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ReidentifyTableDataWithFpe.cs
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ReidentifyTableDataWithFpe.cs
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// Copyright 2023 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
// [START dlp_reidentify_table_fpe]
using System;
using Google.Api.Gax.ResourceNames;
using Google.Cloud.Dlp.V2;
using Google.Protobuf;
using static Google.Cloud.Dlp.V2.CryptoReplaceFfxFpeConfig.Types;
public class ReidentifyTableDataWithFpe
{
public static Table ReidentifyTableData(
string projectId,
string keyName,
string wrappedKey,
FfxCommonNativeAlphabet alphabet = FfxCommonNativeAlphabet.Numeric,
Table tableToInspect = null)
{
// Instantiate a client.
var dlp = DlpServiceClient.Create();
// Construct the table if null.
var table = tableToInspect;
if (table == null)
{
var row1 = new Value[]
{
new Value { StringValue = "28777" },
new Value { StringValue = "Justin" }
};
var row2 = new Value[]
{
new Value { StringValue = "28778" },
new Value { StringValue = "Gary" }
};
table = new Table
{
Headers =
{
new FieldId { Name = "Employee ID" },
new FieldId { Name = "Employee Name" }
},
Rows =
{
new Table.Types.Row { Values = { row1 } },
new Table.Types.Row { Values = { row2 } }
}
};
}
// Construct the content item by providing the table.
var contentItem = new ContentItem { Table = table };
// Specify how to decrypt the previously de-identified information.
var cryptoReplaceFfxFpeConfig = new CryptoReplaceFfxFpeConfig
{
CryptoKey = new CryptoKey
{
KmsWrapped = new KmsWrappedCryptoKey
{
CryptoKeyName = keyName,
WrappedKey = ByteString.FromBase64(wrappedKey)
}
},
CommonAlphabet = alphabet
};
// Specify the field to be decrypted.
var fields = new FieldId[] { new FieldId { Name = "Employee ID" } };
// Construct the re-identify config and specify the transformation.
var reidentifyConfig = new DeidentifyConfig
{
RecordTransformations = new RecordTransformations
{
FieldTransformations =
{
new FieldTransformation
{
PrimitiveTransformation = new PrimitiveTransformation
{
CryptoReplaceFfxFpeConfig = cryptoReplaceFfxFpeConfig,
},
Fields = { fields }
}
}
}
};
// Construct the request.
var request = new ReidentifyContentRequest
{
Parent = new LocationName(projectId, "global").ToString(),
Item = contentItem,
ReidentifyConfig = reidentifyConfig
};
// Call the API.
ReidentifyContentResponse response = dlp.ReidentifyContent(request);
// Inspect the response.
Console.WriteLine($"Table after re-identification: {response.Item.Table}");
return response.Item.Table;
}
}
// [END dlp_reidentify_table_fpe]