Calculates a secure hash of a field for storing in the event. See hashMatch() on how to search for events using hashes. Bits can reduce the width of the output if desired to keep the resulting strings short.

ParameterTypeRequiredDefault ValueDescription
asstringoptional[a]  The name of output field, defaults to the input field.
bitsintegeroptional[a]256 Hash algorithm output bits to keep. Must be a multiple of 8.
  Minimum8 
  Maximum512 
field[b]stringrequired  The name of the field to hash.
hashstringoptional[a]sha256 Hash algorithm.
   Valid Values
   sha256
   sha512
replaceInRawstringbooleanoptional[a]true Replace all substrings in @rawstring that has the input value with the hash too.
saltstringrequired  The name of the secret salt to use.

[a] Optional parameters use their default value unless explicitly set.

[b] The parameter name field can be omitted.

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hashRewrite() Examples

Replace the value in the ssn field with the hash of the existing value, also replacing it in @rawstring

logscale
hashRewrite(ssn, salt="salt1")