cryptographic data integrity protection key exchange and user authentication mechanisms

Public-Key Cryptography and Message Authentication potx

Public-Key Cryptography and Message Authentication potx

Ngày tải lên : 29/03/2014, 16:20
... Message Authentication • Secure Hash Functions and HMAC • Public -Key Cryptography Principles • Public -Key Cryptography Algorithms • Digital Signatures • Key Management Henric Johnson Authentication ... Only the sender and receiver should share a key • Message Authentication without Message Encryption – An authentication tag is generated and appended to each message • Message Authentication Code ... at a certain time or sequence • Protection against active attack (falsification of data and transactions) Henric Johnson Approaches to Message AuthenticationAuthentication Using Conventional...
  • 28
  • 442
  • 0
Data Integrity and Advanced Query Technique

Data Integrity and Advanced Query Technique

Ngày tải lên : 25/08/2012, 09:00
... Foreign Key Constraint Foreign Key cột hay kết hợp nhiều cột sử dụng để áp đặt mối liên kết data hai table Foreign key table giữ giá trị Primary key table khác tạo nhiều Foreign key table Foreign key ... Primary Key hay cột có Unique Constraints Foreign key chứa Null Mặc dù mục đích Foreign Key Constraint để kiểm soát data chứa table có Foreign key (tức table con) thực chất kiểm soát data table ... Primary key (tức table cha) Ví dụ ta delete data table cha data table trở nên "mồ côi" (orphan) reference ngược table cha Do Foreign Key constraint đảm bảo điều không xảy Nếu bạn muốn delete data...
  • 9
  • 726
  • 0
Data Integrity and Advanced Query Technique

Data Integrity and Advanced Query Technique

Ngày tải lên : 06/10/2013, 17:20
... Foreign Key Constraint Foreign Key cột hay kết hợp nhiều cột sử dụng để áp đặt mối liên kết data hai table Foreign key table giữ giá trị Primary key table khác tạo nhiều Foreign key table Foreign key ... Primary Key hay cột có Unique Constraints Foreign key chứa Null Mặc dù mục đích Foreign Key Constraint để kiểm soát data chứa table có Foreign key (tức table con) thực chất kiểm soát data table ... Primary key (tức table cha) Ví dụ ta delete data table cha data table trở nên "mồ côi" (orphan) reference ngược table cha Do Foreign Key constraint đảm bảo điều không xảy Nếu bạn muốn delete data...
  • 8
  • 379
  • 0
Tài liệu Module 8: Protecting Communication Privacy and Data Integrity pptx

Tài liệu Module 8: Protecting Communication Privacy and Data Integrity pptx

Ngày tải lên : 24/01/2014, 10:20
... Communication Privacy and Data Integrity Using Digital Signatures User A User B Data Data Data Data Hash algorithm Hash algorithm Hash algorithm Hash algorithm User B User B User B User B Hash value ... transfer a key User A User A Session key User A User A Private key Private Public key Encrypt " ! Session key Encrypt Use symmetric encryption for the remainder of the session Storing keys " ACL ... Integrity 11 Verifying Data Integrity with Hashes User B User A Data Data Hash value Hash value Hash algorithm Hash algorithm Data Data Hash algorithm Hash algorithm Data Data Hash value Hash value...
  • 86
  • 354
  • 0
Báo cáo hóa học: " Research Article Biometric Methods for Secure Communications in Body Sensor Networks: Resource-Efficient Key Management and Signal-Level Data " potx

Báo cáo hóa học: " Research Article Biometric Methods for Secure Communications in Body Sensor Networks: Resource-Efficient Key Management and Signal-Level Data " potx

Ngày tải lên : 22/06/2014, 00:20
... the ECG that makes it a prime candidate for good security As already mentioned, good cryptographic keys need a high degree of randomness, and keys derived from random time-varying signals have ... v[n] 10 15 20 25 Ideal key (from same sensor) Correct key (from same BSN) Incorrect key (without key optimization) Incorrect key (with key optimization) Figure 9: INTRAS data scrambling, with ... 40 30 30 20 20 10 10 10 15 20 25 Ideal key (from same sensor) Correct key (from same BSN) Incorrect key (without key optimization) Incorrect key (with key optimization) To account for the channel...
  • 16
  • 460
  • 0
Báo cáo hóa học: " Optimal Erasure Protection Assignment for Scalable Compressed Data with Small Channel Packets and Short Channel Codewords" pot

Báo cáo hóa học: " Optimal Erasure Protection Assignment for Scalable Compressed Data with Small Channel Packets and Short Channel Codewords" pot

Ngày tải lên : 23/06/2014, 01:20
... image are also coded and represented independently within the data stream Elements of the JPEG2000 compressed data stream form a tree structure, as depicted in Figure The data stream header becomes ... practical applications, the size of the data source is large and packet sizes must be relatively small, leading to the need for long and computationally demanding channel codes Two solutions to ... streams,” in Proc IEEE Data Compression Conference, pp 73–82, Snowbird, Utah, USA, April 2002 [11] V Stankovic, R Hamzaoui, and Z Xiong, “Packet loss protection of embedded data with fast local...
  • 13
  • 241
  • 0
digital data integrity the evolution from passive protection to active management

digital data integrity the evolution from passive protection to active management

Ngày tải lên : 03/07/2014, 16:06
... productivity and efficiency gains (Amit and Zott, 2001; Lucking-Reiley and Spulbur, 2001; Wigand and Benjamin, 1995) E-commerce also is expected to facilitate entry into new markets and the extension ... game users share common time-space compressed experiences and socialize with other game users in order to survive the cyber-society of Lineage In short, the broadband Internet infrastructure and ... challenges and effects across numerous domains of society, and for policy makers These issues involve economic productivity, intellectual property rights, privacy protection, and affordability of and...
  • 424
  • 454
  • 0
Data Integrity and Advanced Query Technique- P1 potx

Data Integrity and Advanced Query Technique- P1 potx

Ngày tải lên : 08/07/2014, 07:21
...  Data Type : Data type đảm bảo tính toàn vẹn data ví dụ bạn khai báo data type cột Integer bạn đưa giá trị thuộc dạng String vào  ... xác vào database (invalid data) Thật NOT NULL hay DEFAULT xem dạng constraint không bao gồm hai loại mà trình bày loại constraints Primary Key Constraint, Unique Constraint, Foreign Key Constraint ... Primary Key constraint Có thể có nhiều cột tham gia vào việc tạo nên Primary Key, cột chứa Null giá trị cột thành viên trùng giá trị tất cột tạo nên Primary Key phải mang tính Khi Primary Key tạo...
  • 5
  • 209
  • 0
Data Integrity and Advanced Query Technique- P2 ppt

Data Integrity and Advanced Query Technique- P2 ppt

Ngày tải lên : 08/07/2014, 07:21
... kết data hai table Foreign key table giữ giá trị Primary key table khác tạo nhiều Foreign key table Foreign key reference (tham chiếu) vào Primary Key hay cột có Unique Constraints Foreign key ... đích Foreign Key Constraint để kiểm soát data chứa table có Foreign key (tức table con) thực chất kiểm soát data table chứa Primary key (tức table cha) Ví dụ ta delete data table cha data table ... tương tự Primary Key Constraint việc thay chữ Primary Key thành Unique SQL Server tự động tạo non-clustered unique index ta tạo Unique Constraint Foreign Key Constraint Foreign Key cột hay kết...
  • 5
  • 233
  • 0
Data Integrity and Advanced Query Technique- P3 pps

Data Integrity and Advanced Query Technique- P3 pps

Ngày tải lên : 08/07/2014, 07:21
... ) Tương tự Foreign Key Constraint ta cần disable Check Constraint trường hợp Insert hay Update mà việc kiểm soát tính hợp lệ data không áp dụng cho data Trường hợp thứ hai replication ... câu lệnh SELECT Clause Sau keyword (từ khóa) SELECT ta có danh sách cột mà ta muốn select cách dấu "," Có Keywords cần nhấn mạnh phần SELECT   Distinct : Khi có keyword vào cho kết cột không ... SELECT   Distinct : Khi có keyword vào cho kết cột không trùng Ví dụ Orders table Norwind database (database mẫu di kèm với SQL Server) chứa giá trị trùng lập (duplicate value) cột ShipCity Nếu...
  • 5
  • 258
  • 0
Data Integrity and Advanced Query Technique- P4 ppt

Data Integrity and Advanced Query Technique- P4 ppt

Ngày tải lên : 08/07/2014, 07:21
... để select lượng data lớn từ nhiều table khác vào table (thường dùng cho mục đích tạm thời (temporary table)) mà khỏi phải thực thi câu lệnh Insert nhiều lần Một cách khác select data từ hay nhiều ... Uninon keyword có nhiệm vụ ghép nối kết hay nhiều queries lại thành kết Ví dụ: Giả sử có table1(ColumnA varchar(10), ColumnB int) table2(ColumnC varchar(10), ColumnD int) Ta muốn select data từ ... ColumnD int) Ta muốn select data từ table1 ghép với data từ table2 để tạo thành kết ta làm sau: SELECT * FROM Table1 UNION ALL SELECT * FROM Table2 Nếu keyword ALL hàng giống từ table xuất lần kết Còn...
  • 5
  • 244
  • 0
Data Integrity and Advanced Query Technique- P5 pot

Data Integrity and Advanced Query Technique- P5 pot

Ngày tải lên : 08/07/2014, 07:21
... publishers.city ORDER BY au_lname DESC Ðể ý câu lệnh keyword "On" Muốn hiểu rõ loại join bạn cho chạy thử SQL Server làm phần tập số Tóm lại tìm hiểu data integrity SQL Server cách dùng loại Constraint ... p.Pub_name ASC, a.Au_lname ASC, a.Au_fname ASC Right Outer Joins Dùng Right Outer Join để select data từ hay nhiều tables tất cột bên table thứ hai không tồn bên table thứ select cộng với giá trị ... p.Pub_name ASC, a.Au_lname ASC, a.Au_fname ASC Full Outer Joins Dùng Full Outer Join để select data từ hay nhiều tables tất cột bên table thứ thứ hai chọn giá trị bên hai table lấy lần Tức phần...
  • 5
  • 285
  • 0
Báo cáo khoa học: "Stomatal and non stomatal limitation of photosynthesis by leaf water deficits in three oak species: a comparison of gas exchange and chlorophyll a fluorescence data" potx

Báo cáo khoa học: "Stomatal and non stomatal limitation of photosynthesis by leaf water deficits in three oak species: a comparison of gas exchange and chlorophyll a fluorescence data" potx

Ngày tải lên : 09/08/2014, 03:24
... (Boyer, 1976) and in ribulose-biphosphate carboxylase-oxygenactivity (Vu et al, 1987) Leaf gas exchange measurements and analysis using diffusion models (Jones, 1973, 1985; Farquhar and Sharkey, 1982) ... C ) i relationships (Jones and Fanjul, 1983; et al, 1986; Ögren and Öquist, 1985; Kirschbaum, 1987; Cornic et al, 1987; Grieu et al, 1988) Farquhar and Teskey Sharkey (1982) have also reported ... 400W, Philips), and monitored with a quantum sensor (Li 190SB, LiCor) Regulations and data acquisition were monitored by an application stored in a computer (AT3, IBM) via a data logger (SAM...
  • 16
  • 231
  • 0
Báo cáo y học: "Network security and data integrity in academia: an assessment and a proposal for large-scale archiving" potx

Báo cáo y học: "Network security and data integrity in academia: an assessment and a proposal for large-scale archiving" potx

Ngày tải lên : 14/08/2014, 14:22
... nature of academia, the key requirement is not to prevent unauthorized access at all costs, but rather to maintain the integrity and robustness of data and scientific results and to ensure this for ... consistent with the key goal of security in academia: to preserve data and results for posterity reviews There are common and effective lines of defense, such as firewalls and antivirus software, ... large and widespread attacks And there have been real and significant cases of data loss The New York Times recently reported on a successful attack involving hundreds of computers in government and...
  • 4
  • 281
  • 0
Information theoretic based privacy protection on data publishing and biometric authentication

Information theoretic based privacy protection on data publishing and biometric authentication

Ngày tải lên : 10/09/2015, 09:01
... biometric data is extremely important to guarantee the privacy of the users, and it is important that the biometric data is not stored in the system A key challenge in protecting biometric data as user ... consider two types of datasets, spatial datasets and dynamic datasets, and show that the noise level can be further reduced by constructions that exploit the δ-neighbourhood, and the utility can ... thesis, we look into protections on biometric data Biometric data are potentially useful in building secure and easy-to-use security systems A biometric authentication system enrolls users by scanning...
  • 144
  • 495
  • 0
File and User Information Utilities

File and User Information Utilities

Ngày tải lên : 02/10/2013, 09:20
... names and the number of users currently logged on $ who -q user2 user3 # users=2 $ Using the who am I and whoami Commands who am i The who am i command displays information about your real user ... those of the new user ID To change to your previous user ID, type exit Command Format su [-] username Using the su Command to Become Another User $ su guest Password: $ pwd /home /user2 $ cd $ pwd ... command displays only the login name of the effective user Command Format whoami $ whoami guest The sort Command The sort command provides a quick and easy way for operators to organize data...
  • 18
  • 385
  • 0
Guaranteeing Data Integrity

Guaranteeing Data Integrity

Ngày tải lên : 03/10/2013, 00:20
... @NewAddress, Phone = @NewPhone WHERE ID = @OriginalID If User A and User B are both updating the record at the same time, with User A modifying Address and User B correcting Phone, the “last one wins” rule ... existing SqlCommand object SqlCommand updateCommand = new SqlCommand(sqlText, linkToDB); updateCommand.Transaction = envelope; Visual Basic ' - Include the transaction in the SqlCommand constructor ... Dim updateCommand As New SqlCommand(sqlText, linkToDB, envelope) ' - Or add it to an existing SqlCommand object Dim updateCommand As New SqlCommand(sqlText, linkToDB) updateCommand.Transaction...
  • 19
  • 265
  • 1
Personalization and User Attributes

Personalization and User Attributes

Ngày tải lên : 05/10/2013, 04:20
... follows The user s immediate personal information: user. bdate user. gender user. employer user. department user. jobtitle The user s identifying information: user. name.prefix user. name.given user. name.family ... user. name.family user. name.middle user. name.suffix user. name.nickName The user s personal address information: user. home-info.postal.name user. home-info.postal.street user. home-info.postal.city user. home-info.postal.stateprov ... Personalization and User Attributes The user s personal fax details: user. home-info.telecom.fax.intcode user. home-info.telecom.fax.loccode user. home-info.telecom.fax.number user. home-info.telecom.fax.ext user. home-info.telecom.fax.comment...
  • 14
  • 346
  • 0
Module 7: Implementing Data Integrity

Module 7: Implementing Data Integrity

Ngày tải lên : 18/10/2013, 19:15
... 7: Implementing Data Integrity Activity 7.2: Determining Business and Data Integrity Implementations Implementing Business Rules and Data Integrity Activity 7.1: Identifying Data Integrity Requirements ... data integrity rules and ways of enforcing them " Data Integrity Categories " Referential Integrity " Data Validation " Identifying Data Integrity Requirements " Activity 7.1: Identifying Data Integrity ... given data integrity requirement 148 Module 7: Implementing Data Integrity ! Overview of Data Integrity Slide Objective To provide an overview of data integrity Lead-in This section discusses data...
  • 24
  • 361
  • 0

Xem thêm