Abstract
This paper examines the current status in the field of securing electronic documents through cryptographic tools such as electronic signatures, electronic mark and time stamp, especially in terms of their long-term storage and authentication. The authors propose a solution that removes the limitation in the use of certificates, which are constrained by the duration of validity. This is the use of dynamic biometric signature (DBS) as a natural and easily accessible tool for one-factor authentication. In fact, this method utilizes the analysis of several factors, however, to the user the method appears only as a one-factor method. The introduction of DBS as another variant of the legislatively supported electronic signature creates a new, considerably simpler means of signing electronic documents and eliminates the major complication in existing authentication of the documents and their storage in electronic form. Dynamic signature contains biometric information that reflects the characteristics of the signing person, i.e. the habits and behaviors. These properties represent a biometric footprint, which is unique to each individual and cannot be reproduced by counterfeiters. Verification of a person using his signature is one of the most natural biometric methods, since we are accustomed to verify everything with signature. The Dynamic biometric signature technology can provide the same level of security as is in the case of electronic signatures employing certificate-based cryptographic methods.
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