INTERNET-DRAFT Donald E. Eastlake 3rd
Motorola Laboratories
Expires: December 2004 July 2004
Additional XML Security URIs
---------- --- -------- ----
<draft-eastlake-xmldsig-uri-08.txt>
Donald E. Eastlake 3rd
Status of This Document
By submitting this Internet-Draft, I certify that any applicable
patent or other IPR claims of which I am aware have been disclosed,
and any of which I become aware will be disclosed, in accordance with
RFC 3668.
Distribution of this document is unlimited. Comments should be sent
to the author. This document is an Internet-Draft and is in full
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Abstract
A number of URIs intended for use with XML Digital Signatures,
Encryption, and Canonnicalization are defined. These URIs identify
algorithms and types of keying information.
Acknowledgements
Glenn Adams, Merlin Hughs, Gregor Karlinger, Brian LaMachia, Shiho
Moriai, Joseph Reagle, Russ Housley, and Joel Halpern.
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Table of Contents
Status of This Document....................................1
Abstract...................................................1
Acknowledgements...........................................1
Table of Contents..........................................2
1. Introduction............................................3
2. Algorithms..............................................4
2.1 DigestMethod Algorithms................................4
2.1.1 MD5..................................................4
2.1.2 SHA-224..............................................4
2.1.3 SHA-384..............................................5
2.2 SignatureMethod Message Authentication Code Algorithms.5
2.2.1 HMAC-MD5.............................................5
2.2.2 HMAC SHA Variations..................................6
2.2.3 HMAC-RIPEMD160.......................................7
2.3 SignatureMethod Public Key Signature Algorithms........7
2.3.1 RSA-MD5..............................................7
2.3.2 RSA-SHA256...........................................8
2.3.3 RSA-SHA384...........................................8
2.3.4 RSA-SHA512...........................................9
2.3.5 RSA-RIPEMD160........................................9
2.3.6 ECDSA-SHA*...........................................9
2.3.7 ESIGN-SHA1...........................................9
2.4 Minimal Canonicalization..............................10
2.5 Transform Algorithms..................................10
2.5.1 XPointer............................................10
2.6 EncryptionMethod Algorithms...........................11
2.6.1 ARCFOUR Encryption Algorithm........................11
2.6.2 Camellia Block Encryption...........................12
2.6.3 Camellia Key Wrap...................................12
2.6.4 PSEC-KEM............................................13
3. KeyInfo................................................13
3.1 PKCS #7 Bag of Certificates and CRLs..................13
3.2 Additional RetrievalMethod Type Values................14
4. IANA Considerations....................................15
5. Security Considerations................................15
6. Copyright and Disclaimer...............................15
Normative References......................................16
Informative References....................................17
Author's Address..........................................19
Expiration and File Name..................................19
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1. Introduction
XML Digital Signatures, Canonicalization, and Encryption have been
standardized by the W3C and by the joint IETF/W3C XMLDSIG working
group [W3C]. All of these are now W3C Recommendations and IETF
Informational or Standards Track documents. They are available as
follows:
IETF level W3C REC Topic
----------- ------- -----
[RFC 3275] Draft Std [XMLDSIG] XML Digital Signatures
[RFC 3076] Info [CANON] Canonical XML
- - - - - - [XMLENC] XML Encryption
[RFC 3741] Info [EXCANON] Exclusive XML Canonicalization
All of these standards and recommendations use URIs [RFC 2396] to
identify algorithms and keying information types. This document is a
convenient reference list of URIs and descriptions for algorithms in
which there is substantial interest but which can not or have not
been included in the main documents for some reason. Note in
particular that raising XML digital signature to Draft Standard in
the IETF required remove of any algorithms for which there was not
demonstrated interoperability from the main standards document. This
required removal of the Minimal Canonicalization algorithm, in which
there appears to be continued interest, to be dropped from the
standards track specification. It is included here.
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2. Algorithms
The URI [RFC 2396] being dropped from the standard due to the
transition from Proposed Standard to Draft Standard is included in
Section 2.4 below with its original
http://www.w3.org/2000/09/xmldsig#
prefix so as to avoid changing the XMLDSIG standard's namespace.
Additional algorithms are given URIs that start with
http://www.w3.org/2001/04/xmldsig-more#
An "xmldsig-more" URI does not imply any official W3C status for
these algorithms or identifiers nor does it imply that they are only
useful in digital signatures. Currently, dereferencing such URIs may
or may not produce a temporary placeholder document. Permission to
use these this URI prefix has been given by the W3C.
2.1 DigestMethod Algorithms
These algorithms are usable wherever a DigestMethod element occurs.
2.1.1 MD5
Identifier:
http://www.w3.org/2001/04/xmldsig-more#md5
The MD5 algorithm [RFC 1321] takes no explicit parameters. An example
of an MD5 DigestAlgorithm element is:
<DigestAlgorithm
Algorithm="http://www.w3.org/2001/04/xmldsig-more#md5"/>
An MD5 digest is a 128-bit string. The content of the DigestValue
element shall be the base64 [RFC 2045] encoding of this bit string
viewed as a 16-octet octet stream.
2.1.2 SHA-224
Identifier:
http://www.w3.org/2001/04/xmldsig-more#sha224
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The SHA-224 algorithm [RFC sha224] takes no explicit parameters. An
example of a SHA-224 DigestAlgorithm element is:
<DigestAlgorithm
Algorithm="http://www.w3.org/2001/04/xmldsig-more#sha224" />
A SHA-224 digest is a 224 bit string. The content of the DigestValue
element shall be the base64 [RFC2045] encoding of this string viewed
as a 28-octet stream. Because it takes roughly the same amount of
effort to compute a SHA-224 message digest as a SHA-256 digest and
terseness is usually not a criteria in XML application, consideration
should be given to the use of SHA-256 as an alternative.
2.1.3 SHA-384
Identifier:
http://www.w3.org/2001/04/xmldsig-more#sha384
The SHA-384 algorithm [FIPS 180-2] takes no explicit parameters. An
example of a SHA-384 DigestAlgorithm element is:
<DigestAlgorithm
Algorithm="http://www.w3.org/2001/04/xmldsig-more#sha384" />
A SHA-384 digest is a 384 bit string. The content of the DigestValue
element shall be the base64 [RFC2045] encoding of this string viewed
as a 48-octet stream. Because it takes roughly the same amount of
effort to compute a SHA-384 message digest as a SHA-512 digest and
terseness is usually not a criteria in XML application, consideration
should be given to the use of SHA-512 as an alternative.
2.2 SignatureMethod Message Authentication Code Algorithms
Note: Some text in this section is duplicated from [RFC 3275] for the
convenience of the reader. 3275 is normative in case of conflict.
2.2.1 HMAC-MD5
Identifier:
http://www.w3.org/2001/04/xmldsig-more#hmac-md5
The HMAC algorithm [RFC 2104] takes the truncation length in bits as
a parameter; if the parameter is not specified then all the bits of
the hash are output. An example of an HMAC-MD5 SignatureMethod
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element is as follows:
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-md5">
<HMACOutputLength>112</HMACOutputLength>
</SignatureMethod>
The output of the HMAC algorithm is ultimately the output (possibly
truncated) of the chosen digest algorithm. This value shall be base64
[RFC 2405] encoded in the same straightforward fashion as the output
of the digest algorithms. Example: the SignatureValue element for the
HMAC-MD5 digest
9294727A 3638BB1C 13F48EF8 158BFC9D
from the test vectors in [RFC 2104] would be
kpRyejY4uxwT9I74FYv8nQ==
Schema Definition:
<simpleType name="HMACOutputLength">
<restriction base="integer">
</simpleType>
DTD:
<!ELEMENT HMACOutputLength (#PCDATA) >
The Schema Definition and DTD immediately above are copied from [RFC
3275].
Although some cryptographic suspicions have recently been cast on MD5
for use in signatures such as RSA-MD5 below, this does not effect use
of MD5 in HMAC.
2.2.2 HMAC SHA Variations
Identifiers:
http://www.w3.org/2001/04/xmldsig-more#hmac-sha224
http://www.w3.org/2001/04/xmldsig-more#hmac-sha256
http://www.w3.org/2001/04/xmldsig-more#hmac-sha384
http://www.w3.org/2001/04/xmldsig-more#hmac-sha512
SHA-224, SHA-256, SHA-384, and SHA-512 [FIPS 180-2, RFC sha224] can
also be used in HMAC as described in section 2.2.1 above for HMAC-
MD5.
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2.2.3 HMAC-RIPEMD160
Identifier:
http://www.w3.org/2001/04/xmldsig-more#hmac-ripemd160
RIPEMD-160 [RIPEMD-160] can also be used in HMAC as described in
section 2.2.1 above for HMAC-MD5.
2.3 SignatureMethod Public Key Signature Algorithms
These algorithms are distinguished from those in Section 2.2 above in
that they use public key methods. That is to say, the verification
key is different from and not feasibly derivable from the signing
key.
2.3.1 RSA-MD5
Identifier:
http://www.w3.org/2001/04/xmldsig-more#rsa-md5
This implies the PKCS#1 v1.5 padding algorithm described in [RFC
2437]. An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-md5"
/>
The SignatureValue content for an RSA-MD5 signature is the base64
[RFC 2405] encoding of the octet string computed as per [RFC 2437],
section 8.1.1, signature generation for the RSASSA-PKCS1-v1_5
signature scheme. As specified in the EMSA-PKCS1-V1_5-ENCODE function
in [RFC 2437, section 9.2.1], the value input to the signature
function MUST contain a pre-pended algorithm object identifier for
the hash function, but the availability of an ASN.1 parser and
recognition of OIDs is not required of a signature verifier. The
PKCS#1 v1.5 representation appears as:
CRYPT (PAD (ASN.1 (OID, DIGEST (data))))
Note that the padded ASN.1 will be of the following form:
01 | FF* | 00 | prefix | hash
where "|" is concatenation, "01", "FF", and "00" are fixed octets of
the corresponding hexadecimal value, "hash" is the MD5 digest of the
data, and "prefix" is the ASN.1 BER MD5 algorithm designator prefix
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required in PKCS #1 [RFC 2437], that is,
hex 30 20 30 0c 06 08 2a 86 48 86 f7 0d 02 05 05 00 04 10
This prefix is included to make it easier to use standard
cryptographic libraries. The FF octet MUST be repeated the maximum
number of times such that the value of the quantity being CRYPTed is
one octet shorter than the RSA modulus.
Due to increases in computer processor power and advances in
cryptography, use of RSA-MD5 is NOT RECOMMENDED.
2.3.2 RSA-SHA256
Identifier:
http://www.w3.org/2001/04/xmldsig-more#rsa-sha256
This implies the PKCS#1 v1.5 padding algorithm [RFC 2437] as
described in section 2.3.1 but with the ASN.1 BER SHA-256 algorithm
designator prefix. An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
2.3.3 RSA-SHA384
Identifier:
http://www.w3.org/2001/04/xmldsig-more#rsa-sha384
This implies the PKCS#1 v1.5 padding algorithm [RFC 2437] as
described in section 2.3.1 but with the ASN.1 BER SHA-384 algorithm
designator prefix. An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha384"
/>
Because it takes about the same effort to calculate a SHA-384 message
digest as it does a SHA-512 message digest, it is suggested that
RSA-SHA512 be used in preference to RSA-SHA384 where possible.
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2.3.4 RSA-SHA512
Identifier:
http://www.w3.org/2001/04/xmldsig-more#rsa-sha512
This implies the PKCS#1 v1.5 padding algorithm [RFC 2437] as
described in section 2.3.1 but with the ASN.1 BER SHA-512 algorithm
designator prefix. An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha512"
/>
2.3.5 RSA-RIPEMD160
Identifier:
http://www.w3.org/2001/04/xmldsig-more/rsa-ripemd160
This implies the PKCS#1 v1.5 padding algorithm [RFC 2437] as
described in section 2.3.1 but with the ASN.1 BER RIPEMD160 algorithm
designator prefix. An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more/rsa-ripemd160"
/>
2.3.6 ECDSA-SHA*
Identifiers
http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha1
http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha224
http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha256
http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha384
http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha512
The Elliptic Curve Digital Signature Algorithm (ECDSA) [FIPS 186-2]
is the elliptic curve analogue of the DSA (DSS) signature method. For
a detailed specifications of how to use it with SHA hash functions
and XML Digital Signature, please see [X9.62] and [ECDSA].
2.3.7 ESIGN-SHA1
Identifier
http://www.w3.org/2001/04/xmldsig-more#esign-sha1
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http://www.w3.org/2001/04/xmldsig-more#esign-sha224
http://www.w3.org/2001/04/xmldsig-more#esign-sha256
http://www.w3.org/2001/04/xmldsig-more#esign-sha384
http://www.w3.org/2001/04/xmldsig-more#esign-sha512
The ESIGN algorithm specified in [IEEE P1363a] is a signature scheme
based on the integer factorization problem. It is much faster than
previous digital signature schemes so ESIGN can be implemented on
smart cards without special co-processors.
An example of use is
<SignatureMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#esign-sha1"
/>
2.4 Minimal Canonicalization
Thus far two independent interoperable implementations of Minimal
Canonicalization have not been announced. Therefore, when XML
Digital Signature was advanced from Proposed Standard [RFC 3075] to
Draft Standard [RFC 3275], Minimal Canonicalization was dropped from
the standard track documents. However, there is still interest and
indicates of possible future use for Minimal Canonicalization. For
its definition, see [RFC 3075], Section 6.5.1.
For reference, it's identifier remains:
http://www.w3.org/2000/09/xmldsig#minimal
2.5 Transform Algorithms
Note that all CanonicalizationMethod algorithms can also be used as
Transform algorithms.
2.5.1 XPointer
Identifier:
http://www.w3.org/2001/04/xmldsig-more/xptr
This transform algorithm takes an [XPointer] as an explicit
parameter. An example of use is:
<Transform
Algorithm="http://www.w3.org/2001/04/xmldsig-more/xptr">
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<XPointer
xmlns="http://www.w3.org/2001/04/xmldsig-more/xptr">
xpointer(id("foo")) xmlns(bar=http://foobar.example)
xpointer(//bar:Zab[@Id="foo"])
</XPointer>
</Transform>
Schema Definition:
<element name="XPointer" type="string">
DTD:
<!ELEMENT XPointer (#PCDATA) >
Input to this transform is an octet stream (which is then parsed into
XML).
Output from this transform is a node set; the results of the XPointer
are processed as defined in the XMLDSIG specification [RFC 3275] for
a same-document XPointer.
2.6 EncryptionMethod Algorithms
This subsection gives identifiers and information for several
EncryptionMethod Algorithms.
2.6.1 ARCFOUR Encryption Algorithm
Identifier:
http://www.w3.org/2001/04/xmldsig-more#arcfour
ARCFOUR is a fast, simple stream encryption algorithm that is
compatible with RSA Security's RC4 algorithm. An example
EncryptionMethod element using ARCFOUR is
<EncryptionMethod
Algorithm="http://www.w3.org/2001/04/xmldsig-more#arcfour">
<KeySize>40<KeySize>
</EncryptionMethod>
Note that Arcfour makes use of the generic KeySize parameter
specified and defined in [XMLENC].
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2.6.2 Camellia Block Encryption
Identifiers:
http://www.w3.org/2001/04/xmldsig-more#camellia128-cbc
http://www.w3.org/2001/04/xmldsig-more#camellia192-cbc
http://www.w3.org/2001/04/xmldsig-more#camellia256-cbc
Camellia is an efficient and secure block cipher with the same
interface as the AES [Camellia, RFC 3713], that is 128-bit block size
and 128, 192, and 256 bit key sizes. In XML Encryption Camellia is
used in the same way as the AES: It is used in the Cipher Block
Chaining (CBC) mode with a 128-bit initialization vector (IV). The
resulting cipher text is prefixed by the IV. If included in XML
output, it is then base64 encoded. An example Camellia
EncryptionMethod is as follows:
<EncryptionMethod
Algorithm=
"http://www.w3.org/2001/04/xmldsig-more#camellia128-cbc"
/>
2.6.3 Camellia Key Wrap
Identifiers:
http://www.w3.org/2001/04/xmldsig-more#kw-camellia128
http://www.w3.org/2001/04/xmldsig-more#kw-camellia192
http://www.w3.org/2001/04/xmldsig-more#kw-camellia256
Camellia [Camellia, RFC 3713] key wrap is identical to the AES key
wrap algorithm [RFC 3394] specified in the XML Encryption standard
with "AES" replaced by "Camellia". As with AES key wrap, the check
value is 0xA6A6A6A6A6A6A6A6.
The algorithm is the same whatever the size of the Camellia key used
in wrapping, called the key encrypting key or KEK. The implementation
of Camellia is OPTIONAL. However, if it is supported, the same
implementation guidelines as to which combinations of KEK size and
wrapped key size should be required to be supported and which are
optional to be supported should be followed. That is to say, if
Camellia key wrap is supported, they wrapping 128-bit keys with a
128-bit KEK and wrapping 256-bit keys with a 256-bit KEK are REQUIRED
and all other combinations are OPTIONAL.
An example of use is:
<EncryptionMethod
Algorithm=
"http://www.w3.org/2001/04/xmldsig-more#kw-camellia128"
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/>
2.6.4 PSEC-KEM
Identifier:
http://www.w3.org/2001/04/xmldsig-more#psec-kem
The PSEC-KEM algorithm, specified in [ISO/IEC 18033-2], is a key
encapsulation mechanism using elliptic curve encryption.
An example of use is:
<EncryptionMethod
Algorithm="http://www.w3.org/2001/04/xmlenc#psec-kem">
<ECParameters>
<Version>version</Version>
<FieldID>id</FieldID>
<Curve>curve</Curve>
<Base>base</Base>
<Order>order</Order>
<Cofactor>cofactor</Cofactor>
</ECParameters>
</EncryptionMethod>
See [ISO/IEC 18033-2] for information on the parameters above.
3. KeyInfo
In section 3.1 below a new KeyInfo element child is specified while
in section 3.2 additional KeyInfo Type values for use in
RetrievalMethod are specified.
3.1 PKCS #7 Bag of Certificates and CRLs
A PKCS #7 [RFC 2315] "signedData" can also be used as a bag of
certificates and/or certificate revocation lists (CRLs). The
PKCS7signedData element is defined to accommodate such structures
within KeyInfo. The binary PKCS #7 structure is base64 [RFC 2405]
encoded. Any signer information present is ignored. The following
is a example, eliding the base64 data:
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<foo:PKCS7signedData
xmlns:foo="http://www.w3.org/2001/04/xmldsig-more">
...
</foo:PKCS7signedData>
3.2 Additional RetrievalMethod Type Values
The Type attribute of RetrievalMethod is an optional identifier for
the type of data to be retrieved. The result of de-referencing a
RetrievalMethod reference for all KeyInfo types with an XML structure
is an XML element or document with that element as the root. The
various "raw" key information types return a binary value. Thus they
require a Type attribute because they are not unambiguously
parseable.
Identifiers:
http://www.w3.org/2001/04/xmldsig-more#KeyValue
http://www.w3.org/2001/04/xmldsig-more#RetrievalMethod
http://www.w3.org/2001/04/xmldsig-more#KeyName
http://www.w3.org/2001/04/xmldsig-more#rawX509CRL
http://www.w3.org/2001/04/xmldsig-more#rawPGPKeyPacket
http://www.w3.org/2001/04/xmldsig-more#rawSPKISexp
http://www.w3.org/2001/04/xmldsig-more#PKCS7signedData
http://www.w3.org/2001/04/xmldsig-more#rawPKCS7signedData
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4. IANA Considerations
None.
As it is easy for people to construct their own unique URIs [RFC
2396] and, possible, if appropriate, to obtain a URI from the W3C, it
is not intended that any additional
"http://www.w3.org/2001/04/xmldsig-more#" URIs be created beyond
those enumerated in this document. (W3C Namespace stability rules
prohibit the creation of new URIs under
"http://www.w3.org/2000/09/xmldsig#".)
5. Security Considerations
Due to computer speed and cryptographic advances, the use of MD5 as a
DigestMethod or in the RSA-MD5 SignatureMethod is NOT RECOMMENDED.
The cryptographic advances concerned do not effect the security of
HMAC-MD5; however, there is little reason not to go for one of the
SHA series of algorithms.
6. Copyright and Disclaimer
Copyright (C) The Internet Society 2004. This document is subject to
the rights, licenses and restrictions contained in BCP 78, and except
as set forth therein, the authors retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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Normative References
[Camellia] - "Camellia: A 128-bit Block Cipher Suitable for Multiple
Platforms - Design and Analysis -", K. Aoki, T. Ichikawa, M. Matsui,
S. Moriai, J. Nakajima, T. Tokita, In Selected Areas in Cryptography,
7th Annual International Workshop, SAC 2000, August 2000,
Proceedings, Lecture Notes in Computer Science 2012, pp. 39-56,
Springer-Verlag, 2001.
[ECDSA] - "ECDSA with XML-Signature Syntax", S. Blake-Wilson, G.
Karlinger, T. Kobayashi, Y. Want, January 2004. draft-blake-wilson-
xmldsig-ecdsa-*.txt
[FIPS 180-1] - "Secure Hash Standard", (SHA-1) US Federal Information
Processing Standard, 17 April 1995.
[FIPS 180-2] - "Secure Hash Standard", (SHA-1/256/384/512) US Federal
Information Processing Standard, Draft, not yet issued.
[FIPS 180-2change] - "FIPS 180-2, Secure Hash Standard Change Notice
1", proposes adding SHA-224 to [FIPS 180-2].
[FIPS 186-2] - "Digital Signature Standard", National Institute of
Standards and Technology, 2000.
[IEEE P1363a] - "Standard Specifications for Public Key Cryptography:
Additional Techniques", October 2002.
[ISO/IEC 18033-2] - "Information technology -- Security techniques --
Encryption algorithms -- Part 3: Asymmetric ciphers", CD, October
2002.
[RFC 1321] - "The MD5 Message-Digest Algorithm", R. Rivest, April
1992.
[RFC 2104] - "HMAC: Keyed-Hashing for Message Authentication", H.
Krawczyk, M. Bellare, R. Canetti, February 1997.
[RFC 2119] - "Key words for use in RFCs to Indicate Requirement
Levels", S. Bradner, March 1997.
[RFC 2396] - "Uniform Resource Identifiers (URI): Generic Syntax", T.
Berners-Lee, R. Fielding, L. Masinter, August 1998.
[RFC 2405] - "Multipurpose Internet Mail Extensions (MIME) Part One:
Format of Internet Message Bodies", N. Freed, N. Borenstein, November
1996.
[RFC 2437] - "PKCS #1: RSA Cryptography Specifications Version 2.0",
B. Kaliski, J. Staddon, October 1998.
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[RFC 2315] - "PKCS #7: Cryptographic Message Syntax Version 1.5", B.
Kaliski, March 1998.
[RFC 3075] - "XML-Signature Syntax and Processing", D. Eastlake, J.
Reagle, D. Solo, March 2001. (RFC 3075 was obsoleted by RFC 3275 but
is referenced in this document for its description of Minimal
Canonicalization which was dropped in RFC 3275.)
[RFC 3275] - "XML-Signature Syntax and Processing", D. Eastlake, J.
Reagle, D. Solo, March 2002.
[RFC 3394] - "Advanced Encryption Standard (AES) Key Wrap Algorithm",
J. Schaad, R. Housley, September 2002.
[RFC 3713] - "A Description of the Camellia Encryption Algorithm", M.
Matsui, J. Nakajima, S. Moriai, April 2004.
[RFC sha224] - "A 224-bit One-way Hash Function: SHA-224", R.
Housley, December 2003, draft-ietf-pkix-sha224-*.txt.
[RIPEMD-160] - ISO/IEC 10118-3:1998, "Information Technology -
Security techniques - Hash-functions - Part3: Dedicated hash-
functions", ISO, 1998.
[X9.62] - X9.62-200X, "Public Key Cryptography for the Financial
Services Industry: The Elliptic Curve Digital Signature Algorithm
(ECDSA)", Accredited Standards Committee X9, American National
Standards Institute.
[XMLENC] - "XML Encryption Syntax and Processing", J. Reagle, D.
Eastlake, December 2002. <http://www.w3.org/TR/2001/RED-xmlenc-core-
20021210/>
[XPointer] - "XML Pointer Language (XPointer) Version 1.0", W3C
working draft, Steve DeRose, Eve Maler, Ron Daniel Jr., January 2001.
<http://www.w3.org/TR/2001/WD-xptr-20010108>
Informative References
[CANON] - "Canonical XML Version 1.0", John Boyer.
<http://www.w3.org/TR/2001/REC-xml-c14n-20010315>.
[EXCANON] - "Exclusive XML Canonicalization Version 1.0", D.
Eastlake, J. Reagle, 18 July 2002. <http://www.w3.org/TR/REC-xml-
enc-c14n-20020718/>.
[RFC 3076] - "Canonical XML Version 1.0", J. Boyer, March 2001.
D. Eastlake 3rd [Page 17]
INTERNET-DRAFT Additional XML Security URIs
[RFC 3092] - "Etymology of 'Foo'", D. Eastlake 3rd, C. Manros, E.
Raymond, 1 April 2001.
[RFC 3741] - "Exclusive XML Canonicalization Version 1.0", J. Boyer,
D. Eastlake 3rd, J. Reagle, March 2004.
D. Eastlake 3rd [Page 18]
INTERNET-DRAFT Additional XML Security URIs
Author's Address
Donald E. Eastlake 3rd
Motorola Laboratories
155 Beaver Street
Milford, MA 01757 USA
Telephone: +1-508-786-7554 (w)
+1-508-634-2066 (h)
EMail: Donald.Eastlake@motorola.com
Expiration and File Name
This draft expires in December 2004.
Its file name is draft-eastlake-xmldsig-uri-08.txt
D. Eastlake 3rd [Page 19]