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Topic: Digital signature

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  Digital Signature Guidelines - Tutorial
Digital signatures use what is known as "public key cryptography," which employs an algorithm using two different but mathematically related "keys;" one for creating a digital signature or transforming data into a seemingly unintelligible form, and another key for verifying a digital signature or returning the message to its original form.
The complementary keys of an asymmetric cryptosystem for digital signatures are arbitrarily termed the private key, which is known only to the signer <20> and used to create the digital signature, and the public key, which is ordinarily more widely known and is used by a relying party to verify the digital signature.
Digital signature verification is the process of checking the digital signature by reference to the original message and a given public key, thereby determining whether the digital signa ture was created for that same message using the private key that corresponds to the referenced public key.
www.abanet.org /scitech/ec/isc/dsg-tutorial.html   (3098 words)

 Digital Signature - What is it?   (Site not responding. Last check: 2007-10-20)
Like the signature you use on written documents today, digital signatures are now being used to identify authors/co-signers of e-mail or electronic data.
The Digital Signature is unique to both the message and the private key used to create it, so it cannot be forged.
If the two hash results are identical, two things have been verified : that the digital signature was created using the signer's private key (assurance that the public key corresponds to the signer's private key) - no one is pretending to be or masquerading as the signer.
www.digitalsignature.be /what.cfm   (1005 words)

 FIPS 186 - (DSS), Digital Signature Standard
A digital signature is an electronic analogue of a written signature in that the digital signature can be used in proving to the recipient or a third party that the message was, in fact, signed by the originator.
The DSA is used by a signatory to generate a digital signature on data and by a verifier to verify the authenticity of the signature.
Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the signatory.
www.itl.nist.gov /fipspubs/fip186.htm   (3753 words)

 German Digital Signature Law   (Site not responding. Last check: 2007-10-20)
The Digital Signature Law is a technical law, since it does not deal with the legal validity of digital signatures; rather, its purpose is to provide the conditions for a secure infrastructure for the use of digital signatures in Germany.
The name of the signature key owner, to which an additional notation must be affixed if there is the possibility of confusion, or an unmistakable pseudonym attributable to the signature key owner which shall be identified as such; 2.
The requesting authorities shall inform the signature key owner about disclosure of the pseudonym as soon as the exercise of their legal duties will no longer be thereby impaired, or if the signature key owner's interest in being so informed outweighs other considerations.
home.earthlink.net /~hldettling/germlaw.htm   (2413 words)

 California Secretary of State Digital Signatures
For a digital signature to be valid for use by a public entity, it must be created by a technology that is accepted for use by the State of California.
Prior to accepting a digital signature, public entities shall ensure that the level of security used to identify the signer of a document is sufficient for the transaction being conducted.
Prior to accepting a digital signature, public entities shall ensure that the level of security used to transmit the signature is sufficient for the transaction being conducted.
www.ss.ca.gov /digsig/regulations.htm   (1861 words)

 DIGITAL SIGNATURE CERTIFICATE, India, Digital Signature MTNL trustline DSC, India, MCA21 Digital Signature Certificate, ...
Digital Signature Certificate issued by mtnlTrustLine can be used to create legally valid Digital Signatures which has the same legal recognition and validity as handwritten signatures.
Digital signatures are going to play an important role in our lives with the gradual electronization of records and documents.
The digital signatures are now accepted at par with handwritten signatures and the electronic documents that have been digitally signed are treated at par with paper documents.
www.digitalsignature.in   (1577 words)

 Information Security Glossary - Digital Signature
For a digital signature to be recognised, and acknowledged as something of integrity, it needs to be trusted by the recipient.
To provide greater digital trust, the Digital Signature is packaged with the certificate of the Certification Authority, and this too may be inspected for validity and expiration.
Most people expect digital signatures to totally replace the use of the ('old fashioned') pen and ink signature with orders and authorities being accepted via digitally signed e-mails, the contents of which may, or may not, be encrypted for additional security.
www.yourwindow.to /information-security/gl_digitalsignature.htm   (343 words)

 Digital signature - Wikipedia, the free encyclopedia
Digital signature is a term with confusing reference.
It is generally taken to be a 'subset' of electronic signatures.
One of the main differences between a digital signature and a written signature is that the user does not "see" what he signs.
en.wikipedia.org /wiki/Digital_signature   (3003 words)

 Digital Signature Presentation
A digital signature is a code attached to an electronic document that uniquely identifies the sender (i.e., authentication), allows for nonrepudiation, and provides for message integrity.
A digital signature, on the other hand, is a secure electronic signature which uses encryption to authenticate the entity who signed the document.
Digital Signature Standard - Digital Signature Standard (DSS) is the digital signature algorithm (DSA) developed by the US National Security Agency (GSA) to generate a digital signature for the authentication of electronic documents.
ils.unc.edu /~johnk/Digital_Signature.htm   (1183 words)

 Java XML Digital Signatures
The purpose of a digital signature is to provide a means for an entity to bind its identity to a piece of information.
Digital signatures use PKC, which employs an algorithm using two different but mathematically related keys: one to create a digital signature and another to verify a digital signature.
XML digital signatures will enable a sender to cryptographically sign data, and the signatures can then be used as authentication credentials or a way to check data integrity.
java.sun.com /developer/technicalArticles/xml/dig_signatures   (3527 words)

 Digital Signatures
Digital signatures are used by programs on the internet and local to the machines to confirm your identity to any third party concerned.
Digital signature of the CA (certification Authority): This is a signature that is issued by the authority that issues the certificates.
When a digital signature is compromised the user that suspects that the certificate is compromised should report the incident to the certificate authority.
www.windowsecurity.com /articles/Digital_Signatures.html   (1782 words)

 Cover Pages: XML Digital Signature
Digital signatures are created and verified using cryptography, the branch of applied mathematics concerned with transforming messages into seemingly unintelligible forms and then back again.
Digital signatures let parties that exchange data ensure the identity of the sender and the integrity of the data.
Signatures may also be separate from the signed content, especially useful when the content is large or binary and would interfere with XML processing of the signature.
xml.coverpages.org /xmlSig.html   (11091 words)

 EFF: Privacy - Digital Signature, ID & Authentication
The proposed DSS uses a public key to verify to a recipient the integrity of data and the identity of the sender of the data.
Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the user who generates the signature.
In addition, the recipient of signed data can use a digital signature in proving to a third party that the signature was in fact generated by the signer of the data.
www.eff.org /Privacy/Digital_signature   (396 words)

 Howstuffworks "How do digital signatures work?"
A digital signature is basically a way to ensure that an electronic document (e-mail, spreadsheet, text file, etc.) is authentic.
The Digital Signature Standard (DSS) is based on a type of public key encryption method that uses the Digital Signature Algorithm (DSA).
DSS is the format for digital signatures that has been endorsed by the US government.
computer.howstuffworks.com /question571.htm   (934 words)

 Cover Pages: Digital Signatures
Digital signatures are created by performing an operation on information such that others can confirm that a holder of a secret performed the operation and that the signed information has not subsequently changed.
This draft defines a signature transform parameter for partial signing or manipulation of XML MIME content as well as processing rules in addition to the XML Digital Signature and XML Encryption processing rules." From the Introduction: "RFC 1847 defines a general mechanism for security multiparts in MIME, defining the Multipart/Signed and Multipart/Encrypted types.
Digital signatures must be at least as good as hand-written signatures at meeting these main goals of signatures: (1) A signature should be proof of authenticity.
xml.coverpages.org /digitalSignature.html   (9230 words)

 What is digital signature? - A Word Definition From the Webopedia Computer Dictionary   (Site not responding. Last check: 2007-10-20)
Like a written signature, the purpose of a digital signature is to guarantee that the individual sending the message really is who he or she claims to be.
Digital signatures are especially important for electronic commerce and are a key component of most authentication schemes.
Provides an overview of the legal significance of signatures, explains how digital signature technology works, and examines how digital signature technology can be applied as a robust computer-based alternative to traditional signatures.
www.webopedia.com /TERM/d/digital_signature.html   (407 words)

 Digital Signature Algorithm - Wikipedia, the free encyclopedia
The Digital Signature Algorithm (DSA) is a United States Federal Government standard or FIPS for digital signatures.
It was proposed by the National Institute of Standards and Technology (NIST) in August 1991 for use in their Digital Signature Standard (DSS), specified in FIPS 186 [1], adopted in 1993.
A minor revision was issued in 1996 as FIPS 186-1 [2], and the standard was expanded further in 2000 as FIPS 186-2 [3].
en.wikipedia.org /wiki/Digital_Signature_Algorithm   (485 words)

 Entrust Resources: Digital Signatures
Digital signatures powered by public-key infrastructure (PKI) technology, are widely recognized as best practice for ensuring digital verification for electronic transactions.
Digital signatures are the most effective, secure, and easy-to-implement method of providing verification while enabling electronic transactions.
Increased awareness of security and privacy issues is resulting in national and international legislation on privacy and digital signatures, as well as industry-specific regulations for selected broad verticals.
www.entrust.com /digitalsig/index.htm?source=google   (212 words)

 [No title]
Further, the Law limits the scope of use of electronic digital signatures to civil law transactions and transactions where electronic digital signatures are specifically permitted under other Russian legislation; as of today, such specific references only exist in the Russian Civil Code.
Accordingly, an electronic digital signature can be used for any civil law contract (with a few exceptions specified below), but cannot be used for signing of any electronic documents submitted to the government authorities.
Activity of the centres that are authorized to authenticate digital signatures and issue the certificates for open keys (the “Centres”) will be subject to regulation by “an authorized federal executive body” which is to be selected (and dismissed) by the Government.
www.bakernet.com /ecommerce/Russia-E-Signature-Alert.doc   (650 words)

 Digital Signature Technology
A digital signature on an e-commerce document serves as a guarantor of data origin, integrity, and nonrepudiation.
Digital signatures have been with us since 1976, when Diffie and Hellman introduced the digital signature as an application of public key cryptography.
A digital signature is superior to a traditional handwritten signature.
www.windowsitpro.com /Articles/Index.cfm?ArticleID=4772   (1021 words)

 The Java Community Process(SM) Program - JSRs: Java Specification Requests - detail JSR# 105   (Site not responding. Last check: 2007-10-20)
More specifically, the XML Digital Signature specification defines an XML signature element type and an XML signature application; conformance requirements for each are specified by way of schema definitions and prose respectively.
The XML Signature is a method of associating a key with referenced data; it does not normatively specify how keys are associated with persons or institutions, nor the meaning of the data being referenced and signed.
Consequently, while the XML Digital Signature specification is an important component of secure XML applications, it itself is not sufficient to address all application security/trust concerns, particularly with respect to using signed XML (or other data formats) as a basis of human-to-human communication and agreement.
www.jcp.org /en/jsr/detail?id=105   (719 words)

 What is digital signature? - a definition from Whatis.com - see also: e-signature
- A digital signature (not to be confused with a digital certificate) is an electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and possibly to ensure that the original content of the message or document that has been sent is unchanged.
Digital signatures are easily transportable, cannot be imitated by someone else, and can be automatically time-stamped.
A digital certificate contains the digital signature of the certificate-issuing authority so that anyone can verify that the certificate is real.
searchsecurity.techtarget.com /sDefinition/0,,sid14_gci211953,00.html   (508 words)

 Digital Signature by ARINC
A digital signature certificate is actually a person's digital identity.
We offer a Certification Authority that issues private/public key pairs and PKI technology to implement digital signatures on electronic documents or provide a secondary means of authentication for predesignated individuals.
Since 1998, ARINC's Digital Signature service has provided a certification authority function, acting as an "electronic notary public." In this trusted role, ARINC binds a person's identity with a digital signature that is accepted by the Federal Aviation Administration and the aviation industry.
www.arinc.com /products/security/digital_signature.html   (330 words)

 Digital Signatures
Utah Digital Signature Act, Utah Code §§ 46-3-101 to 46-3-504, Enacted by L. 1995, ch.
Bradford Biddle, Misplaced Priorities: The Utah Digital Signature Act and Liability Allocation in a Public Key Infrastructure, 33 San Diego L. Rev. 1143 (1996).
The Digital Signature Standard (DSS) is a cryptographic standard promulgated by the National Institute of Standards and Technology (NIST) in 1994.
www.epic.org /crypto/dss   (451 words)

 What is a Digital Signature?
A digital signature is a "stamp" Bob places on the data which is unique to Bob, and is very difficult to forge.
To verify the signature on the document, Pat's software first uses Susan's (the certificate authority's) public key to check the signature on Bob's certificate.
If Bob's public key de-encrypts the signature successfully, then Pat is assured that the signature was created using Bob's private key, for Susan has certified the matching public key.
www.youdzone.com /signature.html   (795 words)

 CNN - California adopts digital signature law - July 30, 1999   (Site not responding. Last check: 2007-10-20)
The company doesn't know which digital signature technology it will use, but expects to use digital signatures "sometime in 1999," said Tim Alban, a spokesman for ETrade.
There isn't any good digital signature technology available now for such applications, and digital signatures are currently not widely adopted, Robb said.
Adopting digital signatures is a "state-by-state battle," since brokerages need to register in each state individually.
www.cnn.com /TECH/computing/9907/30/digisign.idg/index.html   (290 words)

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