Open Source C# Electronic Signature Software

Free software for electronic signature in PDF documents

Print documents as PDF files and launch application that enable annotations and biometric signatures using a tablet pc pen or desktop mouse. Save PDF file with encryption and digital signature

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Online Signature Verification technology requires primarily a digitizing tablet and a special pen connected to the USB port of a computer. An individual can sign on the digitizing tablet using the special pen regardless of his signature size and position. The signature is characterized as pen-strokes consisting x-y coordinates and pressure with the data being stored in a signature database. Dynamic time warping (DTW) and quadratic discriminant analysis (QDA) is used to get results where the system accepts 2% of forged signatures and rejects 5% of true signatures

National Ukrainian standard of digital signature based on elliptic curves (DSTU 4145-2002).

WMSigner is a module which is used to generate the digital signature, required for authentication with the WebMoney Transfer API.