Dictionary

Filter

This filter identifies custom text based on a given dictionary.

Required Parameters

At least one of terms or files must be provided.

Parameter

Description

Default Value

terms

A list of terms in the dictionary.

None

files

A list of files containing terms one per line.

None

Optional Parameters

Parameter

Description

Default Value

enabled

When set to false, the filter will be disabled and not applied

true

ignored

A list of terms to be ignored by the filter.

None

fuzzy

When set to true, the dictionary will employ fuzzy comparisons. Use the sensitivity parameter to control the level of fuzziness. Setting this value to false will disable fuzziness and provide a higher level of performance.

false

classification

Used to apply an arbitrary label to the identifier, such as "patient-id", or "account-number."

"custom-identifier"

sensitivity

Controls the "fuzziness" of allowed values to account for misspellings and derivations. Valid values are low, medium, and high. Only applies when fuzzy is set to true.

medium

Filter Strategies

The filter may have zero or more filter strategies. When no filter strategy is given the default strategy of REDACT is used. When multiple filter strategies are given the filter strategies will be applied in as they are listed. See Filter Strategies for details.

Strategy

Description

REDACT

Replace the sensitive text with a placeholder.

RANDOM_REPLACE

Replace the sensitive text with a similar, random value.

STATIC_REPLACE

Replace the sensitive text with a given value.

CRYPTO_REPLACE

Replace the sensitive text with its encrypted value.

HASH_SHA256_REPLACE

Replace the sensitive text with its SHA256 hash value.

Conditions

Each filter strategy may have one condition. See Conditions for details.

Conditional

Description

Operators

TOKEN

Compares the value of the sensitive text.

== , !=

CONTEXT

Compares the filtering context.

== , !=

CONFIDENCE

Compares the confidence in the sensitive text against a threshold value.

< , <=, > , >=, ==, !=

Example Filter Profile

{
"name": "dictionary-example",
"identifiers": {
"dictionaries": [
"customDictionary": {
"terms": ["john", "jane", "doe"],
"files": "c:\temp\dictionary.txt",
"fuzzy": true,
"sensitivity": "medium",
"sectionFilterStrategies": [
{
"strategy": "REDACT",
"redactionFormat": "{{{REDACTED-%t}}}"
}
]
}
]
}
}