Catalina macOS / bin / sh vs / bin / bash and history display with previous hash

Not really a question but an observation. When I do sys ad on Linux, I like to preface the hash commands "https://superuser.com/#" to reread my work, and leave a thread of Ariane so that I can come back to later.

I've recently discovered on macOS Catalina (which is now my main hobbyhorse), that bash do not print lines in the history file with a previous hash, which does not seem to be the case in other versions of Linux, namely RHEL, Ubuntu

$ echo $SHELL
/bin/bash
$ echo foo
foo
$ #echo bar
$ !:p
echo foo


$ echo $SHELL 
/bin/sh
$ echo foo
foo
$ #echo bar
$ !:p
#echo bar
$ sw_vers
ProductName:    Mac OS X
ProductVersion: 10.15
BuildVersion:   19A602

Blockchain.info explore does not recognize my hash

Blockchain.info does not recognize my tx. Anyone can explain this. My wallet is debited. The transaction is not confirmed either.

Automatic hash – hashautomatical.biz – HYIPs

I am neither an administrator nor owner of this program!

Start: October 18, 2019

The description

Hash Automatical is a platform combining cloud mining and hosting service, providing a simple solution for cryptocurrency extraction. Our main objective is to offer a high quality and cheap service to those who would like to get involved in cryptocurrency mining or to anyone interested in investing in cryptocurrency.

Bitcoin is the digital currency driving the dynamic development of blockchain technology, and many believe it will be the future of global finance.

The process of obtaining Bitcoin is called Mining and Hash Automatical Limited is the place where people can come and get digital currency while increasing the value of their initial contribution by developing their network. associated minors. We provide mining power, we take care of technology and maintenance – you will reap the benefits.

Investment plans

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(2) 250% after 20 days

(3) 1000% after 30 days

Payment options: Bitcoin

Type of withdrawal: moment

Reference commissions: 5% -1%

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mining equipment – hash board problem in Dragonmint T1

-I've cleaned the table of 3 hash of dragonmint T1 using the fan yesterday.
so I assembled them

.

"

When I turned on the power, the light of 3 hash boards is on, but after a few seconds, only one hash board is working and two of them are not working!
and I can not that two hash cards in the device setting. !!!

"

"What is the problem??"
what should I do??
Thank you

hash – secure display of integers hidden with MD5

This very high-end GPU cracker performs 200GH / s:

https://gist.github.com/epixoip/a83d38f412b4737e99bbef804a270c40

That's 200 billion hashes per second (2nd11 hashes / s). With a search space of 1e19 possible numbers, it means that it will take around 500,000 seconds (about a year and a half) to perform an exhaustive search of parameter space. Of course, on average you will find a match in half that time.

In short, MD5 is a fast algorithm, which normally means that brute force is easy. However, in this case, the large size of your search space will cancel many.

However, depending on what is happening for an experienced user, MD5 might not be the best choice. A top end hash platform is too slow of a factor ~ 200,000. This sounds like a lot, but you basically ask "How long before my hardware is 200,000 times faster?" . Although the pace of growth of computer hardware has slowed down, it is not unrealistic to expect this gap to narrow significantly over the next few years.

Finally, you should also be concerned about the weaknesses of the image resistance. I have not "checked" the status of the MD5 for a while, but the last time I heard, the MD5 was still resistant to pre-imaging. Without pre-image resistance, an attacker might be able to find something that gives the same hash without actually having to force the original number.

In short, you are safe for the moment. The margin of safety may not be so high. Whether or not you need to take action depends on what you are doing on the other side.

Hash Automatic Reviews: Scam or Legend?

Hashautomatical LIMITED

Auto cryptography system
We offer a high quality asset management service,
based on a large network of hardware from all over the world.

https://hashautomatical.biz

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Minimum deposit – 0.001 BTC.

Withdrawal: Instant

Bitcoin accepted

Why does not the hash of public keys provide any quantum resistance?

Although the hash of a public key in itself provides quantum resistance, it is actually only if it is considered in itself in the void. Unfortunately, public key hashes do not exist in isolation and there are many other things in Bitcoin that need to be taken into account.

First, if the public keys have been minced, the funds are protected only when they are spent. As soon as a P2PKH or P2WPKH output is used, the public key is exposed. Although the transaction is not confirmed, an attacker with a fast enough quantum computer could calculate the private key and create a conflicting transaction that sends the funds to itself instead of the intended recipient.

In addition, if this attacker is a minor, he can do it with every transaction and refuse to mine transactions that do not send the coins to himself.

While this is a problem, people often claim that it's better than just spending Bitcoin because they have the blockchain's public key. While this is true, there are a very large number of outputs with exposed public keys.

More than 5.5 million Bitcoins are in outputs with exposed public keys, either because it is P2PK output, or because users are reusing addresses. Thus, public keys are exposed in other transactions. So, if there was a quantum computer capable of producing the private key of a public key in a reasonable amount of time, the attacker would be able to steal so much bitcoin that it would decimate it. Bitcoin economy and that it would become worthless.

Thus, although your particular outputs can be protected by hashes, the value of these outputs will be 0, millions of Bitcoins being stolen. All that hashes do is create a false sense of security.

Then there are problems with the tools and portfolios software, which simply expose the public keys other than in the transactions and the blockchain. No existing tools treat public keys as private information; there is no reason that they should.

Many portfolios send the parent extended public key to a server so that the server can monitor transactions and return that data to the client. Anyone who uses such a portfolio, even temporarily, exposes their parent public key to a service provider. This provider could then calculate the private keys of the public keys it has, extract all the child keys and steal all the bitcoins associated with anyone who has used their wallet.

Additional problems exist with complex scripts and contracts involving public keys. These scripts, such as multisigs, do not hack public keys. In addition, these contracts generally exist because not all parties necessarily trust each other; any of them could be malicious. In such cases, a malicious contract participant would know the public keys involved (knowing the script) and would be able to steal the Bitcoin associated with those exits. Existing public key hashes do not protect against this.

Thus, overall, public keys are already exposed in many ways outside of transactions. All of this would allow different types of attacks to steal millions of Bitcoin, which would change Bitcoin's value to 0, which would make any Bitcoin protected by public key hashes anyway. In addition, users are likely to expose their public keys unexpectedly because of the software they use. The use of public key hashes therefore serves only to create a false sense of security while increasing the size of transactions. In general, this is not worth the extra size.

Finally, it is possible to switch to post-quantum cryptography if it is established that there is a quality control that can break the ECDLP. If it is detected in time but still too late to perform an appropriate upgrade, any use of ECDLP-based signature algorithms (ie ECDSA and Schnorr) could be generated smoothly, which would lock all the pieces. The parts could then be spent by providing a proof of zero knowledge of some unexposed or resistant quantum information that indicates the ownership of the private keys for the public key.

For example, users can prove that they have the BIP seed 32 used to derive the private key from the given public key. Since it is a proof to zero knowledge, the seed itself is not exposed (note that it is not part of a public-private key pair and so there is no shared public component). Since most portfolios use BIP 32, this should be enough. There may be other ways to prove ownership without risking coins that have not been thought of yet.

And of course, all of this assumes that a quantum computer capable of computing the private key for a public key appears without the public being aware that the technology is close to existing. What is likely to happen is that the progress of quantum computers will be observed and, before they are powerful enough to break ECDLP, Bitcoin will logically modify a strong Quantum signature algorithm. Eventually, the signatures pressing ECDLP will be removed. And all of this will happen before quantum computers really become a common thread. So, in this scenario, the hash of public keys does not provide any help anyway.


Note that all of the above is not limited to quantum computers. It generally applies to any cryptographic break of ECDSA (or Schnorr).

Hash Golden Crypto Investment – Hashgolden.com

IPB image

I am not an administrator here!

QUOTE

Investing in cryptocurrency is clearly a good idea. Millions of people around the world have already done so and have seen the amazing results of investing in cryptocurrency like Bitcoin. With so many options available, however, how do you make the best investment?
The answer is in HashGolden. Our company has worked diligently to create a powerful automated software that will allow your investment to invest in autopilot and will take care of everything. Sit back and watch the growth of your investments.
If you do not know the first thing about Ethereum, or if you've never heard the term ICO, it's okay. HashGolden simplifies every step of the process by taking your initial investment and optimizing it based on a number of real-time market factors.
HashGolden is made up of a team of cryptocurrency experts who know the true potential of Bitcoin and other crypto. We know the market better than most others and our platform is second to none. We invite you to see what our customers love. Contact us today for a no-obligation consultation to see how HashGolden can change your crypto-currency investment game forever.

IPB image

Auto Mining Fast Project: 35% – 50% per hour for 3 hours
Plan Amount Spent ($) Hourly Profit (%)
Plan 1 $ 1.00 – $ 500.00 35.00
Plan 2 $ 501.00 – $ 1000.00 37.00
Plan $ 3,100.00 – $ 2500.00
Plan $ 4 2501.00 – $ 5000.00 45.00
Plan $ 5,5001.00 – $ 25,000.00 50.00

Automatic Mining Standard: Hourly 18% to 35% for 6 hours
Plan Amount Spent ($) Hourly Profit (%)
Plan 1 $ 1.00 – $ 1000.00 18.00
Plan $ 2,100.00 – $ 2500.00 20.00
Plan $ 3,250.00 – $ 5000.00 25.00
Plan $ 4,500.00 – $ 15,000.00 30.00
Plan 5 15001,00 $ – 50000,00 $ 35,00

Auto Mining High Profit Project: 7.5% – 25% per hour for 15 hours
Plan Amount Spent ($) Hourly Profit (%)
Plan 1 $ 1.00 – $ 2500.00 7.50
Plan $ 2 2501.00 – $ 5000.00 10.00
Plan $ 3,500.00 – $ 15,000.00 15,00
Plan 4 15001,00 $ – 25000,00 $ 20,00
Plan 5 $ 25001.00 – $ 75000.00 25.00

Auto Mining Big Profit Project: 200% – 450% after 3 days
Plan Amount spent ($) Profit (%)
Plan 1 $ 1.00 – $ 500.00 200.00
Plan 2 $ 501.00 – $ 1000.00 250.00
Plan $ 3,100.00 – $ 2500.00 $ 300.00
Plan $ 4 2501.00 – $ 5000.00 350.00
Plan $ 5,5001.00 – $ 25,000.00 450.00

Auto Mining Project Big High Profit: 355% – 800% after 6 days
Plan Amount spent ($) Profit (%)
Plan 1 $ 1.00 – $ 1000.00 $ 355.00
Plan $ 2,100.00 – $ 2500.00 $ 455.00
Plan $ 3,250.00 – $ 5000.00 $ 555.00
Plan $ 4,500.00 – $ 15,000.00 $ 655.00
Plan 5 15001,00 $ – 50000,00 $ 800,00

Project Auto Mining VIP Profit: 1250% – 2000% after 12 days
Plan Amount spent ($) Profit (%)
Plan 1 $ 1.00 – $ 2500.00 1250.00
Plan $ 2 2501.00 – $ 5000.00 1350.00
Plan $ 3,500.00 – $ 15,000.00 1500.00
Plan 4 $ 15001.00 – $ 25000.00 1750.00
Plan 5 $ 25001.00 – $ 75000.00 2000.00

QUOTE

SSL encryption
DDos Protection
Registrar NameSilo, LLC
Created on 2019-10-04
Expires on 2020-10-04
Updated on 2019-10-05
NS NS1.RISEHOSTER.COM NS2.RISEHOSTER.COM
NS1.RISEHOSTER.COM NS2.RISEHOSTER.COM

Accept: PM, Payer, Bitcoin …

Register here: https://hashgolden.com/

Small image

My deposit:

QUOTE

The amount of $ 100 has been withdrawn from your account.
Accounts: U4603107-> U22660912. Memo: Payment cart.
Post on hashgolden.com User hyiptank ..
Date: 14:28 to 14.10.19. Lot: 284671140.

Hash Golden Crypto Investment – hashgolden.com – HYIPs

banner125.gif "data-src =" https://hashgolden.com/banners/banner125.gif "src =" https://topgoldforum.com/applications/core/interface/js/spacer.png "/>
</p>
<p>	I am not an administrator here!</p>
<blockquote class=

Investing in cryptocurrency is clearly a good idea. Millions of people around the world have already done so and have seen the amazing results of investing in cryptocurrency like Bitcoin. With so many options available, however, how do you make the best investment?

The answer is in HashGolden. Our company has worked diligently to create a powerful automated software that will allow your investment to invest in autopilot and will take care of everything. Sit back and watch the growth of your investments.
If you do not know the first thing about Ethereum, or if you've never heard the term ICO, it's okay. HashGolden simplifies every step of the process by taking your initial investment and optimizing it based on a number of real-time market factors.
HashGolden is made up of a team of cryptocurrency experts who know the true potential of Bitcoin and other crypto. We know the market better than most others and our platform is second to none. We invite you to see what our customers love. Contact us today for a no-obligation consultation to see how HashGolden can change your crypto-currency investment game forever.

banner468.gif "data-src =" https://hashgolden.com/banners/banner468.gif "src =" https://topgoldforum.com/applications/core/interface/js/spacer.png "/>
</p>
<p>
	<strong>Auto Mining Fast Project: 35% – 50% per hour for 3 hours</strong><br />Plan Amount Spent ($) Hourly Profit (%)<br />Plan 1 $ 1.00 – $ 500.00 35.00<br />Plan 2 $ 501.00 – $ 1000.00 37.00<br />Plan $ 3,100.00 – $ 2500.00<br />Plan $ 4 2501.00 – $ 5000.00 45.00<br />Plan $ 5,5001.00 – $ 25,000.00 50.00
</p>
<p>
	<strong>Automatic Mining Standard: Hourly 18% to 35% for 6 hours</strong><br />Plan Amount Spent ($) Hourly Profit (%)<br />Plan 1 $ 1.00 – $ 1000.00 18.00<br />Plan $ 2,100.00 – $ 2500.00 20.00<br />Plan $ 3,250.00 – $ 5000.00 25.00<br />Plan $ 4,500.00 – $ 15,000.00 30.00<br />Plan 5 15001,00 $ – 50000,00 $ 35,00
</p>
<p>
	<strong>Auto Mining High Profit Project: 7.5% – 25% per hour for 15 hours</strong><br />Plan Amount Spent ($) Hourly Profit (%)<br />Plan 1 $ 1.00 – $ 2500.00 7.50<br />Plan $ 2 2501.00 – $ 5000.00 10.00<br />Plan $ 3,500.00 – $ 15,000.00 15,00<br />Plan 4 15001,00 $ – 25000,00 $ 20,00<br />Plan 5 $ 25001.00 – $ 75000.00 25.00
</p>
<p>
	<strong>Auto Mining Big Profit Project: 200% – 450% after 3 days</strong><br />Plan Amount spent ($) Profit (%)<br />Plan 1 $ 1.00 – $ 500.00 200.00<br />Plan 2 $ 501.00 – $ 1000.00 250.00<br />Plan $ 3,100.00 – $ 2500.00 $ 300.00<br />Plan $ 4 2501.00 – $ 5000.00 350.00<br />Plan $ 5,5001.00 – $ 25,000.00 450.00
</p>
<p>
	<strong>Auto Mining Project Big High Profit: 355% – 800% after 6 days</strong><br />Plan Amount spent ($) Profit (%)<br />Plan 1 $ 1.00 – $ 1000.00 $ 355.00<br />Plan $ 2,100.00 – $ 2500.00 $ 455.00<br />Plan $ 3,250.00 – $ 5000.00 $ 555.00<br />Plan $ 4,500.00 – $ 15,000.00 $ 655.00<br />Plan 5 15001,00 $ – 50000,00 $ 800,00
</p>
<p>
	<strong>Project Auto Mining VIP Profit: 1250% – 2000% after 12 days</strong><br />Plan Amount spent ($) Profit (%)<br />Plan 1 $ 1.00 – $ 2500.00 1250.00<br />Plan $ 2 2501.00 – $ 5000.00 1350.00<br />Plan $ 3,500.00 – $ 15,000.00 1500.00<br />Plan 4 $ 15001.00 – $ 25000.00 1750.00<br />Plan 5 $ 25001.00 – $ 75000.00 2000.00
</p>
<blockquote class=

SSL encryption

DDos Protection
Registrar NameSilo, LLC
Created on 2019-10-04
Expires on 2020-10-04
Updated on 2019-10-05
NS NS1.RISEHOSTER.COM NS2.RISEHOSTER.COM
NS1.RISEHOSTER.COM NS2.RISEHOSTER.COM

Accept: PM, Payer, Bitcoin …

Register here: https://hashgolden.com/

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</p>
<p>
	<em><strong>My deposit:</strong></em></p>
<blockquote class=

The amount of $ 100 has been withdrawn from your account.

Accounts: U4603107-> U22660912. Memo: Payment cart.
Post on hashgolden.com User hyiptank ..
Date: 14:28 to 14.10.19. Lot: 284671140.

Are HAIFA-based hash functions (eg, Argon2) resistant to length extension attacks?

Could a hash function based on the HAIFA construct such as Argon2 be vulnerable to length extension attacks?
(I say that Argon2 is based on HAIFA because BLAKE is and Argon2 is based on BLAKE)