Signature file

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Signature file may refer to:

  • A File signature identifies a file or verifies the content of a file (e.g. checksum). The signature can identify a file from within the file or be kept in a separate file or database.
  • In document retrieval the signature file method competes with the inverted index method to produce query results.
  • A signature block, or sig file is a block of text automatically appended at the bottom of an email message.
  • Digital signature
  • Electronic signature