Class VerifiedSignature

A class that represents a verified digital signature for a PDF document.

Inheritance
System.Object
VerifiedSignature
Namespace: IronPdf.Signing.Inspection
Assembly: IronPdf.dll
Syntax
public class VerifiedSignature : Object

Properties

CertificateChain

Gets the certificate chain from signer to root, if available. The first element is the signing certificate, the last is the root or highest intermediate. Empty if the chain could not be resolved.

Declaration
public IReadOnlyList<SignerCertificateInfo> CertificateChain { get; }
Property Value
Type Description
System.Collections.Generic.IReadOnlyList<SignerCertificateInfo>

Filter

Signature filter

Declaration
public string Filter { get; }
Property Value
Type Description
System.String

SignatureName

Gets the field name of the digital signature. This is the form field name from the /T key of the signature field dictionary.

Declaration
public string SignatureName { get; }
Property Value
Type Description
System.String

SignerCertificate

Gets the X.509 certificate details of the signer, including the full Subject DN, Issuer, Serial Number, validity period, convenience identity fields, and raw DER-encoded bytes. Returns null if the signing certificate could not be extracted from the signature.

Use SubjectSerialNumber to access the personal/national ID from the SERIALNUMBER OID in the certificate's Subject DN: 

var sig = document.GetVerifiedSignatures().First();
string nationalId = sig.SignerCertificate?.SubjectSerialNumber;

Declaration
public SignerCertificateInfo SignerCertificate { get; }
Property Value
Type Description
SignerCertificateInfo

SignerName

The common name of the certificate owner who signed the signature. This value is resolved from the /V/Name field of the signature dictionary, falling back to the certificate's Subject Distinguished Name (SubjectDN) CN field. Returns null if neither source provides a value.

Declaration
public string SignerName { get; }
Property Value
Type Description
System.String

SigningContact

The contact person or email address for signing related inquiries (optional). Resolved from /V/ContactInfo, certificate email, or certificate CN as a fallback.

Declaration
public string SigningContact { get; }
Property Value
Type Description
System.String

SigningDate

The date and time of the digital signature.

Declaration
public DateTime SigningDate { get; }
Property Value
Type Description
System.DateTime

SigningLocation

The physical location the PDF was signed (optional).

Declaration
public string SigningLocation { get; }
Property Value
Type Description
System.String

SigningReason

The reason the PDF was signed (optional).

Declaration
public string SigningReason { get; }
Property Value
Type Description
System.String

Status

Gets the validation status of the signature, indicating the overall result of all verification checks performed (e.g. cryptographic integrity, certificate trust, revocation status). Possible values are Valid, ValidWithWarnings, Indeterminate, and Invalid.

Declaration
public SignatureStatus Status { get; }
Property Value
Type Description
SignatureStatus

Valid

true if the signature is valid

Declaration
public bool Valid { get; }
Property Value
Type Description
System.Boolean

Warnings

Gets the list of warning and error messages generated during signature verification.

Declaration
public List<string> Warnings { get; }
Property Value
Type Description
System.Collections.Generic.List<System.String>

Methods

ToString()

Returns a string that represents the current digital signature for a PDF document.

Declaration
public override string ToString()
Returns
Type Description
System.String

A string that represents the current digital signature for a PDF document.