SP800108HmacCounterKdf.DeriveKey Method

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Overloads

DeriveKey(Byte[], Byte[], Int32)	Derives a key of a specified length.
DeriveKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)	Derives a key of a specified length.
DeriveKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>)	Fills a buffer with a derived key.
DeriveKey(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Int32)	Derives a key of a specified length.
DeriveKey(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Span<Byte>)	Fills a buffer with a derived key.
DeriveKey(String, String, Int32)	Derives a key of a specified length.

DeriveKey(Byte[], Byte[], Int32)

Source:

SP800108HmacCounterKdf.cs

Derives a key of a specified length.

public:
 cli::array <System::Byte> ^ DeriveKey(cli::array <System::Byte> ^ label, cli::array <System::Byte> ^ context, int derivedKeyLengthInBytes);

public byte[] DeriveKey (byte[] label, byte[] context, int derivedKeyLengthInBytes);

member this.DeriveKey : byte[] * byte[] * int -> byte[]

Public Function DeriveKey (label As Byte(), context As Byte(), derivedKeyLengthInBytes As Integer) As Byte()

Parameters

label

Byte[]

The label that identifies the purpose for the derived key.

context

Byte[]

The context containing information related to the derived key.

derivedKeyLengthInBytes

Int32

The length of the derived key, in bytes.

Returns

Byte[]

An array containing the derived key.

Exceptions

ArgumentNullException

label is null.

-or-

context is null.

ArgumentOutOfRangeException

derivedKeyLengthInBytes is negative or larger than the maximum number of bytes that can be derived.

DeriveKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Int32)

Source:

SP800108HmacCounterKdf.cs

Derives a key of a specified length.

public:
 cli::array <System::Byte> ^ DeriveKey(ReadOnlySpan<System::Byte> label, ReadOnlySpan<System::Byte> context, int derivedKeyLengthInBytes);

public byte[] DeriveKey (ReadOnlySpan<byte> label, ReadOnlySpan<byte> context, int derivedKeyLengthInBytes);

member this.DeriveKey : ReadOnlySpan<byte> * ReadOnlySpan<byte> * int -> byte[]

Public Function DeriveKey (label As ReadOnlySpan(Of Byte), context As ReadOnlySpan(Of Byte), derivedKeyLengthInBytes As Integer) As Byte()

Parameters

label

ReadOnlySpan<Byte>

The label that identifies the purpose for the derived key.

context

ReadOnlySpan<Byte>

The context containing information related to the derived key.

derivedKeyLengthInBytes

Int32

The length of the derived key, in bytes.

Returns

Byte[]

An array containing the derived key.

Exceptions

ArgumentOutOfRangeException

derivedKeyLengthInBytes is negative or larger than the maximum number of bytes that can be derived.

DeriveKey(ReadOnlySpan<Byte>, ReadOnlySpan<Byte>, Span<Byte>)

Source:

SP800108HmacCounterKdf.cs

Fills a buffer with a derived key.

public:
 void DeriveKey(ReadOnlySpan<System::Byte> label, ReadOnlySpan<System::Byte> context, Span<System::Byte> destination);

public void DeriveKey (ReadOnlySpan<byte> label, ReadOnlySpan<byte> context, Span<byte> destination);

member this.DeriveKey : ReadOnlySpan<byte> * ReadOnlySpan<byte> * Span<byte> -> unit

Public Sub DeriveKey (label As ReadOnlySpan(Of Byte), context As ReadOnlySpan(Of Byte), destination As Span(Of Byte))

Parameters

label

ReadOnlySpan<Byte>

The label that identifies the purpose for the derived key.

context

ReadOnlySpan<Byte>

The context containing information related to the derived key.

destination

Span<Byte>

The buffer which will receive the derived key.

Exceptions

ArgumentNullException

label is null.

-or-

context is null.

ArgumentOutOfRangeException

destination is larger than the maximum number of bytes that can be derived.

DeriveKey(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Int32)

Source:

SP800108HmacCounterKdf.cs

Derives a key of a specified length.

public:
 cli::array <System::Byte> ^ DeriveKey(ReadOnlySpan<char> label, ReadOnlySpan<char> context, int derivedKeyLengthInBytes);

public byte[] DeriveKey (ReadOnlySpan<char> label, ReadOnlySpan<char> context, int derivedKeyLengthInBytes);

member this.DeriveKey : ReadOnlySpan<char> * ReadOnlySpan<char> * int -> byte[]

Public Function DeriveKey (label As ReadOnlySpan(Of Char), context As ReadOnlySpan(Of Char), derivedKeyLengthInBytes As Integer) As Byte()

Parameters

label

ReadOnlySpan<Char>

The label that identifies the purpose for the derived key.

context

ReadOnlySpan<Char>

The context containing information related to the derived key.

derivedKeyLengthInBytes

Int32

The length of the derived key, in bytes.

Returns

Byte[]

An array containing the derived key.

Exceptions

ArgumentOutOfRangeException

derivedKeyLengthInBytes is negative or larger than the maximum number of bytes that can be derived.

EncoderFallbackException

label or context contains text that cannot be converted to UTF-8.

Remarks

label and context will be converted to bytes using the UTF-8 encoding. for other encodings, perform the conversion using the desired encoding and use an overload which accepts the label and context as a sequence of bytes.

DeriveKey(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Span<Byte>)

Source:

SP800108HmacCounterKdf.cs

Fills a buffer with a derived key.

public:
 void DeriveKey(ReadOnlySpan<char> label, ReadOnlySpan<char> context, Span<System::Byte> destination);

public void DeriveKey (ReadOnlySpan<char> label, ReadOnlySpan<char> context, Span<byte> destination);

member this.DeriveKey : ReadOnlySpan<char> * ReadOnlySpan<char> * Span<byte> -> unit

Public Sub DeriveKey (label As ReadOnlySpan(Of Char), context As ReadOnlySpan(Of Char), destination As Span(Of Byte))

Parameters

label

ReadOnlySpan<Char>

The label that identifies the purpose for the derived key.

context

ReadOnlySpan<Char>

The context containing information related to the derived key.

destination

Span<Byte>

The buffer which will receive the derived key.

Exceptions

ArgumentOutOfRangeException

destination is larger than the maximum number of bytes that can be derived.

EncoderFallbackException

label or context contains text that cannot be converted to UTF-8.

Remarks

label and context will be converted to bytes using the UTF-8 encoding. for other encodings, perform the conversion using the desired encoding and use an overload which accepts the label and context as a sequence of bytes.

DeriveKey(String, String, Int32)

Source:

SP800108HmacCounterKdf.cs

Derives a key of a specified length.

public:
 cli::array <System::Byte> ^ DeriveKey(System::String ^ label, System::String ^ context, int derivedKeyLengthInBytes);

public byte[] DeriveKey (string label, string context, int derivedKeyLengthInBytes);

member this.DeriveKey : string * string * int -> byte[]

Public Function DeriveKey (label As String, context As String, derivedKeyLengthInBytes As Integer) As Byte()

Parameters

label

String

The label that identifies the purpose for the derived key.

context

String

The context containing information related to the derived key.

derivedKeyLengthInBytes

Int32

The length of the derived key, in bytes.

Returns

Byte[]

An array containing the derived key.

Exceptions

ArgumentNullException

label is null.

-or-

context is null.

ArgumentOutOfRangeException

derivedKeyLengthInBytes is negative or larger than the maximum number of bytes that can be derived.

EncoderFallbackException

label or context contains text that cannot be converted to UTF-8.

Remarks

label and context will be converted to bytes using the UTF-8 encoding. for other encodings, perform the conversion using the desired encoding and use an overload which accepts the label and context as a sequence of bytes.