Abstract

Currently, most of the services offered on the internet are backed by the use of public key cryptography, which bases its security on modular arithmetic. The use of modular mathematics so far is safe. However, this research seeks to introduce a new approach to public key cryptography that improves execution times, reducing energy consumption. A different and promising option is the use of Hash functions, which can be exploited to make digital signatures. The protocol proposed in this work incorporates the role of a Certifying Authority (CA), which controls the keys used by the users and through the transaction log that stores allows to guarantee the non-repudiation of the information. This method is suitable for mobile network devices because of the speed and hardware requirements of the Hash functions.