What a security handler returns when the credentials open the document.
public sealed class SecurityHandlerResult
ISO 32000-2 §7.6.3: the file encryption key the handler computes, from which every string and stream key derives.
kind:method, kind:property, kind:ctor. Press Esc to clear.SecurityHandlerResult(ReadOnlySpan<Byte>, PdfAccessLevel, PdfPermissions, Int32)Initializes a new instance of the SecurityHandlerResult class.AccessGets which credential opened the document.CryptFilterKeysGets keys for named crypt filters that do not use the file encryption key, such as a public-key handler's crypt filters with their own recipients (§7.6.6, Table 27); null when every crypt filter uses the file encryption key. An empty key marks a crypt filter the credentials are not authorized for: streams that name it stay encrypted (§7.6.6).FileEncryptionKeyGets the file encryption key.PermissionsGets the permissions that apply.RawPermissionsGets the permissions word as the document states it.RevisionGets the handler's revision, for the standard security handler the R entry; otherwise null.