With the rapid growth of IoT and embedded devices, the development of low power, high density, high performance SoCs has pushed the embedded memories to their limits and opened the field to the development of emerging memory technologies. The Resistive Random Access Memory (ReRAM) has emerged as a promising choice for embedded memories due to its reduced read/write latency and high CMOS integration capability. Intrinsic properties of ReRAMs make them suitable for the implementation of basic security primitives such as Physically Unclonable Functions (PUFs) and True Random Number Generators (TRNGs). The studies to be carried out during this thesis will allow the creation of robust, low cost and reliable security primitives by exploiting the inner variability of memristive technologies.