• KIPS Transactions on Computer and Communication Systems
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• v.9 no.8
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• pp.165-170
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• 2020

As the IoT (Internet of Things) era is activated, a lot of information including personal information is being transmitted through IoT devices. For information protection, it is important to perform cryptography communication, and it is required to use a lightweight security protocol due to performance limitations. Currently, most of the encryption methods used in the security protocol use RSA and ECC (Elliptic Curve Cryptography). However, if a high performance quantum computer is developed and the Shor algorithm is used, it can no longer be used because it can easily solve the stability problems based on the previous RSA and ECC. Therefore, in this paper, we designed a security protocol that is resistant to the computational power of quantum computers. The code-based crypto ROLLO, which is undergoing the NIST (National Institute of Standards and Technology) post quantum cryptography standardization, was used, and a hash and XOR computation with low computational consumption were used for mutual communication between IoT devices. Finally, a comparative analysis and safety analysis of the proposed protocol and the existing protocol were performed.

• Journal of Korean Philosophical Society
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• v.130
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• pp.135-159
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• 2014

This article has the purpose of clarifying that Rollo May's existential psychotherapy is based on Kierkegaard's concept of anxiety in philosophical aspects. May makes use of Kierkegaard's concept of anxiety to establish his own existential psychotherapy. May points out that Freud's concept of anxiety is too technical in comparison with Kierkegaard's concept of anxiety. Freudian theory accepting anxiety as the cause of repression overlooks the importance of human relationship which brings about repression. May mentions the presence or absence of object to distinguish fear and anxiety. Kierkegaard and Freud also mention that the presence of object is called fear and the absence of object is anxiety. May interprets anxiety ontologically. Succeeding Kierkegaard's comment on nothing/non-being, May insists that anxiety is the experience of Being affirming itself against Nonbeing. May interprets Kierkegaard's concept of freedom as the possibility or potentiality in terms of similar meaning. May argues that Anxiety is the situation when faced with the problem which human being will achieve his potentiality. Kierkegaard's concept of freedom is also associated with sin at the same time as the freedom associated with anxiety. Succeeding this, May discusses the relation of guilt feeling and anxiety is the flipside of the coin. He understands that guilt feeling is not a pathological symptom but an evidence of the human being's possibility. Kierkegaard's The Concept of Anxiety has a sub-title which is 'a simple psychologically orienting deliberation on the dogmatic issue of hereditary sin'. This shows that he understood the relationship between anxiety and guilt as dilemma that can not be separated. Through this study, I want to clarify that May's concept of anxiety which is the most important concept in his existential psychotherapy, is derived from Kierkegaard's concept of anxiety.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.8
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• pp.1044-1051
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• 2020

The age of quantum computers is coming soon. In order to prepare for the upcoming future, the National Institute of Standards and Technology has recruited candidates to set standards for post quantum cryptography to establish a future cryptography standard. The submitted ciphers are expected to be safe from quantum algorithm attacks, but it is necessary to verify that the submitted algorithm is safe from quantum attacks using quantum algorithm even when it is actually operated on a quantum computer. Therefore, in this paper, we investigate an efficient quantum gate implementation for binary field multiplication of code based post quantum cryptography to work on quantum computers. We implemented the binary field multiplication for two field polynomials presented by Classic McEliece and three field polynomials presented by ROLLO in generic algorithm and Karatsuba algorithm.

• Journal of Bio-Environment Control
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• v.21 no.3
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• pp.180-185
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• 2012

The objective of this study was carried out to elucidate the effect of LEDs (light emitting diodes) irradiation in relation to early growth and inorganic elements in leaf lettuce (Lactuca sativa L. 'Rollo Rosa'). In morphological changes of leaves, shoot elongation and hypocotyl length showed poor growth in red light irradiation, while the red + blue light irradiation induced shorter plant height and much greater leaf numbers resulting in increased fresh weight. In change of the Hunter's color and SPAD values, lettuce seedlings grown under in red + blue and fluorescent light irradiation had a higher $a^*$ value, otherwise SPAD values were not changed in these light irradiations. Interestingly, relative chlorophyll contents showed 1.8 times increased redness in the treatment of red + blue light irradiation. Inorganic element (N, Ca, Mg, Mn, and Fe) and ascorbic acid contents were increased in lettuce plants grown under LEDs light irradiation compared to those of lettuce grown under the fluorescent light which showed higher P and Mn contents. In conclusion, it is considered that red + blue light irradiation which stimulates growth and higher nutrient uptake in leaf lettuce could be employed in containers equipped with LEDs.