difference between symmetric and asymmetric cryptography pdf

Difference between symmetric and asymmetric cryptography pdf

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Cryptography concepts

Symmetric vs. Asymmetric Encryption – What are differences?

8 Difference Between Symmetric And Asymmetric Encryption

Difference Between Symmetric and Asymmetric Encryption

Symmetric encryption is a type of encryption whereby only one cryptographic key secrete key is used to both encrypt and decrypt electronic information. The entities communicating through symmetric encryption must exchange the key so that it can be used in the decryption process.

Cryptography concepts

Symmetric Key Encryption: Encryption is a process to change the form of any message in order to protect it from reading by anyone. In Symmetric-key encryption the message is encrypted by using a key and the same key is used to decrypt the message which makes it easy to use but less secure. It also requires a safe method to transfer the key from one party to another. Asymmetric Key Encryption: Asymmetric Key Encryption is based on public and private key encryption technique. It uses two different key to encrypt and decrypt the message. It is more secure than symmetric key encryption technique but is much slower. Attention reader!

Symmetric vs. Asymmetric Encryption – What are differences?

Public-key cryptography , or asymmetric cryptography , is a cryptographic system which uses pairs of keys : public keys which may be known to others , and private keys which may never be known by any except the owner. The generation of such key pairs depends on cryptographic algorithms which are based on mathematical problems termed one-way functions. Effective security requires keeping the private key private; the public key can be openly distributed without compromising security. In such a system, any person can encrypt a message using the intended receiver's public key , but that encrypted message can only be decrypted with the receiver's private key. This allows, for instance, a server program to generate a cryptographic key intended for a suitable symmetric-key cryptography , then to use a client's openly-shared public key to encrypt that newly generated symmetric key. The server can then send this encrypted symmetric key over an insecure channel to the client; only the client can decrypt it using the client's private key which pairs with the public key used by the server to encrypt the message. With the client and server both having the same symmetric key, they can safely use symmetric key encryption likely much faster to communicate over otherwise-insecure channels.

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. A comparison between symmetric and asymmetric key encryption algorithm based decryption mixnets Abstract: This paper presents a comparison between symmetric and asymmetric key encryption algorithm based decryption mixnets through simulation. Mix-servers involved in a decryption mixnet receive independently and repeatedly encrypted messages as their input, then successively decrypt and shuffle them to generate a new altered output from which finally the messages are regained. Thus mixnets confirm unlinkability and anonymity between senders and the receiver of messages.


PDF | Internet and networks application are growing very fast, so the need to Comparison of Symmetric and Asymmetric Cryptography with Existing Vulnerabilities and Countermeasures should be distributed before transmissi​on between.


8 Difference Between Symmetric And Asymmetric Encryption

In a simple word, asymmetric encryption is more secure than symmetric encryption. Information security has grown to be a colossal factor, especially with modern communication networks, leaving loopholes that could be leveraged to devastating effects. This article presents a discussion on two popular encryption schemes that can be used to tighten communication security in Symmetric and Asymmetric Encryption. In principle, the best way to commence this discussion is to start from the basics first. Thus, we look at the definitions of algorithms and key cryptographic concepts and then dive into the core part of the discussion where we present a comparison of the two techniques.

Public-key cryptography

As you work with cryptographic tools and services, you are likely to encounter a number of basic concepts. Nonsecret data that is provided to encryption and decryption operations to add an additional integrity and authenticity check on the encrypted data. Typically, the decrypt operation fails if the AAD provided to the encrypt operation does not match the AAD provided to the decrypt operation.

Difference Between Symmetric and Asymmetric Encryption

The basic difference between these two types of encryption is that symmetric encryption uses one key for both encryption and decryption, and the asymmetric encryption uses public key for encryption and a private key for decryption. This is said to be the simplest and best-known encryption technique. As discussed already, it uses one key for both encryption and decryption. This type of encryption is relatively new as compared to symmetric encryption, and is also referred to as public-key cryptography. While both of these have their own pros and cons, asymmetric encryption is definitely a better choice from the security perspective. Get in touch with us now! Alerts Events DCR.

While communicating on an unsecured medium like the internet, you have to be careful about the confidentiality of the information you are sharing with other. The are two techniques use to preserve the confidentiality of your message, Symmetric and Asymmetric Encryption. The fundamental difference that distinguishes symmetric and asymmetric encryption is that symmetric encryption allows encryption and decryption of the message with the same key. On the other hand, asymmetric encryption uses the public key for the encryption, and a private key is used for decryption. To acknowledge some more differences between symmetric and asymmetric encryption have a look at the comparison chart shown below. Asymmetric encryption uses a different key for encryption and decryption.

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2 comments

  • Liam H. 21.04.2021 at 21:27

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  • Albertine R. 26.04.2021 at 08:37

    Public-key cryptography, or asymmetric cryptography, is a cryptographic system that uses pairs of keys: public keys, which may be disseminated widely, and private keys, which are known only to the owner.

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