data Encryption Standard (DES) algorithm.


In principle, Twofish is protected from brute-force attacks because of its large block size, as such an assault would take a massive amount of computing power to decrypt a 128-bit encryption key.


  1. IDEA Encryption Algorithm


The International Data Encryption Algorithm (IDEA) was formerly a licensed free and open block cypher that was meant to eliminate the Data Encryption Standard (DES). DEA, formerly known as the Improved Proposed Encryption Standard (IPES)I, is a minor improvement to the Proposed Encryption Standard (PES).


IDEA employs comparable procedures for encrypting and decrypting, with some round key inversion. It is composed of eight phases and operates on 64-bit blocks with a 128-bit key. IDEA had weak buttons until its key scheduling was updated, and it may need to be revised again in the future.


Also Read | Applications of Cryptography


  1. Advanced Encryption Standard (AES) Algorithm


The Advanced Encryption Standard is the most common and extensively used symmetric encryption algorithm that is likely to be encountered nowadays (AES). It has been discovered to be at least six times quicker than triple DES.


Because the key size of DES was too tiny, a replacement was required. As computational power improved, it was assumed to be susceptible to a comprehensive key search assault. Triple DES was supposed to alleviate this disadvantage, but it was discovered to be sluggish.


AES is iterative encryption, as opposed to a Feistel cipher. It is built on the 'substitution–permutation network.' It is made up of a sequence of connected operations, some of which require replacing inputs with certain outputs (substitutions) and others which entail moving bits about (permutations).


  1. RSA Security Algorithm


RSA is a public-key encryption method that is widely used to encrypt data delivered over the internet. It is also one of the mechanisms used by PGP and GPG applications. Due to the usage of a pair of keys, RSA has characterised an asymmetric algorithm, as opposed to Triple DES. 


You have a public key for encrypting the communication and a private key for decrypting it. The result of RSA encryption is a massive amount of gibberish that takes attackers a long time and a lot of computer power to decipher.


  1. MD5 Encryption Algorithm


MD5 (Message Digest Method 5) is a strong cryptographic technique that generates a 128-bit digest from any length text. The digests are represented as 32-digit hexadecimal digits.


Ronald Rivest created this technique in 1991 to allow for digital signature authentication. It was afterwards applied to several different frameworks to improve security indices.


The digest size is always 128 bits, and owing to hashing function recommendations, a little change in the input sequence produces a completely distinct digest. This is critical to avoid similar hash creation, often known as a hash collision.


  1. HMAC Encryption Algorithm


HMAC is an abbreviation for hash message authentication code, and it is used to verify the message's impartiality and validity.


The technique made use of two hash computations as well as a cryptographic key. This specification is similar to most electronic certificates, with the exception that encryption keys are being used in HMAC and asymmetrical keys are often used in digital signatures.


Also Read | Cryptanalysis in Cryptography


Why Is Data Encryption Necessary?


If you're curious why organizations need to employ encryption, take into account the following reasons listed below:


  • Authentication: Public key encryption demonstrates that the origin server of a website possesses the shared secret and was thus lawfully granted an SSL certificate. This is a crucial consideration in a world when there are so many bogus websites.


  • Privacy: Encryption assures that no one except the intended recipient or data controller may read or access communications or data. This safeguard stops fraudsters, hackers, internet companies, spammers, and even government agencies from acquiring and reading sensitive information.


  • Regulatory Compliance: Many sectors and government agencies have standards in place requiring firms who interact with consumers' personal information to maintain that data encryption. HIPAA, PCI-DSS, and the GDPR are a few examples of compliance with legal and regulatory requirements that need encryption.


  • Security: Whether the information is idle or in transit, encryption safeguards & secure it from data breaches. Even if a company gadget is misplaced or stolen, the data contained on it is likely to remain secure provided the hard disc is adequately secured.


Also Read | Data Security


The Future of Data Encryption


Today's government agencies generate, analyse, and transfer data at an unparalleled and constantly increasing rate. To maintain that much information protected it's at rest, in use, or transit—the government should not only deploy today's most dependable encryption technology, but also be prepared to accept tomorrow. 


As external and adversary threats evolve, interesting and innovative encryption technologies such as post-quantum cryptography, quantum key distribution, and homomorphic encryption will be critical to protecting the nation's cybersecurity.

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