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  • Research Article
  • Open Access

Efficient and Syntax-Compliant JPEG 2000 Encryption Preserving Original Fine Granularity of Scalability

EURASIP Journal on Information Security20082007:056365

  • Received: 29 June 2007
  • Accepted: 23 November 2007
  • Published:


A novel syntax-compliant encryption primitive and an efficient syntax-compliant JPEG 2000 encryption scheme are presented in this paper. The syntax-compliant encryption primitive takes, as input, syntax-compliant plaintext and produces syntax-compliant ciphertext. It is faster than all the other syntax-compliant encryption primitives we know. Our JPEG 2000 encryption scheme encrypts independently either each codeblock segment (normal mode) or each intersection of a codeblock segment and a codeblock contribution to a packet (in situ mode). Truncation-invariant parameters uniquely identifying each independently encrypted data block are combined with a global initialization vector to generate on the fly an initialization vector (IV) used to encrypt the data block. These IVs can be correctly regenerated even when the encrypted codestream is truncated. Encrypted codestreams are syntax-compliant. The original granularity of scalability is fully preserved after encryption so that an encrypted codestream can be truncated to adapt to different representations without decryption. Our JPEG 2000 encryption scheme is fast, error-resilient, and has negligible file-size overhead.


  • Normal Mode
  • Encryption Scheme
  • Data Block
  • Data Security
  • Initialization Vector


Authors’ Affiliations

Department of Electrical Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui, 230027, China
Microsoft Research Asia, Beijing, 100080, China


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© Yang Yang et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.