PKCS #5: Password-Based Cryptography Specification Version 2.1
RFC 8018
| Document | Type |
RFC - Informational
(January 2017; No errata)
Obsoletes RFC 2898
Was draft-moriarty-pkcs5-v2dot1 (individual in sec area)
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| Shepherd write-up | Show (last changed 2016-09-05) | ||
| IESG | IESG state | RFC 8018 (Informational) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Stephen Farrell | ||
| Send notices to | (None) | ||
| IANA | IANA review state | IANA OK - No Actions Needed | |
| IANA action state | No IANA Actions | ||
Internet Engineering Task Force (IETF) K. Moriarty, Ed.
Request for Comments: 8018 Dell EMC
Obsoletes: 2898 B. Kaliski
Category: Informational Verisign
ISSN: 2070-1721 A. Rusch
RSA
January 2017
PKCS #5: Password-Based Cryptography Specification
Version 2.1
Abstract
This document provides recommendations for the implementation of
password-based cryptography, covering key derivation functions,
encryption schemes, message authentication schemes, and ASN.1 syntax
identifying the techniques.
This document represents a republication of PKCS #5 v2.1 from RSA
Laboratories' Public-Key Cryptography Standards (PKCS) series. By
publishing this RFC, change control is transferred to the IETF.
This document also obsoletes RFC 2898.
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 7841.
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/rfc8018.
Moriarty, et al. Informational [Page 1]
RFC 8018 PKCS #5 v2.1 January 2017
Copyright Notice
Copyright (c) 2017 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
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Moriarty, et al. Informational [Page 2]
RFC 8018 PKCS #5 v2.1 January 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Notation . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Salt and Iteration Count . . . . . . . . . . . . . . . . . . 7
4.1. Salt . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2. Iteration Count . . . . . . . . . . . . . . . . . . . . . 9
5. Key Derivation Functions . . . . . . . . . . . . . . . . . . 9
5.1. PBKDF1 . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2. PBKDF2 . . . . . . . . . . . . . . . . . . . . . . . . . 11
6. Encryption Schemes . . . . . . . . . . . . . . . . . . . . . 13
6.1. PBES1 . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1.1. PBES1 Encryption Operation . . . . . . . . . . . . . 13
6.1.2. PBES1 Decryption Operation . . . . . . . . . . . . . 15
6.2. PBES2 . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.2.1. PBES2 Encryption Operation . . . . . . . . . . . . . 16
6.2.2. PBES2 Decryption Operation . . . . . . . . . . . . . 16
7. Message Authentication Schemes . . . . . . . . . . . . . . . 17
7.1. PBMAC1 . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.1.1. PBMAC1 Generation Operation . . . . . . . . . . . . . 17
7.1.2. PBMAC1 Verification Operation . . . . . . . . . . . . 18
8. Security Considerations . . . . . . . . . . . . . . . . . . . 18
9. Normative References . . . . . . . . . . . . . . . . . . . . 19
Appendix A. ASN.1 Syntax . . . . . . . . . . . . . . . . . . . . 23
A.1. PBKDF1 . . . . . . . . . . . . . . . . . . . . . . . . . 23
A.2. PBKDF2 . . . . . . . . . . . . . . . . . . . . . . . . . 23
A.3. PBES1 . . . . . . . . . . . . . . . . . . . . . . . . . . 25
A.4. PBES2 . . . . . . . . . . . . . . . . . . . . . . . . . . 26
A.5. PBMAC1 . . . . . . . . . . . . . . . . . . . . . . . . . 26
Appendix B. Supporting Techniques . . . . . . . . . . . . . . . 27
B.1. Pseudorandom Functions . . . . . . . . . . . . . . . . . 28
Show full document text