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97級-陳曉琪-改良分散式DRM機制控管P2P即時串流服務
[ 摘要 ]
P2P 傳輸技術目前相當熱門，因為它能同時讓兩個使用者直接分享彼此的檔案，而不用透過第三方(伺服器)；對使用者而言，意謂可以透過網際網路直接由檔案擁有者手中得到最新的資訊，而不用再等待數位內容上傳至伺服器；對網路提供者而言，則意謂不用再浪費多餘的時間成本管理或操作伺服器。除此之外，還有許多因素加速P2P 網路之實用性，這些因素包括可用的頻寬上升、運算能力提高、儲存容量加大及網路資訊激增等。但是，P2P 傳輸技術同時也是惡名昭彰的非法活動溫床，它使得盜版和非法使用變得容易，因此許多使用者利用它來從事違反著作權法的資料交換。
為解決P2P 傳輸架構帶給大眾的不好印象，導入適合P2P 網路之數位權利管理機制(Digital Rights Management, DRM)是可行的，本研究於現有P2P 即時串流傳輸架構上，改良分散式DRM 機制，並導入新型金鑰管理系統。即時串流傳輸架構具有即載即看即丟的特性，能預防數位內容被重複利用，對於本研究所改良之DRM機制具有加強效果；而導入新型金鑰管理系統，使得DRM 機制運作時，惟有使用者缺乏合法解密金鑰時，才會出現警告，其餘時候使用者並不會感受到DRM 機制之控管，因此能提升使用者對於DRM 機制的接受度。
[ 英文摘要 ]
P2P transmission technology is very popular at present, because it can allow two users to share files directly rather than through a third party. For the users, means users can receive the latest information from the owners, and don''t have to wait for digital content uploaded to the server. For the providers, means providers don''t have to waste the extra time and cost to manage the servers. In addition, a lot of factors accelerate the practicability of P2P network, include the increased availability of bandwidth, computing capacity raise, storage capacity expansion and network information is increased. However, P2P transmission technology is also a notorious breeding ground for illegal activities, it makes piracy and illegal use easier, and many users use it in violation of copyright law to engage in the exchange of information.
In order to solve the bad impression of the P2P transmission structure, implement Digital Rights Management (DRM) for P2P network is feasible. This study improved distributed DRM architecture, and implement the novel key management scheme, in the existing P2P live streaming. Live streaming have the characteristic that is downloaded immediately, watched immediately and deleted immediately, to prevent digital content to be reused. Implement the novel key management scheme, makes a warning only when the user there is no decryption key, and the rest of the time, users will not feel the DRM mechanisms of control, so users can upgrade the mechanism for the acceptance.
97級-游婷敬-基於動態群播金鑰管理系統之改良研究
97級-游婷敬-基於動態群播金鑰管理系統之改良研究
[ 摘要 ]
隨著市場的需求，群播通訊技術的應用，如視訊會議和隨選視訊(Video On Demand, VOD)等，而不同的群播通訊技術，有著不同的運作方式，因此群播金鑰管理系統會隨著不同的環境而改變其需求條件。在前人的動態群播金鑰管理系統，主要針對動態的環境下，當成員加入或離開時，管理者能夠有效率的更新金鑰，並且不影響其他成員金鑰，而管理者更新金鑰的計算量為O(1)，但管理者在群播訊息時，卻因中國餘數定理(Chinese Remainder Theorem, CRT) 的群播技術，影響了重新發佈群播訊息時的計算量，並且造成相當大的負擔量。因此本研究將針對金鑰群播訊息重新傳送效率問題的不足，利用不同的群播技術或降低其金鑰的長度來改良，不但使動態群播管理系統保有原先管理者在成員更動時金鑰更新的優點，並降低重新計算其群播訊息時的計算負擔。
[ 英文摘要 ]
With the market demand, the applications of multicast communication technologies such as video conferencing and on-demand video (Video On Demand, VOD), etc. Different multicast communication technologies, there are different mode of operation, so multicast key management system as different environmental conditions and their needs change. In the previous dynamic multicast key management systems, they are mainly for dynamic environment. When members join or leave, managers can efficiently update the key and does not affect the key of the other members, and the calculation that key managers update keys is O (1). But in multicasting message, the multicast technology of the Chinese remainder theorem(CRT) impacts the computation loading of the re-calculate multicast message, Therefore the research will be to improve the lack of transmission efficiency of the multicast message, using of different multicast technology or reduce the length of its keys to improve not only the dynamic multicast management system managers to maintain the original members when the key changes update the advantages and reduce re-calculate the multicast message at the time of the computational loading.
[ 摘要 ]
隨著市場的需求，群播通訊技術的應用，如視訊會議和隨選視訊(Video On Demand, VOD)等，而不同的群播通訊技術，有著不同的運作方式，因此群播金鑰管理系統會隨著不同的環境而改變其需求條件。在前人的動態群播金鑰管理系統，主要針對動態的環境下，當成員加入或離開時，管理者能夠有效率的更新金鑰，並且不影響其他成員金鑰，而管理者更新金鑰的計算量為O(1)，但管理者在群播訊息時，卻因中國餘數定理(Chinese Remainder Theorem, CRT) 的群播技術，影響了重新發佈群播訊息時的計算量，並且造成相當大的負擔量。因此本研究將針對金鑰群播訊息重新傳送效率問題的不足，利用不同的群播技術或降低其金鑰的長度來改良，不但使動態群播管理系統保有原先管理者在成員更動時金鑰更新的優點，並降低重新計算其群播訊息時的計算負擔。
[ 英文摘要 ]
With the market demand, the applications of multicast communication technologies such as video conferencing and on-demand video (Video On Demand, VOD), etc. Different multicast communication technologies, there are different mode of operation, so multicast key management system as different environmental conditions and their needs change. In the previous dynamic multicast key management systems, they are mainly for dynamic environment. When members join or leave, managers can efficiently update the key and does not affect the key of the other members, and the calculation that key managers update keys is O (1). But in multicasting message, the multicast technology of the Chinese remainder theorem(CRT) impacts the computation loading of the re-calculate multicast message, Therefore the research will be to improve the lack of transmission efficiency of the multicast message, using of different multicast technology or reduce the length of its keys to improve not only the dynamic multicast management system managers to maintain the original members when the key changes update the advantages and reduce re-calculate the multicast message at the time of the computational loading.
97級-沈俊宏-基於P2P網路架構下之即時通訊系統離線檔案傳輸機制
97級-沈俊宏-基於P2P網路架構下之即時通訊系統離線檔案傳輸機制
[ 摘要 ]
隨著Internet的發展，人與人之間溝通連繫的管道已從舊有的書信、電話…等，慢慢的轉移到網際網路的世界，而最常被使用的通訊軟體為E-mail、即時通訊軟體…等。這些技術主要以Client-Server架構為主，換言之當Server故障或損壞時，就會造成通訊的中斷或是無法使用，因此利用P2P架構來取代Client-Server架構的情況也愈來愈普遍。但在檔案傳輸方面，即時通訊系統還是只能在傳送端與接收端同時為上線狀態來進行檔案傳輸的動作，在有任一方面離線的情況還是需要依靠Server進行檔案暫存的動作，如此一來導入P2P架構並未完全減輕Server的負擔。本研究中，將P2P即時通訊系統導入檔案傳輸的動作，利用所有Peers的資源分享概念，讓檔案傳輸的動作不限定在傳送端與接收端同時在線的情況下才得以進行。本系統利用JXTA進行開發的動作，在即時通訊系統的檔案傳輸架構上導入P2P機制，利用所有的Peers進行檔案片段暫存與備份的動作，以確保檔案傳輸成功率。
[ 英文摘要 ]
With the development of Internet, communication between people from the pipeline linking the old correspondence, phone ... and so on, slowly shift to the Internet world, and the most commonly used communications software for E - mail, instant messaging software ... and so on. These techniques mainly based Client-Server architecture, in other words when the Server failure or damage, will result in the interruption of communication or unable to used, so the use of P2P architecture to replace the Client-Server architecture is also becoming increasingly common. However, file transfer, the instant messaging system or client can only send and receive on-line client for file transfer status to the action, in the case of any aspect of off-line or need to rely on temporary files Server moves This P2P framework Import Server does not fully alleviate the burden. This study, instant messaging P2P file transfer system into action, using all the Peers of the concept of resource sharing, file transfer so that the action is not limited to sending and receiving end at the same time online client circumstances to proceed. The system uses JXTA development action, in the instant messaging system, file transfer P2P mechanisms into the structure, use of all segments of the Peers to temporary and backup files of the action, to ensure that the success rate of file transfer.
[ 摘要 ]
隨著Internet的發展，人與人之間溝通連繫的管道已從舊有的書信、電話…等，慢慢的轉移到網際網路的世界，而最常被使用的通訊軟體為E-mail、即時通訊軟體…等。這些技術主要以Client-Server架構為主，換言之當Server故障或損壞時，就會造成通訊的中斷或是無法使用，因此利用P2P架構來取代Client-Server架構的情況也愈來愈普遍。但在檔案傳輸方面，即時通訊系統還是只能在傳送端與接收端同時為上線狀態來進行檔案傳輸的動作，在有任一方面離線的情況還是需要依靠Server進行檔案暫存的動作，如此一來導入P2P架構並未完全減輕Server的負擔。本研究中，將P2P即時通訊系統導入檔案傳輸的動作，利用所有Peers的資源分享概念，讓檔案傳輸的動作不限定在傳送端與接收端同時在線的情況下才得以進行。本系統利用JXTA進行開發的動作，在即時通訊系統的檔案傳輸架構上導入P2P機制，利用所有的Peers進行檔案片段暫存與備份的動作，以確保檔案傳輸成功率。
[ 英文摘要 ]
With the development of Internet, communication between people from the pipeline linking the old correspondence, phone ... and so on, slowly shift to the Internet world, and the most commonly used communications software for E - mail, instant messaging software ... and so on. These techniques mainly based Client-Server architecture, in other words when the Server failure or damage, will result in the interruption of communication or unable to used, so the use of P2P architecture to replace the Client-Server architecture is also becoming increasingly common. However, file transfer, the instant messaging system or client can only send and receive on-line client for file transfer status to the action, in the case of any aspect of off-line or need to rely on temporary files Server moves This P2P framework Import Server does not fully alleviate the burden. This study, instant messaging P2P file transfer system into action, using all the Peers of the concept of resource sharing, file transfer so that the action is not limited to sending and receiving end at the same time online client circumstances to proceed. The system uses JXTA development action, in the instant messaging system, file transfer P2P mechanisms into the structure, use of all segments of the Peers to temporary and backup files of the action, to ensure that the success rate of file transfer.
97級-蘇文輝-基於新的金鑰管理建構P2P Botnet
97級-蘇文輝-基於新的金鑰管理建構P2P Botnet
[ 摘要 ]
近年來網路惡意攻擊駭客已經逐漸發展成組織化，形成一股趨利主義的勢力。發送大量垃圾信件、利用阻斷服務攻擊(denial-of-service, DoS)來勒索和點擊詐欺(click fraud)等等相關新聞事件都是未來趨勢的警告訊息。傀儡網路(Botnet)在這些惡意攻擊中，是份量極為重大的角色之一，許多攻擊者都利用傀儡網路來發動這些惡意攻擊以賺取利益。
目前以傀儡網路為主的攻擊變的流行和危險，因此有許多研究會致力於如何偵測、監控和防禦傀儡網路(Botnet)。目前大部分的研究是致力於C&C Botnet的研究，是最早出現、研究的傀儡網路，以Internet Relay Chat(IRC) 網路即時聊天系統為主的傀儡網路，而引導這些研究的成果來應付目前我們面對的威脅是必要的。然而還有許多更進階的傀儡網路會被攻擊者發展出來，我們必需提前去設法瞭解才能知己知彼，例如P2P傀儡網路相較於IRC傀儡網路，因為不存在集中的控制點，因此在對P2P傀儡網路的反制會更困難，因此要防禦要先瞭解攻擊，所以我們想要設法先了解，否則，我們未來在下一代的惡意攻擊仍處於被動的情況。
除了P2P惡意程式的惡意攻擊，也有學者提出以P2P良性Botnet來對抗惡意Botnet的分散式阻斷服務攻擊（Distributed Denial of Service,DDoS），因此良性Botnet的發展也是抵制目前網路上龐大的惡意程式攻擊的方法之一，因此我們導入的新型金鑰管理在P2P Botnet在良性Botnet的領域上是否有幫助，在未來也值得探討。
[ 英文摘要 ]
In the recently many years, Internet malware attack have become better organized and more profitable. Email spam, extortion by denial-of-attack, and click fraud represent something of this emerging trend. “Botnet” is the main cause of these problems, many attackers use it to do these malware attacks.
Because botnet-based attacks become popular and dangerous, security researchers have studied how to detect, monitor and defend against them. Most of the present research has focused on the C&C Botnets that have first occurred in the past, especially the Internet Relay Chat (IRC) based Botnet. It’s necessary to conduct such research so as to deal with the threat we are facing today. However, it’s important to research on the advanced Botnet that be designed by the attacker in the near future – P2P Botnet for example. Otherwise, we will remain susceptible to the future internet malware attacks.
In addition to the malicious attacks of the P2P malware, some academics have suggested to P2P friendly Botnet against distributed denial of service attacks (Distributed Denial of Service, DDoS) of the malicious Botnet. Therefore the development of friendly Botnet is one of the ways to resist the current network of malicious programs attack. We import a new key management in the field of benign Botnet to research into whether it is worth exploring in the future.
[ 摘要 ]
近年來網路惡意攻擊駭客已經逐漸發展成組織化，形成一股趨利主義的勢力。發送大量垃圾信件、利用阻斷服務攻擊(denial-of-service, DoS)來勒索和點擊詐欺(click fraud)等等相關新聞事件都是未來趨勢的警告訊息。傀儡網路(Botnet)在這些惡意攻擊中，是份量極為重大的角色之一，許多攻擊者都利用傀儡網路來發動這些惡意攻擊以賺取利益。
目前以傀儡網路為主的攻擊變的流行和危險，因此有許多研究會致力於如何偵測、監控和防禦傀儡網路(Botnet)。目前大部分的研究是致力於C&C Botnet的研究，是最早出現、研究的傀儡網路，以Internet Relay Chat(IRC) 網路即時聊天系統為主的傀儡網路，而引導這些研究的成果來應付目前我們面對的威脅是必要的。然而還有許多更進階的傀儡網路會被攻擊者發展出來，我們必需提前去設法瞭解才能知己知彼，例如P2P傀儡網路相較於IRC傀儡網路，因為不存在集中的控制點，因此在對P2P傀儡網路的反制會更困難，因此要防禦要先瞭解攻擊，所以我們想要設法先了解，否則，我們未來在下一代的惡意攻擊仍處於被動的情況。
除了P2P惡意程式的惡意攻擊，也有學者提出以P2P良性Botnet來對抗惡意Botnet的分散式阻斷服務攻擊（Distributed Denial of Service,DDoS），因此良性Botnet的發展也是抵制目前網路上龐大的惡意程式攻擊的方法之一，因此我們導入的新型金鑰管理在P2P Botnet在良性Botnet的領域上是否有幫助，在未來也值得探討。
[ 英文摘要 ]
In the recently many years, Internet malware attack have become better organized and more profitable. Email spam, extortion by denial-of-attack, and click fraud represent something of this emerging trend. “Botnet” is the main cause of these problems, many attackers use it to do these malware attacks.
Because botnet-based attacks become popular and dangerous, security researchers have studied how to detect, monitor and defend against them. Most of the present research has focused on the C&C Botnets that have first occurred in the past, especially the Internet Relay Chat (IRC) based Botnet. It’s necessary to conduct such research so as to deal with the threat we are facing today. However, it’s important to research on the advanced Botnet that be designed by the attacker in the near future – P2P Botnet for example. Otherwise, we will remain susceptible to the future internet malware attacks.
In addition to the malicious attacks of the P2P malware, some academics have suggested to P2P friendly Botnet against distributed denial of service attacks (Distributed Denial of Service, DDoS) of the malicious Botnet. Therefore the development of friendly Botnet is one of the ways to resist the current network of malicious programs attack. We import a new key management in the field of benign Botnet to research into whether it is worth exploring in the future.
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