Decentralized digital identity is a concept that is rapidly expanding due to new technologies such as Distributed Ledger Technology(DLT) which allows the secure storage of unalterable data. The purpose of this thesis is to implement the Self-Sovereign Identity(SSI) paradigm, a standard proposed by the W3C group of decentralized digital identity, within the most popular and widely used open-source OpenSSL cryptographic library. This thesis is proposed by the LINKS Foundation Cybersecurity team that is working on a larger research project on SSI. The first part of the work was done by studying and analyzing the two major current versions of OpenSSL, obtaining working models that were implemented in software.