Subject » BMEVITMM000
Security in Media Communications
Médiakommunikáció-biztonság
A tantárgyleírás hatályossága
Hatályosság kezdete:
2026. March 21.
Hatályosság vége:
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| Subject name (Hungarian, English) |
Médiakommunikáció-biztonság
Security in Media Communications
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| Subject code | BMEVITMM000 | ||||||||||||
| Subject type | — | ||||||||||||
| Training Level | — | ||||||||||||
| Course types and hours (weekly/semester) |
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| Assessment type | vizsga | ||||||||||||
| Credits | 4 | ||||||||||||
| Subject coordinator |
DR. Fehér Gábor
position: egyetemi docens
contact:
feher.gabor@vik.bme.hu
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| Responsible department |
Távközlési és Mesterséges Intelligencia Tanszék
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| Faculty | Villamosmérnöki és Informatikai Kar | ||||||||||||
| Subject website | http://www.tmit.bme.hu/vitmm000 | ||||||||||||
| Primary curriculum type | — | ||||||||||||
| Direct prerequisites – Strong prerequisite | none | ||||||||||||
| Direct prerequisites – Weak prerequisite | none | ||||||||||||
| Direct prerequisites – Parallel prerequisite | none | ||||||||||||
| Direct prerequisites – Milestone prerequisite | none | ||||||||||||
| Direct prerequisites – Exclusion | none |
Objectives
Programme
- Introduction to media communications security. Ciphering and data hiding in real media communication applications.
- Historical overview of cryptography and steganography. Algorithms and practices in the past period. Modern age cryptography. State of the art cryptography and steganography algorithms.
- Symmetric key ciphers. Block ciphers in theory and practice. Block cipher modes of operation. Stream ciphers in theory and practice. Converting block ciphers into stream ciphers.
- Hash functions and message authentication. Iterative hash functions. Unkeyed and keyed hash algorithms. Practical hash functions: MD5, SHA family
- Asymmetric key cryptography. The RSA algorithm. Creating RSA keys, ciphering with RSA. RSA blinding. Digital signatures. Digital signatures with RSA.
- Key exchange protocols. Key transportation and key agreement. Diffie-Hellman key exchange. Group keys. Key exchange for group communication.
- Data hiding algorithms for images and video sequences. Digital watermarking and fingerprinting. Robust watermarking for video sequences.
- Video ciphering algorithms. Naive and selective video encryption algorithms. Security of Digital Video Broadcasting (DVB). Video streaming security.
- Access control for offline media. Copy protection of offline media: DVD and Blu-Ray protections. Content Scrabbling System (CSS) and Advanced Access Content System (AACS). High-bandwidth Digital Content Protection (HDCP).
- Access control for online media. Digital Rights Management. Open Mobile Alliance (OMA) DRM protocols.
- VoIP security. Protection of VoIP systems. Firewall and NAT traversal for VoIP streams. SIP authentication. SIP identity protection.
The general objective of the course is to give an overview of the security problems and their stat-of-the-art solutions in the field of media communications. In order to be comprehensive, the course gives a general overview on some basic cryptographic algorithms and security protocols. It then studies specific security problems related to media communications. It also shows practical examples as case studies.
Learning outcomes
Ez a tantárgy a KKK rendeletben meghatározott, következő kompetenciák fejlesztését szolgálja:
Knowledge
No learning outcomes recorded.
Skills
No learning outcomes recorded.
Attitudes
No learning outcomes recorded.
Autonomy and responsibility
No learning outcomes recorded.
Oktatási módszertan
Three lectures hours per week.
Tanulástámogató anyagok
Online források
Alfred J. Menezes, Paul C. van Oorschot and Scott A. Vanstone, “Handbook of Applied Cryptography”, CRC Press, ISBN: 0-8493-8523-7; Wenjun Zeng, Heather Yu, Ching-Yung Lin, Multimedia Security Technologies for Digital Rights Management, ACADEMIC PRESS, 2006.; Borko Furth, Darko Kirovski, “Multimedia Security Handbook”, CRC Press, 2005
Recommended preliminary knowledge for completing the subject
Knowledge type competencies
(azon előzetes ismeretek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
Applied Cryptography and Network Security
Skill type competencies
(azon előzetes képességek és készségek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
nincs
Recommended (non-compulsory) preliminary competencies
(azon ajánlott (nem kötelező) előzetesen megszerzendő kompetenciák összessége, amelyek jelentősen hozzájárulnak a tantárgy eredményes teljesítéséhez)
Applied Cryptography and Network Security
General rules
Requirements:
In the class period, there is an in-class test (ZH) The result of the in-class test gives 40% of the final grade. Condition for the signature is the pass mark of ZH test (40% or above). There is a possibility to rewrite the in-class test (ZH). In the rectification period (repeat period) there is another (final) possibility to rewrite the in-class test (ZH).
In the examination period, there is a written examination.
Additional possibilities:
There is one possibility to repeat the test in the class period and there is a final one in the official recap period.
Assessment methods
In-term assessments
No detailed assessments provided.
Weight of in-term assessments
No weights provided.
Exam-period assessments
No detailed assessments provided.
Weight of exam elements
No weights provided.
Grade calculation
No grade thresholds provided.
Attendance requirements
No attendance requirements provided.
Rules for retake and resubmission
Not provided.
Short description
Not provided.
Detailed description
Not provided.
Recommended courses
Cryptographic algortihms, Network security protocols.
Workload to complete the subject
No workload breakdown provided.
Validity of subject requirements
Requirements valid from:
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Requirements valid until:
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Curriculum placement
No curriculum placements recorded for this subject version.