GetEffectivePbkdf2Salt Method

SCrypt GetEffectivePbkdf2Salt Method

CryptSharp

The SCrypt algorithm creates a salt which it then uses as a one-iteration PBKDF2 key stream with SHA256 HMAC. This method lets you retrieve this intermediate salt.

Namespace: CryptSharp.Utility
Assembly: CryptSharp (in CryptSharp.dll) Version: 2.0.0.0

Syntax

C++

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public static byte[] GetEffectivePbkdf2Salt(
	byte[] key,
	byte[] salt,
	int cost,
	int blockSize,
	int parallel,
	Nullable<int> maxThreads
)

public static byte[] GetEffectivePbkdf2Salt(
	byte[] key,
	byte[] salt,
	int cost,
	int blockSize,
	int parallel,
	Nullable<int> maxThreads
)

Public Shared Function GetEffectivePbkdf2Salt ( _
	key As Byte(), _
	salt As Byte(), _
	cost As Integer, _
	blockSize As Integer, _
	parallel As Integer, _
	maxThreads As Nullable(Of Integer) _
) As Byte()

Public Shared Function GetEffectivePbkdf2Salt ( _
	key As Byte(), _
	salt As Byte(), _
	cost As Integer, _
	blockSize As Integer, _
	parallel As Integer, _
	maxThreads As Nullable(Of Integer) _
) As Byte()

public:
static array<unsigned char>^ GetEffectivePbkdf2Salt(
	array<unsigned char>^ key, 
	array<unsigned char>^ salt, 
	int cost, 
	int blockSize, 
	int parallel, 
	Nullable<int> maxThreads
)

public:
static array<unsigned char>^ GetEffectivePbkdf2Salt(
	array<unsigned char>^ key, 
	array<unsigned char>^ salt, 
	int cost, 
	int blockSize, 
	int parallel, 
	Nullable<int> maxThreads
)

static member GetEffectivePbkdf2Salt : 
        key : byte[] * 
        salt : byte[] * 
        cost : int * 
        blockSize : int * 
        parallel : int * 
        maxThreads : Nullable<int> -> byte[]

static member GetEffectivePbkdf2Salt : 
        key : byte[] * 
        salt : byte[] * 
        cost : int * 
        blockSize : int * 
        parallel : int * 
        maxThreads : Nullable<int> -> byte[]

Parameters

key: Type: System Byte
The key to derive from.

salt: Type: System Byte
The salt. A unique salt means a unique SCrypt stream, even if the original key is identical.

cost: Type: System Int32
The cost parameter, typically a fairly large number such as 262144. Memory usage and CPU time scale approximately linearly with this parameter.

blockSize: Type: System Int32
The mixing block size, typically 8. Memory usage and CPU time scale approximately linearly with this parameter.

parallel: Type: System Int32
The level of parallelism, typically 1. CPU time scales approximately linearly with this parameter.

maxThreads: Type: System Nullable Int32
The maximum number of threads to spawn to derive the key. This is limited by the parallel value. null will use as many threads as possible.

Return Value

The effective salt.