sha3 | Erlang NIFs | Cryptography library
kandi X-RAY | sha3 Summary
kandi X-RAY | sha3 Summary
sha3 is a NIF wrapper around SHA-3/KECCAK cryptographic hashing function.
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QUESTION
From within a docker container (in my case running a Debian Busty based image) how can I detect whether it's running under QEMU emulation (as happens on ARM Macs for AMD64 images)?
From the non-docker perspective I've seen suggestion that cpuinfo
might surface this, but it doesn't yield anything directly QEMU related when run from inside my container:
ANSWER
Answered 2022-Mar-28 at 07:26There are more ways to detect that the container is running under the emulation, however the most reliable way is to use identify if the entry point is emulated.
When a container is created, the entry point will become the PID 1. The mechanism that Docker uses for the qemu
emulation will detect that the entry point is for a different architecture and will involve the emulator to emulate the architecture. You can read more about the mechanism used in this post.
Since the entry point will be emulated, the process name will be replaced with the qemu-xxxx
where the xxxx
is the architecture that will be emulated. We can identify if our entry pint process was substituted for qemu
if we call ps -uax
as in the following example:
QUESTION
I am trying to implement a soap client for a server that uses NTLM authentication. The libraries that I use (requests-ntlm2 which relies on ntlm-auth) implement the MD4 algorithm that lies in the core of the NTLM protocol via the standard library's hashlib.
Although hashlib seems to support MD4:
...ANSWER
Answered 2022-Mar-26 at 13:14Well, it seems that there was something corrupted in my conda environment. I created a new identical one, and it's been working ever since without having to change anything else.
QUESTION
I followed the MMIO Peripherals page from the Chipyard documentation to learn about adding modules to rocket-chip within Chipyard framework - and all that seems to have worked pretty well. I summed up my experiences and tried to write it in a slower pace on the pages of the Chisel Learning Journey <== adding that only if the person answering question may want to take a look and see that I've got everything working correctly. In other words, I added the MMIO with in the example
package of Chipyard and it compiles, generates simulator, responds properly to toy benchmark I devised, I even see the corresponding waveforms in gtkwave.
Now, the next step I would like to take is to separate this dummy design (it literally just reads from a memory mapped register that holds a hardcoded value) from the chipyard/rocket-chip infrastructure in the sense that it is housed in a separate repo, that will become a submodule of my chipyard. So, to do that, I've started from this page and took all the steps as given there:
- a new repo was created, called it
my-chip
- into the
my-chip
I addedbuild.sbt
of the following content:
ANSWER
Answered 2022-Mar-03 at 16:36The error comes from the -
in lazy val my-chip
and package my-chip
. If you want to use a -
in a scala name you can wrap the name in backticks, like `my-chip`
.
QUESTION
I need to make something like this:
Checksum of parameters: {"sessionId":"str","merchantId":int,"amount":int,"currency":"str","crc":"str"}
calculated with the use of sha384
My code:
...ANSWER
Answered 2022-Feb-07 at 15:04I bet you need to calculate JSON checksum.
QUESTION
I have this ts function:
...ANSWER
Answered 2022-Jan-11 at 13:29Here you are returning array
instead of string
which is then being passed to Digest::Keccak256.new.hexdigest
Change this:
QUESTION
I have this list of address that I want to mint in Polygon Network:
...ANSWER
Answered 2021-Dec-11 at 17:47The address that you are using are valid, but in the version of the erc721 contract that you are using (I'm not sure is this behavior has changed in the version 4 of openzeppelin contracts) in order to receive an erc721 in a contract the contract should have implemented this https://docs.openzeppelin.com/contracts/3.x/api/token/erc721#IERC721Receiver , in order to prevent tokens being locked in contracts
QUESTION
I'm trying to modify an SSH client using SSHJ so that it only allows certain ciphers. I have properties in a properties file something like this:
...ANSWER
Answered 2021-Dec-07 at 13:07For future reference/anyone else who wants a quick solution, here's a derived class from DefaultConfig, as suggested by @Robert.
QUESTION
i ve been trying to learn stuff about smart contracts lately, but when i tried to understand how a token transfer works i ve encountered this problem. || execution reverted: ERC20: transfer from the zero address || (ropsten network)
the code:
...ANSWER
Answered 2021-Nov-05 at 06:02Apparently, the problem was with the gasLimit
. I changed the gasLimit
to:
QUESTION
I need a function (Java/Kotlin) that returns hashMessage which corresponds to Solidity function:
...ANSWER
Answered 2021-Oct-02 at 20:51I've finally found the solution, so I'll post it here if anyone needs it.
The main question was, what is the abi.encodePacked()
method doing "under the hood".
HERE is a detailed explanation how some of the parameters are encoded in this method.
For the particular question and method with next parameters:
encodedMessage = abi.encodePacked("0x1b77882d1e55ffff0bc1c4215b869a2a36f7054d", 1, 1)
the result from this method is:
encodedMessage = 1b77882d1e55ffff0bc1c4215b869a2a36f7054d00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001
For the _signer (string
) the prefix (0x
) was removed, for _amount and _id (uint
) I used TypeEncoder.encode(Uint256(1))
.
Encoded values for each parameter is appended to the previous one, and at last hashed together with method: val hashedMessage = Hash.sha3(encodedMessage)
which result is: 0xe06176482c2b2619110be196a3d999dedf922782c0fe85603b19044bf30b3856
Later on hashedMessage can be used for signing or verification of signature. But that is out of the scope of this question.
QUESTION
Overview
I am able to send an EIP-1559 transaction through Rinkeby Testnet with Web3, the transaction completes without any trouble and I do get my Ether in my Metamask Rinkeby Account. The thing is that I am getting an Error: invalid remainder after the transaction completes and my program stops immediately.
Code
...ANSWER
Answered 2021-Sep-08 at 19:48So, I've managed to find a solution to this question thanks to Rakz's comment. Here is a working code for a EIP-1559 Transaction.
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