RijndaelManaged 類別
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
警告
The Rijndael and RijndaelManaged types are obsolete. Use Aes instead.
存取 Rijndael 演算法的 Managed 版本。 此類別無法獲得繼承。
public ref class RijndaelManaged sealed : System::Security::Cryptography::Rijndael[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public sealed class RijndaelManaged : System.Security.Cryptography.Rijndael[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Obsolete("The Rijndael and RijndaelManaged types are obsolete. Use Aes instead.", DiagnosticId="SYSLIB0022", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class RijndaelManaged : System.Security.Cryptography.Rijndaelpublic sealed class RijndaelManaged : System.Security.Cryptography.Rijndael[System.Runtime.InteropServices.ComVisible(true)]
public sealed class RijndaelManaged : System.Security.Cryptography.Rijndael[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type RijndaelManaged = class
inherit Rijndael[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
[<System.Obsolete("The Rijndael and RijndaelManaged types are obsolete. Use Aes instead.", DiagnosticId="SYSLIB0022", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type RijndaelManaged = class
inherit Rijndaeltype RijndaelManaged = class
inherit Rijndael[<System.Runtime.InteropServices.ComVisible(true)>]
type RijndaelManaged = class
inherit RijndaelPublic NotInheritable Class RijndaelManaged
Inherits Rijndael- 繼承
- 屬性
範例
下列範例示範如何使用 類別來加密和解密範例資料 RijndaelManaged 。
#using <System.dll>
using namespace System;
using namespace System::IO;
using namespace System::Security::Cryptography;
class RijndaelMemoryExample
{
public:
static array<Byte>^ encryptStringToBytes_AES(String^ plainText, array<Byte>^ Key, array<Byte>^ IV)
{
// Check arguments.
if (!plainText || plainText->Length <= 0)
throw gcnew ArgumentNullException("plainText");
if (!Key || Key->Length <= 0)
throw gcnew ArgumentNullException("Key");
if (!IV || IV->Length <= 0)
throw gcnew ArgumentNullException("IV");
// Declare the streams used
// to encrypt to an in memory
// array of bytes.
MemoryStream^ msEncrypt;
CryptoStream^ csEncrypt;
StreamWriter^ swEncrypt;
// Declare the RijndaelManaged object
// used to encrypt the data.
RijndaelManaged^ aesAlg;
try
{
// Create a RijndaelManaged object
// with the specified key and IV.
aesAlg = gcnew RijndaelManaged();
aesAlg->Padding = PaddingMode::PKCS7;
aesAlg->Key = Key;
aesAlg->IV = IV;
// Create an encryptor to perform the stream transform.
ICryptoTransform^ encryptor = aesAlg->CreateEncryptor(aesAlg->Key, aesAlg->IV);
// Create the streams used for encryption.
msEncrypt = gcnew MemoryStream();
csEncrypt = gcnew CryptoStream(msEncrypt, encryptor, CryptoStreamMode::Write);
swEncrypt = gcnew StreamWriter(csEncrypt);
//Write all data to the stream.
swEncrypt->Write(plainText);
swEncrypt->Flush();
csEncrypt->FlushFinalBlock();
msEncrypt->Flush();
}
finally
{
// Clean things up.
// Close the streams.
if(swEncrypt)
swEncrypt->Close();
if (csEncrypt)
csEncrypt->Close();
// Clear the RijndaelManaged object.
if (aesAlg)
aesAlg->Clear();
}
// Return the encrypted bytes from the memory stream.
return msEncrypt->ToArray();
}
static String^ decryptStringFromBytes_AES(array<Byte>^ cipherText, array<Byte>^ Key, array<Byte>^ IV)
{
// Check arguments.
if (!cipherText || cipherText->Length <= 0)
throw gcnew ArgumentNullException("cipherText");
if (!Key || Key->Length <= 0)
throw gcnew ArgumentNullException("Key");
if (!IV || IV->Length <= 0)
throw gcnew ArgumentNullException("IV");
// TDeclare the streams used
// to decrypt to an in memory
// array of bytes.
MemoryStream^ msDecrypt;
CryptoStream^ csDecrypt;
StreamReader^ srDecrypt;
// Declare the RijndaelManaged object
// used to decrypt the data.
RijndaelManaged^ aesAlg;
// Declare the string used to hold
// the decrypted text.
String^ plaintext;
try
{
// Create a RijndaelManaged object
// with the specified key and IV.
aesAlg = gcnew RijndaelManaged();
aesAlg->Padding = PaddingMode::PKCS7;
aesAlg->Key = Key;
aesAlg->IV = IV;
// Create a decryptor to perform the stream transform.
ICryptoTransform^ decryptor = aesAlg->CreateDecryptor(aesAlg->Key, aesAlg->IV);
// Create the streams used for decryption.
msDecrypt = gcnew MemoryStream(cipherText);
csDecrypt = gcnew CryptoStream(msDecrypt, decryptor, CryptoStreamMode::Read);
srDecrypt = gcnew StreamReader(csDecrypt);
// Read the decrypted bytes from the decrypting stream
// and place them in a string.
plaintext = srDecrypt->ReadToEnd();
}
finally
{
// Clean things up.
// Close the streams.
if (srDecrypt)
srDecrypt->Close();
if (csDecrypt)
csDecrypt->Close();
if (msDecrypt)
msDecrypt->Close();
// Clear the RijndaelManaged object.
if (aesAlg)
aesAlg->Clear();
}
return plaintext;
}
};
int main()
{
try
{
String^ original = "Here is some data to encrypt!";
// Create a new instance of the RijndaelManaged
// class. This generates a new key and initialization
// vector (IV).
RijndaelManaged^ myRijndael = gcnew RijndaelManaged();
// Encrypt the string to an array of bytes.
array<Byte>^ encrypted = RijndaelMemoryExample::encryptStringToBytes_AES(original, myRijndael->Key, myRijndael->IV);
// Decrypt the bytes to a string.
String^ roundtrip = RijndaelMemoryExample::decryptStringFromBytes_AES(encrypted, myRijndael->Key, myRijndael->IV);
//Display the original data and the decrypted data.
Console::WriteLine("Original: {0}", original);
Console::WriteLine("Round Trip: {0}", roundtrip);
}
catch (Exception^ e)
{
Console::WriteLine("Error: {0}", e->Message);
}
return 0;
}
using System;
using System.IO;
using System.Security.Cryptography;
namespace RijndaelManaged_Example
{
class RijndaelExample
{
public static void Main()
{
try
{
string original = "Here is some data to encrypt!";
// Create a new instance of the RijndaelManaged
// class. This generates a new key and initialization
// vector (IV).
using (RijndaelManaged myRijndael = new RijndaelManaged())
{
myRijndael.GenerateKey();
myRijndael.GenerateIV();
// Encrypt the string to an array of bytes.
byte[] encrypted = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV);
// Decrypt the bytes to a string.
string roundtrip = DecryptStringFromBytes(encrypted, myRijndael.Key, myRijndael.IV);
//Display the original data and the decrypted data.
Console.WriteLine("Original: {0}", original);
Console.WriteLine("Round Trip: {0}", roundtrip);
}
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e.Message);
}
}
static byte[] EncryptStringToBytes(string plainText, byte[] Key, byte[] IV)
{
// Check arguments.
if (plainText == null || plainText.Length <= 0)
throw new ArgumentNullException("plainText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
byte[] encrypted;
// Create an RijndaelManaged object
// with the specified key and IV.
using (RijndaelManaged rijAlg = new RijndaelManaged())
{
rijAlg.Key = Key;
rijAlg.IV = IV;
// Create an encryptor to perform the stream transform.
ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
// Return the encrypted bytes from the memory stream.
return encrypted;
}
static string DecryptStringFromBytes(byte[] cipherText, byte[] Key, byte[] IV)
{
// Check arguments.
if (cipherText == null || cipherText.Length <= 0)
throw new ArgumentNullException("cipherText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
// Declare the string used to hold
// the decrypted text.
string plaintext = null;
// Create an RijndaelManaged object
// with the specified key and IV.
using (RijndaelManaged rijAlg = new RijndaelManaged())
{
rijAlg.Key = Key;
rijAlg.IV = IV;
// Create a decryptor to perform the stream transform.
ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for decryption.
using (MemoryStream msDecrypt = new MemoryStream(cipherText))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
// Read the decrypted bytes from the decrypting stream
// and place them in a string.
plaintext = srDecrypt.ReadToEnd();
}
}
}
}
return plaintext;
}
}
}
Imports System.IO
Imports System.Security.Cryptography
Class RijndaelExample
Public Shared Sub Main()
Try
Dim original As String = "Here is some data to encrypt!"
' Create a new instance of the RijndaelManaged
' class. This generates a new key and initialization
' vector (IV).
Using myRijndael As New RijndaelManaged()
myRijndael.GenerateKey()
myRijndael.GenerateIV()
' Encrypt the string to an array of bytes.
Dim encrypted As Byte() = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV)
' Decrypt the bytes to a string.
Dim roundtrip As String = DecryptStringFromBytes(encrypted, myRijndael.Key, myRijndael.IV)
'Display the original data and the decrypted data.
Console.WriteLine("Original: {0}", original)
Console.WriteLine("Round Trip: {0}", roundtrip)
End Using
Catch e As Exception
Console.WriteLine("Error: {0}", e.Message)
End Try
End Sub
Shared Function EncryptStringToBytes(ByVal plainText As String, ByVal Key() As Byte, ByVal IV() As Byte) As Byte()
' Check arguments.
If plainText Is Nothing OrElse plainText.Length <= 0 Then
Throw New ArgumentNullException("plainText")
End If
If Key Is Nothing OrElse Key.Length <= 0 Then
Throw New ArgumentNullException("Key")
End If
If IV Is Nothing OrElse IV.Length <= 0 Then
Throw New ArgumentNullException("IV")
End If
Dim encrypted() As Byte
' Create an RijndaelManaged object
' with the specified key and IV.
Using rijAlg As New RijndaelManaged()
rijAlg.Key = Key
rijAlg.IV = IV
' Create an encryptor to perform the stream transform.
Dim encryptor As ICryptoTransform = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV)
' Create the streams used for encryption.
Using msEncrypt As New MemoryStream()
Using csEncrypt As New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)
Using swEncrypt As New StreamWriter(csEncrypt)
'Write all data to the stream.
swEncrypt.Write(plainText)
End Using
encrypted = msEncrypt.ToArray()
End Using
End Using
End Using
' Return the encrypted bytes from the memory stream.
Return encrypted
End Function 'EncryptStringToBytes
Shared Function DecryptStringFromBytes(ByVal cipherText() As Byte, ByVal Key() As Byte, ByVal IV() As Byte) As String
' Check arguments.
If cipherText Is Nothing OrElse cipherText.Length <= 0 Then
Throw New ArgumentNullException("cipherText")
End If
If Key Is Nothing OrElse Key.Length <= 0 Then
Throw New ArgumentNullException("Key")
End If
If IV Is Nothing OrElse IV.Length <= 0 Then
Throw New ArgumentNullException("IV")
End If
' Declare the string used to hold
' the decrypted text.
Dim plaintext As String = Nothing
' Create an RijndaelManaged object
' with the specified key and IV.
Using rijAlg As New RijndaelManaged
rijAlg.Key = Key
rijAlg.IV = IV
' Create a decryptor to perform the stream transform.
Dim decryptor As ICryptoTransform = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV)
' Create the streams used for decryption.
Using msDecrypt As New MemoryStream(cipherText)
Using csDecrypt As New CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)
Using srDecrypt As New StreamReader(csDecrypt)
' Read the decrypted bytes from the decrypting stream
' and place them in a string.
plaintext = srDecrypt.ReadToEnd()
End Using
End Using
End Using
End Using
Return plaintext
End Function 'DecryptStringFromBytes
End Class
備註
此演算法支援 128、192 或 256 位的金鑰長度;預設為 256 位。 在.NET Framework中，此演算法支援 128、192 或 256 位的區塊大小;預設為 128 位 (Aes 相容) 。 在 .NET Core 中，它與 AES 相同，只支援 128 位區塊大小。
重要
類別 Rijndael 是演算法的 Aes 前置任務。 您應該使用演算法， Aes 而不是 Rijndael 。 如需詳細資訊，請參閱 .NET 安全性部落格中的 Rijndael 與 AES 之間的差異 專案。
建構函式
| RijndaelManaged() |
初始化 RijndaelManaged 類別的新執行個體。 |
欄位
| BlockSizeValue |
表示密碼編譯作業的區塊大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| FeedbackSizeValue |
表示密碼編譯作業的回饋大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| IVValue |
表示對稱演算法的初始化向量 (IV)。 (繼承來源 SymmetricAlgorithm) |
| KeySizeValue |
表示對稱演算法使用之祕密金鑰的大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| KeyValue |
表示對稱演算法的祕密金鑰。 (繼承來源 SymmetricAlgorithm) |
| LegalBlockSizesValue |
指定對稱演算法所支援的區塊大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| LegalKeySizesValue |
指定對稱演算法所支援的金鑰大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| ModeValue |
表示對稱演算法中使用的密碼模式。 (繼承來源 SymmetricAlgorithm) |
| PaddingValue |
表示對稱演算法中使用的填補模式。 (繼承來源 SymmetricAlgorithm) |
屬性
| BlockSize |
取得或設定密碼編譯作業的區塊大小，以位元為單位。 |
| BlockSize |
取得或設定密碼編譯作業的區塊大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| FeedbackSize |
取得或設定加密回饋 (CFB) 和輸出回饋 (OFB) 加密模式之密碼編譯作業的回饋大小 (以位元為單位)。 |
| FeedbackSize |
取得或設定加密回饋 (CFB) 和輸出回饋 (OFB) 加密模式之密碼編譯作業的回饋大小 (以位元為單位)。 (繼承來源 SymmetricAlgorithm) |
| IV |
取得或設定對稱演算法的初始化向量 (IV)。 |
| IV |
取得或設定對稱演算法的初始化向量 (IV)。 (繼承來源 SymmetricAlgorithm) |
| Key |
取得或設定用於對稱演算法的秘密金鑰。 |
| Key |
取得或設定對稱演算法的秘密金鑰。 (繼承來源 SymmetricAlgorithm) |
| KeySize |
取得或設定用於對稱演算法之秘密金鑰的大小，以位元為單位。 |
| KeySize |
取得或設定對稱演算法使用之秘密金鑰的大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| LegalBlockSizes |
取得對稱演算法所支援的區塊大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| LegalKeySizes |
取得對稱演算法所支援的金鑰大小，以位元為單位。 |
| LegalKeySizes |
取得對稱演算法所支援的金鑰大小，以位元為單位。 (繼承來源 SymmetricAlgorithm) |
| Mode |
取得或設定對稱演算法的作業模式。 |
| Mode |
取得或設定對稱演算法的作業模式。 (繼承來源 SymmetricAlgorithm) |
| Padding |
取得或設定對稱演算法中使用的填補模式。 |
| Padding |
取得或設定對稱演算法中使用的填補模式。 (繼承來源 SymmetricAlgorithm) |
方法
明確介面實作
| IDisposable.Dispose() |
此 API 支援此產品基礎結構，但無法直接用於程式碼之中。 釋放 SymmetricAlgorithm 所使用的 Unmanaged 資源，並選擇性地釋放 Managed 資源。 (繼承來源 SymmetricAlgorithm) |