We need TWO mobile APPs (android 4.1 and above, and iphone) which has to work with a hardware token which connects with the celphone through the AUDIO JACK, these apps have to digitally sign documents such as PDF and OFFICE documents with digital Certificates with X509 format, which are issued by our Certification Authority.
The X509 certificate will be stored in the hardware token, which is connected through the audio jack. Files should be talen from the phone and they have to be saved in the same location and also the option to send it by email should be given.
The android app has to be developed in JAVA and the Iphone app will be developed in objective C.
Digital certificate, java and objective C libraries and the audio jack token will be provided by us.