PdfDocumentSecurityAlgorithm Property

Gets or sets the encryption algorithm. Defaults to AES for a new document and for a loaded document that is not encrypted. Setting a value that is incompatible with the current KeySize silently adjusts the key size to a supported one (AES + 40-bit → 128-bit; AES-GCM → 256-bit; RC4 + 256-bit → 128-bit).

public PdfEncryptionAlgorithm Algorithm { get; set; }

Public Property Algorithm As PdfEncryptionAlgorithm
	Get
	Set