The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows

Metadata

Publisher: IETF
Doc Type: Specification
Pages: 18
Abstract: The Microsoft Windows 2000 implementation of Kerberos introduces a new encryption type based on the RC4 encryption algorithm and using an MD5 HMAC for checksum. This is offered as an alternative to using the existing DES-based encryption types. The RC4-HMAC encryption types are used to ease upgrade of existing Windows NT environments, provide strong cryptography (128-bit key lengths), and provide exportable (meet United States government export restriction requirements) encryption. This document describes the implementation of those encryption types. This memo provides information for the Internet community.
Publication Date: 2006-12-01
Status Note: Historic
DOI: 10.17487/RFC4757
Link: https://doi.org/10.17487/RFC4757
Author(s): Karthik Jaganathan
Larry Zhu
John Brezak
Keyword(s): HMAC-MD5

Latest version of IETF RFC 4757

Document Versions — IETF RFC 4757

▶ IETF RFC 4757 (2006-12-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Amended by:

IETF RFC 6649 [Active*]

Normative Reference(s)

IETF RFC 1320 [Superseded*]
IETF RFC 1321 [Active*]
IETF RFC 1964 [Active*]
IETF RFC 2104 [Active, Amended*]
IETF RFC 2119 [Active*]
IETF RFC 3961 [Active*]
IETF RFC 3962 [Active*]
IETF RFC 4120 [Active*]
IETF RFC 4537 [Active*]

Bibliographic Reference(s)

Fluhrer, S. and D. McGrew, "Statistical Analysis of the Alleged RC4 Keystream Generator", Fast Software Encryption: 7th International Workshop, FSE 2000, April 2000, < http://www.mindspring.com/~dmcgrew/rc4-03.pdf >. EXTERNAL
den Boer, B. and A. Bosselaers, "An Attack on the Last Two Rounds of MD4", Proceedings of the 11th Annual International Cryptology Conference on Advances in Cryptology, pages: 194 - 203, 1991. EXTERNAL
Wang, X., Lai, X., Feng, D., Chen, H., and X. Yu, "Cryptanalysis of Hash functions MD4 and RIPEMD", August 2004, < http://www.infosec.sdu.edu.cn/paper/md4-ripemd- attck.pdf >. EXTERNAL
Mironov, I., "(Not So) Random Shuffles of RC4", Advances in Cryptology -- CRYPTO 2002: 22nd Annual International Cryptology Conference, August 2002, < http://eprint.iacr.org/2002/067.pdf >. EXTERNAL
Mantin, I., "Predicting and Distinguishing Attacks on RC4 Keystream Generator", Advances in Cryptology -- EUROCRYPT 2005: 24th Annual International Conference on the Theory and Applications of Cryptographic Techniques, May 2005. EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/RFC4757.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

IETF RFC 4757, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows. Available at https://doi.org/10.17487/RFC4757

Snippet:

IETF RFC 4757, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows. Available at https://doi.org/10.17487/RFC4757

HTML (ISO 690 compliant)

Preview:

IETF RFC 4757, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows. Available at https://doi.org/10.17487/RFC4757

Snippet:

<span class="citation"><cite>IETF RFC 4757</cite>, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows. Available at <a href="https://doi.org/10.17487/RFC4757" target="_blank" rel="noopener">https://doi.org/10.17487/RFC4757</a></span>

SMPTE's HTML Pub

Preview:

IETF RFC 4757, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows
doi: 10.17487/RFC4757
url: https://doi.org/10.17487/RFC4757

Snippet:

<li>
<cite id="bib-rfc4757">IETF RFC 4757</cite>, The RC4-HMAC Kerberos Encryption Types Used by Microsoft Windows
<span class="doi">10.17487/RFC4757</span>
</li>

Referenced By

IETF RFC 6113 [Active*]
IETF RFC 6150 [Active*]
IETF RFC 6649 [Active*]
IETF RFC 8429 [Active*]