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Subject: Issue 61: Add wsc:Length attribute to the Implied derived key


61! 


-----Original Message-----
From: Jan Alexander 
Sent: Saturday, April 01, 2006 10:40 PM
To: ws-sx@lists.oasis-open.org
Cc: Marc Goodner
Subject: New Issue: Add wsc:Length attribute to the Implied derived key

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Protocol:  ws-secureconversation

http://www.oasis-open.org/apps/org/workgroup/ws-sx/download.php/17401/ws
-secureconversation-1.3-spec-ed-01-r04.pdf
 
Artifact: spec

Type: design

Title: Add wsc:Length attribute to the Implied derived key

Description:

The section 7.3 describes how to use a shortcut mechanism to derive keys
using security token reference. This issue proposes to add a wsc:Length
attribute description to this section to define the length of the
derived key.
The reason for adding @wsc:Length is to allow sender to specify the
length of the derived key for the recipient. Currently there is no way
how to pass this information for implied derived keys. Additionally, no
default value is currently defined for the implied derived key
mechanism.

Related issues:
None.

Proposed Resolution:

The proposal is to add the following text after line 883:

The @wsc:Length attribute can be used in conjunction with @wsc:Nonce in
the security token reference (STR) to indicate the length of the derived
key. The value of this attribute is an unsigned long value indicating
the size of the key in bytes. If this attribute isn't specified, the
default derived key length value is 32.




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