Renowned Cryptographer Says His Patent Was an Obstacle for ...

Are we naive to think the elites were surprised by btc/blockchain? Some interesting points inside.

I'll start with saying the concept of blockchain was created by NSA with a bunch of cryptologists in 1994-1997 so they have known about it for a long time(even created it, actual paper below)
disclaimer: theres just a tiny bit of a conspiracy spin to it
With that as a starting point, it’s now becoming increasingly evident that Bitcoin MAY be a creation of the NSA and was rolled out as a “normalization” experiment to get the public familiar with digital currency. Once this is established, the world’s fiat currencies will be obliterated in an engineered debt collapse (), then replaced with a government approved cryptocurrency with tracking of all transactions and digital wallets by the world’s western governments.
What evidence supports this notion? First, take a look at this document entitled, “How to make a mint: The cryptography of anonymous electronic cash.” This document, released in 1997 — yes, twenty years ago — detailed the overall structure and function of Bitcoin cryptocurrency.
[1997]With the onset of the Information Age, our nation is becoming increasingly dependent on network communications. Computer-based technology is impacting significantly our ability to access, store, and distribute information.
An electronic payment protocol involves a series of transactions, resulting in a payment being made using a token issued by a third party.
The most common example is the electronic approval process used to complete a credit card transaction; neither payer nor payee issues the token in an electronic payment.
The electronic payment scenario assumes three kinds of players:
" a payer or consumer ("Alice"),
" a payee, such as a merchant ("Bob"), and
" a financial network with whom both Alice and Bob have accounts(the "Bank")
Why would they want blockchain? Its even mentioned in the paper.
The untraceability property of electronic cash creates problems in detecting money laundering and tax evasion because there is no way to link the payer and payee. To counter this problem, it is possible to design a system that has an option to restore traceability using an escrow mechanism.
Theyre talking about blockchain and tracing money in fucken 1997.
So whilst btc is great and open source but do you think this is going to replace banks? That they didnt see this coming? Blockchain is great for goverment.
Btc is Robin Hood style money and its gonna get smashed.
"See Tony Eng & Tatsuaki Okamoto, Single-Term Divisib Electronic Coins, 1994 ADvANcES IN CRYPTOLOGY-EUROCRYPT '94, LECTURE NOTES IN COMPUTER SGI. 311, 313."
Three divisible off-line cash schemes have been proposed, but at the cost of longer transaction time and additional storage.
Eng/Okamoto's divisible scheme is based on the "cut and choose"
Okamoto's scheme is much more efficient and is based on Brands' scheme but also will work on Ferguson's scheme.'
Okamoto and Ohta's scheme is the most efficient of the three, but also the most complicated.
It relies on the difficulty of factoring and on the difficulty of computing discrete logarithms.
Eng/Tatsuaki Okamoto and Ohta's scheme
Tatsuaki Okamoto +eng+ohta
Satoshi Nakamoto
Did these 3 create this or?
It is evident that SHA-256, the algorithm Satoshi used to secure Bitcoin, was not available because it came about in 2001. However, SHA-1 would have been available to them, having been published in 1993.
On top of the fact that the NSA authored a technical paper on cryptocurrency long before the arrival of Bitcoin, the agency is also the creator of the SHA-256 hash upon which every Bitcoin transaction in the world depends. “The integrity of Bitcoin depends on a hash function called SHA-256, which was designed by the NSA and published by the National Institute for Standards and Technology (NIST).”
“If you assume that the NSA did something to SHA-256, which no outside researcher has detected, what you get is the ability, with credible and detectable action, they would be able to forge transactions. The really scary thing is somebody finds a way to find collisions in SHA-256 really fast without brute-forcing it or using lots of hardware and then they take control of the network.” Cryptography researcher Matthew D. Green of Johns Hopkins University said.
Chaum developed ecash way back in 1983, long before the large scale propagation of the world wide web. Chaum was a proponent of anonymity in transactions, with the express demand that banks and governments would have no way of knowing who had purchased what.
Although Bitcoin adds mining and a shared, peer-to-peer blockchain transaction authentication system to this structure, it’s clear that the NSA was researching cryptocurrencies long before everyday users had ever heard of the term.
‘I wouldn’t be surprised if he is actually an American working for the NSA specializing in cryptography. Then he got sick of the government’s monetary policies and decided to create Bitcoin.’ Vitalik Buterin account then replied: ‘Or the NSA itself decided to create Bitcoin.
Here you see a freedom of information act letter to the NSA asking about their involvement in BTC and they say its classified lol
Why the fuck would that be classified?
We're fucked guys.
submitted by pabbseven to CryptoCurrency [link] [comments]

A brief history of the Monero development (Part I)

or a struggle for anonymity and confidentiality of blockchain transaction.
The issues of privacy of electronic currency faced researchers and developers for a long time, long before Bitcoin. In 1991, Tatsuaki Okamoto and Kazuo Ohta from the NTT research laboratory (Japan's largest telecommunications company) introduced 6 criteria for an ideal e-currency, including privacy: "relationship between the user and his purchases must be untraceable by anyone". Nicholas van Saberhagen, an anonymous author behind the work on the CryptoNote protocol, which formed the basis of Monero, in December 2012 summarized these 6 criteria to two specific properties:
Untraceability: for every incoming transaction, all possible senders are equally likely.Unlinkability: for any two outgoing transactions, it is impossible to prove that they were sent to the same person.
None of the other properties are characteristic of Bitcoin, since all transactions are broadcasted publicly. Of course, by the time this work was written, various tumblers made it possible to combine outputs of several transactions and send them through some intermediate address. Also, by that time, some protocols based on the zero-knowledge proof were known, but at that time such evidence was large enough to make them impractical to use.
What was proposed to tackle the issues: firstly, each transaction was signed on behalf of the group, not the individual, as in BTC. To do this, we used the option of an electronic digital signature called "Ring Signature" (further development of the so-called "Group Signature"). However, when implementing a completely anonymous ring signature, a (very high) probability of double spending of coins arose, and therefore the so-called linkable anonymity primitive was taken, which was implemented through a one-time-key mechanism (i.e., when creating each new transaction, the group key changes).
Essentially, although it's certainly worth noting that the CryptoNote implementation used a different scheme of elliptical curves (EdDSA instead of ECDSA, as a result, an elliptic curve with a different equation was used, etc.).
Anonymity achieved, but what about privacy? RingCT to the rescue
You know how it happens: everything seems to be there, but something is missing. The problem with the original CryptoNote protocol was that the user balances were not hidden, and thus, it was possible to analyze the blockchain and deanonymize the members of the group who signed the transaction. An additional problem with hiding balances is that with simple encryption of balances, it is not possible to reach a consensus on whether coins were produced from the thin air or not.
To solve this problem, the developer Shen Noether from Monero Research Lab proposed the use of the Pederson Commitment, which allows the prover to calculate the obligation for the amount without disclosing it and being unable to change it.
Short explanation from Monero Wiki:
As long as the encrypted output amounts created, which include an output for the recipient and a change output back to the sender, and the unencrypted transaction fee is equal to the sum of the inputs that are being spent, it is a legitimate transaction and can be confirmed to not be creating Monero out of thin air.
Thus, it is possible to obtain a ring confidential transaction (hence the name). And, the inquisitive reader will ask, what is wrong this time?
The problem is one, but twofold. On the one hand, the size of the transaction increases with RingCT, which does not have the best effect on scalability and transaction fees. Besides, again, due to the large size of the signature, the number of possible subscribers n is limited. So, the n value in the official software of Monero wallet is from 5 to 20 by default. As a result, the sender anonymity for RingCT1.0 is at most 1 out of 20.
To be continued...
submitted by CUTcoin to cutc0in [link] [comments]

Satoshi birthday 7 million quiz

To celebrate Satoshi's birthday I am giving away a brain wallet with some satoshis on it. Not much, only 7 million, which is about $350 now. This is just for fun and to experiment with this format. Maybe help people learn about brain wallets.
I have just sent the satoshis to the first address in the brain wallet.
To find the seed, answer the following 7 quiz questions (multiple choice). The SHA 256 hash of all correct answers combined is the wallet seed. Insert one space between answers.
Brute forcing all 16384 possible combinations is a trivial exercise if you are prepared for this kind of quiz and have hours or days of time at your disposal. I count on that not being the case and the race getting decided by who gets the perfect answer first by either knowing the answer or searching faster than others. From that point on it still takes some time to derive and sweep the relevant private key from the brain wallet seed. And of course you need to know how to do that in the first place. If multiple perfect scoring answers compete in that race, it may be a matter of luck which sweeping transaction confirms first.
Let's see how long it takes before someone sweeps that address. It will be interesting to see if it takes more or less than the average ten minutes for finding a block.
  1. On December 7, 2010 a) There was a guy describing himself as an ordained priest offering to "bless your dildo" for only one bitcoin on the Bitcoin subreddit. b) Satoshi was a moderator of the Bitcoin subreddit with the user name noagendamarker. c) The Bitcoin subreddit had less subscribers than Satoshi's age at the time. d) There were were only two posts about price on the Bitcoin subreddit.
  2. Satoshi chose April 5 as his birthday because the American government prohibited private holding of gold on that day. Which of the following is correct? a) The government paid less than the world market price for gold when they prohibited private holding that day. b) Roosevelt had the authority to do this under the Trading with the Enemy Act of 1917 and the executive order also prohibited importing gold into the United States. c) Franklin D. Roosevelt required all American citizens by executive order 6102 to deliver all of their gold at the fixed price of $20.67 before May 1st. d) In a challenge to this executive order the government won by a 6 to 3 majority decision at the Supreme Court.
  3. If you mined bitcoins on Satoshi's 34th birthday, you would on average mine (according to a post by Satoshi) a) A few tens of bitcoins a day. b) A few bitcoins a day. c) A few thousand bitcoins a day. d) A few hundred bitcoins a day.
  4. Which of the following Bitcoin burn addresses has the largest balance? a) 1AndrewYangForPresident2o2ozm6Pzd. b) 1WarrenForPresident2o2oxxxy3DCZMZ. c) 1SandersForPresident2o2oxxxvYnPyW. d) 1TRUMPforPresident2o2oxxxxxAvY6s.
  5. The author of a paper proposing a practical escrow cash system in 1996 was a) Satoshi Sakamoto. b) Tatsuaki Okamoto. c) Satoshi Nakamoto. d) Tatsuaki Nakamura.
  6. The small girl looking at the two most famous pizzas in history in 2010 was a) wearing a red t-shirt. b) wearing a green t-shirt. c) wearing a blue t-shirt. d) wearing a yellow t-shirt.
  7. RPOW was a proof-of-work based system using trusted computing. It ran on a) an IBM 4758 PCI Cryptographic Coprocessor. b) an Intel 4758 PCI Cryptographic Coprocessor. c) an AMD 4758 PCI Cryptographic Coprocessor. d) a Dell 4758 PCI Cryptographic Coprocessor.
submitted by AoiNakamoto to Bitcoin [link] [comments]

ASIACRYPT 2016 - Rump Session 2016WJ Final 1A 06 Tatsuaki Okamoto KANN DER BITCOIN NOCHMAL UNTER $10,000 USD FALLEN? The Truth about Bitcoin? IOHK  Consensus protocols - efficiency

11. Tatsuaki Okamoto, An Efficient Divisible Electronic Cash Scheme, Advances in Cryptology - CRYPTO '95, Springer-Verlag, pp. 438-451. 12. Tatsuaki Okamoto and Kazuo Ohta, Universal Electronic Cash, Advances in Cryptology - CRYPTO '91, Springer-Verlag, pp. 324-337. Tatsuaki Okamoto explica por qué su patente de "dinero electrónico" podría haber supuesto un obstáculo para Hal Finney en su ambición de crear su propia mo Spread the love Okamoto explains why his “electronic cash” patent may have presented obstacles to Hal Finney’s plans to make his own electronic currency. Tatsuaki Okamoto explains why his “electronic cash” patent might have presented an obstacle to Hal Finney in his ambition to create his own electronic currency. Six key patents Sometime before Dec. 6, 2004, Hal Finney did a search ... One of their researchers and investigators is a man named Tatsuaki Okamoto. When they actively started writing the code they chose the pseudonym "Satoshi Nakamura" to ultimately promote the idea that Tatsuaki Okamoto to any and all who investigated the source of bitcoin long enough. But Tatsuaki Okamoto is just a cog. He's not some rogue savoir out to topple centralized banks. Not at all. He ... Bitcoin and Cryptocurrency Technologies provides a comprehensive introduction to the revolutionary yet often misunderstood new technologies of digital currency. Whether you are a student, software developer, tech entrepreneur, or researcher in computer science, this authoritative and self-contained book tells you everything you need to know ...

[index] [27441] [43233] [7331] [4457] [5780] [49004] [11929] [11467] [32400] [44293]

ASIACRYPT 2016 - Rump Session

Tuesday, December 6 9:00-9:50 Invited Lecture II Hoeteck Wee, “Advances in Functional Encryption” Chair: Tatsuaki Okamoto 9:55-10:20 Invited to JoC Nonlinear Invariant Attack –Practical ... Tatsuaki Okamoto explains why his “electronic cash” patent might have presented an obstacle to Hal Finney in his ambition to create his own electronic curren... He has also been a long-term visitor at the NTT Secure Plaftorm Laboratories working with Tatsuaki Okamoto and Masayuki Abe and at the Cryptography Group at Bar Ilan University working with Yehuda ... This video is unavailable. Watch Queue Queue. Watch Queue Queue One of the researchers they referenced was Tatsuaki Okamoto... PART 2/4 - 'Crypto Market': Most of the crypto market is a scam. By the way, this was predicted very early on in the Bitcoin Talk ...