PDFium Component Docs

PadesCryptoAvailable method

Component: TPdf · Unit: PDFium

Indicates whether the signature cryptographical backend is available on the system

Syntax

function PadesCryptoAvailable: Boolean;

Description

Returns True if the system's cryptographical APIs (e.g. Windows CryptoAPI) are successfully loaded and available for signing operations

Remarks

Use this function to check signing prerequisites before executing any signing calls (like SignPades or SignPadesWithPdfA)
On Windows platforms, this checks that crypt32.dll is present and can resolve certificate chains

Example

begin
if Pdf1.PadesCryptoAvailable then
ShowMessage('PAdES signature engine is ready');
end;

See Also

SignPades ValidatePades