Internet Engineering Task Force (IETF) S. Josefsson
Request for Comments: 6070 SJD AB
Category: Informational January 2011
ISSN: 2070-1721
PKCS #5: Password-Based Key Derivation Function 2 (PBKDF2)
Test Vectors
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
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6070.
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Josefsson Informational [Page 1]
RFC 6070 PKCS #5 PBKDF2 Test Vectors January 2011 Table of Contents 1. Introduction ....................................................2 2. PBKDF2 HMAC-SHA1 Test Vectors ...................................2 3. Acknowledgements ................................................4 4. Copying Conditions ..............................................4 5. Security Considerations .........................................4 6. References ......................................................4 6.1. Normative References .......................................4 6.2. Informative References .....................................5 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). "DK" refers to the Derived Key. 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) Josefsson Informational [Page 2]
RFC 6070 PKCS #5 PBKDF2 Test Vectors January 2011 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) 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) Josefsson Informational [Page 3]
RFC 6070 PKCS #5 PBKDF2 Test Vectors January 2011 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) 3. Acknowledgements Barry Brachman and Love Hornquist Astrand 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. References 6.1. 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>. Josefsson Informational [Page 4]
RFC 6070 PKCS #5 PBKDF2 Test Vectors January 2011 6.2. 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/ Josefsson Informational [Page 5]
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