Computer Security Resource Center

Computer Security Resource Center

Computer Security
Resource Center

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one-way hash algorithm

Abbreviation(s) and Synonym(s):

None

Definition(s):

  Hash algorithms which map arbitrarily long inputs into a fixed-size output such that it is very difficult (computationally infeasible) to find two different hash inputs that produce the same output. Such algorithms are an essential part of the process of producing fixed-size digital signatures that can both authenticate the signer and provide for data integrity checking (detection of input modification after signature).
Source(s):
CNSSI 4009-2015 (NIST SP 800-49)