The Clinical Document Architecture, introduced
by Health Level Seven, is a XML-based standard intending
to specify the encoding, structure, and semantics of clinical
documents for exchange. Since the clinical document is in
XML form, its authenticity and integrity could be guaranteed
by the use of the XML signature published by W3C.
While a clinical document wants to conceal some personal
or private information, the document needs to be redacted.
It makes the signed signature of the original clinical
document not be verified. The redactable signature is thus
proposed to enable verification for the redacted document.
Only a little research does the implementation of the
redactable signature, and there still not exists an appropriate
scheme for the clinical document. This paper will investigate
the existing web-technologies and find a compact and
applicable model to implement a suitable redactable
signature for the clinical document viewer.
