Measuring the Security of Linguistic Steganography in Spanish based on Synonymous Paraphrasing with WSD

There are currently few public studies about the usefulness of linguistic steganography in Spanish language. This article analyzes the usefulness of synonym substitution techniques in Spanish, aiming at a first approximation to their capacity of concealment in Spanish. A synonym substitution tool based in a huge synonym dictionary, a verb inflection dictionary and a noun-adj inflection dictionary(singular/plural and masculine/feminine forms) is implemented. The quality of the substitutions is validated in the immediate context of the word by different WSD (Word Sense Disambiguation) procedures.