Tài liệu miễn phí An ninh - Bảo mật
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Bài giảng An toàn mạng máy tính nâng cao: Chương 2 - ThS. Nguyễn Duy
Bài giảng An toàn mạng máy tính nâng cao - Chương 2: Các giao thức bảo mật cung cấp cho người học các kiến thức: Ip security, secure socket layer transport layer security, pretty good privacy, secure shell. Mời các bạn cùng tham khảo nội dung chi tiết.
8/30/2018 5:54:08 AM +00:00
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng: Chương 1 - Nguyễn Ngọc Điệp
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng - Chương 1: Giới thiệu giám sát an toàn mạng cung cấp cho người học các kiến thức: Khái niệm và thuật ngữ, phát hiện xâm nhập, giám sát an toàn mạng, phòng thủ theo lỗ hổng bảo mật và phòng thủ theo nguy cơ,... Mời các bạn cùng tham khảo nội dung chi tiết.
8/30/2018 5:52:49 AM +00:00
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng: Chương 2 - Nguyễn Ngọc Điệp
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng - Chương 2: Thu thập dữ liệu cung cấp cho người học các kiến thức: Phương pháp thu thập dữ liệu, kiến trúc cảm biến, dữ liệu phiên, dữ liệu bắt gói tin đầy đủ, dữ liệu kiểu chuỗi trong gói tin. Mời các bạn cùng tham khảo.
8/30/2018 5:52:49 AM +00:00
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng: Chương 3 - Nguyễn Ngọc Điệp
Bài giảng Kỹ thuật theo dõi, giám sát an toàn mạng - Chương 3: Phát hiện xâm nhập cung cấp cho người học các kiến thức: Các kỹ thuật phát hiện xâm nhập, dấu hiệu tấn công và chữ ký; phát hiện xâm nhập dựa trên danh tiếng; phát hiện xâm nhập dựa trên chữ ký với Snort và Suricata; phát hiện xâm nhập dựa trên bất thường với dữ liệu thống kê,... Mời các bạn cùng tham khảo.
8/30/2018 5:52:49 AM +00:00
Bài giảng Tội phạm máy tính
Bài giảng Tội phạm máy tính có nội dung trình bày về khái niệm về tội phạm trong lĩnh vực CNTT, thực trạng tội phạm trong lĩnh vực CNTT, cơ sở pháp lý về tội phạm trong lĩnh vực CNTT, các hình thức phạm tội trong lĩnh vực CNTT, những vấn đề đặt ra của tội phạm trong lĩnh vực CNTT.
8/30/2018 5:51:35 AM +00:00
Lecture Data security and encryption - Lecture 1: Introduction to Data Security and Encryption
This chapter presents the following content: Outline of the course is discussed; topic roadmap & standards organizations; security concepts; X.800 security architecture; security attacks, services, mechanisms; models for network (access) security.
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Lecture Data security and encryption - Lecture 2: Introduction to Encryption
This chapter presents the following content: Security concepts: confidentiality, integrity, availability; security attacks, services, mechanisms; models for network (access) security; classical encryption techniques; symmetric cipher model.
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Lecture Data security and encryption - Lecture 3: Classical Encryption Techniques
This chapter presents the following content: Models for network (access) security, classical encryption techniques, symmetric cipher model, have considered, classical cipher techniques and terminology, brute force, cryptanalysis of brute force, caesar cipher, cryptanalysis of caesar cipher.
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Lecture Data security and encryption - Lecture 4: Classical Encryption Techniques
This chapter presents the following content: Classical cipher techniques and terminology, brute force, cryptanalysis of brute force, caesar cipher, cryptanalysis of caesar cipher, monoalphabetic substitution ciphers, playfair cipher, polyalphabetic ciphers, vigenère cipher.
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Lecture Data security and encryption - Lecture 5: Data security and encryption
This chapter presents the following content: Classical cipher techniques and terminology, monoalphabetic substitution ciphers, cryptanalysis using letter frequencies, playfair cipher, polyalphabetic ciphers, transposition ciphers, product ciphers and rotor machines, stenography.
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Lecture Data security and encryption - Lecture 6: Block ciphers and the data encryption standard
The objective of this chapter is to illustrate the principles of modern symmetric ciphers. For this purpose, we focus on the most widely used symmetric cipher: the Data Encryption Standard (DES). Although numerous symmetric ciphers have been developed since the introduction of DES, and although it is destined to be replaced by the Advanced Encryption Standard (AES), DES remains the most important such algorithm.
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Lecture Data security and encryption - Lecture 7: Data encryption standard (DES)
This chapter presents the following content: Data encryption standard (DES), DES history, DES design controversy, DES encryption overview, initial permutation IP, DES round structure, substitution boxes S, DES key schedule, DES decryption, avalanche in DES, avalanche effect, strength of DES – Timing attacks.
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Lecture Data security and encryption - Lecture 8: Data encryption standard (DES)
This chapter presents the following content: Data encryption standard (DES) strengths of DES, differential & linear cryptanalysis, block cipher design principles, differential & linear cryptanalysis, block cipher design principles.
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Lecture Data security and encryption - Lecture 9: AES
This chapter presents the following content: Data encryption standard (DES), strengths of DES, differential & linear cryptanalysis, block cipher design principles, the AES selection process, the details of Rijndael – the AES cipher, looked at the steps in each round.
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Lecture Data security and encryption - Lecture 10: AES
This chapter presents the following content: The AES selection process; The details of Rijndael – the AES cipher; looked at the steps in each round; out of four AES stages, two are discussed; substitute bytes; shift rows.
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Lecture Data security and encryption - Lecture 11: Number Theory and Finite Fields
This chapter presents the following content: Number theory, divisibility & GCD, modular arithmetic with integers, Euclid’s algorithm for GCD & inverse, the AES selection process, the details of Rijndael – the AES cipher, looked at the steps in each round out of four AES stages, last two are discussed: MixColumns, AddRoundKey.
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Lecture Data security and encryption - Lecture 12: Number Theory and Finite Fields
This chapter presents the following content: Number theory, divisibility & GCD, modular arithmetic with integers, Euclid’s algorithm for GCD & inverse, Group, Ring, Field, finite fields GF(p), polynomial arithmetic in general and in GF(2n).
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Lecture Data security and encryption - Lecture 13: Block Cipher Operation
The contents of this chapter include all of the following: multiple encryption & DES, why not double-DES? triple-DES with two-keys, modes of operation, electronic codebook book (ECB), advantages and limitations of ECB, cipher block chaining (CBC).
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Lecture Data security and encryption - Lecture 14: Stream Ciphers and Random Number Generation
The comparatively late rise of the theory of probability shows how hard it is to grasp, and the many paradoxes show clearly that we, as humans, lack a well grounded intuition in this matter. In probability theory there is a great deal of art in setting up the model, in solving the problem, and in applying the results back to the real world actions that will follow.
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Lecture Data security and encryption - Lecture 15: Public Key Cryptography
The development of public-key cryptography is the greatest and perhaps the only true revolution in the entire history of cryptography. From its earliest beginnings to modern times, virtually all cryptographic systems have been based on the elementary tools of substitution and permutation, and can be classed as private/secret/single key (symmetric) systems. All classical, and modern block and stream ciphers are of this form.
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Lecture Data security and encryption - Lecture 16: RSA
The contents of this chapter include all of the following: principles of public-key cryptography, RSA en/decryption, RSA key setup, why RSA works, exponentiation, efficient encryption, efficient decryption, RSA key generation, RSA security, factoring problem, progress in factoring.
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Lecture Data security and encryption - Lecture 17: Other Public Key Cryptosystems
The contents of this chapter include all of the following: Diffie-Hellman key exchange, ElGamal cryptography, Elliptic curve cryptography, Pseudorandom Number Generation (PRNG) based on Asymmetric Ciphers.
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Lecture Data security and encryption - Lecture 18: Hash Function
The contents of this chapter include all of the following: Hash functions, cryptographic hash function, hash functions & message authentication, hash functions & digital signatures, other hash function uses, two simple insecure hash functions, attacks on hash functions.
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Lecture Data security and encryption - Lecture 19: Message Authentication
The contents of this chapter include all of the following: Message authentication requirements, message authentication using encryption, MACs, HMAC authentication using a hash function, CMAC authentication using a block cipher, pseudorandom number generation (PRNG) using Hash Functions and MACs.
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Lecture Data security and encryption - Lecture 20: Digital Signatures
The contents of this chapter include all of the following: Digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, digital signature model, attacks and forgeries, digital signature requirements, direct digital signatures, ElGamal digital signature.
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Lecture Data security and encryption - Lecture 21: Key Management and Distribution
The contents of this chapter include all of the following: symmetric key distribution using symmetric encryption, symmetric key distribution using public-key encryption, distribution of public keys, digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, X.509 authentication and certificates.
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Lecture Data security and encryption - Lecture 22: User Authentication
The contents of this chapter include all of the following: Remote user authentication issues, authentication using symmetric encryption, the Kerberos trusted key server system, authentication using asymmetric encryption, federated identity management.
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Lecture Data security and encryption - Lecture 23: Wireless Network Security
The contents of this chapter include all of the following: IEEE 802.11 Wireless LANs, protocol overview and security, Wireless Application Protocol (WAP), protocol overview, Wireless Transport Layer Security (WTLS).
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Lecture Data security and encryption - Lecture 24: Electronic Mail Security
The contents of this chapter include all of the following: secure email, PGP, S/MIME, domain-keys identified email, electronic mail security, email security, email security enhancements, pretty good privacy (PGP), PGP operation – authentication, PGP operation – confidentiality & authentication,...
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Lecture Data security and encryption - Lecture 25: IP security
The contents of this chapter include all of the following: IPSec security framework, IPSec security policy, ESP, combining security associations, internet key exchange, cryptographic suites used, secure email, PGP, S/MIME, domain-keys identified email.
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