An electronic legal signature that customers can use in place of a regular pen and paper signature when sending documents through the Internet. The digital signature must have three parts: authentication, no repudiation and data integrity (the documents being signed are unalterable). The technology is currently under development. The use of digital signatures has been legalized in the U.S. by the Electronic Signatures in Global and National Commerce Act of 2000.
A structure of binding a principal's identity to it's public key. A certification authority (CA) issues and digitally signs a digital signature.
A digital signature is an encrypted object that binds a digital document to a secret that only the signer should know. It uses a combination of an individual's or entity's private and public keys to create a digital signature (transforming data into a seemingly unintelligible form), and another key to verify a digital signature (returning the message to its original form).
A cryptographic checksum of data encrypted using an entity's private key. The result authenticates the signature as having been generated by an entity, and it protects the data from tampering, since the signature can be verified. A digital signature is an example of a message. If the message is a PKCS#7 message, the message is considered to be in PKCS format.
A transformation of an electronic message using an asymmetric cryptosystem and a hash function such that a person receiving the initial message and a STAR Account Holder's Public Key can accurately determine: • Whether the transformation was created using the Private Key that corresponds to the STAR Account Holder's Public Key; and • Whether the initial message has been altered since the transformation was made.
A mathematical code appended to an electronic data transmission that is used to validate the identity of the signer, verify that the document has not been altered and ensure against repudiation of the transaction. Digital signatures use public-key cryptography and work in conjunction with digital certificates. (They are not digitized versions of handwritten signatures.)
The result of a two-step process applied to a given block of data. First, the result of applying hash function to the data is obtained. Second, that result is encrypted using the signer's private key. Digital signatures can be used to ensure integrity, authenticity, and non-repudiation of data. Examples of digital signature algorithms include DSA, RSA, and ECDSA.
Digital signatures, like written signatures, are a method of authenticating the source of a document and/or its author. A common form of digital signatures are digital certificates, whereby the issuing company vouches for you and gives you a unique identification that can be verified by a merchant prior to accepting an order.
A technique for proving that a message has not been tampered with, using public key cryptography.
The result of encrypting a hash of a message or document with a private key. A digital signature is used to verify the authenticity of the sender and the integrity (unaltered condition) of the message or document. See also hash.
An electronic identifier used for security. It verifies that the document originated from the individual whose signature is attached to it and that it has not been altered since it was signed. Usually accomplished using some form of encryption.
A technique used to prevent denial of a transaction or message by the sender. A technique used to authenticate a transaction or message by the sender. The digital signature is generated using a cryptographic algorithm and information that identifies the user, including a cryptographic key. Digital signatures do not, by themselves, prevent the sender from repudiating the message. The sender can claim that his private signature key was stolen and used by someone else to fraudulently sign the message.
A digital code that uniquely identifies the sender and which is usually attached to an electronically transmitted document.
A means of verifying the sender and integrity of a message. The sender calculates a message digest of the message and then encrypts it with his private key. This is the signature, which is sent with the message. The recipient is able to decrypt the signature with the senders public key, and compare the result with a message digest generated by the recipient.
A block of data which is generated using some secret/ private key, and only the corresponding public key can be used to verify that this block of data was really created by that private key. Digital signature is usually used to verify whether a message really comes from the claimed originator, and simultaneously guarantees the integrity of the message.
An electronic version of a traditional signature that can be used as a means of identifying and authenticating documents sent and received electronically.
An electronic signature that can be used to show that a document has been signed and that the document has not been subsequently modified. This can be done using a real hand written signature, captured using an electronic touch tablet, or by using an encryption key known only by the sender.
A method for proving the authorship of an electronic document. Often this is generated by the author encrypting the document with his or her private-key.
Electronically generated, digitized (as opposed to graphically created) authorization that is uniquely linkable and traceable to an empowered officer.
Used to verify the author and integrity of an electronic document, e.g., an e-mail message.
an accepted mark, such as a person's signature, transmitted electronically definition of digital signature defined as a virtual authorization meaning of digital signature as the virtual confirmation of an authorization
Digital data that enables a system to verify the integrity and origins of digital assets. See "tamper-detect" watermarking.
An electronic signature that can be applied to any electronic document. The signature involves hashing the document and then encrypting the result with the sender's private key. Any trading partner can verify the signature by decrypting it with the sender's public key, recomposing the hash of the document, and comparing the two hash values for equality.
A technique to 'sign' digital data. The purpose, as with a paper-and-ink signature, is to verify that the contents agree with the senders intention. Loosely, to avoid forgery. Digital signature schemes usually depend on a public key system of some sort.
An electronic signature based upon cryptographic methods of originator authentication, computed by using a set of rules and a set of parameters such that the identity of the signer and the integrity of the data can be verified.
Any type of text or message, encrypted with a private key, thereby identifying the source.
A digital signature is a code attached to an encrypted e-mail message used to verify the identity of the sender, and to prove that the message has not been forged or tampered with.
A mathematical encryption technique that associates a specific person with a given computer file, such as a document, and indicates that the file has not been altered since that person signed it. Should not be confused with making a digital (or electronic) representation of a written signature.
Means authentication of any electronic record by a subscriber by means of an electronic method or procedure in accordance with the provisions of section 3 of the Information Technology Act, 2000.
A type of electronic signature that transforms a message using an asymmetric cryptosystem such that a person having the initial message and the signer's public key can accurately determine: (a) whether the transformation was created using the private key that corresponds to the signer's public key and (b) whether the initial message has been altered since the transformation was made (ORS 192.835(4)) (see Electronic Signature).
an authentication method based on encryption and authorization codes to “sign†electronic documents, such as a PayMode DPA. A digital signature has the same legal force and effect as a manual or “wet†signature.
An electronic signature that cannot be forged. It is a computed digest of the text that is encrypted and sent with the text message. The recipient decrypts the signature and recomputes the digest from the received text. If the digests match, the message is authenticated and proved intact from the sender.
A phrase (like John J. Jones) that is encrypted with a sender's private key and attached like a signature to an encrypted message to ensure that the sender is who he (or she) claims to be. The recipient uses the sender's public key to decrypt the signature.
a digital code that can be attached to an electronically transmitted message to uniquely identify the sender
Unique codes derived by an algorithm from the document. They function like handwritten signatures for printed documents.
A legally useful electronic equivalent to facsimile signature, including signatures generated for a variety of entities including human and machine sources. Based on digital certificates attributable to well-known healthcare oriented certificate authorities; incorporating cryptographically secure techniques for signature generation and validation.
Piece of data sent with an encoded message to uniquely identify the originator and verify the message has not been altered after sending.
An electronic, encryption-based stamp of authentication on a form or a section of a form. This signature confirms that the form or section originated from the signer and has not been altered.
A code created from both the data to be signed and the private key of the signer. This code is unique for each new piece of data. Even a single comma added to a message changes the digital signature for that message. Successful validation of your digital signature by appropriate software not only provides evidence that you approved the transaction or message, but also provides evidence that the data has not changed since you digitally signed it. See also nonrepudiation, tamper detection.
A digital signature is an electronic analog to a written personal signature; a logical hash (mathematical summary) of information enciphered using an asymmetric key unique to the signer. A digital signature can be used to provide evidence of the origin of a message.
Data value generated by a public key algorithm based on the contents of a block of data and a private key, yielding an individualized crypto checksum.
Digital signatures are a way to verify that an email message is really from the person who supposedly sent it and that it hasn't been changed. You may have received emails that have a block of letters and numbers at the bottom of the message. Although it may look like useless text or some kind of error, this information is actually a digital signature. To generate a signature, a mathematical algorithm is used to combine the information in a key with the information in the message. The result is a random-looking string of letters and numbers.
Encoded information that identifies and authenticates the author of an electronic document.
A verification process that relies on cryptography. It allows the recipient to know the sender’s identity and that there have been no alterations to the message during transit.
systems allow people and organizations to electronically certify such features as their identity, their ability to pay, or the authenticity of an electronic document. More information available at http://www.cdt.org/digsig
A means of authenticating the identity of the sender of a digital message and proving the integrity of the message by means of the data appended to that message
A summary, or digest, of a certificate that is encrypted by a user's private key. It can be verified by anybody having the corresponding public key. The Trust Manager can use this signature to verify that the certificate has not been tampered with.
Data appended to, or a cryptographic transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and to protect against forgery (eg by the recipient).
CLICK HERE for definition definition of digital signature defined Tim Berners-Lee's definition of digital signature defined
A means of ensuring that a message has not been tampered with and that it originates from the claimed sender.
Electronic signature used for signing documents transmitted via the telecommunications network. An electronic signature is a combined signature and lock protecting against alterations in a document. It will be possible to see if the sender of a document is actually the same as the one stated. At the same time it will be possible to check if the contents of a document correspond to the original transmitted and that there have been no alterations in transit.
A digital code which verifies the person or company sent the information.
An advanced security feature that enables users to verify the source of messages and to verify that the contents have not been modified during transit.
A personal authentication method based on encryption and secret authorization codes used for "signing" electronic documents.
An electronic signature created using a private signing key.
Refers to the specific type of electronic signature technology that uses public key cryptography. A digital signature is an alphanumeric number attached to a document that's both unique to the document and to the person signing the document.
A digital signature is like a paper signature, but it is electronic. A digital signature cannot be forged. A digital signature provides verification to the recipient that the file came from the person who sent it, and it has not been altered since it was signed. The result of a transformation of a message by means of a cryptographic system using keys such that a Relying Party can determine: (1) whether the transformation was created using the private key that corresponds to the public key in the signer's digital certificate; and (2) whether the message has been altered since the transformation was made.
computed data that connects a sender's identity to information being sent. Cryptography is used to construct digital signatures in public key environments.
A technique or procedure for the sender of a message to attach additional data to that message which forms a unique and unforgeable identifier of the sender and the message
A digital signature is a form of electronic signature, which allow messages to be 'signed' in a way which associates the signer of the message with its content. It is not a digitised image of a handwritten signature. A digital signature links a particular person to an electronic document and offers greater security than a handwritten signature because it cannot be fraudulently applied to different documents.
a digital signature assures the recipient that the message or file came from the purported sender and is not a forgery
String of bits that identifies the originator of a message or transaction and is the result of the application of the originator's private key to a one-way hash of the (encrypted) message file. Also provides message integrity.
A count of the number of bits in a message. If the count matches a digital signature on a remote server that tracks spam digital signatures, the message may be spam. trimMail Inbox consults digital signature servers, and adds their input to the message score.
An encoding document with a private key to preserve the document ownership.
An electronic signature that can be used to ensure that a document has not been modified since the signature was applied.
Is the result of encrypting the message digest with the private key of the sender of said message. Anyone can verify the validity of the digital signature, using the public key of the signer.
A small piece of code that is used to authenticate the sender of data. Digital signatures are created with encryption software for verification purposes. A private key is used to create a digital signature, and a corresponding public key can be used to verify that the signature was really generated by the holder of the private key. See asymmetric cryptography.
A type of electronic signature that is used to guarantee the integrity of the data. When linked to the identity of the signer—using a security token such as X.509 digital certificates—a digital signature can be used for nonrepudiation since it links the signer with the signed document.
electronic signature used to authenticate the identity of the sender of a message or data
systems allow people and organizations to electronically certify such features as their identity, their ability to pay, or the authenticity of an electronic document. The enciphering process usually involves an algorithm and a key. In enciphering, each letter of the message is replaced by another letter or figure.
Confirms that an e-mail message, macro, or program originated from a trusted source who signed it. Also confirms that the message, macro, or program has not been altered.
Data included within a digital document that identifies who produced it. It can also be used to detect and track any changes that have been made to the document.
A checksum or hash of a message encrypted with the sending party's private key. The signature is added to the message; the receiving party can use the signature to receive assurance that the original data was not modified in transit and to verify that the data came from the nominal sender.
An electronic signature created using a public-key algorithm. A digital signature can be used by the recipient to authenticate the identity of the sender and to ensure the integrity of the message.
A code that allows absolute authentication of the origin and integrity of a document, check, or electronic cash that has been sent over a computer network. A blind signature allows authentication without revealing the identity of the sender.
The number derived by performing cryptographic operations on the text to be signed. This operation, or hash function (also called hash algorithm), is performed on the binary code of the text. The result is known as the message digest, and always has a fixed length. A signature algorithm is applied to the message digest, resulting in the digital signature. See Spotlight Digital Signatures, Part 1 _____________________________________________________________________________
An electronic signature considered to be reliable and secure. Uses public-key infrastructure (see PKI) to authenticate the sender and verify the information contained in transmitted documents.
Signature created from an algorithm that can't be separated from a message and then attached to a different or altered message.
n. In e-commerce, data that is appended to, or is a cryptographic transformation of, a data unit and that enables the recipient of the data unit to verify the source and integrity of the unit and to recognize potential forgery.
Information that is encrypted with an entity private key and is appended to a message to assure the recipient of the authenticity and integrity of the message. The digital signature proves that the message was signed by the entity that owns, or has access to, the private key or shared secret symmetric key.
systems allow people and organizations to electronically certify such features as their identity, their ability to pay, or the authenticity of an electronic document. More information available at h Up;,'~:~;~:.~.~;4'd.!..,-~!:g,il.dJgsig:.
A method for proving that the holder of a private key is the originator of a message
A hash of a message that uniquely identifies the sender and proves that the message hasn't been changed since transmission.
A digital signature is an electronic signature that may be used for authentication during business transactions. It also checks that the content of the transaction has not been altered during transfer. Digital signatures are available with security-enabled SIM cards (with WIM), please contact your service provider/network operator for further details and availability.[Page top
A use of public key cryptography to authenticate a message. Digital signatures use a private key to indicate that the signature was made by the owner of that key. See also public key cryptography, private key.
A section of data appended to a message which authenticates the information. Signatures are encoded by the sender’s private key and can then verified by the sender’s public key. Any unauthorised changes to the file will be reported by an invalid signature for that file.
A digital guarantee that a file has not been altered, as if it were carried in an "electronically sealed" envelope. The "signature" is an encrypted digest (one-way hash function) of the text message, executable, or other file.
Digital signature is the electronic equivalent of signing a receipt and is intended to replace the required visual check of ID cards, hand-written signatures, and paper receipts. Digital signature technology can fulfill the requirements of authentication and key non-repudiation conditions in establishing legally binding commercial transactions. Mobile wallets, used in combination with digital signatures, not only greatly improve the security of mobile transactions, but are also convenient and easy to use.
A piece of information, a digitized form of signature, that provides sender authenticity, message integrity and nonrepudiation. A digital signature is generated using the sender's private key or applying a one-way hash function.
Data that proves that a document (or other piece of data) was not modified since being processed by a particular entity. Generally, what this really means is that, if someone 'signs' a piece of data, anyone who has the right public key can demonstrated which private key was used to sign the data.
The digital signature law came into effect in April 2001. Japan's first business license for digital signature authentication was subsequently granted to a Tokyo company in July 2001 by the Ministry of Economy, Trade and Industry and two other ministries
Unlike the handwritten signature, which does not change very much over time, the digital signature is unique to every document that is signed. The digital signature makes use of the fact that, using an algorithm, it is possible to calculate a unique numeric value for any given document. This value can be encrypted using an asymmetric algorithm presenting a private key, and adding a public key certificate. This collection of items is the 'digital signature'. Quite a bit more complicated that a handwritten one. However, unlike the handwritten signature, anyone can, using the public key and its associated certificate, decrypt the unique value. Also, they can calculate that value for themselves by using the same algorithm. If the two values are equal they can be certain of two things. That the owner/controller of the private key 'signed' the document and that the document has not been altered or forged. In its way, then, the digital signature is much more powerful than the handwritten signature because it can prevent any change to a document after it has been digitally signed.
Like a digital certificate, a digital signature is a data string that is verified by a Certificate Authority, and is attached to an electronic message so that it can verify that the sender is really who they claim to be. The difference between a digital certificate and a digital signature is found in how the message is encrypted and decrypted.
The digital equivalent of an authentic, handwritten signature. A digital signature is a piece of data attached to an electronic file, asserting that the owner of the digital signature wrote or authorized the file. [see also: Authorization, Authentication
Forgery is a growing concern among Netizens. After all, who's to say that a message with your name on it is really from you and not somebody pretending to be you? Digital signatures are a means of proving that a file or email message belongs to a specific person, much as a driver's license proves identity in real life. Digital signatures have the added benefit of verifying that your message has not been tampered with. When you sign a message, a hash function--a computation that leaves a specific code, or "digital fingerprint"--is applied to it. If the fingerprint on the recipient's message doesn't match the original fingerprint, the message has been altered. Digital signatures are often used in combination with strong-encryption software to create a secure channel of communication, in which both privacy and identity are protected.
A "digital signature" is a form of electronic signature, a unique string of mathematical code associated with a particular person that is attached to or incorporated in electronic documents sent by that person. Extra data appended to a message which identifies and authenticates the sender and message data using public-key encryption. Return to the top
(or public-key digital signature) is an encryption scheme for authenticating digital information that should not be confused with ordinary physical signatures on paper or with an electronic signature, but implemented using techniques from the field of public-key cryptography. A digital signature method generally defines two complementary algorithms, one for signing and the other for verification, and the output of the signing process is also called a digital signature. More Info...
A method of signing electronic documents (otherwise digital data) using Public Key Cryptography.
An encrypted field, normally encrypted using the sender’s private key, which is attached to a message to prove its source and integrity
A use of public key cryptography to authenticate a message. The private key is used, showing that the signature must have been made by the owner of that key. A secure hash of the entire document is signed, so that any change to the document will invalidate the signature.
ensures that the file originated with the entity signing it and that it was not tampered with after the signature was applied. However, the sender could still be an impersonator and not who the sender claims to be. To verify that the message was indeed sent by the person or organization claiming to send it requires a digital certificate (digital ID), which is issued by a certification authority.
A data element allowing the recipient of a message or transaction to verify the content and sender
this signature is needed to determine the integrity of the source.
An electronic object used similarly to a physical signature, with the addition that it guarantees no alterations have been made to the message or file that was originally signed. It includes of a hash digest of the message which is encrypted with a users private key. This provides a guarantee of authentication and integrity as only the user knows their own private key and only the same users public key can be used to decrypt the hash digest. The hash digest can then be checked to validate that the message has not been changed.
A way to ensure whether a message was actually sent by the person who claimed to have sent it. The sender's private key encrypts the signature, and the recipient decrypts the signature with the sender's public key. Digital signatures use public key cryptography and work in conjunction with certificates
An authentication process using encryption to ensure that a communication that has been received has not been tampered with.
Digital signatures are created when a public key algorithm is used to sign messages with senders' private keys. A digital signature assures that a document is authentic, has not been forged by another entity, has not been altered, and cannot be repudiated by the sender.
To create a digital signature, the signing software first creates a one-way hash from the data to be signed (such as a newly issued certificate). The one-way hash is then encrypted with the private key of the signer. The resulting digital signature is unique for each piece of data signed. Even a single comma added to a message changes the digital signature for that message. Successful decryption of the digital signature with the signer's public key and comparison with another hash of the same data provides tamper detection. Verification of the certificate chain for the certificate containing the public key provides authentication of the signer. See also nonrepudiation, encryption.
Data that is bundled with a message or transmitted separately and is used to identify and authenticate the sender and message data. A valid digital signature also confirms that the message has not been tampered with.
A cryptographic protocol that ensures the authenticity as well as the integrity of digital data. A digital signature typically is realized by encrypting the hash value of the data to be protected with the private key.
is a unique electronic signature that is used to authenticate electronic documents and transactions and to ensure that documents have not been tampered with.
Like a written signature, this electronic function identifies who is sending an outgoing e-mail message. You must digitally sign all ASI TOPPS II and ASCII file e-mail submissions to CalTOP.
A message that has been 'hashed', and encrypted using the sender's private key.
A type of electronic signature that is generally considered the most reliable and secure. Digital signatures use public key infrastructure (PKI) to authenticate the sender and verify the information contained in the document. With the passage of the electronic signatures act, digital signatures are expected to become increasingly popular for exchanging information, conducting transactions and signing contracts over the Internet.
A value computed with a cryptographic algorithm and appended to a data object in such a way that any recipient of the data can use the signature to verify the data's origin and integrity. (See: data origin authentication service, data integrity service, digitized signature, electronic signature, signer.) [RFC 2828
An electronic signature created using a private signature key.
A digital signature is a value computed with a cryptographic algorithm and appended to a data object in such a way that any recipient of the data can use the signature to verify the data's origin and integrity.
A digital signature is enabled by public key cryptography. It provides a means to digitally authenticate devices and individual users. A signature is formed when data is encrypted with a user's private key. A digital certificate receives its signature when it is signed by a certification authority (CA).
A Digital Signature in many ways is just like a traditional handwritten signature and can identify a person who has signed a document. The benefit of using a Digital Signature over a handwritten signature is that the signature also contains information about the validity of the signature such as showing if any changes or alterations have taken place since the document was signed.
Use of a private and public key to create an encrypted document only the recipient can read.
a coded message added to a document or data that verifies the identity of the sender
Data encrypted with a private key. The associated public key is used to verify that the signature was signed with the private key.
A term for a secure transaction code used to encode sensitive personal information sent over a network so that the decoder will know that it is unique to the sender.
A digital signature (not to be confused with a digital certificate) is an electronic rather than a written signature that can be used by someone to authenticate the identity of the sender of a message See certificates, RSA.
Digital certification or stamp that authenticates an individual's signature is legitimate. This is done using encryption technology.
Data appended to a part of a message that enables a recipient to verify the integrity and origin of a message.
Data that binds a sender's identity to the information being sent. A digital signature may be bundled with any message, file, or other digitally encoded information, or transmitted separately. Digital signatures are used in public key environments and provide nonrepudiation and integrity services. Compare with digital certificate.
A piece of data that is attached to an electronic file that serves as the digital equivalent of a handwritten signature.
A device that uniquely identifies the sender of an electronic message or document. The purpose of a digital signature is to guarantee that senders of such messages really are who they claim to be.
Encryption process that validates the identity of a signer and ensures that a message has not been altered. It is not a digitized version of a handwritten signature. Digital signatures employ public key cryptography along with digital certificates.
A string of bits appended to a message (encrypted hash) that provides authentication and data integrity.
Data appended to, or a cryptographic transformation of, a data unit that allows a recipient of that data to prove the source and integrety of the data unit. It protects against forgery, even by the recipient.
Not to be confused with a "signature" or a "SIG," digital code that is attached to electronically transmitted data. Since the code is unique, unforgeable and secured through encryption, digital signatures serve to guarantee the authenticity of the sender.
A digital signature is created when a public key algorithm is used to sign the sender's message with the sender's private key. The digital signature assures that the document is authentic, has not been forged by another entity, has not been altered, and cannot be repudiated by the sender.
An encrypted text block that validates a certificate or other file. A → Certification Authority creates a signature by generating a hash of the Public Key embedded in a Certificate, then encrypting the hash with its own Private Key. Only the CA's public key can decrypt the signature, verifying that the CA has authenticated the network entity that owns the Certificate. See: SSL/TLS Encryption
A Digital Signature is created by signing the Message Digest (Message Hash) using the Private Key. It ensures the Identity of the Sender, and the Integrity of the Data.
A string of bits affixed to an electronic message (encrypted hash) that provides authentication and data integrity.
A digital code attached to an online message that distinctly identifies the sender and confirms that a message has not been altered during transmission.
The digital equivalent of a written signature, providing cryptographic evidence that the original document is authentic, unaltered, not forged, and nonrepudiable, almost always using a public key algorithm. The signature can be verified by any other user who has the corresponding verification public key.
An encoded message used to verify the integrity and security of a package.
An electronic code that is unique and virtually impossible to copy or transfer.
A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender. 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 e-ccommerce and are a key component of most authentication schemes.
Essential for business-to-business transactions, this technology uses mathematical formulas (algorithms) to create complementary pairs of numbers, called encryption keys. One of the two keys may be published in a user's computer. To make sure that the computer user knows that the digital signature hasn't been altered, there are organizations called certification authorities that can certify the identity of a person. Similar to the concept of a notary, they provide seals of approval called digital certificates. Digital certificates are usually issued in different classes, each class being associated with a different level of security.
Process that ensures the identity of the person signing whereby a checksum is generated based on the document to be signed and a code known only to the user.
An electronic identification of a person or thing created by using a public key algorithm. Intended to verify to a recipient the integrity of data and identity of the sender of the data.
An electronic signature that is impossible to forge. Instead, the digital signature comes from a digest of the text encrypted and sent with the text message. The recipient decrypts the signature and retrieves the digest from the received text. A match authenticates the message.
The transformation of a message using Public Key Cryptography such that an Authorized Relying Party having the initial message and the Certificate Holder's Public Key can accurately determine (1) whether the transformation was created using the Private Key that corresponds to the Holder's Public Key, and (2) whether the message has been altered since the transformation was made. (See Private Key, Public Key, Public Key Cryptography.)
A data string which associates a message (in digital form) with some originating entity. A cryptographic primitive which is fundamental in authentication, authorization and non-repudiation is the digital signature. The purpose of a digital signature is to provide a means for an entity to bind its identity to a piece of information. The process of signing entails transforming the message and some secret information held by the entity into a tag called a signature.
A cryptographic code consisting of a hash, to indicate that data has not changed, that can be decrypted with the public key of the creator of the signature.
lectronic signature based on encryption and the use of sender's private key.
A digital code created with a private key. Signatures allow authentication of information by the process of signature verification. When you sign a message or a file, a program uses your private key to create a digital code that is unique to both the contents of the message and your private key. Anyone can use your public key to verify your signature.
An encrypted signature that cannot be broken - a trusted way to identify a specific party (person, company). There are several levels of encryption and trusted third parties are usually involved.
A digital signature is like a paper signature, except that it is fully electronic. A digital signature is impossible to forge, making it more secure than a paper signature. A digital signature provides a guarantee to a recipient that the signed file came from the person who sent it, and that it was not altered since it was signed.
An electronic identification of a person or thing, intended to verify to a recipient the integrity of data sent to them, and the identity of the sender. Creating a digital signature involves elaborate mathematical techniques that the sender and recipient can both perform on the transmitted data. Performing identical formulas on identical data should produce identical results at both the sending and receiving end. If the recipient's results do not equal the sender's results, the message may have been tampered with en route. If the message was modified after being sent -- even if all someone did was change the punctuation on a sentence, or added an extra space between two of the words -- you could tell. A digital signature typically depends upon three elements: public key encryption Certificate Authority, and a digital certificate.
A hash of a message that is encrypted with the sender's private key.
The electronic equivalent of a person's unique writing of their own name, usually performed today using public key cryptography. To create a digital signature, a hash function is performed on a message to create a unique message digest. The message digest is then encrypted using the sender's private key; the recipient decrypts the digest using the sender's public key. The recipient uses the public key of the sender to verify the authenticity of the sender, who should be the only one possessing that private key.
The encryption of a message digest with a private key.
A means of authenticating electronic documents. A digital signature is actually a special kind of encrypted message needed for electronic commerce.
An electronic signature, created using a public-key algorithmused to establish the authenticity of electronic messages or documents.
From Glossary of "Weaving the Web" ( 1999-07-23) A very large number created in such a way that it can be shown to have been done only by somebody in possession of a secret key and only by processing a document with a particular content. It can be used for the same purposes as a person's handwritten signature on a physical document. Something you can do with public key cryptography. W3C work addresses the digital signature of XML documents. The Signed XML activity at W3C
signature numérique The result of a transformation of a message by means of a cryptographic system using keys such that a person who has the initial message can determine: (a) whether the transformation was created using the key that corresponds to the signer's key; and (b) whether the message has been altered since the transformation was made. Source: Policy for Public Key Infrastructure Management in the Government of Canada
A means of 'signing' a document by performing a mathematical calculation involving the document and a private encryption key. The signature can be verified on receipt by performing a different mathematical calculation on the digital signature with the user's public encryption key.
E-mail encryption code that a person, Web site, or company attaches to an electronic message to verify the identity of the message sender. 12.24
ensures that a message was actually sent by the person claiming to send it.
A digital signature is created by a mathematical computer program. It is not a hand-written signature nor a computer-produced picture of one. The signature is like a wax seal that requires a special stamp to produce it, and is attached to an Email message or file. The origin of the message or file may then be verified by the digital signature (using special tools).
Just as a paper document is authenticated by a signature, an electronic message can be authenticated by a digital signature. Digital signatures are another way to assure the recipient of an electronic message that the message is coming from the right party.
A means for originators of a message, file, or other digitally encoded information to bind their identity to the information. The process of digitally signing information entails transforming the information, as well as some secret information held by the sender, into a tag called a signature. Digital signatures are used in public key environments, and they provide nonrepudiation and integrity services. See also: Digital Signature Standard (DSS); service; time stamp
The electronic equivalent of a handwritten signature, digital signatures can authenticate the identity of sender of the message or the signer of the document as well as ensure that the integrity of the content of the message in the sent document has not been interfered with during the transmission process.
An electronic message that cannot be forged. It is used to ensure that a message has not been tampered with in transit. By running text through a one-way hash algorithm to produce a message digest and encrypting that digest with the senderâ€(tm)s private key, it produces an electronic document that is used by VPNs to prove the identity of the sender and the authenticity of the enclosed data. One use of digital signatures is during IKE exchanges, where public key values are digitally signed to prevent man-inthe- middle attacks.