The Process of Decrypting the Message - Assignment Example

Cryptography Author Author Affiliation Date Table of Contents Abstract As the technology advances the need for effective tools and applications also grows.... This progress in the technology brings a number of facilities and easiness in every field of life.... However, the technology emergence also presents some problems regarding the user data and information security and privacy....

If the sender utilizes the secret key to encrypt the information or message, the recipient will also use the same key for decrypting the message or information.... An asymmetric encryption algorithm utilizes two keys for encrypting and decrypting the information or the message.... Accordingly, the process is comparatively slower due to the processing of two keys.... However, before implementing both of these techniques simultaneously, ABC institute of research must ensure following objectives have been achieved: The encryption solution must be secure in every aspect The encryption and decryption process must not take a long time and should not put an overhead on the network....

All the computers that will receive the email message are given a copy of the private key which later establishes the message sender.... When using the public key method, the one who sends the message and the receiver are both able to authenticate each other and also protect the message which is usually secret.... How Encryption Technique works Encryption is a process whereby messages are converted into a form that has been created that without decrypting or deciphering, they cannot be read....

the process of encryption employs different methods with a view of ensuring that information in its original and natural format is altered or converted into formats which cannot be read by systems attackers.... Hence encryption is basically viewed at ascertaining that it is only the intended receivers who are able to read the message.... The encryption key in symmetric encryption method is applied both when encrypting and decrypting data....

The intercepted and encrypted special plain text offers specific properties of the message, encryption tool, and the encryption tool.... In addition, Data authenticity is ensured and the message recipient is assured the message is from the correct sender.... This way the attacker knows the exact weakness and therefore takes a shorter time decrypting future intercepted messages.... The figure below demonstrates a basic outline of the cryptography process (Koblitz 2004)....

Based on that, this channel faces very high security risks since if the message is tapped or eavesdropped, the attacker can be in a position to use the shared secret key to either encrypt or decrypt the entire conversation.... Thirdly, due to the fact that it is a shared key, if the sender's key is not known, decrypting the.... With that, if Host A wants to send an encrypted message to B and C, then A will have to provide its key that will be used by B and C in a bid to decrypt the ciphered message....

As a result, a sender can repudiate a previously authenticated message by claiming that the shared secret was somehow compromised by one of the parties sharing the secret.... This paper under the headline 'Public Key Encryption and Digital Signature" focuses on the fact that the primary advantage of public-key cryptography is increased security and convenience because private keys are never transmitted or revealed to anyone....

Tom's MUA formats the message in an Internet e-mail format and uses the Simple Mail Transfer Protocol (SMTP) to send the message to Tom's Mail Server (MTA).... hen transferring an email, the sending MTA (Tom's Mail Server) handles all aspects of mail delivery until the message has been either accepted or rejected by the receiving MTA ((Jane's Mail Server).... In addition, encryption used for encrypting and decrypting messages, various email communication protocols (such as application, network, and transport protocols) for transferring and receiving an email will be also discussed in the paper....