6.4.8 <sp:SupportingToken>

Specifies security tokens that are included in the security header and may optionally include additional message parts to sign and/or encrypt. For SALT, <SupportingToken> Assertion is used mainly to include Username Token in the security header when <sp:AsymmetricBinding> Assertion is used.

For more information, see <sp:AsymmetricBinding>

• Limitations