RFC 3447 (rfc3447) - Page 1 of 72


Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography Specifications Version 2



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Network Working Group                                         J. Jonsson
Request for Comments: 3447                                    B. Kaliski
Obsoletes: 2437                                         RSA Laboratories
Category: Informational                                    February 2003


     Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography
                      Specifications Version 2.1

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This memo represents a republication of PKCS #1 v2.1 from RSA
   Laboratories' Public-Key Cryptography Standards (PKCS) series, and
   change control is retained within the PKCS process.  The body of this
   document is taken directly from the PKCS #1 v2.1 document, with
   certain corrections made during the publication process.

Table of Contents

   1.       Introduction...............................................2
   2.       Notation...................................................3
   3.       Key types..................................................6
      3.1      RSA public key..........................................6
      3.2      RSA private key.........................................7
   4.       Data conversion primitives.................................8
      4.1      I2OSP...................................................9
      4.2      OS2IP...................................................9
   5.       Cryptographic primitives..................................10
      5.1      Encryption and decryption primitives...................10
      5.2      Signature and verification primitives..................12
   6.       Overview of schemes.......................................14
   7.       Encryption schemes........................................15
      7.1      RSAES-OAEP.............................................16
      7.2      RSAES-PKCS1-v1_5.......................................23
   8.       Signature schemes with appendix...........................27
      8.1      RSASSA-PSS.............................................29
      8.2      RSASSA-PKCS1-v1_5......................................32
   9.       Encoding methods for signatures with appendix.............35



Jonsson & Kaliski            Informational


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