TheCodeBreakers
cryptology wherever men thrive and wherever they write. Cultural
diffusion seems a less likely explanation for its occurrence in. so many
areas, many of them distant and isolated.
The Yezidis, an obscure sect of about 25,000 people in, northern Iraq,
use a cryptic script in their holy books because they fear persecution by
their Moslem neighbors. Tibetans use a kind of cipher called "rin-spuns"
for official correspondence; it is named for its inventor Rin-c'(hhen-)
spuns(-pa), who lived in the 1300s. The Nsibidi secret society of Nigeria
keeps its pictographic script from Europeans as much as possible
because it is used chiefly to express love in rather direct imagery, and
samples appear to be at least as pornographic as they are cryptographic.
The cryptography of Thailand developed under Indian influence. An
embryonic study of the subject even appears in a grammatical work
entitled Poranavakya by Hluang Prasot Aksaraniti (Phe). One system,
annaabi.ee 
