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The following clients are available foe digital Signature and encryption:
SafeGuard Sign&Crypt for Office
The Secure Way of Signing and Encrypting your Documents
SafeGuard Sign&Crypt for Office is a generic tool for digitally signing and encrypting valuable documents. It is seamlessly integrated into Microsoft Windows Explorer, Microsoft Word and Microsoft Excel. SafeGuard Sign&Crypt for Office gives you an easy to use solution for signing and encrypting any file or document.
The Challenge
Many documents, which would normally require a signature in the paper office, are, in the electronic world, used without a signature or are printed on paper for signing and storing. Finding a practical equivalent for a signature is a major obstacle in achieving the promise of an automated paperless office.
Governments have started to resolve the legal issues associated with the use of digital signatures. A good example of this is the adoption of laws permitting the use of legally valid digital signatures in both the European Union and the United States.
Utimaco Safeware is involved in the European Electronic Signature Standardization Initiative (EESSI) and continues to adapt SafeGuard Sign&Crypt for Office to meet the goals set out by this initiative. An important design goal of this product was to make it most accessible to people familiar with Microsoft for Office and Window Explorer.
The Product
SafeGuard Sign&Crypt for Office is a software security tool for exchanging and storing sensitive information. It is a tool that helps you to achieve confidentiality, authenticity, integrity and non-repudiation of your sensitive files, yet designed to be easily accessible to the user.
One of the key challenges faced by digital signature solutions for documents is to realize that what you see on the screen is merely an instantaneous representation of the document about to be signed. Even worse, the document could contain invisible dynamic content or macros, enabling the document to self-change its own content at any time! The same risk exists when verifying a signed document: Is what you see on the screen exactly the same the signatory saw when he signed it? With the advent of laws making digital signatures legally binding, it is paramount to guarantee the unambiguous relationship between the originally signed content and what is displayed or used for processing.
As long ago as 1995, Utimaco Safeware introduced the WYSIWYS (What You See Is What You Sign) concept. The secure viewer is a component that converts and displays documents as static images and eliminates any automatic document changes by active content or macros from taking effect. The secure viewer must therefore be designed and certified to work in a way that there is no difference between what you see and what you sign. The result is analogous to a signed piece of paper: A signed static representation of the document. This allows all involved parties to verify the viewed file and use the secure viewer to display the exact content of the data in the way the originator intended.
SafeGuard Sign&Crypt for Office is a "4 in 1" solution:
• it is a an easy to use extension to the Microsoft Windows Explorer for
encrypting and signing all kind of files.
• it is conveniently integrated into Microsoft Word and Microsoft Excel
(plug-in)
• it includes a secure viewer offering WYSIWYS (What You See Is What
You Sign), preventing fraud while signing documents.
• it provides a platform independent signature verifier to allow others to
verify your signed documents.
Characteristics
SafeGuard Sign&Crypt for Office is compliant with important standards like S/MIME and uses standard X.509 v3 certificates. It makes further use of CRL, LDAP, PKCS#7, PKCS#11 and PKCS#12.
With SafeGuard Sign&Crypt for Office you can use your sensitive private keys from within software key files or from smart cards depending on the security level you need for your application. Our solution is open to many different cards and tokens.
SafeGuard Sign&Crypt for Office supports multiple key pairs (e.g. a signing key and an encryption key), multiple signatures, co-signing and hierarchical/nested signing as well as a mixture of the two. Support for time stamping and OCSP is planned in the near future.
Thanks to the integration into Microsoft Windows Explorer, Microsoft Word and Microsoft Excel, the security functionality is useable from within your office environment.
In today’s electronic environments, e.g. e-government, e-commerce, etc., it is extremely difficult to gain the necessary level of trust between the various parties. SafeGuard Sign&Crypt can enable this level of trust through smart card enabled signing and secure viewing by preventing fraud. Furthermore, anyone can verify a signed document for its authenticity and integrity using the free, platform independent verifier.
System requirements
Platform
PC system with Intel Pentium processor or compatible, CD-ROM drive required for installation on a single computer. When installed via network, alternative forms of distributing the software are possible.
Operating system
• Microsoft Windows 95
• Microsoft Windows 98
• Microsoft Windows NT version 4.0
• Microsoft Windows 2000
Security features
Authentication/key management
RSA (up to 2048 bit)
Encryption
• RSA 512-2048 bit, AES 128 bit, IDEA 128 bit
• Triple-DES 112-168 bit, DES 56 bit
• RC2 40-128 bit, Square 128 bit, Safer 64 bit
• SHA-1, RIPEMD-160, MD5
Standards
S/MIME v2 (PKCS#7), LDAP v2, CRL v2, X.509 v3, PKCS#11, PKCS#12
Tokens
• Utimaco Safeware smart cards,
• PKCS#11 smart cards/tokens,
• PKCS#12 software tokens
Certification level
ITSEC E2 high for signature functions (version 2.0)
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