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<< Click to Display Table of Contents >> VpeSetEncryption |
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[VPE Professional Edition and above]
Activates or deactivates encryption for exported PDF documents.
void VpeSetEncryption(
VpeHandle hDoc,
int enc_type
)
VpeHandle hDoc
Document Handle
int enc_type
possible values are:
Constant Name |
Value |
Comment |
DOC_ENCRYPT_NONE |
0 |
no encryption [default] |
DOC_ENCRYPT_STREAM |
1 |
use stream encryption (compatible to Acrobat 4 and higher) |
Default:
DOC_ENCRYPT_NONE
Remarks:
See VpeSetEncryptionKeyLength(), VpeSetUserPassword(), VpeSetOwnerPassword() and VpeSetProtection() for details.
If one and the same VPE document is exported multiple times to encrypted PDF documents, the size of the created PDF files might differ around 10 - 20 bytes. This is normal, because some encrypted characters - for example in the creation date / time string - need to be converted into a special form with additional escape characters.