PKCS #1: RSA Encryption Version 1.5
RFC 2313
| Document | Type |
RFC - Informational
(March 1998; No errata)
Obsoleted by RFC 2437
Was draft-hoffman-pkcs-rsa-encrypt (individual)
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|---|---|---|---|
| Last updated | 2013-03-02 | ||
| Stream | Legacy | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Stream | Legacy state | (None) | |
| Consensus Boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | RFC 2313 (Informational) | |
| Telechat date | |||
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Network Working Group B. Kaliski
Request for Comments: 2313 RSA Laboratories East
Category: Informational March 1998
PKCS #1: RSA Encryption
Version 1.5
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 (1998). All Rights Reserved.
Overview
This document describes a method for encrypting data using the RSA
public-key cryptosystem.
1. Scope
This document describes a method for encrypting data using the RSA
public-key cryptosystem. Its intended use is in the construction of
digital signatures and digital envelopes, as described in PKCS #7:
o For digital signatures, the content to be signed
is first reduced to a message digest with a
message-digest algorithm (such as MD5), and then
an octet string containing the message digest is
encrypted with the RSA private key of the signer
of the content. The content and the encrypted
message digest are represented together according
to the syntax in PKCS #7 to yield a digital
signature. This application is compatible with
Privacy-Enhanced Mail (PEM) methods.
o For digital envelopes, the content to be enveloped
is first encrypted under a content-encryption key
with a content-encryption algorithm (such as DES),
and then the content-encryption key is encrypted
with the RSA public keys of the recipients of the
content. The encrypted content and the encrypted
Kaliski Informational [Page 1]
RFC 2313 PKCS #1: RSA Encryption March 1998
content-encryption key are represented together
according to the syntax in PKCS #7 to yield a
digital envelope. This application is also
compatible with PEM methods.
The document also describes a syntax for RSA public keys and private
keys. The public-key syntax would be used in certificates; the
private-key syntax would be used typically in PKCS #8 private-key
information. The public-key syntax is identical to that in both X.509
and Privacy-Enhanced Mail. Thus X.509/PEM RSA keys can be used in
this document.
The document also defines three signature algorithms for use in
signing X.509/PEM certificates and certificate-revocation lists, PKCS
#6 extended certificates, and other objects employing digital
signatures such as X.401 message tokens.
Details on message-digest and content-encryption algorithms are
outside the scope of this document, as are details on sources of the
pseudorandom bits required by certain methods in this document.
2. References
FIPS PUB 46-1 National Bureau of Standards. FIPS PUB 46-1:
Data Encryption Standard. January 1988.
PKCS #6 RSA Laboratories. PKCS #6: Extended-Certificate
Syntax. Version 1.5, November 1993.
PKCS #7 RSA Laboratories. PKCS #7: Cryptographic Message
Syntax. Version 1.5, November 1993.
PKCS #8 RSA Laboratories. PKCS #8: Private-Key Information
Syntax. Version 1.2, November 1993.
RFC 1319 Kaliski, B., "The MD2 Message-Digest
Algorithm," RFC 1319, April 1992.
RFC 1320 Rivest, R., "The MD4 Message-Digest
Algorithm," RFC 1320, April 1992.
RFC 1321 Rivest, R., "The MD5 Message-Digest
Algorithm," RFC 1321, April 1992.
RFC 1423 Balenson, D., "Privacy Enhancement for
Internet Electronic Mail: Part III: Algorithms,
Modes, and Identifiers," RFC 1423, February 1993.
Kaliski Informational [Page 2]
RFC 2313 PKCS #1: RSA Encryption March 1998
X.208 CCITT. Recommendation X.208: Specification of
Abstract Syntax Notation One (ASN.1). 1988.
X.209 CCITT. Recommendation X.209: Specification of
Basic Encoding Rules for Abstract Syntax Notation
One (ASN.1). 1988.
X.411 CCITT. Recommendation X.411: Message Handling
Systems: Message Transfer System: Abstract Service
Definition and Procedures.1988.
X.509 CCITT. Recommendation X.509: The Directory--
Authentication Framework. 1988.
[dBB92] B. den Boer and A. Bosselaers. An attack on the
last two rounds of MD4. In J. Feigenbaum, editor,
Advances in Cryptology---CRYPTO '91 Proceedings,
volume 576 of Lecture Notes in Computer Science,
pages 194-203. Springer-Verlag, New York, 1992.
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