Disclosing verifiable partial information of signed CDA documents using generalized redactable signatures

Slamanig, Daniel; Stingl, Christian

doi:10.1109/health.2009.5406190

Cited by 4 publications

(10 citation statements)

References 21 publications

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“…A redactable signature scheme has various requirements for the erased message block # upon its applications [1]- [9], [11]. A redactable signature scheme has various requirements for the erased message block # upon its applications [1]- [9], [11].…”

Section: Redactable Signature Schemesmentioning

confidence: 99%

“…In many redactable signature schemes, each redacted message block is represented by a special symbol, such as #. A redactable signature scheme has various requirements for the erased message block # upon its applications [1]- [9], [11]. In [4], it was noted that the explicit marking for each location of the redaction is necessary to thwart semantic attacks when the sizes of message blocks are small.…”

Section: Redactable Signature Schemesmentioning

confidence: 99%

“…In general, a redactable signature is used for documents with unspecific structure, such as bit strings [1]- [6]. Redactable signatures for structured documents are also considered to anonymize medical documents or general XML-documents as in [7], [8] to disclose verifiable partial information of signed clinical document architecture as in [9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Short and Efficient Redactable Signature Based on RSA

Lim¹

2011

ETRI J

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The redactable signature scheme was introduced by Johnson and others in 2002 as a mechanism to support disclosing verifiable subdocuments of a signed document. In their paper, a redactable signature based on RSA was presented. In 2009, Nojima and others presented a redactable signature scheme based on RSA. Both schemes are very efficient in terms of storage. However, the schemes need mechanisms to share random prime numbers, which causes huge time consuming computation. Moreover, the public key in the scheme of Johnson and others is designed to be used only once. In this paper, we improve the computational efficiency of these schemes by eliminating the use of a random prime sharing mechanism while sustaining the storage efficiency of them. The size of our signature scheme is the same as that of the standard RSA signature scheme plus the size of the security parameter. In our scheme, the public key can be used multiple times, and more efficient key management than the scheme of Johnson and others is possible. We also prove that the security of our scheme is reduced to the security of the full domain RSA signature scheme.

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Section: Redactable Signature Schemesmentioning

confidence: 99%

Section: Redactable Signature Schemesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Short and Efficient Redactable Signature Based on RSA

Lim¹

2011

ETRI J

View full text Add to dashboard Cite

show abstract

“…These are named the digital document sanitizing problems as well [6]. Some discussions about these problems are proposed in [7] and [8].…”

Section: Introductionmentioning

confidence: 99%

“…Signature scheme with similar property has also been proposed for XML documents [16]. And various redactable signatures and related signature schemes are continually proposed [7,8,[17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Redactable Signatures for Signed CDA Documents

Hsueh

Tsai

et al. 2010

J Med Syst

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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.

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Disclosing verifiable partial information of signed CDA documents using generalized redactable signatures

Cited by 4 publications

References 21 publications

A Short and Efficient Redactable Signature Based on RSA

A Short and Efficient Redactable Signature Based on RSA

Redactable Signatures for Signed CDA Documents

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