DLI Implementation and Reference Guide - Datalogics

DLI Reference Guide A.161
dlpdfsignaturesetpkcs7cert (DLPDFSIGNATURE
*signature, int maxLen, int (*genPKCS7Cert)(char *))
Return Value: void
Description
Parameters
Return Value
This function sets the certificate generation callback
for DLPDFSIGNATUREs of type
dlpdfsigacropkcs7 and dlpdfsigverisign.
• DLPDFSIGNATURE *signature: signature
with which certificate will be associated
• int maxlen: number of bytes provided to
the genPKCS7Cert callback
• int (*genPKCS7Cert)(char *): callback
function, called during the
dlpdfdocwritepdf function call; see
Technical Notes below.
void
Exceptions
Header
Related Methods
Availability
dli.h
dlpdfdocwritepdf
dlpdfsignaturesetdatacallback
dlpdfsignaturesetx509cert
All DLI-supported platforms.
Technical Notes
1 For these signature types, dlpdfsigacropkcs7 and dlpdfsigverisign, the
application using DLI is required to generated a fully-formed PKCS #7 certificate
with an MD5 checksum of the PDF document, encrypted with the private key
corresponding to the public key in the certificate. The RSA public-key algorithm
with a 1024-bit key length is used.
• The genPKCS7Cert callback is called by DLI during the dlpdfdocwritepdf
function call. The callback is supplied a binary data buffer of length maxLen. The