sign

type CatalogData struct {
	ObjectId   uint32
	Length     int64
	RootString string
}

type InfoData struct {
	ObjectId uint32
	Length   int64
}

type RevocationFunction func(cert, issuer *x509.Certificate, i *revocation.InfoArchival) error

type SignContext struct {
	Filesize                   int64
	InputFile                  io.ReadSeeker
	OutputFile                 io.Writer
	OutputBuffer               *filebuffer.Buffer
	SignData                   SignData
	CatalogData                CatalogData
	VisualSignData             VisualSignData
	InfoData                   InfoData
	PDFReader                  *pdf.Reader
	NewXrefStart               int64
	ByteRangeStartByte         int64
	SignatureContentsStartByte int64
	ByteRangeValues            []int64
	SignatureMaxLength         uint32
	SignatureMaxLengthBase     uint32
}

type SignData struct {
	ObjectId           uint32
	Signature          SignDataSignature
	Signer             crypto.Signer
	DigestAlgorithm    crypto.Hash
	Certificate        *x509.Certificate
	CertificateChains  [][]*x509.Certificate
	TSA                TSA
	RevocationData     revocation.InfoArchival
	RevocationFunction RevocationFunction
}

type SignDataSignature struct {
	CertType   uint
	DocMDPPerm uint
	Info       SignDataSignatureInfo
}

type SignDataSignatureInfo struct {
	Name        string
	Location    string
	Reason      string
	ContactInfo string
	Date        time.Time
}

type TSA struct {
	URL      string
	Username string
	Password string
}

type VisualSignData struct {
	ObjectId uint32
	Length   int64
}