PasswordDeriveBytes.CryptDeriveKey(String, String, Int32, Byte[]) Method

public:
 cli::array <System::Byte> ^ CryptDeriveKey(System::String ^ algname, System::String ^ alghashname, int keySize, cli::array <System::Byte> ^ rgbIV);

[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public byte[] CryptDeriveKey(string? algname, string? alghashname, int keySize, byte[] rgbIV);

public byte[] CryptDeriveKey(string algname, string alghashname, int keySize, byte[] rgbIV);

[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
member this.CryptDeriveKey : string * string * int * byte[] -> byte[]

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

Public Function CryptDeriveKey (algname As String, alghashname As String, keySize As Integer, rgbIV As Byte()) As Byte()

The derived key.

Attributes

SupportedOSPlatformAttribute

This code example is part of a larger example provided for the PasswordDeriveBytes class.

// Create the key and set it to the Key property
// of the TripleDESCryptoServiceProvider object.
// This example uses the SHA1 algorithm.
// Due to collision problems with SHA1, Microsoft recommends SHA256 or better.
tdes.Key = pdb.CryptDeriveKey("TripleDES", "SHA1", 192, tdes.IV);

' Create the key and set it to the Key property
' of the TripleDESCryptoServiceProvider object.
' This example uses the SHA1 algorithm.
' Due to collision problems with SHA1, Microsoft recommends SHA256 or better.
tdes.Key = pdb.CryptDeriveKey("TripleDES", "SHA1", 192, tdes.IV)

This function is a wrapper for the Crypto API function CryptDeriveKey(), and is intended to offer interoperability with applications using the Crypto API.

If the keySize parameter is set to 0 bits, the default key size for the specified algorithm is used.

• Cryptographic Services