ANSI-X9.52-1998.pdf
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1、ANS X9.52-1998 American National Standard for Financial Services X9.52 -1998 Triple Data Encryption Algorithm Modes Of Operation Secretariat: American Bankers Association Approved: July 29, 1998 American National Standards Institute Copyright American National Standards Institute Provided by IHS und
2、er license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- American Bankers Association ANS X9.52 American National Standard Approval of an American National Standard requ
3、ires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materiall
4、y affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely volunta
5、ry; their existence does not in any respect preclude anyone, whether he has approved the standards or not from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and w
6、ill in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be address
7、ed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw t
8、his standard no later than five years from the date of approval. Published by American Bankers Association 1120 Connecticut Ave., NW Washington, DC 20036 USA Customer Service Center 1(800) 338-0626 or 1(202) 663-5087 Fax 1(202) 663-7543, E-mail X9 Online http:/www.x9.org Copyright 1998 by American
9、Bankers Association All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America Copyright American National Standards Institute Provided by I
10、HS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- American Bankers Association ANS X9.52 Contents FOREWARD.i AMERICAN NATIONAL STANDARDS INSTITUTE.I 1SCOPE
11、1 2NORMATIVE REFERENCES.1 3DEFINITIONS2 4SYMBOLS AND ABBREVIATIONS.5 5ORGANIZATION 7 6SPECIFICATIONS.8 6.1TDEA ENCRYPTION/DECRYPTION OPERATION.8 6.2KEYING OPTIONS8 6.3TDEA MODES OF OPERATION.8 6.4BACKWARD COMPATIBILITY.9 6.5SCHEDULE OF DEA FUNCTIONAL BLOCKS.9 6.6IMPROVING THROUGHPUT AND MINIMIZING P
12、ROPAGATION9 6.7KEYS AND INITIALIZATION VECTORS. 10 6.8INPUT AND OUTPUT. 11 7TDEA MODES OF OPERATION . 12 7.1TDEA ELECTRONIC CODEBOOK MODE OF OPERATION. 12 7.1.1TECB Definition 12 7.1.2TECB Properties. 14 7.2TDEA CIPHER BLOCK CHAINING MODE OF OPERATION. 15 7.2.1TCBC Definition . 15 7.2.2TCBC Properti
13、es. 16 7.3TDEA CIPHER BLOCK CHAINING MODE OF OPERATION - INTERLEAVED. 16 7.3.1TCBC-I Definition. 16 7.3.2TCBC-I Properties 21 7.4TDEA CIPHER FEEDBACK MODE OF OPERATION 22 7.4.1TCFB Definition 22 7.4.2TCFB Properties. 23 7.5TDEA CIPHER FEEDBACK MODE OF OPERATION - PIPELINED. 24 7.5.1TCFB-P Definition
14、 24 7.5.2TCFB-P Properties 26 7.6TDEA OUTPUT FEEDBACK MODE OF OPERATION 27 7.6.1TOFB Definition . 27 7.6.2TOFB Properties. 29 7.7TDEA OUTPUT FEEDBACK MODE OF OPERATION - INTERLEAVED 29 7.7.1TOFB-I Definition. 29 7.7.2TOFB-I Properties 31 ANNEX A ASN.1 SYNTAX FOR TDEA MODES OF OPERATION (NORMATIVE) .
15、 40 A.1OVERVIEW 40 A. 2 SYNTAX FOR TDEA MODES OF OPERATIONS. 40 A.3OBJECT IDENTIFIERS 42 A. 4 SUPPORTING DEFINITIONS 42 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:41:44
16、 MDTNo reproduction or networking permitted without license from IHS -,-,- American Bankers Association ANS X9.52 A. 5 ASN.1 MODULE 43 ANNEX B TDEA MODES OF OPERATION CRYPTOGRAPHIC ATTRIBUTES (INFORMATIVE). 45 B.1MODE OF OPERATION 45 B.2KEY ATTACKS 45 B.3 TEXT ATTACKS 45 B.3.1 Stream Cipher Cycle Le
17、ngth 46 B.3.2 Text Dictionary . 46 B.3.3 Matching Ciphertext 46 B.4GUIDANCE ON THE AUTHENTICATION OF DATA 47 ANNEX C EXAMPLES OF TDEA MODES OF OPERATION (INFORMATIVE). 47 C.1TDEA ELECTRONIC CODEBOOK MODE (TECB). 49 C.1.1TECB Encryption 49 C.1.2TECB Decryption 50 C.2.TDEA CIPHER BLOCK CHAINING MODE (
18、TCBC) 51 C.2.1TCBC Encryption 51 C.2.2TCBC Decryption 53 C.3TDEA CIPHER BLOCK CHAINING MODE - INTERLEAVED (TCBC-I) 54 C.3.1TCBC-I Encryption 54 C.3.2TCBC-I Decryption. 56 C.4TDEA CIPHER FEEDBACK MODE (TCFB) 58 C.4.1TCFB1 58 C.4.2TCFB8 65 C.4.3TCFB64 68 C.5TDEA CIPHER FEEDBACK MODE - PIPELINED (TCFB-
19、P) 70 C.5.1TCFB1-P. 70 C.5.2TCFB8-P. 78 C.5.3TCFB64-P. 82 C.6TDEA OUTPUT FEEDBACK MODE (TOFB). 85 C.6.1TOFB Encryption 85 C.6.2TOFB Decryption 86 C.7TDEA OUTPUT FEEDBACK MODE - INTERLEAVED (TOFB-I) 87 C.7.1TOFB-I Encryption 87 C.7.2TOFB-I Decryption. 89 Copyright American National Standards Institut
20、e Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- American Bankers Association ANS X9.52 Figures Figure 1. TDEA Electronic Codebook33 Figure
21、2. TDEA Cipher Block Chaining - Encryption34 Figure 3. TDEA Cipher Block Chaining - Decryption35 Figure 4. TDEA Cipher Feedback-Encryption36 Figure 5. TDEA Cipher Feedback-Decryption37 Figure 6. TDEA Output Feedback-Encryption38 Figure 7. TDEA Output Feedback - Decryption .39 TABLES Table 1 - Schedu
22、le of TECB Encryption 12 Table 2 - Schedule of TECB Decryption13 Table 3 - Schedule of TCBC-I Encryption.18 Table 4 - Schedule of TCBC-I Decryption .20 Table 5 - Schedule of TCFB-P Encryption25 Table 6 - Schedule of TOFB-I Encryption.30 Table B.1 Modes of Operation.45 Table B.2 Crossover Points46 Co
23、pyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- American Bankers AssociationANS X9.52 i Forewor
24、d In order to significantly strengthen DEA and extend its useful lifetime, the use of Triple Data Encryption Algorithm (TDEA) modes of operation are recommended. These TDEA modes of operation not only provide greatly increased cryptographic protection, but because they are based on DEA, the TDEA lea
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