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      • KCI등재

        DRM 시스템에서 해쉬체인과 세션키 교환을 이용한 암호화 기법에 관한 연구

        박찬길,김정재,이경석,전문석,Park, Chan-Kil,Kim, Jung-Jae,Lee, Kyung-Seok,Jun, Moon-Seog 한국정보처리학회 2006 정보처리학회논문지 C : 정보통신,정보보안 Vol.13 No.7

        본 논문에서는 기존의 암호화 방법보다 안전한 키를 생성하는 해쉬체인 알고리즘을 제안하며, 해쉬체인 알고리즘 기법을 통해 생성한 각각의 키를 각각의 블록에 적용한 암호화 방법을 사용하여 기존의 시스템보다 보안성이 높은 암호화 방법을 제안한다. 또한 사용자 인증기법을 통해 사용자를 유/무선으로 인증한 후, 키 분할 기법을 이용하여 분할된 키를 안전하게 전송하는 방법과 클라이언트에 키가 유출되어도 완전한 키를 얻지 못하도록 하는 세션키 분할 기법을 제안한다. 제안한 시스템을 설계하고 구현한 후 성능 평가를 위해 다양한 크기의 디지털콘텐츠 파일을 이용하여 실험을 수행하였으며, 제안한 시스템이 기존 시스템에 비해 안전한 키 전송을 할 수 있었고, 키 유출에도 전체 데이터를 복호화 할 수 없도록 암호화 하였다. 또한 클라이언트 시스템에서 비디오 데이터 파일 재생 시 암호화 복호화 시간은 기존 방법과 유사함을 확인하였다. This is devoted to first, to propose a hash chain algorithm that generates more secure key than conventional encryption method. Secondly, we proposes encryption method that is more secure than conventional system using a encryption method that encrypts each block with each key generated by a hash chain algorithm. Thirdly, After identifying the user via wired and wireless network using a user authentication method. We propose a divided session key method so that Although a client key is disclosed, Attackers cannot catch a complete key and method to safely transfer the key using a divided key method. We make an experiment using various size of digital contents files for performance analysis after performing the design and implementation of system. Proposed system can distribute key securely than conventional system and encrypt data to prevent attacker from decrypting complete data although key may be disclosed. The encryption and decryption time that client system takes to replay video data fie is analogous to the conventional method.

      • KCI등재

        “공감과 사유의 첫 번째 접촉”: 「컴벌랜드의 늙은 거지」의 스토아주의

        박찬길 19세기영어권문학회 2020 19세기 영어권 문학 Vol.24 No.1

        This paper is an attempt to understand Wordsworth’s “Old Cumberland Beggar” with reference to Stoicism. This poem has always been controversial among Wordsworth scholars with its direct comments on the contemporary poor relief system. Historicist scholars did not like the poem because they found no sign of a genuine sympathy for the poor in Wordsworth’s narration of an old vagrant beggar nor any practicable suggestion for his well-being as a member of the community. Some other scholars, on the other hand, appreciated Wordsworth’s characterization of the old man, particularly the aesthetic quality of the old man’s solitude in nature. Their aestheticism was more or less founded upon the “One-Life philosophy” which Coleridge have supposedly invented and gave to Wordsworth in Quantock Hills in 1797-98. My argument is that “Old Cumberland Beggar” is best understood when it is placed in the context of the Stoicism which Wordsworth was familiar with since his Hawkshead years. The old man’s solitude in Nature, for example, does not imply alienation because he is “stoically” in sympathy with the “mountain birds” with whom he inadvertently shared what he had earned from the village. The village people’s ‘habitual’ charity on the old man does not show any particular emotional attachment to him, which, however, does not necessarily mean that their commitments are self-centered. “That after joy” they have after the charity brings about an implicit awareness that their actions were also “stoically” in sympathy with a principle in nature. Stoicism calls it the “Active Principle” pervading the whole nature by which all the apparently unrelated events in the world are made responsive to the Rationality of Nature. The “first mild touch of sympathy and thought” from the beggar is also instrumental in developing the moral sensibility of many people who have been witnessing the “use” of private charity in the village. The stoic concept of oikeiōsis, the process of “appropriating” to one’s own what is in line with the Natural Rationality, is useful too for explaining the wholesome effect of the beggar upon the people who indirectly committed themselves to the charitable actions. This stoic interpretation helps us to understand both the characterization of the old beggar and the poet’s political polemics more consistently within a single unified interpretative space. The stoic reading of “Old Cumberland Beggar” clearly shows that it is not only the finale of his commitments to the humanitarian poetry of social protest, but also the very beginning of the new poetic spirit that he was due to embody in The Prelude and The Excursion in the following years. This paper is an attempt to understand Wordsworth’s “Old Cumberland Beggar” with reference to Stoicism. This poem has always been controversial among Wordsworth scholars with its direct comments on the contemporary poor relief system. Historicist scholars did not like the poem because they found no sign of a genuine sympathy for the poor in Wordsworth’s narration of an old vagrant beggar nor any practicable suggestion for his well-being as a member of the community. Some other scholars, on the other hand, appreciated Wordsworth’s characterization of the old man, particularly the aesthetic quality of the old man’s solitude in nature. Their aestheticism was more or less founded upon the “One-Life philosophy” which Coleridge have supposedly invented and gave to Wordsworth in Quantock Hills in 1797-98. My argument is that “Old Cumberland Beggar” is best understood when it is placed in the context of the Stoicism which Wordsworth was familiar with since his Hawkshead years. The old man’s solitude in Nature, for example, does not imply alienation because he is “stoically” in sympathy with the “mountain birds” with whom he inadvertently shared what he had earned from the village. The village people’s ‘habitual’ charity on the old man does not show any particular emotional attachment to him, which, however, does not necessarily mean that their commitments are self-centered. “That after joy” they have after the charity brings about an implicit awareness that their actions were also “stoically” in sympathy with a principle in nature. Stoicism calls it the “Active Principle” pervading the whole nature by which all the apparently unrelated events in the world are made responsive to the Rationality of Nature. The “first mild touch of sympathy and thought” from the beggar is also instrumental in developing the moral sensibility of many people who have been witnessing the “use” of private charity in the village. The stoic concept of oikeiōsis, the process of “appropriating” to one’s own what is in line with the Natural Rationality, is useful too for explaining the wholesome effect of the beggar upon the people who indirectly committed themselves to the charitable actions. This stoic interpretation helps us to understand both the characterization of the old beggar and the 워즈워스(Wordsworth), 스토아철학(Stoicism), 공감(Sympathy), 구빈법(The Poor Law), 한 생명철학(One-Life Philosophy), 「컴벌랜드의 늙은 거지」(“Old Cumberland Beggar”)

      • KCI등재

        FinTech를 위한 다자간 컴퓨팅 암호기술

        박찬길,최영화,이철희 (사)디지털산업정보학회 2019 디지털산업정보학회논문지 Vol.15 No.1

        FinTech has expanded to the extent that not only businesses but almost everyone can feel the impact. The spread of the scope of use has introduced a variety of new financial services that are changing the way we live. In these environments, it is important to develop reliable security measures to protect against cyber attacks. The number of mobile financial transactions in the financial sector is also increasing, making security vulnerable. In this study, we studied security through mutual authentication method that can safely handle financial security and focused on FinTech’s security processing through multi-party mutual authentication method that strongly prevents leakage of information even in the event of continuous and sophisticated attacks.

      • KCI등재후보

        낭만주의와 제국: 워즈워스의 경우

        박찬길 영미문학연구회 2004 안과 밖 Vol.16 No.-

        This essay is to show the British Romanticism’s contribution to the making of British imperialism through a Wordsworth’s case. One way of doing it is to pay a close attention to the parallelism that exists between Wordsworth’s poetic career and Napoleon’s political career. One important finding from such a juxtaposition is that both Napoleon and Wordsworth made their major professional careers after their alleged apostasy from the revolutionary ideals that they had once supported with enthusiasm. Another finding is that their ‘apostasy’ was actually nothing but the replacement of a cosmopolitan republicanism with a nationalistic imperialism. The body of this essay are devoted to the elaboration of such replacement. First of all, Wordsworth’s mental conflict between his republican sympathy towards the Revolutionary France and his natural attachment to his native country is examined in the context of the semantic history of patriotism. Secondly, “Michael,” one of Wordsworth’s pastoral poems, is presented as Wordsworth’s poetic attempt to set the paradigm of English national character particularly in relation to his strong attachment to the “primordial” land. Thirdly, some passages from “The Pedlar,” “The Prospectus to the Recluse” and “The Excursion” are examined to explain the way Wordsworth’s nationalistic awakening is gradually pushed into the expansionist ideology of British imperialism. The final conclusion of the essay is that Wordsworth’s nationalistic tendency was made into a very unnerving proclamation of an imperialistic preacher through the quintessentially Wordsworthian poetics that would transfigure the individual experience of ‘I’ into that of a universal Man.

      • 「폐가」(廢家, 'The Ruined Cottage') - 한 전쟁미망인의 사회사(社會史)

        박찬길 이화여자대학교 한국문화연구원 1995 韓國文化硏究院 論叢 Vol.66 No.1-3

        The Ruined Cottage has long been taken as the first major poetic achievement that betokens Wordsworths grow as a poet. The mainstream Wordsworthian critics appreciation of "The Ruined Cottage" as a work of art is in fact based on the implicit assumption that Wordsorths political awareness in inimical to his poetic genius, for their preference of "The Ruined Cottage" to Salisbury Plain Poems has much to do with the Pedlars distinctive narrative tactic which enables the most apolitical rendering of the most political issues at the time. This paper challenges such an underlying assumption by rereading "The Ruined Cottage" as a story of an impoverished war widow of the 1970s England. What is intended in this historically informed reading of "The ruined Cottage" is not to undermine its entirely deserving status in Wordsworthian canon but simply to remind ourselves that the seemingly natural process of Margarets moral and physical deterioration is in fact socially determined and that its original poetic appeal to the contemporary readers derived not so much from the pedlers transcendental understanding of human suffering as from Is human, sympathetic response to a war widows socially rectifiable misery. Eventually, such a reading will suggest that the modern appreciation of "The Ruined Cottage n sot just an expression of its poetic merit, but more significantly another piece of evidence that testifies to ideological orientation of the of the modern critical practice.

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