Online SHA256 Hash Generator

In this sample from Ktor website https://ktor.io/samples/feature/auth.html they use an account "test" with password "test" as example.

@UseExperimental(KtorExperimentalAPI::class)val hashedUserTable = UserHashedTableAuth(    getDigestFunction("SHA-256") { "ktor${it.length}" },    table = mapOf(        "test" to Base64.getDecoder().decode("GSjkHCHGAxTTbnkEDBbVYd+PUFRlcWiumc4+MWE9Rvw=") // sha256 for "test"    ))

I need to create another entry, but I can't figure out how they got that hash. I tried to sha256 the word "test", salted or not, tried to base64 the result... Nothing matches that hash so I'm unable to create another user.

Anyone could enlighten me here on how to create a compatible hash with that code?

We are trying to connect to Periodic's API using Swift 5. In order to do that, part of the process is encoding a concatenated string in HMAC SHA-256. In our code, we accomplish this by the following code:

let hmac = premac.digest(.sha256, key: "API KEY")

Which is using the SwiftCrypto library to accomplish this. According to Periodic's CTO, we are getting close but the issue is that this function's output is giving us a HEX version when we really need the bytestring level.

We are unsure how to proceed.

I'm trying to implement a signature in a Solidity contract and I'm having problems when it comes to comparing hashes. I calculate the hash with the following code in solidity:

sha256(abi.encodePacked(param1, ...., paramN);

Where:

abi.encodePacked(param1, ..., paramN) = [bytes: 0x0102030405060701]

and

sha255(abi.encodePacked(param1, ..., paramN)) = [bytes32: 0x245138c905599c8579ab186fbdbd6e62396aac35a98a6568f8803eed049d1251]

The main problem I'm having is that by using python sha256 on 0102030405060701 the result I'm getting is 5bc31e3decf480124c79c114744d111ec82b62e466a097c3ced6fe76cbace9a5.

What am I doing wrong?

I'm creating a User Table on DynamoDB, and I wanted to set the primary key as a sha256 hash string of the user's email address.

Is it a good idea to keep a SHA256 value as a primary key in a DynamoDB table? Would this be better for lookups or worse?

I've tried to change multer/storage/disk.js file so I can storage a hash everytime I upload a file, but the fact is that I'm always getting the same hash even uploading different files.

This is what I've done.

DiskStorage.prototype._handleFile = function _handleFile (req, file, cb) {  var that = this  var hash = crypto.createHash('sha256')  that.getDestination(req, file, function (err, destination) {    if (err) return cb(err)    that.getFilename(req, file, function (err, filename) {      if (err) return cb(err)      var finalPath = path.join(destination, filename)      var outStream = fs.createWriteStream(finalPath)      file.stream.pipe(outStream)      outStream.on('error', cb)      outStream.on('data', function (chunk) {        hash.update(chunk)      })      outStream.on('finish', function () {        cb(null, {          destination: destination,          filename: filename,          path: finalPath,          size: outStream.bytesWritten,          hash: hash.digest('hex')        })      })    })  })}

It' s like this section isn't doing anything

outStream.on('data', function (chunk) {        hash.update(chunk)      })