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Network Working Group                                       S. Josefsson
Internet-Draft                                                    SJD AB
Intended status: Informational                        September 14, 2010
Expires: March 18, 2011


 PKCS #5 Password Based Key Derivation Function 2 (PBKDF2) Test Vectors
                 draft-josefsson-pbkdf2-test-vectors-06

Abstract

   This document contains test vectors for the Public-Key Cryptography
   Standards (PKCS) #5 Password Based Key Derivation Function 2 (PBKDF2)
   with the Hash-based Message Authentication Code (HMAC) Secure Hash
   Algorithm (SHA-1) pseudorandom function.

Status of this Memo

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   This Internet-Draft will expire on March 18, 2011.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.




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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  PBKDF2 HMAC-SHA1 Test Vectors . . . . . . . . . . . . . . . . . 3
   3.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 5
   4.  Copying conditions  . . . . . . . . . . . . . . . . . . . . . . 5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 5
     7.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . . . 6







































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1.  Introduction

   The Public-Key Cryptography Standards (PKCS) #5 [RFC2898] Password
   Based Key Derivation Function 2 (PBKDF2) is used by several protocols
   to derive encryption keys from a password.

   For example, Salted Challenge Response Authentication Mechanism
   (SCRAM) [RFC5802] uses PBKDF2 with Hash-based Message Authentication
   Code (HMAC) [RFC2104] and Secure Hash Algorithm (SHA-1)
   [FIPS.180-1.1995].

   Test vectors for the algorithm were not included in the original
   specification, but are often useful for implementers.  This document
   addresses the shortcoming.


2.  PBKDF2 HMAC-SHA1 Test Vectors

   The input strings below are encoded using ASCII [ANSI.X3-4.1986].
   The sequence "\0" (without quotation marks) means a literal ASCII NUL
   value (1 octet).

     Input:
       P = "password" (8 octets)
       S = "salt" (4 octets)
       c = 1
       dkLen = 20

     Output:
       DK = 0c 60 c8 0f 96 1f 0e 71
            f3 a9 b5 24 af 60 12 06
            2f e0 37 a6             (20 octets)


     Input:
       P = "password" (8 octets)
       S = "salt" (4 octets)
       c = 2
       dkLen = 20

     Output:
       DK = ea 6c 01 4d c7 2d 6f 8c
            cd 1e d9 2a ce 1d 41 f0
            d8 de 89 57             (20 octets)







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     Input:
       P = "password" (8 octets)
       S = "salt" (4 octets)
       c = 4096
       dkLen = 20

     Output:
       DK = 4b 00 79 01 b7 65 48 9a
            be ad 49 d9 26 f7 21 d0
            65 a4 29 c1             (20 octets)


     Input:
       P = "password" (8 octets)
       S = "salt" (4 octets)
       c = 16777216
       dkLen = 20

     Output:
       DK = ee fe 3d 61 cd 4d a4 e4
            e9 94 5b 3d 6b a2 15 8c
            26 34 e9 84             (20 octets)


     Input:
       P = "passwordPASSWORDpassword" (24 octets)
       S = "saltSALTsaltSALTsaltSALTsaltSALTsalt" (36 octets)
       c = 4096
       dkLen = 25

     Output:
       DK = 3d 2e ec 4f e4 1c 84 9b
            80 c8 d8 36 62 c0 e4 4a
            8b 29 1a 96 4c f2 f0 70
            38                      (25 octets)


     Input:
       P = "pass\0word" (9 octets)
       S = "sa\0lt" (5 octets)
       c = 4096
       dkLen = 16

     Output:
       DK = 56 fa 6a a7 55 48 09 9d
            cc 37 d7 f0 34 25 e0 c3 (16 octets)





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3.  Acknowledgements

   Barry Brachman and Love Hoernquist Aestrand confirmed the test
   vectors (using independent implementations) and pointed out a mistake
   in the salt octet length count.


4.  Copying conditions

   This document should be considered a Code Component and is thus
   available under the BSD license.


5.  Security Considerations

   The security considerations in [RFC2898] apply.  This document does
   not introduce any new security considerations.


6.  IANA Considerations

   None.


7.  References

7.1.  Normative References

   [ANSI.X3-4.1986]
              American National Standards Institute, "Coded Character
              Set - 7-bit American Standard Code for Information
              Interchange", ANSI X3.4, 1986.

   [RFC2104]  Krawczyk, H., Bellare, M., and R. Canetti, "HMAC: Keyed-
              Hashing for Message Authentication", RFC 2104,
              February 1997.

   [RFC2898]  Kaliski, B., "PKCS #5: Password-Based Cryptography
              Specification Version 2.0", RFC 2898, September 2000.

   [FIPS.180-1.1995]
              National Institute of Standards and Technology, "Secure
              Hash Standard", FIPS PUB 180-1, April 1995,
              <http://www.itl.nist.gov/fipspubs/fip180-1.htm>.







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7.2.  Informative References

   [RFC5802]  Newman, C., Menon-Sen, A., Melnikov, A., and N. Williams,
              "Salted Challenge Response Authentication Mechanism
              (SCRAM) SASL and GSS-API Mechanisms", RFC 5802, July 2010.


Author's Address

   Simon Josefsson
   SJD AB
   Hagagatan 24
   Stockholm  113 47
   SE

   Email: simon@josefsson.org
   URI:   http://josefsson.org/


































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