NETWORK SECURITYASYMMETRIC ENCRYPTION ppt

... 2 16 - 1 = 65535  Giá trị của d sẽ lớn và khó đoán Nguyễn Đại Thọ An ninh Mạng 19 NETWORK SECURITY ASYMMETRIC ENCRYPTION MAI Xuân Phú xuanphu150@gmail.com 1 An ninh c a RSAủ  Khóa 128 bit là

Ngày tải lên: 15/03/2014, 16:20

... Network Security & Network Security & Preventing Hacker Preventing Hacker ATHENA – Training & Network Security ATHENA – Training & Network Security ĐÀO

Ngày tải lên: 15/12/2013, 15:15

... Battle ip address 172.20.1.1 255.255.255.252 encapsulation ppp ! router rip network 172.18.0.0 network 172.19.0.0 network 172.20.0.0 no auto-summary ! ! ! line console 0 exec-timeout 0 0 ... 172.21.1.2 255.255.255.252 encapsulation ppp ip access-group 101 in ! router rip network 172.17.0.0 network 172.20.0.0 network 172.21.0.0 no auto-summary CertificationZone Page 5 o...

Ngày tải lên: 21/12/2013, 19:15

... following: a) MN visits new network b) New network obtains the address of old network c) New network requests context transfer to old network d) Old network transfers context of MN to new network e) After ... Closed Network Access Control: Closed Network [35] is a proprietary access control mechanism. With this mechanism, 5 a network manager can use either an open or a clo...

Ngày tải lên: 14/02/2014, 16:20

... value? plaintext ciphertext K A-B encryption algorithm decryption algorithm A-B K A-B plaintext message, m K (m) A-B K (m) A-B m = K ( ) A-B 8: Network Security 8-11 Symmetric key crypto: DES DES: Data Encryption ... secret key ❒ public encryption key known to all ❒ private decryption key known only to receiver 8: Network Security 8-15 Public key cryptography plaintext message,...

Ngày tải lên: 05/03/2014, 21:20

... assigned a network account with several user privileges. In many cases networks are closed to the outside but opened to the local network. Therefore a person with legal access to the internal network ... in this document is the infection via network. This method uses known vulnerabilities in network software for injecting worm code (see 5.3.2) Improving network security with H...

Ngày tải lên: 05/03/2014, 21:20

... stall while do block encryption after every n-bits encryption after every n-bits  note that the block cipher is used in note that the block cipher is used in encryption encryption mode at ... stream encryption on noisy channels uses: stream encryption on noisy channels Output FeedBack (OFB) Output FeedBack (OFB) Cryptography and Cryptography and Network Security Ne...

Ngày tải lên: 06/03/2014, 16:20

... keys Placement of Encryption Placement of Encryption Placement of Encryption Placement of Encryption  when using end-to-end encryption must leave when using end-to-end encryption must leave ... confidentiality Placement of Encryption Placement of Encryption  have two major placement alternatives have two major placement alternatives  link encryption link encryption...

Ngày tải lên: 06/03/2014, 16:20

... information about the network con- figuration. Authentication, especially of exter- nal BACnet users. Network Layer Attacks I-Am-Router- To -Network The I-Am-Router-To -Network message can ... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level fi...

Ngày tải lên: 14/03/2014, 22:20

... slow  so usually want to use private-key so usually want to use private-key encryption to protect message contents encryption to protect message contents  hence need a session key hence need ... used as session key in private-key is used as session key in private-key encryption scheme between Alice and Bob encryption scheme between Alice and Bob  if Alice and Bob subsequently co...

Ngày tải lên: 15/03/2014, 17:20