Table 232 – Additional entries specific to a signature field

Key

Type

Value

Lock

dictionary

(Optional; shall be an indirect reference; PDF 1.5) A signature field lock dictionary that specifies a set of form fields that shall be locked when this signature field is signed. Ta b l e 233 lists the entries in this dictionary.

SV

dictionary

(Optional; shall be an indirect reference; PDF 1.5) A seed value dictionary (see Table 234 ) containing information that constrains the properties of a signature that is applied to this field.