IEEE 1619-2007 en Standard for Cryptographic Protection of Data on Block-Oriented Storage Devices (IEEE Computer Society)《面向数据块的存储装置上数据的密码保护》.pdf

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1、IEEE Std 1619-2007IEEE Standard for CryptographicProtection of Data on Block-OrientedStorage Devices IEEE3 Park Avenue New York, NY 10016-5997, USA18 April 2008IEEE Computer SocietySponsored by theStorage Systems Standards Committeeand theInformation Assurance Standards Committee1619TMIEEE Std 1619-

2、 2007 IEEE Standard for Cryptographic Protection of Data on Block-Oriented Storage Devices Sponsor Information Assurance Standards Committee and the Storage Systems Standards Committee of the IEEE Computer Society Approved 5 December 2007 IEEE-SA Standards Board Abstract: Cryptographic transform and

3、 key archival methods for protection of data in sector-level storage devices are specified. Keywords: data-at-rest security, encryption, key management, security, storage, XTS _ The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2008 by

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21、 individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. Introduction This introduction is not part of IEEE Std 1619, IEEE Standard for Cryptographic Protection of Data on Block-Oriented Storage Devices. The purpose of this standard is to descri

22、be a method of encryption for data stored in sector-based devices where the threat model includes possible access to stored data by the adversary. The standard specifies the encryption transform and a method for exporting/importing encryption keys for compatibility between different implementations.

23、 Encryption of data in transit is not covered by this standard. This standard defines the XTS-AES tweakable block cipher and its use for encryption of sector-based storage. XTS-AES is a tweakable block cipher that acts on data units of 128 bits or more and uses the AES block cipher as a subroutine.

24、The key material for XTS-AES consists of a data encryption key (used by the AES block cipher) as well as a “tweak key” that is used to incorporate the logical position of the data block into the encryption. XTS-AES is a concrete instantiation of the class of tweakable block ciphers described in Roga

25、way B10.aThe XTS-AES addresses threats such as copy-and-paste attack, while allowing parallelization and pipelining in cipher implementations. Notice to users Laws and regulations Users of these documents should consult all applicable laws and regulations. Compliance with the provisions of this stan

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31、e IEEE at the address listed previously. For more information about the IEEE Standards Association or the IEEE standards development process, visit the IEEE-SA website at http:/standards.ieee.org. aThe numbers in brackets correspond to those of the bibliography in Annex A. iv Copyright 2008 IEEE. Al

32、l rights reserved. Errata Errata, if any, for this and all other standards can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at

33、 the following URL: http:/standards.ieee.org/reading/ieee/interp/ index.html. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the exis

34、tence or validity of any patent rights in connection therewith. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims or determining whether any licensing terms or condition

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36、their own responsibility. Further information may be obtained from the IEEE Standards Association. Participants The Security in Storage Working Group operated under the following sponsorship: Sponsor: John L. Cole Co-Sponsor: Curtis Anderson At the time this standard was submitted to the IEEE-SA Sta

37、ndards Board for approval, the Security in Storage Working Group had the following officers: Matthew V. Ball, Chair Eric A. Hibbard, Vice-chair James P. Hughes, Past chair Fabio Maino, Secretary At the time this standard was submitted to the IEEE-SA Standards Board for approval, the P1619 Task Group

38、 had the following membership: Serge Plotkin, Task Group Chair and Technical Editor Gideon Avida Matthew V. Ball David L. Black Russel S. Dietz Robert C. Elliott Hal Finney John Geldman Robert W. Griffin Cyril Guyot Shai Halevi Laszlo Hars Larry D. Hofer Walter A. Hubis James P. Hughes Glen Jaquette

39、 Curt Kolovson Robert A. Lockhart Fabio R. Maino Charlie Martin David A. McGrew Dalit Naor Landon Curt Noll Jim Norton Scott Painter David B. Sheehy Robert N. Snively Douglas L. Whiting v Copyright 2008 IEEE. All rights reserved. This document was edited by Serge Plotkin (past vice-chair), Shai Hale

40、vi, and Dalit Naor. Special thanks to Douglas L. Whiting, Brian Gladman, and Robert C. Elliott. The following members of the balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. Curtis C. Anderson Danilo Antonelli Gideon Avida Matthew V. Ball

41、 Brian A. Berg Massimo Cardaci Juan C. Carreon Keith Chow John L. Cole Roger Cummings Geoffrey Darnton Russell S. Dietz Carlo Donati Robert C. Elliott Yaacov Fenster John Geldman Robert W. Griffin Randall Groves Laszlo Hars Eric A. Hibbard Werner Hoelzl Larry D. Hofer Stuart Holoman Walter A. Hubis

42、Raj Jain Piotr Karocki Kenneth Lang Daniel G. Levesque Robert A. Lockhart Fabio R. Maino Edward McCall Michael Newman Charles K. Ngethe Landon Curt Noll Serge Plotkin Ulrich Pohl Jose Puthenkulam Michael D. Rush Randall M. Safier Stephen Schwarm David B. Sheehy Robert N. Snively Thomas Starai Walter

43、 Struppler John Vergis Oren Yuen Paolo ZangheriWhen the IEEE-SA Standards Board approved this standard on 5 December 2007, it had the following membership: Steve M. Mills, Chair Robert M. Grow, Vice Chair Don Wright, Past Chair Judith Gorman, Secretary Richard DeBlasio Alex Gelman William R. Goldbac

44、h Arnold M. Greenspan Joanna N. Guenin Julian Forster* Kenneth S. Hanus William B. Hopf Richard H. Hulett Hermann Koch Joseph L. Koepfinger* John Kulick David J. Law Glenn Parsons Ronald C. Petersen Tom A. Prevost Narayanan Ramachandran Greg Ratta Robby Robson Anne-Marie Sahazizian Virginia C. Sulzb

45、erger Malcolm V. Thaden Richard L. Townsend Howard L. Wolfman *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Alan H. Cookson, NIST Representative Lorraine Patsco IEEE Standards Program Manager, Document Development

46、Michael Kipness IEEE Standards Program Manager, Technical Program Development vi Copyright 2008 IEEE. All rights reserved. CONTENTS 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 1.3 Related work 1 2. Normative references 2 3. Definitions, acronyms, and abbreviations 2 3.1 Definitions . 2 3.2 Acronyms an

47、d abbreviations . 2 4. Special terms 2 4.1 Numerical values . 2 4.2 Letter symbols . 3 4.3 Special definitions . 3 5. XTS-AES transform . 3 5.1 Data units and tweaks 3 5.2 Multiplication by a primitive element 4 5.3 XTS-AES encryption procedure 4 5.4 XTS-AES decryption procedure 6 6. Using XTS-AES-1

48、28 and XTS-AES-256 for encryption of storage 8 7. Exporting and archiving XTS-AES-128 and XTS-AES-256 keys . 9 7.1 Key backup structure . 9 7.2 XML format. 11 7.3 Encryption of key backup material 13 Annex A (informative) Bibliography . 15 Annex B (informative) Test vectors . 16 Annex C (informative

49、) Pseudocode for XTS-AES-128 and XTS-AES-256 encryption 25 C.1 Encryption of a data unit with a size that is a multiple of 16 bytes. 25 C.2 Encryption of a data unit with a size that is not a multiple of 16 bytes. 26 Annex D (informative) Rationale and design choices 27 D.1 Purpose . 27 D.2 Transparent encryption . 27 D.3 Wide vs. narrow block tweakable encryption. 28 D.4 XEX construction . 29 vii Copyright 2008 IEEE. All rights reserved. D.5 Sector-size that is not a multiple of 128 bits. 32 D.6 Miscellaneous . 32 viii Copyright 2008 IEEE. All ri