28 Jun QUANTUM CRYPTOGRAPHY
Quantum Cryptography Conclusion Chapter
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Conclusion
Quantum cryptography usage by many organisations is on rise especially the banks and military because it usually offers the solution to the information distribution problems that are presented by classical cryptography. This is mainly because the quantum computations involved in sending the data provides a succinctly secure way of transmitting messages or information from the sender to the receiver. However, the conventional cryptography techniques usually needs the settlement of a secret key prior to message exchange over a conventional channel. Alternatively the quantum cryptography technique is more secure since it is responsible of allowing both the senders and the receivers to embark on the generation of a secret key through transmission of specially prepared photons over a quantum channel. Therefore, the secrecy is usually based on the fact that it is not possible for an eavesdropper to be able to observe the photons without disturbing their quantum-mechanical state. Hence, any attempt of eavesdropping is actually detected immediately.
Moreover, various issues are always addressed prior to the usage of the quantum cryptography into the mainstream as well as becoming a crucial part of personal computing together with the security technology. In addition, currently the quantum cryptography requires large as well as custom built infrastructure in an environment that is very controlled thereby requiring complicated quantum logic circuits. However, despite the building of such facilities being not economically convenient it offers a greater advantage in terms of security which complements the involved initial cost of setting up the system. Therefore, there is need for more research in the future to make this method more affordable and economically feasible. Moreover, the quantum cryptography requires the availability of proper operation of the circuitry. Additionally, the other issue which is explicitly related to the technology is mainly that this program has to be run many times while the programs output has to be analyzed in order to determine its the correct and exact value.
Moreover, the other issue with the use of the quantum cryptography is that the use of repeaters is actually not possible. Also it is not possible to sent the secured messages for a distance that is over 70 km using this technique which is aided by the optical fibres and wireless networks. Therefore, the need of establishing a “quantum network” becomes necessary since it would allow quantum cryptography to be able to cover cities and eventually the entire globe. However, this will undoubtedly need the putting in place the suitable channels for transmit messages over large distances. Hence, the ability of scaling up this technology for mass deployment for the next generation of computer remains to be seen, but very potential according to the already made developments. Thus, this situation presents the greatest opportunity for future research in order to hasten the embracing of the global quantum network where it will be possible to securely send information globally.
In addition, quantum cryptography offers greater advantages that have been identified throughout the discussion of the project objectives and research questions. This is mainly because it usually provides the most secured way of communication between the two legitimate users without compromising the security of the messages, mainly because it stops unauthorized users to access the secured information without any compromise unlike the traditional cryptographic methods where the information can be decoded easily by third parties. Hence, any message transferred between users as part of the communication process cannot be decoded if the message is encoded by the key which is equal in length of the message which is only known to the legitimate users. However, despite the fact that this approach seems efficient the problem usually occurs in transferring the keys to remote users. Also, the classical methods of cryptography are not able to transfer key secretly over the communication channels, hence this was the main reason the idea of quantum physics and informatics came in order to provide secured ways of transferring messages thereby enabling communication over a long range by secured key over the communication channel.
Moreover, the security usually achieved in communication through the application of the quantum cryptography technique is most effective due to the following two reasons: first, if quantum cryptographic methods are used it is absolutely certain that the information transmitted between the two parties will be unaltered. Therefore, it is undoubtedly very hard to intercept the sent data without being detected by the two users who are communicating. Secondly, it is easily possible to predict the quantum key. Also, the fact of intervention between the legitimate users is usually established whenever which ensures that both of the communicating parties are guaranteed of the security of the information they are transmitting.
Therefore, the evaluation of the quantum cryptography in comparison with other conventional cryptography reveals that it is undoubtedly the most secure method due the advantages it provides with the main one been the level security it offers to the communication channels and its urgency of reporting an interception. Hence, the best solution for secured communication so far, which has enabled its extensive application in banks and military as well others institutions that transmit sensitive information.
However, the main of this research was mainly to evaluate the extent of security achieved by the use of the cryptography. Hence, this led to the setting of various research objectives and research questions that have been adequately met throughout the research. For instance, it has been possible to explicitly evaluate the advantages of the cryptography method while at the same time analysing it detailed application as well as comparing it with other data security methods. Apart from this a detailed analysis of its pros and cons have also been achieved together with the detailed applications of this method.
In addition, considering the cases that have been evaluated that concern the applications of the quantum cryptography it is evident that this method has however been able to provide a great deal of security in the transfer of sensitive information. For instance, the use of this method by the banks is a clear indication of how this method is capable of safeguarding such a sensitive system where huge sums of money get transferred on daily basis both locally and internationally.
Moreover, the case of cryptography application in the military ensure the security of its citizens is guaranteed. This is due to the fact that there is certainty that the information transferred cant be accessed by any other person other than the intended. This is very crucial because the privacy and sensitivity required in handling a countrys security information which needs to be completely blocked for accessibility by people who may have spiteful intentions thereby posing threat to the security of the entire nation. This also indicates the reliability of this method since the cases of interception in the above studied cases are very rare because attempts are detected early before their mission are actualised. Therefore, future research on making this method affordable is inevitable in order to ensure that it is embraced by more organisations so that they can also enjoy the security of data transfer without the risk of interception.
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