The item in which the required Digital Signature is located. Set this parameter to null if the Digital Signature is located in the main Data Set.
The zero-based index of the required Digital Signature. This should be a number from 0 to GetSignaturesCount - 1.
The Digital Signatures Sequence Item that corresponds to the required Digital Signature, or a null reference (Nothing in VB) if the specified index is invalid.
For each Digital Signature in the main Data Set or in an item of a sequence of items, there should be a corresponding item under the Digital Signatures sequence (FFFA,FFFA) located in the main Data Set or in the item. This method can be used to obtain that Digital Signatures Sequence Item. Along with this method, call the GetSignaturesCount method to enumerate the Digital Signatures in the main Data Set or in an item of a sequence of items. Once the Digital Signatures Sequence Item is obtained, the following methods can be used to verify, delete, or get information about the Digital Signature:
Call the FindSignature method, to search the whole Data Set for a specific Digital Signature.
For an example, refer to GetSignaturesCount.