cryptography

specialist; expert

take part in

security

security; safety / (finance) security

(cryptography) code; cipher

speciality/specialty; subject of study; subject of expertise; area of interest; profession

development or exploitation of natural resources etc. / development or creation of new technology, drugs, or products / development or cultivation of talent or ability

to develop or exploit resources / to develop or create new products or fields / to cultivate talent or ability

system