66 lines
2.7 KiB
C#
66 lines
2.7 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="SqlAes256CbcAlgorithm.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">balnee</owner>
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// <owner current="true" primary="false">krishnib</owner>
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//------------------------------------------------------------------------------
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namespace System.Data.SqlClient
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{
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using System;
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using System.Collections.Generic;
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using System.Data.SqlClient;
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using System.Diagnostics;
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using System.IO;
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using System.Runtime.CompilerServices;
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using System.Security.Cryptography;
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/// <summary>
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/// This class implements AES_256_CBC algorithm.
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/// </summary>
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internal class SqlAes256CbcAlgorithm : SqlAeadAes256CbcHmac256Algorithm
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{
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/// <summary>
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/// Algorithm Name
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/// </summary>
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internal new const string AlgorithmName = @"AES_256_CBC";
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/// <summary>
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/// Initializes a new instance of SqlAes256CbcAlgorithm algorithm with a given key and encryption type
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/// </summary>
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/// <param name="encryptionKey">
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/// Root encryption key from which three other keys will be derived
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/// </param>
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/// <param name="encryptionType">Encryption Type, accepted values are Deterministic and Randomized.
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/// For Deterministic encryption, a synthetic IV will be genenrated during encryption
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/// For Randomized encryption, a random IV will be generated during encryption.
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/// </param>
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/// <param name="algorithmVersion">
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/// Algorithm version
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/// </param>
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internal SqlAes256CbcAlgorithm(SqlAeadAes256CbcHmac256EncryptionKey encryptionKey, SqlClientEncryptionType encryptionType, byte algorithmVersion)
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:base(encryptionKey, encryptionType, algorithmVersion)
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{ }
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/// <summary>
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/// Encryption Algorithm
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/// Simply call the base class, indicating we don't need an authentication tag.
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/// </summary>
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/// <param name="plainText">Plaintext data to be encrypted</param>
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/// <returns>Returns the ciphertext corresponding to the plaintext.</returns>
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internal override byte[] EncryptData(byte[] plainText) {
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return EncryptData(plainText, hasAuthenticationTag: false);
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}
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/// <summary>
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/// Decryption Algorithm
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/// Simply call the base class, indicating we don't have an authentication tag.
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/// </summary>
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/// <param name="cipherText"></param>
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/// <returns></returns>
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internal override byte[] DecryptData(byte[] cipherText) {
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return base.DecryptData(cipherText, hasAuthenticationTag: false);
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}
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}
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}
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