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RC2CryptoServiceProvider::UseSalt Property

 

Gets or sets a value that determines whether to create a key with an 11-byte-long, zero-value salt.

Namespace:   System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

public:
[ComVisibleAttribute(false)]
property bool UseSalt {
	bool get();
	void set(bool value);
}

Property Value

Type: System::Boolean

true if the key should be created with an 11-byte-long, zero-value salt; otherwise, false. The default is false.

The UseSalt property allows you to interoperate with an existing application that uses an 11-byte-long, zero-value salt. For most scenarios, you should not use a salt with an RC2CryptoServiceProvider key.

The following code example sets the UseSalt property to true, and then encrypts and decrypts a value.

using namespace System;
using namespace System::IO;
using namespace System::Text;
using namespace System::Security::Cryptography;

int main()
{
    array <Byte>^ originalBytes = 
        ASCIIEncoding::ASCII->GetBytes("Here is some data.");

    //Create a new RC2CryptoServiceProvider.
    RC2CryptoServiceProvider^ rc2Provider = 
        gcnew RC2CryptoServiceProvider();
    rc2Provider->UseSalt = true;

    rc2Provider->GenerateKey();
    rc2Provider->GenerateIV();

    //Encrypt the data.
    MemoryStream^ encryptionMemoryStream = gcnew MemoryStream();
    CryptoStream^ encryptionCryptoStream = gcnew CryptoStream(
        encryptionMemoryStream, rc2Provider->CreateEncryptor(
        rc2Provider->Key, rc2Provider->IV), CryptoStreamMode::Write);

    //Write all data to the crypto stream and flush it.
    encryptionCryptoStream->Write(originalBytes, 0, originalBytes->Length);
    encryptionCryptoStream->FlushFinalBlock();

    //Get encrypted array of bytes.
    array<Byte>^ encryptedBytes = encryptionMemoryStream->ToArray();

    //Decrypt the previously encrypted message.
    MemoryStream^ decryptionMemoryStream = 
        gcnew MemoryStream(encryptedBytes);
    CryptoStream^ decryptionCryptoStream = 
        gcnew CryptoStream(decryptionMemoryStream,
        rc2Provider->CreateDecryptor(rc2Provider->Key,rc2Provider->IV),
        CryptoStreamMode::Read);

    array<Byte>^ unencryptedBytes = 
        gcnew array<Byte>(originalBytes->Length); 

    //Read the data out of the crypto stream.
    decryptionCryptoStream->Read(unencryptedBytes, 0, 
        unencryptedBytes->Length);

    //Convert the byte array back into a string.
    String^ plainText = ASCIIEncoding::ASCII->GetString(unencryptedBytes);

    //Display the results.
    Console::WriteLine("Unencrypted text: {0}", plainText);

    Console::ReadLine();
}

.NET Framework
Available since 2.0
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