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Sign inSymmetricAlgorithm.DecryptCfb Method
Definition
Important
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Overloads
| DecryptCfb(Byte[], Byte[], PaddingMode, Int32) |
Decrypts data using CFB mode with the specified padding mode and feedback size. |
| DecryptCfb(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, PaddingMode, Int32) |
Decrypts data using CFB mode with the specified padding mode and feedback size. |
| DecryptCfb(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>, PaddingMode, Int32) |
Decrypts data into the specified buffer, using CFB mode with the specified padding mode and feedback size. |
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
Decrypts data using CFB mode with the specified padding mode and feedback size.
C#
public byte[] DecryptCfb(byte[] ciphertext, byte[] iv, System.Security.Cryptography.PaddingMode paddingMode = System.Security.Cryptography.PaddingMode.None, int feedbackSizeInBits = 8);member this.DecryptCfb : byte[] * byte[] * System.Security.Cryptography.PaddingMode * int -> byte[]Public Function DecryptCfb (ciphertext As Byte(), iv As Byte(), Optional paddingMode As PaddingMode = System.Security.Cryptography.PaddingMode.None, Optional feedbackSizeInBits As Integer = 8) As Byte()Parameters
- ciphertext
- Byte[]
The data to decrypt.
- iv
- Byte[]
The initialization vector.
- paddingMode
- PaddingMode
The padding mode used to produce the ciphertext and remove during decryption.
- feedbackSizeInBits
- Int32
The feedback size, specified in bits.
Returns
Byte[]
The decrypted plaintext data.
Exceptions
ciphertext or iv is null.
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-
The feedback size is not valid for the algorithm.
Remarks
This method's behavior is defined by TryDecryptCfbCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>, PaddingMode, Int32, Int32).
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | 6, 7, 8, 9, 10 |
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
Decrypts data using CFB mode with the specified padding mode and feedback size.
C#
public byte[] DecryptCfb(ReadOnlySpan<byte> ciphertext, ReadOnlySpan<byte> iv, System.Security.Cryptography.PaddingMode paddingMode = System.Security.Cryptography.PaddingMode.None, int feedbackSizeInBits = 8);member this.DecryptCfb : ReadOnlySpan<byte> * ReadOnlySpan<byte> * System.Security.Cryptography.PaddingMode * int -> byte[]Public Function DecryptCfb (ciphertext As ReadOnlySpan(Of Byte), iv As ReadOnlySpan(Of Byte), Optional paddingMode As PaddingMode = System.Security.Cryptography.PaddingMode.None, Optional feedbackSizeInBits As Integer = 8) As Byte()Parameters
- ciphertext
- ReadOnlySpan<Byte>
The data to decrypt.
- iv
- ReadOnlySpan<Byte>
The initialization vector.
- paddingMode
- PaddingMode
The padding mode used to produce the ciphertext and remove during decryption.
- feedbackSizeInBits
- Int32
The feedback size, specified in bits.
Returns
Byte[]
The decrypted plaintext data.
Exceptions
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-
The feedback size is not valid for the algorithm.
Remarks
This method's behavior is defined by TryDecryptCfbCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>, PaddingMode, Int32, Int32).
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | 6, 7, 8, 9, 10 |
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
- Source:
- SymmetricAlgorithm.cs
Decrypts data into the specified buffer, using CFB mode with the specified padding mode and feedback size.
C#
public int DecryptCfb(ReadOnlySpan<byte> ciphertext, ReadOnlySpan<byte> iv, Span<byte> destination, System.Security.Cryptography.PaddingMode paddingMode = System.Security.Cryptography.PaddingMode.None, int feedbackSizeInBits = 8);member this.DecryptCfb : ReadOnlySpan<byte> * ReadOnlySpan<byte> * Span<byte> * System.Security.Cryptography.PaddingMode * int -> intPublic Function DecryptCfb (ciphertext As ReadOnlySpan(Of Byte), iv As ReadOnlySpan(Of Byte), destination As Span(Of Byte), Optional paddingMode As PaddingMode = System.Security.Cryptography.PaddingMode.None, Optional feedbackSizeInBits As Integer = 8) As IntegerParameters
- ciphertext
- ReadOnlySpan<Byte>
The data to decrypt.
- iv
- ReadOnlySpan<Byte>
The initialization vector.
- paddingMode
- PaddingMode
The padding mode used to produce the ciphertext and remove during decryption.
- feedbackSizeInBits
- Int32
The feedback size, specified in bits.
Returns
The total number of bytes written to destination.
Exceptions
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).
-or-
The buffer in destination is too small to hold the plaintext data.
The ciphertext could not be decrypted successfully.
-or-
feedbackSizeInBits is not valid for the algorithm.
Remarks
This method's behavior is defined by TryDecryptCfbCore(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>, PaddingMode, Int32, Int32).
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | 6, 7, 8, 9, 10 |