Class RSACryptoTransform

Implements a cryptographic transformation that encrypts data using the RSA algorithm.

Inheritance

object

Disposable

RSACryptoTransform

Implements

IDisposableEx

ICryptoTransform

IDisposable

Inherited Members

Disposable.IsDisposed

Disposable.Dispose(bool)

Disposable.OnFinalize()

Disposable.Dispose()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: TheXDS.MCART.Security.Cryptography

Assembly: MCART.Windows.dll

Syntax

public class RSACryptoTransform : Disposable, IDisposableEx, ICryptoTransform, IDisposable

Constructors

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RSACryptoTransform()

Initializes a new instance of the RSACryptoTransform class, generating a 4096‑bit RSA key.

Declaration

public RSACryptoTransform()

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RSACryptoTransform(byte[])

Initializes a new instance of the RSACryptoTransform class using the specified byte blob containing RSA configuration information.

Declaration

public RSACryptoTransform(byte[] keyBlob)

Parameters

Type	Name	Description
byte[]	keyBlob	Binary CSP blob that contains the RSA key configuration.

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RSACryptoTransform(int)

Initializes a new instance of the RSACryptoTransform class with the specified RSA key size.

Declaration

public RSACryptoTransform(int keySize)

Parameters

Type	Name	Description
int	keySize	Size of the RSA key to generate.

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RSACryptoTransform(int, CspParameters)

Initializes a new instance of the RSACryptoTransform class, specifying the key size and CspParameters for initialization.

Declaration

public RSACryptoTransform(int dwKeySize, CspParameters parameters)

Parameters

Type	Name	Description
int	dwKeySize	RSA key size to use.
CspParameters	parameters	CspParameters for the RSA provider.

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RSACryptoTransform(CspParameters)

Initializes a new instance of the RSACryptoTransform class, specifying the CspParameters to use for initialization.

Declaration

public RSACryptoTransform(CspParameters parameters)

Parameters

Type	Name	Description
CspParameters	parameters	CspParameters for the RSA provider.

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RSACryptoTransform(RSACryptoServiceProvider)

Initializes a new instance of the RSACryptoTransform class with the supplied RSACryptoServiceProvider.

Declaration

public RSACryptoTransform(RSACryptoServiceProvider rsa)

Parameters

Type	Name	Description
RSACryptoServiceProvider	rsa

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RSACryptoTransform(RSAParameters)

Initializes a new instance of the RSACryptoTransform class, specifying the RSA parameters to use for initialization.

Declaration

public RSACryptoTransform(RSAParameters parameters)

Parameters

Type	Name	Description
RSAParameters	parameters	RSA initialization parameters.

Properties

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CanReuseTransform

Indicates whether this ICryptoTransform can be reused to transform more than one block.

Declaration

public bool CanReuseTransform { get; }

Property Value

Type	Description
bool

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CanTransformMultipleBlocks

Indicates whether this ICryptoTransform can transform multiple blocks.

Declaration

public bool CanTransformMultipleBlocks { get; }

Property Value

Type	Description
bool

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InputBlockSize

Gets the input block size for the transformation.

Declaration

public int InputBlockSize { get; }

Property Value

Type	Description
int

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OutputBlockSize

Gets the output block size for the transformation.

Declaration

public int OutputBlockSize { get; }

Property Value

Type	Description
int

Methods

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GetRSACspBlob(bool)

Exports the RSA CSP blob for this RSACryptoTransform.

Declaration

public byte[] GetRSACspBlob(bool includePrivateParameters)

Parameters

Type	Name	Description
bool	includePrivateParameters	Indicates whether to include private key parameters in the exported value.

Returns

Type	Description
byte[]	The RSA CSP blob for this RSACryptoTransform.

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GetRSAParameters(bool)

Gets the RSA parameters for this RSACryptoTransform.

Declaration

public RSAParameters GetRSAParameters(bool includePrivateParameters)

Parameters

Type	Name	Description
bool	includePrivateParameters	Indicates whether to include private key parameters in the exported value.

Returns

Type	Description
RSAParameters	The RSA parameters for this RSACryptoTransform.

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OnDispose()

Releases all resources used by this object.

Declaration

protected override void OnDispose()

Overrides

Disposable.OnDispose()

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ToStream(Stream, RSACryptoServiceProvider)

Instantiates a new CryptoStream using the RSACryptoServiceProvider instance to create a new RSACryptoTransform.

Declaration

public static CryptoStream ToStream(Stream stream, RSACryptoServiceProvider rsa)

Parameters

Type	Name	Description
Stream	stream	Stream on which to write the encrypted data.
RSACryptoServiceProvider	rsa	RSACryptoServiceProvider instance to use for constructing the new RSACryptoTransform.

Returns

Type	Description
CryptoStream	A new CryptoStream with the specified destination and transformation object.

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TransformBlock(byte[], int, int, byte[], int)

Performs the transformation of a block of data.

Declaration

public int TransformBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)

Parameters

Type	Name	Description
byte[]	inputBuffer	Input data buffer.
int	inputOffset	Offset within the input buffer from which to begin reading data.
int	inputCount	Number of bytes from the input buffer to transform.
byte[]	outputBuffer	Output buffer for the transformed data.
int	outputOffset	Offset within the output buffer at which to start writing.

Returns

Type	Description
int	The number of bytes written to the output buffer.

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TransformFinalBlock(byte[], int, int)

Performs the transformation of the final block of data.

Declaration

public byte[] TransformFinalBlock(byte[] inputBuffer, int inputOffset, int inputCount)

Parameters

Type	Name	Description
byte[]	inputBuffer	Input data buffer.
int	inputOffset	Offset within the input buffer from which to begin reading.
int	inputCount	Number of bytes from the input buffer to transform.