Otherwise, it would imply one of the cryptographers paid, but their identity remains unknown to the other cryptographers.
en.wikipedia.org In the 1970s there were very few cryptographers, except for those in military or intelligence organizations, and little academic study of cryptography.
en.wikipedia.org If the agent used the same poem code words to send a number of messages, these words could be discovered easily by enemy cryptographers.
en.wikipedia.org To counter this problem, cryptographers proposed the notion of randomized or probabilistic encryption.
en.wikipedia.org Together, they established a scrivenery employing scriveners who acted as secretaries, writers, translators, copyists and cryptographers, dealing with correspondence, translations, copying, ciphers, essays, books, plays, entertainments and masques.
en.wikipedia.org