Aspose.PDF FOSS

SignatureField

SignatureField

Overview

SignatureField is a interface in Aspose.PDF FOSS for TypeScript.

Read-side view of a signature field (always available, like doc.Form).

Properties: byteRange, cmsLength, contents, coversWholeFile, isDocTimeStamp, isSigned, and 3 more.

Properties

Name	Type	Access	Description
`name`	`: string`	Read	Fully-qualified field name (`/T`).
`subFilter`	`: string`	Read	`/SubFilter` value (e.g.
`isSigned`	`: boolean`	Read	Whether the field carries a signature value (`/V` with `/Contents`).
`valueDict`	`: PdfDict`	Read	The signature value dictionary (`/Type /Sig`), empty when unsigned.
`byteRange`	`: [number, number, number, number]`	Read	`/ByteRange` `[0, a, b, c]` when signed.
`contents`	`: Uint8Array`	Read	Raw `/Contents` bytes (zero-padded placeholder) when signed.
`cmsLength`	`: number`	Read	Length of the actual CMS DER inside `contents` (excludes zero padding).
`coversWholeFile`	`: boolean`	Read	Whether `/ByteRange` spans the entire file except the `/Contents` hole.
`isDocTimeStamp`	`: boolean`	Read	Whether this is a document timestamp (`/DocTimeStamp` / `ETSI.RFC3161`) rather than an approval/certification signature.