> The only reason cryptography ban in the 90s failed was because everybody in the business world needed to have access to strong crypto for to use security reas

> The only reason cryptography ban in the 90s failed was because everybody in the business world needed to have access to strong crypto for to use security reasons. If people had to roll their own crypto, the NSA cryptanalysts would have had a really fun time because almost all of them would have been utterly broken. You wouldn’t really need to roll your own crypto to post transactions to the Bitcoin network, a Bitcoin hash is basically sha256 done twice. Bitcoin uses much the same cryptography that most banks, ssl certs and other internet cryptography use. Unless you plan to memory hole the entire topic of sha256 and bitcoin hash algorithms, it seems unlikely that any government operating on the premise of a citizenry with the right to free speech, could prevent it.