Saturday, June 20, 2009

Definitions of digital signature on the Web:

  • 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.
  • 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.
  • A digital signature is an electronic rather than a written signature that can be used by someone to authenticate the identity of the sender of a message or of the signer of a document. It can also be used to ensure that the original content of the message or document that has been conveyed is unchanged.
  • 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
  • A block of data attached to a message that serves to "digitally sign" the message; it is transmitted along with the message to a recipient. The purpose of the digital signature is to identify the sender, verify the message has not been altered in transit, and provide support for nonrepudiation. It is a two-step cryptographic process: first, the message to be transmitted undergoes a hash algorithm (for example, SHA-1) to obtain a message digest (or hash value). ...
  • systems allow people and organizations to electronically certify such features as their identity, their ability to pay, or the authenticity of an electronic document.
  • 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.
  • 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 signature creation.
  • 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.
  • 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.
  • An encrypted message digest which is appended to a plaintext or encrypted message to verify the identity of the sender. The signature is encrypted with the user's private key and can only be decrypted with the corresponding public key. The same key pairs may be used for signature and encryption purposes but separate key pairs for each purpose are usually recommended.
  • 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.
  • An electronic version of a traditional signature that can be used as a means of identifying and authenticating documents sent and received electronically.
  • The origin of data can be proved by means of a digital signature. The term describes electronic signatures that are generated and verified using asymmetric encryption. ...
  • 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 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.
  • An electronic signature that authenticates the identity of the sender, ensures the original content of the message is unchanged, is easily transportable, cannot be easily repudiated, cannot be imitated, and can be automatically time-stamped
  • Any type of text or message, encrypted with a private key, thereby identifying the source.
  • 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.
  • The password entered during the approval process. The Digital signature verifies that a specific user has created or approved an electronic document and that the document has not been altered since it was signed.
  • Piece of data sent with an encoded message to uniquely identify the originator and verify the message has not been altered after sending.
  • 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 Digital Signature is a mark (in digital form) that only the sender of an electronic transmission can make but which is easily recognised as belonging to the sender.
  • 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.
  • The result of a cryptographic transformation of data which, when properly implemented, and used within a complete infrastructure provides the services of: 1. origin authentication, 2. data integrity, and 3. signer non-repudiation.
  • Digital signatures are a method of authenticating digital information analogous to ordinary physical signatures on paper, but implemented using techniques from the field of cryptography. Digital signatures differ in some respects from their physical counterparts, however.


Natalia said...


Andrea said...

Wow. You have posted so many definitions of digital signatures in the above article. Each one of them is up to the mark and holds the same meaning that a digital signature conveys. Thanks for posting.
electronic signature Microsoft