A scalable security architecture for multimedia communication standards

Kunkelmann, Thomas; Reinema, Rolf

doi:10.1109/mmcs.1997.609807

Cited by 24 publications

(8 citation statements)

References 3 publications

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“…We address the security of the basic method and Ipicture of the trade-off method, and prove that the probability that PR can recover a frame in real-time is less than 1/2 13 and that it prevents PR from reconstructing content with adequate service quality in real-time. Let us assume that there is a cryptanalysis of the current scheme, so that cryptological security is impossible.…”

Section: Analysis On Practical Security Of Basic Methodsmentioning

confidence: 99%

“…The AC-coefficients of low frequencies are encrypted in Kunlemann and Reinema' technique 13) and those of high frequencies are encrypted in Cheng and Li's technique 14) . Shi and Bhargava reduced the computational cost by encrypting only sign bits of all DCT coefficient 15) .…”

Section: Related Workmentioning

confidence: 99%

“…[Lemma 2] Assuming that the advantage Pr PR of a pirate receiver PR guessing the above numbers m, d, c, n and the final code F C correctly in real-time is less than 1/2 13 . The method is practically secure.…”

Section: [Assumption 1]mentioning

confidence: 99%

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[Paper] Practical Update of Scrambling Scheme and its Security Analysis

Ogawa¹,

Inoue²

2018

MTA

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Content distributed by broadcast and multicast services is often encrypted (scrambled) to protect copyrighted material. When any cryptanalysis of the current cryptographic scheme used in such services is found, the scheme must be updated. However, the scheme cannot be updated suddenly because a lot of subscribers have receivers with the current scheme.We have previously proposed two cryptographic scheme updating methods. The two methods have trade-off relationship between security and transmission bit rate. However, our security analysis was insufficient. We revisit the security analysis on the methods. In addition, we show a new strong attack against the methods and we evaluate the security against the new attack. As a result, we show that, even if the new attack is implemented in a pirate receiver (PR), its probability to reconstruct content in real-time is very small and that the proposed methods are secure against such a new attack from the viewpoint of service quality. Totally, we show the update methods are practical and secure.

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Section: Analysis On Practical Security Of Basic Methodsmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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[Paper] Practical Update of Scrambling Scheme and its Security Analysis

Ogawa¹,

Inoue²

2018

MTA

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“…Kunlemann and Reinema [11] suggest only the encryption of low order discrete cosine transform (DCT) coefficients. Cheng and Li [6] take exception with this approach saying that the higher order DCT coefficients carry edge information (they attack the secrecy of this approach though do not comment on the degradation aspect).…”

Section: 5mentioning

confidence: 99%

“…Scalable Systems Several researchers [11,22,28] have considered scalable versions of MPEG (in which the total bitstream can be divided into an ordered set of sub bitstreams with a useful albeit degraded reconstruction possible with only the first bitstream received, gradually yielding better and better reconstruction quality as additional bitstreams are received). There are straightforward applications of selective encryption to such systems, although they can be quite different in intent.…”

Section: 9mentioning

confidence: 99%

Security analysis of selectively encrypted MPEG-2 streams

Lookabaugh¹,

Sicker²,

Keaton³

et al. 2003

SPIE Proceedings

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Selective encryption exploits the relationship between encryption and compression to reduce encryption requirements, saving in complexity and facilitating new system functionality. Selective encryption of MPEG video streams has been proposed in a number of variations, yet has seen little application to date. Here we focus on high encryption savings, targeting 10% of the bit stream or less encrypted, moderate security in the sense that the content is degraded to the point that purchase would be preferred over consuming free content, no impact on compression efficiency, and a cryptanalytic approach to validating security. We find that adequate security is plausible if the compressor is cooperative or at least neutral with respect to the selective encryption system, but implausible if the compressor is operated antagonistically. The unusually low encryption targeted makes application of this solution appealing.

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Buffer Occupancy Feedback Security Control and Changing Encryption Keys to Protect MOD Services

Lai

Wang

2006

Advances in Image and Video Technology

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A scalable security architecture for multimedia communication standards

Cited by 24 publications

References 3 publications

[Paper] Practical Update of Scrambling Scheme and its Security Analysis

[Paper] Practical Update of Scrambling Scheme and its Security Analysis

Security analysis of selectively encrypted MPEG-2 streams

Buffer Occupancy Feedback Security Control and Changing Encryption Keys to Protect MOD Services

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