CreaSign SDK/Toolkit is a software component, which enables simple creation and verification of digital signature within different applications. It ensures a rock-solid, legally binding security of your e-business: guarantees authenticity and prevents repudiation or tampering with digitally signed documents. Secure digital signature, endorsed by CreaSign, is as legally binding as a handwritten signature on paper. Why CreaSign? CreaSign provides various applications with a simple way of digital signature creation and digital signature verification. It encapsulates and hides different low-level cryptographic APIs for certificate management, smart cards access, digital signature creation or verification and digital signature formatting. Digital signature ensures the essential document security features: signatory authentication, document integrity and non-repudiation. Using CreaSign an arbitrary application can securely create advanced electronic signature in a straightforward way that complies with all relevant guidelines and legislation in force: EU and UN guidelines, ETSI and EESSI technical recommendations as well as Slovene Electronic Commerce and Electronic Signature Act and recommendations of Digital Signature Working Group which operates within Chamber of Commerce and Industry of Slovenia (CCIS). CreaSign: flexible, simple, yet efficient Due to its flexible implementation, CreaSign enables a seamless, simple and user-friendly integration of digital signature into an arbitrary application and thus helps implement any form of digital-signature based e-business. Even though CreaSign is extremely simple to use, it does not limit you in usage of advanced options, like multiple signatures, sequential (counter) or parallel signatures, signature hierarchy (left, right signer), partial signatures, signature of a document batch, signing a large file, using digital certificates on smart cards etc. CreaSign object model also allows for implementation of unique and advanced digital signature scenarios.