RSAPKCS1SignatureDeformatter Класс

Определение

Проверяет подпись PKCS #1 версии 1.5 RSA.Verifies an RSA PKCS #1 version 1.5 signature.

public ref class RSAPKCS1SignatureDeformatter : System::Security::Cryptography::AsymmetricSignatureDeformatter
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public class RSAPKCS1SignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
public class RSAPKCS1SignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
[System.Runtime.InteropServices.ComVisible(true)]
public class RSAPKCS1SignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type RSAPKCS1SignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
type RSAPKCS1SignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
[<System.Runtime.InteropServices.ComVisible(true)>]
type RSAPKCS1SignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
Public Class RSAPKCS1SignatureDeformatter
Inherits AsymmetricSignatureDeformatter
Наследование
RSAPKCS1SignatureDeformatter
Атрибуты

Примеры

В следующем примере демонстрируется использование VerifySignature метода для проверки подписи.The following example demonstrates how to use the VerifySignature method to verify a signature.

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

Комментарии

Этот класс используется для проверки цифровой подписи, созданной с помощью RSA алгоритма.This class is used to verify a digital signature made with the RSA algorithm.

Используется RSAPKCS1SignatureFormatter для создания цифровых подписей с помощью RSA алгоритма.Use RSAPKCS1SignatureFormatter to create digital signatures with the RSA algorithm.

Конструкторы

RSAPKCS1SignatureDeformatter()

Инициализирует новый экземпляр класса RSAPKCS1SignatureDeformatter.Initializes a new instance of the RSAPKCS1SignatureDeformatter class.

RSAPKCS1SignatureDeformatter(AsymmetricAlgorithm)

Инициализирует новый экземпляр класса RSAPKCS1SignatureDeformatter с заданным ключом.Initializes a new instance of the RSAPKCS1SignatureDeformatter class with the specified key.

Методы

Equals(Object)

Определяет, равен ли указанный объект текущему объекту.Determines whether the specified object is equal to the current object.

(Унаследовано от Object)
GetHashCode()

Служит хэш-функцией по умолчанию.Serves as the default hash function.

(Унаследовано от Object)
GetType()

Возвращает объект Type для текущего экземпляра.Gets the Type of the current instance.

(Унаследовано от Object)
MemberwiseClone()

Создает неполную копию текущего объекта Object.Creates a shallow copy of the current Object.

(Унаследовано от Object)
SetHashAlgorithm(String)

Задает хэш-алгоритм для подтверждения подписи.Sets the hash algorithm to use for verifying the signature.

SetKey(AsymmetricAlgorithm)

Задает открытый ключ, используемый для проверки подписи.Sets the public key to use for verifying the signature.

ToString()

Возвращает строку, представляющую текущий объект.Returns a string that represents the current object.

(Унаследовано от Object)
VerifySignature(Byte[], Byte[])

Проверяет подпись PKCS #1 RSA для указанных данных.Verifies the RSA PKCS#1 signature for the specified data.

VerifySignature(HashAlgorithm, Byte[])

Проверяет подпись из указанного хэш-значения.Verifies the signature from the specified hash value.

(Унаследовано от AsymmetricSignatureDeformatter)

Применяется к

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