To see how it is done, the iText source is a good starting point, cause everything is in there. In general, I can tell you that you probably will not find usable source code you can just incorporate into you project. Signing PDF documents is a tough task (my company is doing this in the windows world in Pascal).
it would be great any suggestion or more sample codes to understand the process. If somebody has used the certificate services provided by Apple.
Other suggestions have told me to check Adobe documentation, but haven't found yet a C api to sign documents using certificates. Also I have been checking the CryptoExercise sample code, but I am not 100% sure if this is what I am looking for. which I could use to sign the pdf as an instance os CFData I guess. I think this is supposed to support the X.509 format. I have been checking the Apple docs, and I found this: And if not, what would be the process to achieve this using Quartz abilities to manage pdf documents? That's why I would like to know if there is something similar for iOS?. I have seen that digital sign can be achieved using libraries like iText for Java or iTextSharp for C#.
#SIGN PDF DOCUMENT ON IPHONE VERIFICATION#
I don't yet have a clear idea of the process involved in signing documents, what I know until now is that I will be signing my pdf using a private key file provided to me, and then the verification will be done using the public key version of the same file. Recently I was assigned an iOS project, where I need to digitally sign a pdf document using a key that the application will download from a server.
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