RSACryptoServiceProvider.Decrypt Metodo

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

public:
 cli::array <System::Byte> ^ Decrypt(cli::array <System::Byte> ^ rgb, bool fOAEP);

public byte[] Decrypt(byte[] rgb, bool fOAEP);

[System.Obsolete("RSACryptoServiceProvider.Encrypt and RSACryptoServiceProvider.Decrypt methods that take a Boolean are obsolete. Use the overload that accepts RSAEncryptionPadding instead.", DiagnosticId="SYSLIB0064", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public byte[] Decrypt(byte[] rgb, bool fOAEP);

override this.Decrypt : byte[] * bool -> byte[]

[<System.Obsolete("RSACryptoServiceProvider.Encrypt and RSACryptoServiceProvider.Decrypt methods that take a Boolean are obsolete. Use the overload that accepts RSAEncryptionPadding instead.", DiagnosticId="SYSLIB0064", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
override this.Decrypt : byte[] * bool -> byte[]

member this.Decrypt : byte[] * bool -> byte[]

Public Function Decrypt (rgb As Byte(), fOAEP As Boolean) As Byte()

Parametri

Valori restituiti

Dati decrittografati, ovvero il testo normale originale prima della crittografia.

Attributi

ObsoleteAttribute

Eccezioni

Esempio

L'esempio di codice seguente crittografa e decrittografa i dati.

In questo esempio viene usata la ASCIIEncoding classe . Tuttavia, la UnicodeEncoding classe può essere preferibile in operazioni di dati di grandi dimensioni. Il valore crittografato può essere salvato come tipo di dati nvarchar in Microsoft SQL Server.

using System;
using System.Security.Cryptography;
using System.Text;

class RSACSPSample
{
    static void Main()
    {
        try
        {
            //Create a UnicodeEncoder to convert between byte array and string.
            ASCIIEncoding ByteConverter = new ASCIIEncoding();

            string dataString = "Data to Encrypt";

            //Create byte arrays to hold original, encrypted, and decrypted data.
            byte[] dataToEncrypt = ByteConverter.GetBytes(dataString);
            byte[] encryptedData;
            byte[] decryptedData;

            //Create a new instance of the RSACryptoServiceProvider class
            // and automatically create a new key-pair.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider();

            //Display the origianl data to the console.
            Console.WriteLine("Original Data: {0}", dataString);

            //Encrypt the byte array and specify no OAEP padding.
            //OAEP padding is only available on Microsoft Windows XP or
            //later.
            encryptedData = RSAalg.Encrypt(dataToEncrypt, false);

            //Display the encrypted data to the console.
            Console.WriteLine("Encrypted Data: {0}", ByteConverter.GetString(encryptedData));

            //Pass the data to ENCRYPT and boolean flag specifying
            //no OAEP padding.
            decryptedData = RSAalg.Decrypt(encryptedData, false);

            //Display the decrypted plaintext to the console.
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData));
        }
        catch(CryptographicException e)
        {
            //Catch this exception in case the encryption did
            //not succeed.
            Console.WriteLine(e.Message);
        }
    }
}

Imports System.Security.Cryptography
Imports System.Text

Module RSACSPExample

    Sub Main()
        Try
            'Create a UnicodeEncoder to convert between byte array and string.
            Dim ByteConverter As New ASCIIEncoding

            Dim dataString As String = "Data to Encrypt"

            'Create byte arrays to hold original, encrypted, and decrypted data.
            Dim dataToEncrypt As Byte() = ByteConverter.GetBytes(dataString)
            Dim encryptedData() As Byte
            Dim decryptedData() As Byte

            'Create a new instance of the RSACryptoServiceProvider class 
            ' and automatically create a new key-pair.
            Dim RSAalg As New RSACryptoServiceProvider

            'Display the origianl data to the console.
            Console.WriteLine("Original Data: {0}", dataString)

            'Encrypt the byte array and specify no OAEP padding.  
            'OAEP padding is only available on Microsoft Windows XP or
            'later.  
            encryptedData = RSAalg.Encrypt(dataToEncrypt, False)

            'Display the encrypted data to the console. 
            Console.WriteLine("Encrypted Data: {0}", ByteConverter.GetString(encryptedData))

            'Pass the data to ENCRYPT and boolean flag specifying 
            'no OAEP padding.
            decryptedData = RSAalg.Decrypt(encryptedData, False)

            'Display the decrypted plaintext to the console. 
            Console.WriteLine("Decrypted plaintext: {0}", ByteConverter.GetString(decryptedData))
        Catch e As CryptographicException
            'Catch this exception in case the encryption did
            'not succeed.
            Console.WriteLine(e.Message)
        End Try
    End Sub 

End Module

Commenti

Usare Encrypt per crittografare i dati per la decrittografia con questo metodo.

Vedi anche

• Decrypt(Byte[], RSAEncryptionPadding)
• Servizi di crittografia

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

Origine:

RSACryptoServiceProvider.Unix.cs

public:
 override cli::array <System::Byte> ^ Decrypt(cli::array <System::Byte> ^ data, System::Security::Cryptography::RSAEncryptionPadding ^ padding);

public override byte[] Decrypt(byte[] data, System.Security.Cryptography.RSAEncryptionPadding padding);

override this.Decrypt : byte[] * System.Security.Cryptography.RSAEncryptionPadding -> byte[]

Public Overrides Function Decrypt (data As Byte(), padding As RSAEncryptionPadding) As Byte()

Parametri

Valori restituiti

Dati decrittografati.

Eccezioni

Commenti

padding deve essere RSAEncryptionPadding.Pkcs1 o RSAEncryptionPadding.OaepSHA1.