115 lines
5.0 KiB
VB.net
115 lines
5.0 KiB
VB.net
#Region "Microsoft.VisualBasic::a70d7ae3b720d9faaf1624a12531f761, Microsoft.VisualBasic.Core\Extensions\Security\AES.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Class AES
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: Decrypt, DecryptString, Encrypt, EncryptData
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'
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'
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' /********************************************************************************/
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#End Region
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Namespace SecurityString
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Public Class AES : Inherits SecurityStringModel
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Sub New(pass As String)
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Me.strPassphrase = pass
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End Sub
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Public Overrides Function Decrypt(input() As Byte) As Byte()
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Dim AES As New System.Security.Cryptography.RijndaelManaged
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Dim Hash_AES As New System.Security.Cryptography.MD5CryptoServiceProvider
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Dim hash(31) As Byte
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Dim temp As Byte() = Hash_AES.ComputeHash(System.Text.ASCIIEncoding.ASCII.GetBytes(strPassphrase))
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Array.Copy(temp, 0, hash, 0, 16)
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Array.Copy(temp, 0, hash, 15, 16)
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AES.Key = hash
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AES.Mode = Security.Cryptography.CipherMode.ECB
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Dim DESDecrypter As System.Security.Cryptography.ICryptoTransform = AES.CreateDecryptor
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Dim Buffer As Byte() = input
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Buffer = DESDecrypter.TransformFinalBlock(Buffer, 0, Buffer.Length)
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Return Buffer
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End Function
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Public Overrides Function DecryptString(text As String) As String
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Dim AES As New System.Security.Cryptography.RijndaelManaged
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Dim Hash_AES As New System.Security.Cryptography.MD5CryptoServiceProvider
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Dim decrypted As String = ""
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Dim hash(31) As Byte
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Dim temp As Byte() = Hash_AES.ComputeHash(System.Text.ASCIIEncoding.ASCII.GetBytes(strPassphrase))
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Array.Copy(temp, 0, hash, 0, 16)
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Array.Copy(temp, 0, hash, 15, 16)
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AES.Key = hash
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AES.Mode = Security.Cryptography.CipherMode.ECB
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Dim DESDecrypter As System.Security.Cryptography.ICryptoTransform = AES.CreateDecryptor
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Dim Buffer As Byte() = Convert.FromBase64String(text)
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decrypted = System.Text.ASCIIEncoding.ASCII.GetString(DESDecrypter.TransformFinalBlock(Buffer, 0, Buffer.Length))
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Return decrypted
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End Function
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Public Overrides Function Encrypt(input() As Byte) As Byte()
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Dim AES As New System.Security.Cryptography.RijndaelManaged
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Dim Hash_AES As New System.Security.Cryptography.MD5CryptoServiceProvider
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Dim hash(31) As Byte
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Dim temp As Byte() = Hash_AES.ComputeHash(System.Text.ASCIIEncoding.ASCII.GetBytes(strPassphrase))
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Array.Copy(temp, 0, hash, 0, 16)
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Array.Copy(temp, 0, hash, 15, 16)
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AES.Key = hash
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AES.Mode = Security.Cryptography.CipherMode.ECB
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Dim DESEncrypter As System.Security.Cryptography.ICryptoTransform = AES.CreateEncryptor
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Dim Buffer As Byte() = input
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Buffer = DESEncrypter.TransformFinalBlock(Buffer, 0, Buffer.Length)
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Return Buffer
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End Function
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Public Overrides Function EncryptData(text As String) As String
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Dim AES As New System.Security.Cryptography.RijndaelManaged
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Dim Hash_AES As New System.Security.Cryptography.MD5CryptoServiceProvider
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Dim encrypted As String = ""
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Dim hash(31) As Byte
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Dim temp As Byte() = Hash_AES.ComputeHash(System.Text.ASCIIEncoding.ASCII.GetBytes(strPassphrase))
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Array.Copy(temp, 0, hash, 0, 16)
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Array.Copy(temp, 0, hash, 15, 16)
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AES.Key = hash
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AES.Mode = Security.Cryptography.CipherMode.ECB
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Dim DESEncrypter As System.Security.Cryptography.ICryptoTransform = AES.CreateEncryptor
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Dim Buffer As Byte() = System.Text.ASCIIEncoding.ASCII.GetBytes(text)
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encrypted = Convert.ToBase64String(DESEncrypter.TransformFinalBlock(Buffer, 0, Buffer.Length))
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Return encrypted
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End Function
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End Class
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End Namespace
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