ISMACryp

The ISMA Encryption and Authentication, Version 1.1 specification (or ISMACryp) specifies encryption and message authentication services for MPEG-4 over RTP streams. It was defined by the Internet Streaming Media Alliance and published on September 15, 2006.[1]

The ISMA Encryption and Authentication, Version 2.0 specifies content encryption, message authentication (integrity) services, an RTP payload format and a file format for pre-encrypted content for ISMA 1.0, ISMA 2.0 and more generally any media that can be stored as elementary stream in an ISO base media file format (ISO/IEC 14496-12). The specification was published on 15 November 2007.[2] ISMACryp specification defined extensions over the ISO base media file format, which were registered by the registration authority for code-points in "MP4 Family" files.[3][4] The ISMACryp 2.0 specification in an informative "Annex F" provides guidelines on how ISMACryp can be used together with the key and rights management system of OMA DRM v2 (Open Mobile Alliance DRM). The Packetized OMA DRM Content Format is almost based on ISMACryp format.[2]

There are two alternatives to ISMACryp, SRTP and IPsec, that can also be used to provide service and content protection. The difference between the three is at what level encryption is done. Whereas ISMACryp encrypts MPEG-4 access units (that are in the RTP payload), SRTP encrypts the whole RTP payload, and IPsec encrypts packets at .

References

  1. ^ ISMA (2006-09-15) ISMA Encryption and Authentication, Version 1.1, Retrieved on 2009-08-14
  2. ^ a b ISMA (2007-11-15) ISMA Encryption and Authentication, Version 2.0, Retrieved on 2009-08-14
  3. ^ MP4 Registration Authority Registered Types - Codecs Archived 2004-08-28 at the Wayback Machine, Retrieved on 2009-08-14
  4. ^ MP4 Registration Authority Registered Types - Brands Archived 2009-12-08 at the Wayback Machine, Retrieved on 2009-08-14

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.