VeryPDF PDF Security component offers comprehensive functionality to encrypt your PDF files.
EncryptPDF Command Line and EncryptPDF SDK products,
http://www.verypdf.com/app/encrypt-pdf/try-and-buy.html
Protect PDF files by PDF Toolbox Command Line software,
http://www.verypdf.com/app/pdftoolbox/index.html
PDF documents used in professional circumstances contain important information that needs to be protected against unauthorized access and unintentional alteration. This is achieved by protecting PDF documents through encryption and user permission flags.
PDF Security has following functions:
- Application of compliant signatures to PDF/A documents
- Verification of signatures in a PDF document
- Simple, advanced and qualified electronic signatures
- Long-term signatures with embedded trust chain, time stamp and verification
- information on certificate validity
- Support for mass signature devices (HSM) via PKCS#11
- Author's signature (MDP)
- Listing and restoring revisions
- Invisible and visible signatures and design functions for visible signatures
- Protect PDF files against unauthorized access
- Encrypt and decrypt PDF documents with owner and user passwords
- Set document permission flags
Read
Print
Extract
Annotate, sign
Change
etc. - Set encryption filters (none, RC4, AES)
- Set encryption key length (40... 128 bit)
- Decrypt including AES V3 (256 bit)
The Digital Signature function is not included in free trial version of PDF Security component, if you wish evaluate Digital Signature function, please e feel free to let us know, we are glad to assist you asap,
However, VeryPDF PDF Editor is include a Digital Signature function, you can download and evaluate it from following web page,
http://www.verypdf.com/app/pdf-editor/index.html
