Encryption vs Encoding | Infosec (2024)

Cryptography

Encryption and decryption

Encryption is the process of converting plaintext to encrypted text. Since encrypted text cannot be read by anyone, encrypted text hides the original data from unauthorized users. The process entailing encryption and decryption together is called cryptography. The unencrypted data is called plaintext, while the encrypted data is called ciphertext. The algorithms used to encrypt and decrypt messages are called encryption algorithms.

Decryption is the process of converting encrypted data to plaintext. Basically, it is the reverse of encryption. It is used to decrypt the encrypted data so that only an authorized user can access and read the data. The authorized user uses a pre-shared secret key for converting encrypted data to plaintext.

Difference between encryption and decryption

EncryptionDecryptionEncryption is a process in which a plaintext message is converted into encrypted form. Decryption is a process in which an encrypted message is converted into its plaintext form.Encryption takes place at the sender’s end. Decryption takes place at the receiver’s end.It converts the plaintext into ciphertext.It converts the ciphertext into plaintext.In encryption, the sender encrypts the data and then sends to the receiver. In decryption, the receiver receives the data (ciphertext) and then converts it into plaintext.

Encryption algorithms

There are many algorithms available for encryption and decryption. A few algorithms are symmetric, while others are asymmetric.

Some of the widely used encryption algorithms:

  1. Triple DES
  2. Twofish encryption algorithm
  3. Blowfish encryption algorithm
  4. Advanced Encryption Standard (AES)
  5. RC4
  6. DSA
  7. Diffie-Hellman
  8. RSA (Rivest-Shamir-Adleman) security

Cryptanalyst

A cryptanalyst is someone who analyzes and decrypts the encrypted data, even without having knowledge of the decryption key. The analysis of cryptosystem, ciphertext and ciphers is called cryptanalysis. Cryptanalysts decode and decipher messages for political, law enforcement and military agencies.

Encoding

Encoding was implemented in 1973 by scholar Stuart Hall. Encoding is the process of converting plaintext data from one form to another. In encoding, we use sequences of characters such as letters, numbers and other special characters into a specialized format for easier transmission.

The major purposes of developing encoding are data transmission, data storage and data compression/decompression. ASCII encoding is the most widely used encoding format.

It has been commonly observed that the Base64 encoding algorithm is used for sending the data. Base64 is very trivial to break, thus making it simple for an attacker to get sensitive data from encoded data. As a good practice, no sensitive data should be sent using encoding.

Decoding

Decoding is the process of extracting the information from encoded data. As the name says, decoding is exactly the reverse process of encoding. Encoding and decoding are widely used in data transfer and for data storage.

Encoding/decoding are altogether a different process and should not be confused with encryption/decryption. Major differences have been highlighted in the below section.

Differences between encoding and encryption

Encoding EncryptionIt is the process of converting plaintext data from one form to another form.It is the process of converting plain text to encrypted (cipher) text.As compared to encryption, encoding is the easier process.As compared to encoding, encryption is the more difficult process.Encoding is easier to implement.Encryption is harder to implement.Encoding is faster than encryption.Encryption is slower than encoding.To decode the encoded data, no key is required.To decrypt the encrypted data, a secret key is required.Anyone can decode the encoded data.Only authorized users (who have secret keys) can decrypt the encrypted data.Encoding is used for maintaining the data usability.Encryption is used for maintaining data confidentiality.

Encryption vs Encoding | Infosec (2)

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Conclusion

Encryption and encoding are both different processes and both have their own purpose in computer systems. If something sensitive needs to be sent over the network, encryption should be used; otherwise, encoding should be the go-to choice. Encryption deals with maintaining confidentiality and integrity of the data, while encoding mostly deals with data compression/decompression.

Sources

  1. Encoding vs Decoding, EDUCBA
  2. Difference between Encryption and Decryption, GeeksforGeeks
  3. Encryption, TechTarget
  4. Hashing vs. Encryption vs. Encoding vs. Obfuscation, Daniel Miessler
  5. Top 8 Strongest Data Encryption Algorithms in Cryptography, Acodez

Posted: September 23, 2020

Encryption vs Encoding | Infosec (3)

Nitesh Malviya

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Nitesh Malviya is a Security Consultant. He has prior experience in Web Appsec, Mobile Appsec and VAPT. At present he works on IoT, Radio and Cloud Security and open to explore various domains of CyberSecurity. He can be reached on his personal blog - https://nitmalviya03.wordpress.com/ and Linkedin - https://www.linkedin.com/in/nitmalviya03/.

Encryption vs Encoding | Infosec (2024)

FAQs

What is the difference between encryption and encoding? ›

Encoding: Reversible transformation of data format, used to preserve the usability of data. Hashing: A one-way summary of data that cannot be reversed and is used to validate the integrity of data. Encryption: Secure encoding of data used to protect the confidentiality of data.

Why do you believe people may confuse encryption with encoding? ›

For example, data can be encoded before being encrypted, which can make it more difficult for an attacker to decrypt the data if they are able to gain access to it. Due to this reason, encryption Vs. encoding is often talked about in cybersecurity, and often both terms are often used interchangeably.

Which of the following is a primary difference between encoding and encryption? ›

Encryption uses a cryptographic key as one of the inputs to a cryptographic algorithm. Encoding does not use a cryptographic algorithm or require the use of a cryptographic key.

Is Base64 encoding or encryption? ›

Base64 is a binary to a text encoding scheme that represents binary data in an American Standard Code for Information Interchange (ASCII) string format. It's designed to carry data stored in binary format across the channels, and it takes any form of data and transforms it into a long string of plain text.

Is encoding faster than encryption? ›

Encoding is faster than encryption. Encryption is slower than encoding. To decode the encoded data, no key is required. To decrypt the encrypted data, a secret key is required.

What is an example of encoding? ›

For example, you may realize you're hungry and encode the following message to send to your roommate: “I'm hungry. Do you want to get pizza tonight?” As your roommate receives the message, they decode your communication and turn it back into thoughts to make meaning.

What is the problem with encryption? ›

However, here are some issues you should be aware of to build your system securely: Cryptography is not solely about encrypting data. Distributing the secret key across various components in the backend for data decryption can lead to key compromise.

What is the encryption controversy? ›

The Clipper Chip controversy sparked a broader public debate on the balance between privacy and national security. Advocates for strong encryption argued that any backdoor or weakened encryption would create vulnerabilities that malicious actors could exploit.

Is encryption the process of encoding a message? ›

In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot. In cryptography, plaintext usually means unencrypted information pending input into encryption algorithms.

What is the difference between encryption and decode? ›

Encryption is the process by which a readable message is converted to an unreadable form to prevent unauthorized parties from reading it. Decryption is the process of converting an encrypted message back to its original (readable) format. The original message is called the plaintext message.

What are the 2 types of encryption and which one is better to be used? ›

There are two types of encryption in widespread use today: symmetric and asymmetric encryption. The name derives from whether or not the same key is used for encryption and decryption.

What is an example of encoding in cyber security? ›

It is a helpful method in transferring data by preserving its integrity. It doesn't require any keys, but only works with an algorithm which is used to decode the encoded data. Examples of encoding would be ASCII, UNICODE and BASE64.

Do encoding and encryption do the same thing? ›

The encryption technique aims at making data unreadable and hard to decode. If you think about it for a moment, it is the opposite reason of pure encoding: encoding aims at making data as much understandable as possible across systems while encryption tries to make it undecipherable, unless you are authorized.

Is Base64 encoding still used? ›

Base64 is also widely used for sending e-mail attachments, because SMTP – in its original form – was designed to transport 7-bit ASCII characters only. Encoding an attachment as Base64 before sending, and then decoding when received, assures older SMTP servers will not interfere with the attachment.

How do I know if a key is Base64-encoded? ›

Simply, we can use a pattern and match it against the desired string. In this test method, we define a regular expression Pattern named BASE64_PATTERN using the Pattern. compile() method to make sure a given string conforms to the Base64 encoding format.

What is the difference between encoding and encoding? ›

Encoding aims to transform data into a specific format for efficient transmission or storage. Whereas decoding is about converting encoded data back to its original format.

What is the main difference between encryption and decryption? ›

Encryption is the process by which a readable message is converted to an unreadable form to prevent unauthorized parties from reading it. Decryption is the process of converting an encrypted message back to its original (readable) format. The original message is called the plaintext message.

What is the difference between encryption and cryptography? ›

Cryptography vs encryption: Cryptography is the science of concealing messages with a secret code. Encryption is the way to encrypt and decrypt data. The first is about studying methods to keep a message secret between two parties (like symmetric and asymmetric keys), and the second is about the process itself.

Is Morse code encoding or encryption? ›

In general Morse code is a form of encoding and decoding messages. This technique is called Cryptography. Cryptography is the practice and study of techniques for secure communication in the presence of third parties (called adversaries).

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