dsig:Algorithms

[s04]   <SignatureMethod Algorithm="http://www.w3.org/2000/02/xmldsig#dsa"/>

• Algorithm identifiers are URIs: extensible, with a few (patent unencumbered) required to implement:

Type	Algorithm	Requirements	Algorithm URI
Digest	SHA1	REQUIRED	http://www.w3.org/2000/09/xmldsig#sha1
Encoding	Base64	REQUIRED	http://www.w3.org/2000/09/xmldsig#base64
MAC	HMAC-SHA1	REQUIRED	http://www.w3.org/2000/09/xmldsig#hmac-sha1
Signature	DSAwithSHA1 (DSS)	REQUIRED	http://www.w3.org/2000/09/xmldsig#dsa
Canonicalization	Canonical XML	REQUIRED	http://www.w3.org/TR/2000/WD-xml-c14n-20000907
Others	XPath	RECOMMENDED	http://www.w3.org/TR/1999/REC-xpath-19991116

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