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Sign inSymmetricAlgorithm.TryDecryptCfb Method
Definition
Important
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Attempts to decrypt data into the specified buffer, using CFB mode with the specified padding mode and feedback size.
public bool TryDecryptCfb(ReadOnlySpan<byte> ciphertext, ReadOnlySpan<byte> iv, Span<byte> destination, out int bytesWritten, System.Security.Cryptography.PaddingMode paddingMode = System.Security.Cryptography.PaddingMode.None, int feedbackSizeInBits = 8);member this.TryDecryptCfb : ReadOnlySpan<byte> * ReadOnlySpan<byte> * Span<byte> * int * System.Security.Cryptography.PaddingMode * int -> boolPublic Function TryDecryptCfb (ciphertext As ReadOnlySpan(Of Byte), iv As ReadOnlySpan(Of Byte), destination As Span(Of Byte), ByRef bytesWritten As Integer, Optional paddingMode As PaddingMode = System.Security.Cryptography.PaddingMode.None, Optional feedbackSizeInBits As Integer = 8) As Boolean- ciphertext
- ReadOnlySpan<Byte>
The data to decrypt.
- iv
- ReadOnlySpan<Byte>
The initialization vector.
- bytesWritten
- Int32
When this method returns, contains the total number of bytes written to destination.
- paddingMode
- PaddingMode
The padding mode used to produce the ciphertext and remove during decryption.
- feedbackSizeInBits
- Int32
The feedback size, specified in bits.
true if destination was large enough to receive the decrypted data; otherwise, false.
paddingMode is not a valid padding mode.
-or-
feedbackSizeInBits is not positive or represent a whole number of bytes.
iv is the incorrect length. Callers are expected to pass an initialization vector that is exactly BlockSize in length, converted to bytes (BlockSize / 8).
The ciphertext could not be decrypted successfully.
-or-
feedbackSizeInBits is not valid for the algorithm.
This method's behavior is defined by TryDecryptCfbCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>, PaddingMode, Int32, Int32).
Applies to
| Product | Versions |
|---|---|
| .NET | 6, 7, 8, 9, 10 |