Sign a message

Perform a cryptographic calculation using a message, a signature for the message, and a public key, to determine whether the signature was generated by someone knowing the corresponding private key.
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Any technique designed to provide the electronic equivalent of a handwritten signature to demonstrate the origin and integrity of specific data. Digital signatures are an example of electronic signatures. See digital signature.
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This is an information system utilizing an algorithm or series of algorithms which provide a cryptographic key pair consisting of a private key and a corresponding public key. The keys of the pair have the properties that (1) the public key can verify a digital signature that the private key creates, and (2) it is computationally infeasible to discover or derive the private key from the public key. The public key can therefore be disclosed without significantly risking disclosure of the private key. This can be used for confidentiality as well as for authentication.
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A standard that specifies that all federally approved digital signature algorithms must use a secure hashing function. The National Security Administration’s standard for verifying an electronic message.
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A quantity (number) associated with a message that only someone with knowledge of your private key could have generated, but that can be verified through knowledge of your public key.
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