RSAPKCS1SignatureDeformatter Kelas

Definisi

Ruang nama:

System.Security.Cryptography

Rakitan:

System.Security.Cryptography.dll

Sumber:

RSAPKCS1SignatureDeformatter.cs

Memverifikasi RSA tanda tangan PKCS #1 versi 1.5.

public ref class RSAPKCS1SignatureDeformatter : System::Security::Cryptography::AsymmetricSignatureDeformatter

[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public class RSAPKCS1SignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter

[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type RSAPKCS1SignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter

Public Class RSAPKCS1SignatureDeformatter
Inherits AsymmetricSignatureDeformatter

Warisan

Object

AsymmetricSignatureDeformatter

RSAPKCS1SignatureDeformatter

Atribut

UnsupportedOSPlatformAttribute

Contoh

Contoh berikut menunjukkan cara menggunakan VerifySignature metode untuk memverifikasi tanda tangan.

using System;
using System.Security.Cryptography;

class RSASample
{

    static void Main()
    {
        try
        {
            //Create a new instance of RSA.
            using (RSA rsa = RSA.Create())
            {
                //The hash to sign.
                byte[] hash;
                using (SHA256 sha256 = SHA256.Create())
                {
                    byte[] data = new byte[] { 59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135 };
                    hash = sha256.ComputeHash(data);
                }

                //Create an RSASignatureFormatter object and pass it the 
                //RSA instance to transfer the key information.
                RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(rsa);

                //Set the hash algorithm to SHA256.
                RSAFormatter.SetHashAlgorithm("SHA256");

                //Create a signature for HashValue and return it.
                byte[] signedHash = RSAFormatter.CreateSignature(hash);
                //Create an RSAPKCS1SignatureDeformatter object and pass it the  
                //RSA instance to transfer the key information.
                RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(rsa);
                RSADeformatter.SetHashAlgorithm("SHA256");
                //Verify the hash and display the results to the console. 
                if (RSADeformatter.VerifySignature(hash, signedHash))
                {
                    Console.WriteLine("The signature was verified.");
                }
                else
                {
                    Console.WriteLine("The signature was not verified.");
                }
            }
        }
        catch (CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }
}

Imports System.Security.Cryptography

Friend Class RSASample

    Shared Sub Main()
        Try
            'Create a new instance of RSA.
            Using rsa As RSA = RSA.Create()
                'The hash to sign.
                Dim hash() As Byte
                Using sha256 As SHA256 = SHA256.Create()
                    Dim data() As Byte = { 59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135 }
                    hash = sha256.ComputeHash(data)
                End Using

                'Create an RSASignatureFormatter object and pass it the 
                'RSA instance to transfer the key information.
                Dim RSAFormatter As New RSAPKCS1SignatureFormatter(rsa)

                'Set the hash algorithm to SHA256.
                RSAFormatter.SetHashAlgorithm("SHA256")

                'Create a signature for HashValue and return it.
                Dim signedHash() As Byte = RSAFormatter.CreateSignature(hash)
                'Create an RSAPKCS1SignatureDeformatter object and pass it the  
                'RSA instance to transfer the key information.
                Dim RSADeformatter As New RSAPKCS1SignatureDeformatter(rsa)
                RSADeformatter.SetHashAlgorithm("SHA256")
                'Verify the hash and display the results to the console. 
                If RSADeformatter.VerifySignature(hash, signedHash) Then
                    Console.WriteLine("The signature was verified.")
                Else
                    Console.WriteLine("The signature was not verified.")
                End If
            End Using

        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub

End Class

Keterangan

Kelas ini digunakan untuk memverifikasi tanda tangan digital yang dibuat dengan RSA algoritma.

Gunakan RSAPKCS1SignatureFormatter untuk membuat tanda tangan digital dengan RSA algoritma.

Konstruktor

RSAPKCS1SignatureDeformatter()	Menginisialisasi instans baru kelas RSAPKCS1SignatureDeformatter.
RSAPKCS1SignatureDeformatter(AsymmetricAlgorithm)	Menginisialisasi instans RSAPKCS1SignatureDeformatter baru kelas dengan kunci yang ditentukan.

Metode

Equals(Object)	Menentukan apakah objek yang ditentukan sama dengan objek saat ini. (Diperoleh dari Object)
GetHashCode()	Berfungsi sebagai fungsi hash default. (Diperoleh dari Object)
GetType()	Mendapatkan dari instans Type saat ini. (Diperoleh dari Object)
MemberwiseClone()	Membuat salinan dangkal dari saat ini Object. (Diperoleh dari Object)
SetHashAlgorithm(String)	Mengatur algoritma hash yang akan digunakan untuk memverifikasi tanda tangan.
SetKey(AsymmetricAlgorithm)	Mengatur kunci publik yang akan digunakan untuk memverifikasi tanda tangan.
ToString()	Mengembalikan string yang mewakili objek saat ini. (Diperoleh dari Object)
VerifySignature(Byte[], Byte[])	Memverifikasi RSA tanda tangan PKCS#1 untuk data yang ditentukan.
VerifySignature(HashAlgorithm, Byte[])	Memverifikasi tanda tangan dari nilai hash yang ditentukan. (Diperoleh dari AsymmetricSignatureDeformatter)

Lihat juga

• Layanan Kriptografi