C# Signature:

[DllImport("advapi32.dll", SetLastError=true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool CryptGetDefaultProvider(
    UInt32 dwProvType,
    IntPtr pdwReserved,
    UInt32 dwFlags,
    StringBuilder pszProvName,
    ref IntPtr ProvName
);

VB Signature:

Declare Function CryptGetDefaultProvider Lib "advapi32.dll" (TODO) As TODO

User-Defined Types:

// Possible values for dwFlags
const UInt32 CRYPT_USER_DEFAULT = 0x00000002;
const UInt32 CRYPT_MACHINE_DEFAULT = 0x00000001;

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

StringBuilder providerName = new StringBuilder(255);
IntPtr providerNameLen = new IntPtr(255);

if (CryptGetDefaultProvider(
    PROV_RSA_FULL,
    IntPtr.Zero,
    CRYPT_USER_DEFAULT,
    providerName,
    ref providerNameLen))
{
    MessageBox.Show(String.Format("The default provider is {0}", providerName.ToString()));
}
else
{
    MessageBox.Show("Unable to get the default provider");
}

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).