Preimage

Preimage definition in Computer Security terms:

Acronym(s): None

Definition(s): A message Ms that produces a given message digest when it is processed by a hash function.
Source(s): NIST SP 800-106

A message X that produces a given message digest when it is processed by a hash function.
Source(s): NIST SP 800-107 (Superceded by Rev. 1)

Synonym(s): None

 

reference: CSRC Glossary