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digital signature
A cryptographically derived binary string used to assure information authenticity, integrity, and nonrepudiation.
Digital signatures can generally be externally verified by entities not in possession of the key used to sign the information. For example, a secure hash of the information encrypted with the originator's private key when an asymmetric cryptosystem is used. Some algorithms that are used in digital signatures cannot be used to encrypt data. (e.g., DSA).
Context Categories:
Data Security