Freeware Listing: Digital Signature

With PDF Digital Signature you can digital sign a PDF document with PKCS#12 certificates and modify its meta data.

The application supports multiple signatures. All you must do is select the file you want to sign and add the information you desire.


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  • Platform: Win7 x64, Windows 7, WinOther, WinVista

Use 602XML Form Filler to fill XSL-FO based XML forms offline, save forms for later completion, and add an X.509 digital signature for authorization. XML data can be delivered by e-mail, HTTP, HTTPS, SOAP or embedded in the XML form. Includes FREE business forms. Supports simple, one-click form export to Adobe PDF. 602XML Filler is part of the 602XML Form solution provided by Software602. This solution provides the next generation of data exchange. With the new version you can easily attach any file to a form for simplified integration with existing processes and systems. Give your paper-based form some interactivity using dynamic form elements.

  • Platform: Win2000, Windows Server, WinOther

SB-SHA1 Checksum Calculator is a tool to calculate and compare the SHA1 checksum of files. The SHA1 is a 160-bit hash function which resembles the earlier MD5 algorithm. This was designed by the National Security Agency (NSA) to be part of the Digital Signature Algorithm. Features Calculate SHA1 checksum of a file. Compare SHA1 checksum of two files. Copy SHA1 hash to Windows clipboard. Compare value from the clipboard with SHA1 checksum of a file. It is free..

  • Platform: Win2000, Win7 x32, Win7 x64, Windows Server, WinOther, WinVista, WinVista x64

This project will create digital signature and encrypted digital certificates which can later be used for authenticating your files. It works for all file formats including .pdf, .jpg, . mp3, .mpg and many more
Digital signature implementation License - GNU General Public License (GPL).

  • Platform: WinOther

Do you want to integrate Digital Certificates in your application? This application provides a task oriented API which makes it easy for you to do so. Read the users manual for more information.In the first cut we using MFC/C++ and creating an OCX.
Digital Signature and Encryption Tool License - GNU General Public License (GPL).

  • Publisher: Dset
  • Date:
  • Platform: WinOther

PDF files are used by millions of computer users every day. While PDF readers remain the most widely used apps for dealing with those files, some users also need PDF editors and converters. As it is, a PDF converter app is required for adding digital signatures, PDF encryption and time stamps on digital documents. These apps are largely targeted at business users. Ascertia’s PDF Sign&Seal is one such instance. It lacks some editing tools and extensive output customizations offered by popular PDF editors but offers good PDF conversion options.

The software runs on PCs equipped with Windows XP and later versions and supports both 64 and 32 bit versions.

  • Platform: Win2000, Windows 7, WinOther, WinServer, WinVista

SignMyImage is a small and easy to use application that allows you to apply a digital signature onto your pictures. The sign is added directly to the image data and it doesn't use EXIF or stream file properties. The sign is invisible and is still detectable after jpeg compression, scaling and cropping or for example PrintScreen & Paste.

SignMyImage employs an image spider which crawls the Internet and looks for signed images and if it finds your signed image, it will let you know.

The application can sign BMP, PNG, JPG, TIF images and detect signature from images and PDF files as well.

  • Platform: Win2000, Win7 x64, Windows 7, WinOther, WinServer, WinVista

XolidoSign allows you to perform advanced digital signature (CadES) and/or timestamp for all the documents you need (PDF native Signature, Word, Images, Excel datasheet, Databases, Videos ). XolidoSign performs a verification of your received signed documents. With an an automatic process of pairings and associations between files, electronic signatures and time stamps, returning validity status of signatures, time stamps and files. On your computer. Easy, Fast and for all users. XolidoSign supports all formats: PDF, Excel, Word, PowerPoint, txt files, html, php, data base, images, vector draw, 3D files, videos, maps, music… Now available in more languages: English, Catalan, Basque, French, German, Italian, Portuguese and Spanish.

  • Platform: Win2000, WinXP, Win7 x32, Win7 x64, Windows 8, Windows 10, WinServer, WinOther, WinVista, WinVista x64

DigiSigner is a tiny PDF viewer tool to digitally sign your PDF documents and verify signatures.

DigiSigner main features:

- DigiSigner is a normal PDF viewer so you can always open and inspect the document you are going to sign.

- DigiSigner produces completely Adobe Reader compliant digital signatures, which can be verified in Adobe Reader and vice versa.

- You can easily place the signature wherever you want in the document using your mouse.

- You can create invisible and professionally looking visible signatures with DigiSigner.

- DigiSigner shows and verifies existing digital signatures in the document.

  • Platform: Win2000, Win7 x32, Win7 x64, WinOther, WinVista, WinVista x64

This project is devoted to provide a simple software layer for digital signature, when an hardware cryptographic token is required. The default implementation tries to comply as strictly as possible with the italian law digital signature directives..

  • Platform: Linux, Mac OS X, WinOther

A software written in java to compute the digital signature on documents and verify them, using a smart card or a token file in p12 format.

  • Platform: WinOther

OODDSS is a system that provide digital signature and verification for ELF executables and libraries in GNU/Linuxsystems.The goal is to be fast, transparent for the user and simple to administer and distribute the signed packages..

  • Platform: Linux

OpenSignature is an open source project for the digital signature of documents. It works with all cards supported by OpenSC and focuses on adding support for cards from accredited Italian CAs. The goal of the project is to provide a first single product.

  • Platform: Linux, Unix, WinOther

This project currently provides a set of modules that enable the use of smartcard based authentication & digital signature security services. It also interact with the OpenCA project to provide a smartcard-based PKI..

  • Platform: Linux, Unix

LockBox 3 is a Delphi library for cryptography. Currently supported Delphi 7, 2005, 2007, 2009 and 2010. It provides support for AES, DES, 3DES, Blowfish, Twofish, SHA, MD5, a variety of chaining modes, RSA digital signature and verific....

  • Platform: WinOther

This library exposes security functionality to the programmer, such as random number generation, hashing, salted hashing, message authentication code, symmetric encryption, asymmetric encryption, hybrid encryption, digital signature and in-memory protection. The library is accompanied by a sophisticated reference implementation, that demonstrates how to make use of the CryptoLibrary.
CryptoLibraryRefImpl License - GNU General Public License version 3.0 (GPLv3).

  • Platform: WinOther
  • egrsa
  • License: Freeware
  • Rating

compare time of process between rsa and elgamal algorithm used to encryption and digital signature.
egrsa License - GNU General Public License version 3.0 (GPLv3).

  • Publisher: Egrsa
  • Date:
  • Size: 324 KB
  • Platform: Linux, WinOther

A cross platform implementation of ECDSA (elliptic curve digital signature algorithm) interface to the aSuretee Token.
ECDSA Signing interface License - Other License.

  • Platform: WinOther

Development of software in support of the Portable Network Graphics (PNG) Digital Signature (dSIG) chunk.
PNG dSIG chunk support License - zlib/libpng License.

  • Platform: WinOther

National Ukrainian standard of digital signature based on elliptic curves (DSTU 4145-2002).
Ukrainian standard DSTU 4145-2002 License - GNU Library or Lesser General Public License (LGPL).

  • Platform: WinOther

Digital Signature: Freeware | All

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