cryptologist

from WordNet (r) 3.0 (2006)

cryptologist
    n 1: decoder skilled in the analysis of codes and cryptograms
         [syn: {cryptanalyst}, {cryptographer}, {cryptologist}]

from Moby Thesaurus II by Grady Ward, 1.0

37 Moby Thesaurus words for "cryptologist":
      allegorist, annotator, cicerone, clarifier, commentator, critic,
      cryptanalyst, cryptographer, decoder, definer, demonstrator,
      demythologizer, diaskeuast, dragoman, editor, emendator, emender,
      euhemerist, exegesist, exegete, exegetist, explainer, explicator,
      exponent, expositor, expounder, go-between, guide, hermeneut,
      interpreter, lexicographer, metaphrast, oneirocritic, paraphrast,
      scholiast, textual critic, translator