RSA.TryDecrypt Method

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Source:

RSA.cs

Attempts to decrypt the input data using the specified padding mode, writing the result into a provided buffer.

public:
 virtual bool TryDecrypt(ReadOnlySpan<System::Byte> data, Span<System::Byte> destination, System::Security::Cryptography::RSAEncryptionPadding ^ padding, [Runtime::InteropServices::Out] int % bytesWritten);

public virtual bool TryDecrypt (ReadOnlySpan<byte> data, Span<byte> destination, System.Security.Cryptography.RSAEncryptionPadding padding, out int bytesWritten);

abstract member TryDecrypt : ReadOnlySpan<byte> * Span<byte> * System.Security.Cryptography.RSAEncryptionPadding * int -> bool
override this.TryDecrypt : ReadOnlySpan<byte> * Span<byte> * System.Security.Cryptography.RSAEncryptionPadding * int -> bool

Public Overridable Function TryDecrypt (data As ReadOnlySpan(Of Byte), destination As Span(Of Byte), padding As RSAEncryptionPadding, ByRef bytesWritten As Integer) As Boolean

Parameters

data

ReadOnlySpan<Byte>

The data to decrypt.

destination

Span<Byte>

The buffer to receive the decrypted data.

padding

RSAEncryptionPadding

The padding mode.

bytesWritten

Int32

When this method returns, the total number of bytes written into destination. This parameter is treated as uninitialized.

Returns

Boolean

true if destination is long enough to receive the decrypted data; otherwise, false.

Exceptions

ArgumentNullException

padding is null.

CryptographicException

padding is unknown, or not supported by this implementation.

-or-

The length of data is not equal to the number of bytes for KeySize.

-or-

This instance represents only a public key.

-or-

The decryption operation failed.

Remarks

The default implementation of this method calls Decrypt(Byte[], RSAEncryptionPadding) and copies the result to destination. Derived types should override this method to avoid the intermediate array creation.

The RSA decryption algorithm will always produce an output smaller than the input, therefore this method will never return false when destination.Length >= data.Length.

See also

• Decrypt(Byte[], RSAEncryptionPadding)