In 2015 it was revealed that the Swiss company Crypto AG had installed this kind of backdoor into the
encryption machines they sold to Iran, Libya, and other countries at the behest of the NSA, GCHQ, and
the BND. They backdoored machines at least from 1955 to 1997 and led to the exposure of diplomatic
communications in the 1980's.
Telegram's "ICO" is quite different from other ICOs in the way it is structured.
And they claim a "Proof of Stake" mining. But I actually suspect that the whole system will be centralized!
They have a ton of their own hardware for some reason! If they make it centralized, then they will be
able to get huge transaction rates for very little cost and will be able to handle a huge number of
participants.
But, of course, a centralized coin is not very sexy! So I suspect they will do just enough to let them call
it decentralized and to back up their "libertarian" stance while making tons of money and feeding all
kinds of sensitive into to the FSB!
But I guess we'll just have to see how it plays out!
And the Huawei issue is quite topical because there's this story going around:
Don’t use Huawei phones, say heads of FBI, CIA, and NSA
178
The US intelligence community is still worried about Chinese tech giants’ government ties
https:// www.theverge.com/2018/2/14/17011246/huawei-phones-safe-us-intelligence-chief-fears
Don't use Huawei phones, FBI warns
http:// www.newshub.co.nz/home/money/2018/02/don-t-use-huawei-phones-fbi-warns.html
Now it may be that the Huawei phones are indeed sending info back to China, I have no idea. But I wouldn't
be surprised if that story was concocted by big US phone makers to try to counteract $100 phones which are
almost as good as the $1000 US offerings.
A bit of evidence in favor of that interpretation:
UK cyber security agency sticks with China's Huawei despite US spy fears
http:// www.telegraph.co.uk/technology/2018/02/20/uk-cyber-security-agency-sticks-chinas-huawei-despite-us-spy/
There's also the related story (supposedly now debunked) that the Trump admin is considering nationalizing the 5G phone
network to prevent cheap Chinese cell tower equipment from being a security risk:
Scoop: Trump team considers nationalizing 5G network
https:// www.axios.com/trump-team-debates-nationalizing-5g-network-f1e92a49-60f2-4e3e-acd4-f3eb03d910ff.html
Again, I wouldn't be surprised if this were a ploy by US manufacturers to lock out cheaper competition…
I thought his comments on the Wassenaar Agreement were interesting:
"I am convinced that all export versions of encryption system contain backdoors in one way or another. This is a direct constraint from the Wassenaar agreement. In this respect, the crypto AG and other companies (revealed by the Hans Buehler case) are the best examples. There are other less known [examples].
If this is true, it would be interesting to think through the consequences for cryptocurrencies.
Bitcoin uses 3 cryptographic primitives:
The Cryptography of Bitcoin
http:// blog.ezyang.com/2011/06/the-cryptography-of-bitcoin/
The public key cryptography is:
Elliptic Curve DSA on the curve secp256k1
https:// en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm
The proof of work cryptographic hash function is SHA256:
https:// en.wikipedia.org/wiki/SHA-2
and it also uses another hash function RIPEMD-160:
https:// en.wikipedia.org/wiki/RIPEMD
Here's why it uses two hash functions (though I'm not sure that answer is very convincing!):
Why does Bitcoin use two hash functions (SHA-256 and RIPEMD-160) to create an address?
https:// bitcoin.stackexchange.com/questions/9202/why-does-bitcoin-use-two-hash-functions-sha-256-and-ripemd-160-to-create-an-ad
I haven't seen anyone questioning the security of any of those 3 primitives, but of course they wouldn't would they!
I did find this intriguing article suggesting that quantum computers might break the elliptic curve signature
scheme by 2027:
Bitcoin’s Elliptic Curve Signature Could be Broken by 2027
https:// news.bitcoin.com/bitcoins-encryption-could-be-broken-by-2027-claim-singapore-quantum-experts/
but it suggests that the proof of work SHA256 will not be significantly sped up by quantum computing in the next 10 years.
More suspicious "explanation" for the two hashes:
Why use both SHA and RIPEMD to generate the public address? Why not use one or the other?
https:// www.reddit.com/r/Bitcoin/comments/3ggjyg/why_use_both_sha_and_ripemd_to_generate_the/
A bit more believable to me (of course he's assuming Satoshi is trying to protect bitcoin from being broken by the NSA instead
of him being the NSA!):
How to steal all coins
http:// blog.oleganza.com/post/42523601710/how-to-steal-all-coins