112 lines
4.0 KiB
VB.net
112 lines
4.0 KiB
VB.net
#Region "Microsoft.VisualBasic::450aaf79d599681305fa8d5be35a3631, Microsoft.VisualBasic.Core\Extensions\Security\AES.vb"
|
||
|
||
' Author:
|
||
'
|
||
' asuka (amethyst.asuka@gcmodeller.org)
|
||
' xie (genetics@smrucc.org)
|
||
' xieguigang (xie.guigang@live.com)
|
||
'
|
||
' Copyright (c) 2018 GPL3 Licensed
|
||
'
|
||
'
|
||
' GNU GENERAL PUBLIC LICENSE (GPL3)
|
||
'
|
||
'
|
||
' This program is free software: you can redistribute it and/or modify
|
||
' it under the terms of the GNU General Public License as published by
|
||
' the Free Software Foundation, either version 3 of the License, or
|
||
' (at your option) any later version.
|
||
'
|
||
' This program is distributed in the hope that it will be useful,
|
||
' but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
' GNU General Public License for more details.
|
||
'
|
||
' You should have received a copy of the GNU General Public License
|
||
' along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
|
||
|
||
' /********************************************************************************/
|
||
|
||
' Summaries:
|
||
|
||
' Class AES
|
||
'
|
||
' Constructor: (+1 Overloads) Sub New
|
||
' Function: Decrypt, DecryptString, Encrypt, EncryptData
|
||
'
|
||
'
|
||
' /********************************************************************************/
|
||
|
||
#End Region
|
||
|
||
Imports System.Runtime.CompilerServices
|
||
Imports System.Security.Cryptography
|
||
Imports System.Text
|
||
Imports Microsoft.VisualBasic.Text
|
||
|
||
Namespace SecurityString
|
||
|
||
Public Class AES : Inherits SecurityStringModel
|
||
|
||
ReadOnly textEncoding As Encoding
|
||
|
||
Sub New(pass$, Optional encoding As Encodings = Encodings.UTF8WithoutBOM)
|
||
Me.strPassphrase = pass
|
||
Me.textEncoding = encoding.CodePage
|
||
End Sub
|
||
|
||
Public Overrides Function Decrypt(input() As Byte) As Byte()
|
||
Dim AES As New RijndaelManaged
|
||
Dim hashAES As New MD5CryptoServiceProvider
|
||
Dim hash(31) As Byte
|
||
Dim temp As Byte() = hashAES.ComputeHash(ASCIIEncoding.ASCII.GetBytes(strPassphrase))
|
||
Array.Copy(temp, 0, hash, 0, 16)
|
||
Array.Copy(temp, 0, hash, 15, 16)
|
||
AES.Key = hash
|
||
AES.Mode = CipherMode.ECB
|
||
Dim DESDecrypter As ICryptoTransform = AES.CreateDecryptor
|
||
Dim Buffer As Byte() = input
|
||
Buffer = DESDecrypter.TransformFinalBlock(Buffer, 0, Buffer.Length)
|
||
Return Buffer
|
||
End Function
|
||
|
||
''' <summary>
|
||
'''
|
||
''' </summary>
|
||
''' <param name="text">密文数据的base64字符串</param>
|
||
''' <returns></returns>
|
||
<MethodImpl(MethodImplOptions.AggressiveInlining)>
|
||
Public Overrides Function DecryptString(text As String) As String
|
||
Return textEncoding.GetString(Decrypt(Convert.FromBase64String(text)))
|
||
End Function
|
||
|
||
Public Overrides Function Encrypt(input() As Byte) As Byte()
|
||
Dim AES As New RijndaelManaged
|
||
Dim hashAES As New MD5CryptoServiceProvider
|
||
Dim hash(31) As Byte
|
||
Dim temp As Byte() = hashAES.ComputeHash(ASCIIEncoding.ASCII.GetBytes(strPassphrase))
|
||
Array.Copy(temp, 0, hash, 0, 16)
|
||
Array.Copy(temp, 0, hash, 15, 16)
|
||
AES.Key = hash
|
||
AES.Mode = CipherMode.ECB
|
||
Dim DESEncrypter As ICryptoTransform = AES.CreateEncryptor
|
||
Dim Buffer As Byte() = input
|
||
Buffer = DESEncrypter.TransformFinalBlock(Buffer, 0, Buffer.Length)
|
||
Return Buffer
|
||
End Function
|
||
|
||
''' <summary>
|
||
''' 加密明文，然后使用base64字符串输出结果
|
||
''' </summary>
|
||
''' <param name="text"></param>
|
||
''' <returns></returns>
|
||
'''
|
||
<MethodImpl(MethodImplOptions.AggressiveInlining)>
|
||
Public Overrides Function EncryptData(text As String) As String
|
||
Return Convert.ToBase64String(Encrypt(textEncoding.GetBytes(text)))
|
||
End Function
|
||
End Class
|
||
End Namespace
|