This document summarizes the changes that the XML Security Working Group has made to the XML Signature Syntax and Processing Specification Second Edition in preparing a proposed 1.1.
Updated to Version 1.1, updated date and versoin links. Updated editor information to add Kelvin Yiu as editor, updated entries for Frederick Hirsch and Thomas Roesssler to include 1.1 editing.
Added new section, 4.4.3, "The ECKeyValue Element"
Added new section, 6.5.3, "Exclusive XML Canonicalization 1.0"
Removed "Authors' Address" section
Add new namespace for 1.1 specific features, while retaining earlier namespace for unchanged features. Clarification of use of namespace prefixes and XML internal entities. Clarification regarding versioning.
Affiliation update for Konrad Lanz. Add statement acknowledging contributions from the XML Security WG to 1.1.
Example updated to use rsa-sha256 SignatureMethod algorithm and sha256 DigestMethod algorithm.
Example updated to use sha256 DigestMethod algorithm.
Example updated to use sha256 DigestMethod algorithm.
Example updated to use sha256 DigestMethod algorithm.
Added preamble for dsig11 namespace, including DOCTYPE and schema material.
Added XPath Filter 2 Transform as alternative to URI fragment identifiers, in addition to XPath Transform.
KeyInfo ElementEditorial, replace &dsig; with
dsig:.
KeyValue ElementChange RSA from RECOMMENDED to REQUIRED in note that the corresponding structured keys are defined in the Signature Algorithms section.
Add ECDSA as REQUIRED in list.
ECKeyValue ElementNew section
Define ECKeyValue element. Include editorial note that working group has considered but not accepted an alternative design and may change decision if additional information is obtained.
New section
Define ECParameters element.
New section
Profile RFC 4050 with respect to ECDSA key formats.
RetrievalMethod ElementAdd note to describe the need to use a Transform to obtain content of KeyInfo referenced by ID.
X509Data ElementAdd dsig11:OCSPResponse element to list of elements that may be included.
Add RECOMMENDED certificate encoding to be BER or DER subset.
Add note regarding use of X509IssuerSerial and possible issue with schema validation when large serial numbers are used.
Add OCSPResponse element to schema definition for X509Data, with comment noting it should be in dsig11: namespace.
Added note that the working group does not have consensus on manditory algorithms and note some of the positions regarding the choice.
Reformat the list of algorithms into separate Required and Optional lists, for clarity.
Add SHA256 as required Digest algorithm.
Add SHA384 and SHA512 as optional Digest algorithms.
Add HMAC-SHA256 as Recommended MAC algorithm.
Add HMAC-SHA384 and HMAC-SHA512 as optional MAC algorithms.
Add RSAwithSHA256 as required Signature algorithm.
Add ECDSAwithSHA256 as required Signature algorithm.
Change so that DSAwithSHA1 is only required as Signature algorithm for Signature verification, but is optional for Signature generation. Previously it was Required for both.
Add RSAwithSHA384,RSAwithSHA512, ECDSAwithSHA1, ECDSAwithSHA384, ECDSAwithSHA512 as optional Signature algorithms.
Add Exclusive XML Canonicalization 1.0 with Comments as recommended canonicalization algorithm.
Add XPath Filter 2.0 as Recommended transform algorithm.
Add recommendation to use least expressive transform possible to achieve result.
Add note that implementation requirements for XPath transform may be downgraded to optional in future version of specification.
Add introduction noting possible concerns with digest algorithm resistance to collisions and strongly recommending use of SHA-256 in preference to SHA-1.
Add identifier and information for SHA-256 digest algorithm.
Add identifier and information for SHA-384 digest algorithm.
Add identifier and information for SHA-512 digest algorithm.
Add identifiers for HMAC-SHA256, HMAC-SHA384, and HMAC-SHA512 algorithms.
Add security considerations note regarding DSA key sizes.
Change section title from "PKCS1 (RSA-SHA1)" to "RSA (PKCS#1 v1.5)".
Add identifiers for RSA-SHA256, RSA-SHA384, and RSA-SHA512 algorithms.
New section.
Identifiers and information for ECDSA algorithms, including ECDSA-SHA1, ECDSA-SHA256, ECDSA-SHA384, and ECDSA-SHA512 algorithms.
Remove text regarding Normalization Form C.
Clarify inputs and outputs for algorithm.
Clarify inputs and outputs for algorithm.
New Section
Define identitifers, input and output and other information for Exclusive XML Canonicalization 1.0.
Add text that implementation requirements are listed in the Algorithm Identifier and Implementation Rquirements section.
Clarify inputs and outputs for algorithm.
Clarify inputs and outputs for algorithm.
Clarify inputs and outputs for algorithm.
Clarify inputs and outputs for algorithm.
Fix typo, replace "descendents" with "descendants".
Fix typo, replace "Implementors" with "Implementers".
Add XML Signature 1.1 Schema Instance to the list.
Add editors note that section needs update to split into normative and non-normative references.
Add references to RCF 2560 (OCSP), RFC 3279 (PKIX), RFC 4050 (ECDSA for XML Digital Signatures) and RFC 4051 (Additional XML Security URIs).
Add references to SEC1 and SEC2 (Elliptic Curve Cryptography).
Add references to FIPS PUB 180-2 for SHA-256, SHA-384 and SHA-512.
Add reference to SP 800-57 for Key Management.
Add reference to RFC 3061 for URN namespace of Object Identifiers.
Add reference for XML Encryption.
Correct URIs associated with reference for XML Signature Requirements