public ProcessResult Process(ElementNode node)
{
var processResult = new ProcessResult();
if (string.IsNullOrEmpty(node?.Value?.ToString()))
{
return(processResult);
}
var input = node.Value.ToString();
// Hash the id part for "Reference.reference" node and hash whole input for other node types
if (node.IsReferenceStringNode())
{
var newReference = ReferenceUtility.TransformReferenceId(input, _cryptoHashFunction);
node.Value = newReference;
}
else
{
node.Value = _cryptoHashFunction(input);
}
_logger.LogDebug($"Fhir value '{input}' at '{node.Location}' is hashed to '{node.Value}'.");
processResult.AddProcessRecord(AnonymizationOperations.CryptoHash, node);
return(processResult);
}
public ProcessResult Process(ElementNode node, ProcessContext context = null,
Dictionary <string, object> settings = null)
{
var processResult = new ProcessResult();
if (string.IsNullOrEmpty(node?.Value?.ToString()))
{
return(processResult);
}
// prefix the domain, if set
var domainPrefix = settings?.GetValueOrDefault("domain-prefix", string.Empty);
var domain = settings?
.GetValueOrDefault("domain", null)?
.ToString();
var input = node.Value.ToString();
// Pseudonymize the id part for "Reference.reference" node and
// pseudonymize whole input for other node types
if (node.IsReferenceStringNode() || IsReferenceUriNode(node, input))
{
// if the domain setting is not set,
// create a domain from the reference, ie "Patient/123" -> "Patient"
domain ??= ReferenceUtility
.GetReferencePrefix(input)
.TrimEnd('/');
node.Value = ReferenceUtility.TransformReferenceId(
input,
x => GetOrCreatePseudonym(x, domainPrefix + domain));
}
else
{
node.Value = GetOrCreatePseudonym(input, domainPrefix + domain);
}
processResult.AddProcessRecord(AnonymizationOperations.Pseudonymize, node);
return(processResult);
}
