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SetaPDF-Signer API - Introduction
Digital signatures in PDF or any other document serves two purposes: The signature guarantees the document's integrity and it allows the recipient to identify the signer of a document.
The SetaPDF-Signer API allows PHP developers to digital sign PDF documents in pure PHP.
It's simple interface allows signing documents with just a few lines of php code.
To allow different signature modules in the future such modules are not part of the main API but are seperately written in own classes. Instances of this modules simply have to be passed to the sign()-method of the main API.
Currently there are only modules for OpenSSL available which leads into the fact that only certificate- and private key-formats could be used, which are supported by OpenSSL (see here).
Usage Demo
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